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Document And Entity Information	6 Months Ended
Document And Entity Information	Jun. 30, 2012 shares
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2012
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q2
Trading Symbol	SUI
Entity Registrant Name	SUN COMMUNITIES INC
Entity Central Index Key	0000912593
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding	26,471,431
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2012	Dec. 31, 2011
ASSETS
Investment property, net	$ 1,236,337	$ 1,196,606
Cash and cash equivalents	4,499	5,857
Inventory of manufactured homes	4,396	5,832
Notes and other receivables	121,908	114,884
Other assets	45,179	44,795
TOTAL ASSETS	1,412,319	1,367,974
LIABILITIES
Debt	1,286,156	1,268,191
Lines of credit	24,631	129,034
Other liabilities	71,673	71,404
TOTAL LIABILITIES	1,382,460	1,468,629
Commitments and contingencies
STOCKHOLDERS' EQUITY (DEFICIT)
Preferred stock, $0.01 par value, 10,000 shares authorized, none issued	0	0
Common stock, $0.01 par value, 90,000 shares authorized (June 30, 2012 and December 31, 2011, 28,273 and 23,612 shares issued respectively)	283	236
Additional paid-in capital	714,052	555,981
Accumulated other comprehensive loss	(735)	(1,273)
Distributions in excess of accumulated earnings	(644,220)	(617,953)
Treasury stock, at cost (June 30, 2012 and December 31, 2011, 1,802 shares)	(63,600)	(63,600)
Total Sun Communities, Inc. stockholders' equity (deficit)	5,780	(126,609)
Noncontrolling interests:
A-1 preferred OP Units	45,548	45,548
Common OP Units	(21,469)	(19,594)
TOTAL STOCKHOLDERS' EQUITY (DEFICIT)	29,859	(100,655)
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY (DEFICIT)	$ 1,412,319	$ 1,367,974

Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2012	Dec. 31, 2011
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	90,000,000	90,000,000
Common stock, shares issued (in shares)	28,271,000	23,612,000
Treasury stock, shares	1,802,000	1,802,000

Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
REVENUES
Income from real property	$ 61,507	$ 52,264	$ 125,803	$ 106,100
Revenue from home sales	11,439	8,146	21,052	16,381
Rental home revenue	6,511	5,427	12,802	10,757
Ancillary revenues, net	92	109	355	403
Interest	2,655	2,291	5,060	4,359
Other income (loss), net	175	25	435	(24)
Total revenues	82,379	68,262	165,507	137,976
COSTS AND EXPENSES
Property operating and maintenance	17,168	13,994	33,194	27,452
Real estate taxes	4,936	4,098	9,808	8,213
Cost of home sales	8,971	6,401	16,744	12,892
Rental home operating and maintenance	4,148	3,754	7,972	7,427
General and administrative - real property	5,182	4,833	10,240	9,311
General and administrative - home sales and rentals	2,238	1,952	4,447	3,925
Acquisition related costs	423	1,151	587	1,400
Depreciation and amortization	21,067	18,121	40,935	34,800
Interest	16,781	15,225	33,578	30,631
Interest on mandatorily redeemable debt	833	829	1,674	1,655
Total expenses	81,747	70,358	159,179	137,706
Income (loss) before income taxes and distributions from affiliates	632	(2,096)	6,328	270
(Provision) benefit for state income taxes	(53)	259	(106)	128
Distributions from affiliates	1,900	850	2,650	1,200
Net income (loss)	2,479	(987)	8,872	1,598
Less: Preferred return to A-1 preferred OP units	579	51	1,158	51
Less: Amounts attributable to noncontrolling interests	237	(148)	674	37
Net income (Loss) attributable to Sun Communities, Inc. common stockholders	$ 1,663	$ (890)	$ 7,040	$ 1,510
Basic	26,469	21,090	26,028	21,068
Diluted	26,485	21,090	26,045	23,146
Earnings (loss) per share:
Basic	$ 0.06	$ (0.04)	$ 0.27	$ 0.07
Diluted	0.06	(0.04)	0.27	0.07
Dividends per common share:	$ 0.63	$ 0.63	$ 1.26	$ 1.26

Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Net income (loss)	$ 2,479	$ (987)	$ 8,872	$ 1,598
Unrealized gain on interest rate swaps	343	19	599	422
Total comprehensive income (loss)	2,822	(968)	9,471	2,020
Less: Comprehensive income (loss) attributable to the noncontrolling interests	274	(147)	735	75
Comprehensive income (loss) attributable to Sun Communities, Inc. common stockholders	$ 2,548	$ (821)	$ 8,736	$ 1,945

- Definition

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

+ References

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- Definition

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to noncontrolling interests, if any. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

+ References + Details

- Definition

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the economic entity, including both controlling (parent) and noncontrolling interests. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, including any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

+ References + Details

- Definition

Change in accumulated gains and losses from derivative instrument designated and qualifying as the effective portion of cash flow hedges, net of tax effect. The after tax effect change includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.

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- Definition

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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+ Details

Consolidated Statement Of Stockholders' Equity (Deficit) - 6 months ended Jun. 30, 2012 - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital	Accumulated Other Comprehensive (Loss) Income	Distributions in Excess of Accumulated Earnings	Treasury Stock	Total Sun Communities Stockholders' Equity (Deficit)	Noncontrolling Interests	Total Stockholders' Equity (Deficit)
Balance at Dec. 31, 2011	$ (100,655)	$ 236	$ 555,981	$ (1,273)	$ (617,953)	$ (63,600)	$ (126,609)	$ 25,954	$ (100,655)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock from exercise of options, net		0	149	0	0	0	149	0	149
Issuance and associated costs of common stock, net		47	157,296	0	0	0	157,343	0	157,343
Share-based compensation - amortization and forfeitures		0	626	0	44	0	670	0	670
Net income	8,872	0	0	0	7,040	0	7,040	674	7,714
Unrealized gain on interest rate swaps and cap	599	0	0	538	0	0	538	61	599
Cash distributions		0	0	0	30,416	0	(30,416)	2,610	(33,026)
Distributions declared	(2,935)	0	0	0	2,935	0	(2,935)	0	(2,935)
Balance at Jun. 30, 2012	$ 29,859	$ 283	$ 714,052	$ (735)	$ (644,220)	$ (63,600)	$ 5,780	$ 24,079	$ 29,859

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

+ References

+ Details

- Definition

Total of Stockholders' Equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity including portions attributable to both the parent and noncontrolling interests (previously referred to as minority interest), if any. The entity including portions attributable to the parent and noncontrolling interests is sometimes referred to as the economic entity. This excludes temporary equity and is sometimes called permanent equity.

+ References + Details

Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
OPERATING ACTIVITIES:
Net income	$ 8,872	$ 1,598
Adjustments to reconcile net income to net cash provided by operating activities:
Gain from land disposition	(87)	0
Gain on valuation of derivative instruments	(4)	(5)
Stock compensation expense	688	634
Depreciation and amortization	40,010	34,218
Amortization of deferred financing costs	813	936
Distributions from affiliates	(2,650)	(1,200)
Change in notes receivable from financed sales of inventory homes, net of repayments	(4,435)	(2,581)
Change in inventory, other assets and other receivables, net	4,729	(7,102)
Change in accounts payable and other liabilities	(4,452)	2,593
NET CASH PROVIDED BY OPERATING ACTIVITIES	43,484	29,091
INVESTING ACTIVITIES:
Investment in properties	(60,930)	(39,507)
Acquisitions	(24,482)	(50,858)
Proceeds related to affiliate dividend distribution	2,650	1,200
Proceeds related to disposition of land	172	0
Proceeds related to disposition of assets and depreciated homes, net	1,211	2,313
Increase in notes receivable, net	(5,736)	(551)
NET CASH USED IN INVESTING ACTIVITIES	(87,115)	(87,403)
FINANCING ACTIVITIES:
Issuance and associated costs of common stock, OP units, and preferred OP units, net	157,343	47,097
Net proceeds from stock option exercise	149	690
Distributions to stockholders, OP unit holders, and preferred OP unit holders	(34,184)	(29,009)
Borrowings on lines of credit	71,635	101,400
Payments on lines of credit	(176,038)	(107,602)
Proceeds from issuance of other debt	54,567	172,483
Payments on other debt	(30,521)	(129,221)
Payments for deferred financing costs	(678)	(1,939)
NET CASH PROVIDED BY FOR FINANCING ACTIVITIES	42,273	53,899
Net decrease in cash and cash equivalents	(1,358)	(4,413)
Cash and cash equivalents, beginning of period	5,857	8,420
Cash and cash equivalents, end of period	4,499	4,007
SUPPLEMENTAL INFORMATION:
Cash paid for interest	28,519	25,441
Cash paid for interest on mandatorily redeemable debt	1,677	1,657
Cash paid for state income taxes	320	359
Noncash investing and financing activities:
Unrealized gain on interest rate swaps	599	422
Reduction in secured borrowing balance	6,081	4,739
Change in dividends declared and outstanding	2,935	0
Noncash investing and financing activities at the date of acquisition:
Acquisitions - A-1 preferred OP units issued	0	45,548
Acquisitions - debt assumed	0	52,449
Acquisitions - other liabilities	$ 0	$ 1,833

Basis of Presentation	6 Months Ended
Basis of Presentation	Jun. 30, 2012
1. Basis of Presentation [Abstract]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	Basis of Presentation These unaudited interim Consolidated Financial Statements of Sun Communities, Inc., a Maryland corporation, and all wholly-owned or majority-owned and controlled subsidiaries, including Sun Communities Operating Limited Partnership (the “Operating Partnership”), SunChamp LLC (“SunChamp”), and Sun Home Services, Inc. (“SHS”), have been prepared pursuant to the Securities and Exchange Commission (“SEC”) rules and regulations and in accordance with accounting principles generally accepted in the United States of America (“GAAP”). Certain information and footnote disclosures required for annual financial statements have been condensed or excluded pursuant to SEC rules and regulations. Accordingly, the interim financial statements do not include all of the information and footnotes required by GAAP for complete financial statements and should be read in conjunction with the Consolidated Financial Statements and accompanying notes included in our Annual Report on Form 10-K for the year ended December 31, 2011 as filed with the SEC on February 24, 2012, as amended on March 23, 2012 (the “2011 Annual Report”). Reference in this report to Sun Communities, Inc., “we”, “our”, “us” and the “Company” refer to Sun Communities, Inc. and its subsidiaries, unless the context indicates otherwise. The accompanying Consolidated Financial Statements reflect, in the opinion of management, all adjustments necessary for a fair presentation of the interim financial statements. All such adjustments are of a normal and recurring nature. The following Notes to Consolidated Financial Statements present interim disclosures as required by the SEC. These statements have been prepared on a basis that is substantially consistent with the accounting principles applied in our 2011 Annual Report. Certain reclassifications have been made to prior periods’ financial statements in order to conform to current period presentation.

- Definition

The entire disclosure for organization, consolidation and basis of presentation of financial statements disclosure.

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-Name Accounting Standards Codification
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-Name Accounting Standards Codification
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-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)-8
-Paragraph 8, C1, C7
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+ Details

Real Estate Acquisitions

6 Months Ended

Jun. 30, 2012

Business Combinations [Abstract]

Real Estate Acquisitions

In May 2011, we acquired Orange City RV Resort (“Orange City”), a Florida recreational vehicle community comprising 525 developed sites. In June 2011, we closed on the acquisition of Kentland Communities (“Kentland”), comprising 17 manufactured home communities and one recreational vehicle community. The 18 communities acquired are located in western Michigan and comprise 5,434 developed sites. In November 2011, we acquired Cider Mill Crossings (“Cider Mill”), a Michigan manufactured home community comprising 262 developed sites through an auction. In December 2011, we acquired three Florida RV communities, Club Naples RV Resort, Kountree RV Resort, and North Lake RV Resort (collectively the “Florida Properties”), two of which are in Naples, Florida and one of which is in Moore Haven, Florida, comprised of 740 developed sites. These acquisitions complement our existing portfolio and create both short-term and long-term growth opportunities.

In February 2012, we acquired three additional Florida RV communities, Three Lakes RV Resort, Blueberry Hill RV Resort and Grand Lake Estates (collectively, the “Additional Florida Properties”), one of which is located in Hudson, Florida, one of which is located in Bushnell, Florida and one of which is located in Orange Lake, Florida, comprised of 1,114 RV sites in the aggregate. We believe this portfolio provides for growth from both rental increases and through improved seasonal occupancy.

On July 24, 2012 we acquired Blazing Star, a recreational vehicle community with 260 sites located in San Antonio, Texas, for a purchase price of $7.1 million, comprised of $4.1 million of assumed debt and $3.0 million of cash.

Acquisition related costs of approximately $0.6 million and $1.4 million have been incurred for the six months ended June 30, 2012 and 2011, respectively, and are presented as “Acquisition related costs” in our Consolidated Statements of Operations.

During the third quarter of 2011, we completed the purchase price allocation for Kentland and Orange City. In the first quarter of 2012 some of the amounts previously estimated changed. The changes in estimates included a decrease in other assets of $0.8 million and a decrease in cash consideration of $0.8 million for the Florida Properties. The measurement period adjustments represent updates made to the purchase price allocation based on the escrow amount required for the Additional Florida Properties which is reflected in the purchase price allocation for the Additional Florida Properties. There were no significant adjustments to our Consolidated Statements of Operations.

The purchase price allocation for Cider Mill, the Florida Properties, and the Additional Florida Properties is preliminary and may be adjusted as final costs and final valuations are determined.

2. Real Estate Acquisitions, continued

The following table summarizes the amounts of the assets acquired and liabilities assumed recognized at the acquisition dates and the consideration paid for Kentland, Orange City, Cider Mill, the Florida Properties, and the Additional Florida Properties (in thousands):



At Acquisition Date	Kentland			Orange City		Cider Mill			Florida Properties			Addtl Florida Properties			Total
Investment in property	$	131,228		$	6,460	$	2,088		$	24,027		$	25,384		$	189,187
Inventory of manufactured homes	1,150			—		—			36			112			1,298
Notes	3,542			—		—			—			—			3,542
In-place leases	9,200			10		—			190			180			9,580
Other assets	1,269			—		—			97			—			1,366
Other liabilities	(2,067		)	—		(1,678		)	(1,237		)	(1,194		)	(6,176		)
Assumed debt	(52,398		)	—		—			—			—			(52,398		)

Total identifiable assets and liabilities assumed	$	91,924		$	6,470	$	410		$	23,113		$	24,482		$	146,399


Consideration

Cash ⁽¹⁾	$	27,383		$	2,533	$	410		$	6,113		$	24,482		$	60,921
A-1 preferred OP units	45,548			—		—			—			—			45,548
New debt proceeds	18,993			3,937		—			17,000			—			39,930

Fair value of total consideration transferred	$	91,924		$	6,470	$	410		$	23,113		$	24,482		$	146,399

⁽¹⁾ Subsequent to the acquisition, on March 30, 2012, the Additional Florida Properties were encumbered with a $19.0 million loan through Bank of America and The PrivateBank (See Note 8).

As of June 30, 2012, the total residual value of the acquired in-place leases above is $8.2 million. The amortization period is 7 years.

The results of operations of Kentland, Orange City, Cider Mill, the Florida Properties, and the Additional Florida Properties are included in the Consolidated Statements of Operations beginning on their acquisition dates of June 2011, May 2011, November 2011, December 2011, and February 2012, respectively. The following unaudited pro forma financial information presents the results of our operations for the six months ended June 30, 2012 and 2011 as if the properties were acquired on January 1, 2010 for those communities acquired in 2011 and January 1, 2011 for those that were acquired in 2012. The unaudited pro forma results have been prepared for comparative purposes only and do not purport to be indicative of either the results of operations that would have actually occurred or the future results of operations (in thousands, except per-share data). ⁽¹⁾



	Six Months Ended June 30,
	(unaudited)
	2012		2011
Total revenues	$	165,999	$	153,739
Net income attributable to Sun Communities, Inc. shareholders	$	7,335	$	4,606
Net income per share attributable to Sun Communities, Inc. shareholders - basic	0.28		0.22
Net income per share attributable to Sun Communities, Inc. shareholders - diluted	0.28		0.20

⁽¹⁾ Below are nonrecurring expenses that have been adjusted for the pro forma results above:

(a) The sellers had management fees of $0.7 million for the six months ended June 30, 2011 that have been excluded from above as these fees will not continue going forward.

(b) Transaction costs related to the acquisitions are not expected to have a continuing impact and therefore have been excluded from 2012 and included in 2011.

2. Real Estate Acquisitions, continued

The amount of Kentland's, Orange City's, Cider Mill's, the Florida Properties', and the Additional Florida Properties' revenue and net income included in the Consolidated Statements of Operations for the six months ended June 30, 2012 is set forth in the following table (in thousands):



	Revenue		Net Income
Six Months Ended June 30, 2012	$	16,162	$	2,034

- Definition

The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).

+ References

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+ Details

Investment Property

6 Months Ended

Jun. 30, 2012

Real Estate Investment Property, Net [Abstract]

Investment Property

The following table sets forth certain information regarding investment property (in thousands):



	June 30, 2012			December 31, 2011
Land	$	153,397		$	140,230
Land improvements and buildings	1,364,660			1,342,325
Rental homes and improvements	276,991			246,245
Furniture, fixtures, and equipment	42,394			41,172
Land held for future development	25,606			24,633
Investment property	1,863,048			1,794,605
Accumulated depreciation	(626,711		)	(597,999		)
Investment property, net	$	1,236,337		$	1,196,606

Land improvements and buildings consist primarily of infrastructure, roads, landscaping, clubhouses, maintenance buildings and amenities.

See Note 2 for details on recent acquisitions.

- Definition

The entire disclosure for certain real estate investment financial statements, real estate investment trust operating support agreements, real estate owned, retail land sales, time share transactions, as well as other real estate related disclosures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Statement of Financial Accounting Standard (FAS)
-Number 57
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Name Federal Regulation (FR)
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Research Bulletin (ARB)
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
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Reference 8: http://www.xbrl.org/2003/role/presentationRef
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Reference 9: http://www.xbrl.org/2003/role/presentationRef
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Reference 10: http://www.xbrl.org/2003/role/presentationRef
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Reference 11: http://www.xbrl.org/2003/role/presentationRef
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Reference 12: http://www.xbrl.org/2003/role/presentationRef
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Reference 19: http://www.xbrl.org/2003/role/presentationRef
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+ Details

Transfers Of Financial Assets

6 Months Ended

Jun. 30, 2012

Transfers and Servicing [Abstract]

Transfers Of Financial Assets

Transfers of Financial Assets

We completed various transactions with an unrelated entity involving our notes receivable during 2012 under which we received a total of $11.5 million of cash proceeds in exchange for relinquishing our right, title and interest in certain notes receivable. We have no further obligations or rights with respect to the control, management, administration, servicing, or collection of the installment notes. However, we are subject to certain recourse provisions requiring us to purchase the underlying homes collateralizing such notes, in the event of a note default and subsequent repossession of the home by the unrelated entity. The recourse provisions are considered to be a form of continuing involvement, and therefore these transferred loans did not meet the requirements for sale accounting. We continue to recognize these transferred loans on our balance sheet and refer to them as collateralized receivables as a transfer of financial assets. The proceeds from the transfer have been recognized as a secured borrowing.

In the event of note default, and subsequent repossession of a manufactured home by the unrelated entity, the terms of the agreement require us to repurchase the manufactured home. Default is defined as the failure to repay the installment note according to contractual terms. The repurchase price is calculated as a percentage of the outstanding principal balance of the collateralized receivable, plus any outstanding late fees, accrued interest, legal fees, and escrow advances associated with the installment note. The percentage used to determine the repurchase price of the outstanding principal balance on the installment note is based on the number of payments made on the note. In general, the repurchase price is determined as follows:



Number of Payments	Repurchase %
Less than or equal to 15	100	%
Greater than 15 but less than 64	90	%
Equal to or greater than 64 but less than 120	65	%
120 or more	50	%

The transferred assets have been classified as collateralized receivables in Notes and Other Receivables (see Note 5) and the cash proceeds received from these transactions have been classified as a secured borrowing in Debt (see Note 8) within the Consolidated Balance Sheets. The balance of the collateralized receivables was $86.5 million (net of allowance of $0.5 million ) and $81.2 million (net of allowance of $0.5 million) as of June 30, 2012 and December 31, 2011, respectively. The outstanding balance on the secured borrowing was $87.1 million and $81.7 million as of June 30, 2012 and December 31, 2011, respectively.

The balances of the collateralized receivables and secured borrowings fluctuate. The balances increase as additional notes receivable are transferred and exchanged for cash proceeds. The balances are reduced as the related collateralized receivables are collected from the customers, or as the underlying collateral is repurchased. The change in the aggregate gross principal balance of the collateralized receivables is as follows (in thousands):



	Six Months Ended			Year Ended
	June 30, 2012			December 31, 2011
Beginning balance	$	81,682		$	71,278
Financed sales of manufactured homes	11,467			21,509
Principal payments and payoffs from our customers	(2,671		)	(4,425		)
Principal reduction from repurchased homes	(3,409		)	(6,680		)
Total activity	5,387			10,404
Ending balance	$	87,069		$	81,682

The collateralized receivables earn interest income and the secured borrowings accrue interest expense at the same interest rates. The amount of interest income and expense recognized was $4.4 million and $4.0 million for the six months ended June 30, 2012 and 2011, respectively.

- Definition

The entire disclosure for a transferor's continuing involvement in financial assets that it has transferred in a securitization or asset-backed financing arrangement, the nature of any restrictions on assets reported by an entity in its statement of financial position that relate to a transferred financial asset (including the carrying amounts of such assets), how servicing assets and servicing liabilities are reported, and (for securitization or asset-backed financing arrangements accounted for as sales) when a transferor has continuing involvement with the transferred financial assets and transfers of financial assets accounted for as secured borrowings, how the transfer of financial assets affects an entity's financial position, financial performance, and cash flows.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-URI http://asc.fasb.org/extlink&oid=6863725&loc=d3e122625-111746

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)-8
-Paragraph 6
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)-8
-Paragraph B1-B12
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Notes And Other Receivables

6 Months Ended

Jun. 30, 2012

Long-term Notes and Loans, by Type, Current and Noncurrent [Abstract]

Notes And Other Receivables

Notes and Other Receivables

The following table sets forth certain information regarding notes and other receivables (in thousands):



	June 30, 2012		December 31, 2011
Installment notes receivable on manufactured homes, net	$	15,034	$	13,417
Collateralized receivables, net (see Note 4)	86,539		81,176
Other receivables, net	20,335		20,291
Total notes and other receivables	$	121,908	$	114,884

Installment Notes Receivable on Manufactured Homes

The installment notes of $15.0 million (net of allowance of $0.1 million) and $13.4 million (net of allowance of $0.1 million) as of June 30, 2012 and December 31, 2011, respectively, are collateralized by manufactured homes. The notes represent financing provided by us to purchasers of manufactured homes primarily located in our communities and require monthly principal and interest payments. This also includes the notes receivable that were purchased in the Kentland acquisition. See Note 2 for more information. The notes have a net weighted average interest rate and maturity of 8.2 percent and 10.8 years as of June 30, 2012, and 7.9 percent and 10.3 years as of December 31, 2011.

The change in the aggregate gross principal balance of the installment notes is as follows (in thousands):



	Six Months Ended			Year Ended
	June 30, 2012			December 31, 2011
Beginning balance	$	13,545		$	9,466
Financed sales of manufactured homes	3,054			3,362
Acquired notes (see Note 2)	—			3,542
Principal payments and payoffs from our customers	(1,114		)	(1,728		)
Principal reduction from repossessed homes	(345		)	(1,097		)
Total activity	1,595			4,079
Ending balance	$	15,140		$	13,545

Collateralized Receivables

Collateralized receivables represent notes receivable that were transferred to a third party, but did not meet the requirements for sale accounting (see Note 4). The receivables have a balance of $86.5 million (net of allowance of $0.5 million) and $81.2 million(net of allowance of $0.5 million ) as of June 30, 2012 and December 31, 2011, respectively. The receivables have a net weighted average interest rate and maturity of 11.1 percent and 13.1 years as of June 30, 2012, and 11.2 percent and 13.2 years as of December 31, 2011.

Allowance for Losses for Collateralized and Installment Notes Receivable

The allowance for losses for collateralized and installment notes receivable was $0.6 million as of June 30, 2012 and December 31, 2011.



	Six Months Ended			Year Ended
	June 30, 2012			December 31, 2011
Beginning balance	$	(635	)	$	(303	)
Lower of cost or market write-downs	60			84
Increase to reserve balance	(62		)	(416		)
Total activity	(2		)	(332		)
Ending balance	$	(637	)	$	(635	)

5. Notes and Other Receivables, continued

Other Receivables

As of June 30, 2012 other receivables were comprised of amounts due from residents for rent and water and sewer usage of $2.9 million (net of allowance of $0.3 million), home sale proceeds of $5.2 million, insurance receivables of $1.1 million, insurance settlement (see Note 3) of $3.7 million, rebates and other receivables of $2.4 million and a note receivable of $5.0 million loaned to the principals of the Florida Properties which bears interest at LIBOR plus 475 basis points, matures on January 31, 2013 and is secured by the equity interests in four of their RV communities. As of December 31, 2011 other receivables were comprised of amounts due from residents for rent and water and sewer usage of $3.0 million (net of allowance of $0.4 million), home sale proceeds of $3.3 million, insurance receivables of $0.8 million, rebates receivable in association of FNMA agreement of $4.9 million, insurance settlement of $3.7 million, note receivable related to Kentland acquisition of $0.9 million (see Note 2), and rebates and other receivables of $3.7 million.

- Definition

The entire disclosure for claims held for amounts due a company. Examples include trade accounts receivables, notes receivables, loans receivables.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 3, 4
-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 7
-Article 9

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Statement of Position (SOP)
-Number 01-6
-Paragraph 13
-Subparagraph d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 4
-Section 08
-Paragraph k

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.3,4)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6965416&loc=d3e5074-111524

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6965416&loc=d3e5066-111524

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(k))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=6965416&loc=d3e5162-111524

+ Details

Intangibles	6 Months Ended
Intangibles	Jun. 30, 2012
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets Disclosure [Text Block]	Intangibles Our intangible assets are in-place leases from acquisitions and capitalized costs in relation to leasing costs. These intangible assets are recorded within Other Assets on the Consolidated Balance Sheets. They are amortized over a seven year amortization period. The gross carrying amount is $23.7 million and $25.3 million at June 30, 2012 and December 31, 2011, respectively. The accumulated amortization is $11.4 million and $10.8 million at June 30, 2012 and December 31, 2011, respectively. Aggregate net amortization expense related to intangible assets was $0.7 million and $0.5 million for the three months ended June 30, 2012 and 2011, respectively. Aggregate net amortization expense related to intangible assets was $1.7 million and $1.0 million for the six months ended June 30, 2012 and 2011, respectively.

- Definition

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

+ References + Details

Investment In Affiliates

6 Months Ended

Jun. 30, 2012

Equity Method Investments and Joint Ventures [Abstract]

Investment In Affiliates

Investment in Affiliates

Origen Financial Services, LLC (“OFS LLC”)

At June 30, 2012 and 2011, we had a 22.9 percent ownership interest in OFS LLC, an entity formed to originate manufactured housing installment contracts. We have suspended equity accounting as the carrying value of our investment is zero.

Origen Financial, Inc. (“Origen”)

Through Sun OFI, LLC, a taxable REIT subsidiary, we own 5,000,000 shares of common stock of Origen which approximates an ownership interest of 19 percent. Although it is no longer originating or servicing loans, Origen continues to manage an existing portfolio of manufactured home loans and asset backed securities. We have suspended equity accounting for this investment as the carrying value of our investment is zero. We do, however, receive income from dividend distributions on our investment. Our investment in Origen had a market value of approximately $7.0 million based on a quoted market closing price of $1.40 per share from the “Pink Sheet Electronic OTC Trading System” as of June 29, 2012.

The unaudited revenue and expense amounts in the table below represent actual results through May 2012 and budgeted June 2012 results.

The following table sets forth certain summarized unaudited financial information for Origen (amounts in thousands):



	Three Months Ended June 30,						Six Months Ended June 30,
	(unaudited)						(unaudited)
	2012			2011			2012			2011
Revenues	$	14,982		$	17,109		$	31,275		$	34,838
Expenses	(18,010		)	(20,866		)	(30,737		)	(41,954		)
Net loss	$	(3,028	)	$	(3,757	)	$	538		$	(7,116	)

- Definition

The entire disclosure for equity investment, or group of investments, for which combined disclosure is appropriate, including: (a) the name of each investee and percentage of ownership of common stock, (b) accounting policies for investments in common stock, (c) difference between the amount at which the investment is carried and the amount of underlying equity in net assets and the accounting treatment of the difference, (d) the total fair value of each identified investment for which a market value is available, (e) summarized information as to assets, liabilities, and results of operations of the investees (for investments in unconsolidated subsidiaries, common stock of joint ventures, or other investments using the equity method), and (f) material effects of possible conversions, exercises, or contingent issuances of the investee. Other disclosures include (a) the names of any investee in which the investor owns 20 percent or more of the voting stock and investment is not accounted for using the equity method, and the reasons why not, and (b) the names of any investee in which the investor owns less than 20 percent of the voting stock and the investment is accounted for using the equity method, and the reasons why it is.

+ References + Details

Debt And Lines Of Credit

6 Months Ended

Jun. 30, 2012

Debt Disclosure [Abstract]

Debt Disclosure [Text Block]

Debt and Lines of Credit

The following table sets forth certain information regarding debt (in thousands):



	Principal Outstanding				Weighted Average Years to Maturity		Weighted Average Interest Rates
	June 30, 2012		December 31, 2011		June 30, 2012	December 31, 2011	June 30, 2012		December 31, 2011
Collateralized term loans - CMBS	$	625,060	$	629,229	4.5	5.0	5.5	%	5.5	%
Collateralized term loans - FNMA	372,224		364,581		10.8	11.3	4.2	%	3.6	%
Aspen and Series B-3 preferred OP Units	47,822		48,822		8.8	9.2	6.9	%	6.9	%
Secured borrowing (see Note 4)	87,069		81,682		13.0	13.2	11.1	%	11.2	%
Mortgage notes, other	153,981		143,877		3.4	3.2	3.7	%	3.8	%
Total debt	$	1,286,156	$	1,268,191	7.0	7.3	5.3	%	5.2	%

Collateralized Term Loans

In March, 2011, we completed a collateralized mortgage backed security “CMBS” financing with JPMorgan Chase Bank, National Association for $115.0 million bearing an interest rate of 5.837% and a maturity date of March 1, 2021. This loan is secured by 11 properties. The loan refinanced $104.8 million of CMBS debt which was scheduled to mature in July 2011 and was collateralized using the same property pool.

In May 2011, we completed a refinancing agreement with Bank of America N.A., for $23.6 million. This debt bears an interest rate of 5.38% and has a maturity of June 1, 2021. This loan is secured by three properties. The loan refinanced $17.9 million of debt which was scheduled to mature in June 2012 and was collateralized using the same property pool.

In July 2011, we reached an agreement with Fannie Mae (“FNMA”) and PNC Bank, National Association, regarding the settlement of the litigation we commenced in November 2009 over certain fees charged when the variable rate loan facility was extended in April 2009. The agreement became effective January 3, 2012 and the litigation was dismissed. In accordance with the terms of the agreement, we have the option to extend the maturity date of our entire $367.0 million credit facility with PNC Bank and FNMA from 2014 to 2023, subject to compliance with certain underwriting criteria. This agreement also provided a reduction in the facility fee charged on our variable rate facility for 2011. In addition we drew a $10.0 million variable rate facility, which matures on May 1, 2023 and provides for interest-only payments until May 1, 2014, after which principal and interest payments will be due based on a 30-year amortization. The interest rate for the $10.0 million variable rate facility is equal to the 90-day LIBOR index, plus an investor spread equal to 95 basis points, plus a variable facility fee equal to 172 basis points through maturity.

The collateralized term loans totaling $1.0 billion as of June 30, 2012, are secured by 96 properties comprised of 35,107 sites representing approximately $574.8 million of net book value.

Aspen preferred OP Units and Series B-3 preferred OP units

The Aspen preferred OP units are convertible into 526,212 common shares based on a conversion price of $68 per share with a redemption date of January 1, 2024. The minimum and maximum annual preferred rate is 6.5 percent and 9.0 percent, respectively. The current preferred rate is 6.5 percent.

We redeemed $1.0 million of Series B-3 preferred OP units in May 2012.

Secured Borrowing

See Note 4 for additional information regarding our collateralized receivables and secured borrowing transactions.

Mortgage Notes

In June 2011, we assumed secured debt with a principal balance of $52.4 million, as a result of the Kentland acquisition (see Note 2 for acquisition details), that had a weighted average maturity of 4.4 years and weighted average annual interest rate of 5.70% at the date of acquisition. This secured debt was recorded at fair value on the date of the acquisition which was equal to the assumed

8. Debt and Lines of Credit, continued

principal balance. This debt is secured by 12 properties. The current weighted average maturity is 3.9 years with the current weighted average annual variable interest rate of 5.61%.

In June 2011, we entered into a $22.9 million variable financing agreement with Bank of America N.A., to fund the Kentland and Orange City acquisition (see Note 2 for acquisition details). The agreement has a weighted average maturity of 3.7 years and weighted average annual variable interest rate of 3.10% at the date of acquisition. The debt was collateralized by six properties – five Kentland properties and Orange City. On February 1, 2012, we paid off $4.5 million of this agreement which was collateralized by Orange City. The current weighted average maturity is 2.9 years with the current weighted average annual variable interest rate of 3.10%.

In December 2011, we entered into a $17.0 million variable financing agreement with Bank of America, N.A. and The Private Bank to fund the Florida Properties acquisition (see Note 2 for acquisition details). The agreement has a weighted average maturity of 5.0 years and had an effective interest rate of 2.78% at the date of acquisition. The debt was collateralized by all three of the properties acquired in the Florida Properties acquisition. The current weighted average maturity is 4.5 years with the current weighted average annual variable interest rate of 2.75%.

In March 2012, we entered into an amended and restated variable financing agreement with Bank of America, N.A. and The PrivateBank which added an additional $19.0 million to the December 2011 variable financing agreement, the "36.0 Million Facility." The agreement has a weighted average maturity of 4.7 years and had an effective interest rate of 2.74% at the date of acquisition. The debt is collateralized by the three properties acquired in the Additional Florida Properties acquisition.

In March 2012, we paid off the entire $2.7 million mortgage agreement secured by Leisure Village which was due to mature on April 1, 2012.

In June 2012, we completed a variable refinancing agreement with Bank of America N.A., for $14.1 million. This debt bears an interest rate of LIBOR plus a 2.0% margin (effective rate at June 30, 2012 was 2.25%) and has a maturity of September 1, 2016, assuming the election of the two successive one-year extensions. The loan is secured by two properties and refinanced $14.0 million of debt which matured in June 2012.

The mortgage notes totaling $154.0 million as of June 30, 2012, are collateralized by 31 properties comprised of 8,160 sites representing approximately $256.3 million of net book value.

Lines of Credit

In September 2011, we entered into a senior secured revolving credit facility with Bank of America, N.A., and certain other lenders in the amount of $130.0 million (the "Facility"), which replaced our $115.0 million revolving line of credit. The Facility is secured by a first priority lien on all of our equity interests in each entity that owns all or a portion of the properties constituting the borrowing base and collateral assignments of our senior and mezzanine debt positions in certain borrowing base properties. The Facility has a built-in accordion feature allowing up to $20.0 million in additional borrowings and a one-year extension option, both at our discretion. The Facility matures on October 1, 2015, assuming the election of the extension. The Facility bears interest at a floating rate based on Eurodollar plus a margin that is determined based on our leverage ratio calculated in accordance with the Facility, which can range from 2.25% to 2.95%. Based on our calculation of the leverage ratio as of June 30, 2012, the margin is 2.50% . The outstanding balance on the line of credit was $20.1 million and $107.5 million as of June 30, 2012 and December 31, 2011, respectively. In addition, $4.0 million of availability was used to back standby letters of credit as of June 30, 2012 and December 31, 2011. As of June 30, 2012 and December 31, 2011, $105.9 million and $18.5 million, respectively, were available to be drawn under the facility based on the calculation of the borrowing base at each date.

We have a $20.0 million secured line of credit agreement collateralized by a portion of our rental home portfolio. The net book value of the rental homes pledged as security for the loan must meet or exceed 200 percent of the outstanding loan balance. The terms of the agreement require interest only payments for the first 5 years, with the remainder of the term being amortized based on a 10 year term. The current effective interest rate is Prime plus 200 basis points, or 5.5 percent at June 30, 2012. Prime shall mean the prime rate published in the Wall Street Journal adjusted the first day of each calendar month. The outstanding balance was zero as of June 30, 2012. The outstanding balance was $16.0 million as of December 31, 2011.

We have a $12.0 million manufactured home floor plan facility renewable indefinitely until our lender provides us 12 month notice of their intent to terminate the agreement. The interest rate is 100 basis points over the greater of Prime or 6.0 percent (effective

8. Debt and Lines of Credit, continued

rate 7.0 percent at June 30, 2012). Prime means the prevailing “prime rate” as quoted in the Wall Street Journal on the first business day of each month. The outstanding balance was $4.5 million and $5.5 million as of June 30, 2012 and December 31, 2011, respectively.

As of June 30, 2012, the total of maturities and amortization of debt and lines of credit during the next five years, are as follows (in thousands):



	Maturities and Amortization By Year
	Total Due		Jul 2012 - Dec 2012		2013		2014		2015		2016		After 5 years
Lines of credit	$	24,631	$	—	$	4,531	$	—	$	20,100	$	—	$	—
Mortgage loans payable:
Maturities	1,001,931		—		33,762		185,754		16,622		312,585		453,208
Principal amortization	149,334		8,746		18,240		17,899		17,182		15,492		71,775
Aspen and Series B-3 preferred OP units	47,822		3,670		4,145		4,225		—		—		35,782
Secured borrowing	87,069		1,849		3,953		4,329		4,792		5,310		66,836
Total	$	1,310,787	$	14,265	$	64,631	$	212,207	$	58,696	$	333,387	$	627,601

The most restrictive of our debt agreements place limitations on secured borrowings and contain minimum fixed charge coverage, leverage, distribution and net worth requirements. As of June 30, 2012, we were in compliance with all covenants except that our subsidiaries that own the Florida Properties and the Additional Florida Properties were not in compliance with the debt service coverage ratio contained in the $36.0 Million Facility. There is no Event of Default under the $36.0 Million Facility. We have requested a waiver of such covenant for a specified period of time and, if we are unable to obtain such waiver, we intend to comply with this covenant by voluntarily paying down a portion of the $36.0 Million Facility in accordance with the loan agreement.

- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

+ References + Details

Equity Transactions	6 Months Ended
Equity Transactions	Jun. 30, 2012
Stockholders' Equity Note [Abstract]
Equity Transactions	Equity Transactions In November 2004, our Board of Directors authorized us to repurchase up to 1,000,000 shares of our common stock. We have 400,000 common shares remaining in the repurchase program. No common shares were repurchased during 2012 or 2011. There is no expiration date specified for the buyback program. Common OP Unit holders can convert their Common OP units into an equivalent number of shares of common stock at any time. During the six months ended June 30, 2012 and 2011, holders of Common OP Units converted 2,000 and 10,249 units, respectively to common stock. On May 10, 2012 pursuant to a shelf registration statement on Form S-3, we registered with the SEC the sale of our common stock, preferred stock, debt securities, warrants and units consisting of two or more of the aforementioned securities. This shelf registration statement was effective upon filing and replaced our previous shelf registration statement which was scheduled to expire in May 2012. On May 10, 2012 we entered into an "at-the-market" sales agreement with BMO Capital Markets Corp and Liquidnet Inc. to issue and sell shares of common stock from time to time. The current authorization allows for the sale of our common stock up to an aggregate amount of $100 million. There were no shares of common stock sold through June 30, 2012. In January 2012, we closed an underwritten registered public offering of 4,600,000 shares of common stock at a price of $35.50 per share. The net proceeds from the offering were $156.0 million after deducting the underwriting discounts and expenses related to the offering. We used the net proceeds of the offering to repay $123.5 million of outstanding debt and we used $25.0 million to fund a portion of the Additional Florida Properties (See Note 2 for additional information), which were subsequently encumbered with a loan of $19.0 million. We expect to use any remaining net proceeds of the offering to fund possible future acquisitions of properties and for working capital and general corporate purposes. Under our previous shelf registration statement on Form S-3 we had an "at-the-market" sales agreement to issue and sell shares 9. Equity Transactions, continued of common stock from time to time. We issued 40,524 shares of common stock from January 1, 2012 through May 9, 2012, when the sales agreement was terminated. The shares of common stock were sold at the prevailing market price of our common stock at the time of each sale with a weighted average sale price of $37.22 and we received net proceeds of approximately $1.5 million. The proceeds were used to pay down our line of credit. On August 6, 2010, we entered into a Common Stock Purchase Agreement (the “Purchase Agreement”) with REIT Opportunity, Ltd. (“REIT Ltd.”), which provides that, upon the terms and subject to the conditions set forth in the Purchase Agreement, REIT Ltd. is committed to purchase up to the lesser of $100 million of our common stock, or 3,889,493 shares of our common stock, which is equal to one share less than twenty percent of our issued and outstanding shares of common stock on the effective date of the Purchase Agreement. From time to time over the two year term of the Purchase Agreement, and at our sole discretion, we may present REIT Ltd. with draw down notices to purchase our common stock. Any and all issuances of shares of common stock to REIT Ltd. pursuant to the Purchase Agreement will be registered on our effective shelf registration statement on Form S-3. In January, 2011 we sold 915,827 shares of common stock at a weighted average sale price of $32.76 and received net proceeds of $30.0 million. The funds were used to pay down our line of credit. In June 2011, we issued $45.5 million of Series A-1 preferred operating partnership (“A-1 preferred OP”) units as a result of the Kentland acquisition (see Note 2 for details). A-1 preferred OP unit holders can convert the A-1 preferred OP units into shares of common stock at any time after December 31, 2013 based on a conversion price of $41 per share with $100 par value. These A-1 preferred OP units are convertible, but not redeemable. The A-1 preferred OP unit holders receive a preferred return of 5.1% until June 23, 2013 and 6.0% thereafter. In August 2011, we discovered that we did not register with the SEC shares of our common stock purchased in the open market by our 401(k) plan for the benefit of participants in the plan. We eliminated the option to purchase our common stock in the plan in September 2011 and the last purchase made through the plan was on September 16, 2011. As disclosed in our prior SEC filings, we considered filing a registration statement on Form S-3 offering to rescind the purchase of shares of our common stock by persons who acquired such shares through our 401(k) plan from September 16, 2010 through September 16, 2011. During that period, the plan purchased a total of 3,301 shares of our common stock for the benefit of a total of 85 participants. If a rescission offer were conducted, we would offer to repurchase shares of our common stock purchased through the 401(k) plan during the one year period ended September 16, 2011, but only if such shares either (i) were subsequently sold at a loss, or (ii) were purchased at a price higher than the market price of our common stock at the end of the rescission offer period, and are still held by the plan participant. To the best of our knowledge no shares purchased during the applicable period have subsequently been sold at a loss. Based on the recent and current market price of our common stock, we believe our potential liability, if any, with respect to shares of our common stock purchased during the applicable period and still held by plan participants is not material to us. In fact, if we were to conduct a rescission offer today, we do not believe we would have any liability unless the market price of our common stock at the end of the rescission offer period were less than $39.28 per share, which is the highest price paid for purchases of shares by plan participants during the applicable period. Based on these facts and given the expense of conducting a rescission offer, we have determined not to conduct a rescission offer. Cash dividends of $0.63 per share were declared for the quarter ended June 30, 2012. On July 20, 2012 cash payments of approximately $18.0 million for aggregate dividends, distributions and dividend equivalents were made to common stockholders, common OP unitholders, and restricted stockholders of record as of July 10, 2012.

- Definition

The entire disclosure for shareholders' equity, comprised of portions attributable to the parent entity and noncontrolling interest, if any, including other comprehensive income (as applicable). Including, but not limited to: (1) balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings; (2) accumulated balance for each classification of other comprehensive income and total amount of comprehensive income; (3) amount and nature of changes in separate accounts, including the number of shares authorized and outstanding, number of shares issued upon exercise and conversion, and for other comprehensive income, the adjustments for reclassifications to net income; (4) rights and privileges of each class of stock authorized; (5) basis of treasury stock, if other than cost, and amounts paid and accounting treatment for treasury stock purchased significantly in excess of market; (6) dividends paid or payable per share and in the aggregate for each class of stock for each period presented; (7) dividend restrictions and accumulated preferred dividends in arrears (in aggregate and per share amount); (8) retained earnings appropriations or restrictions, such as dividend restrictions; (9) impact of change in accounting principle, initial adoption of new accounting principle and correction of an error in previously issued financial statements; (10) shares held in trust for Employee Stock Ownership Plan (ESOP); (11) deferred compensation related to issuance of capital stock; (12) note received for issuance of stock; (13) unamortized discount on shares; (14) description, terms, and number of warrants or rights outstanding; (15) shares under subscription and subscription receivables, effective date of new retained earnings after quasi-reorganization and deficit eliminated by quasi-reorganization and, for a period of at least ten years after the effective date, the point in time from which the new retained dates; and (16) retroactive effective of subsequent change in capital structure.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 12
-Paragraph 10
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 4
-Section 08
-Paragraph d

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 43
-Chapter 1
-Section B
-Paragraph 7, 11A
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 129
-Paragraph 2, 3, 4, 5, 6, 7, 8
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Article 4

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 5
-Paragraph 15
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29, 30, 31
-Article 5

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 4
-Section E

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 4
-Section C

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
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Reference 13: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
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Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 16: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 17: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 20: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 4.E)
-URI http://asc.fasb.org/extlink&oid=6228006&loc=d3e74512-122707

Reference 21: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Preferred Stock
-URI http://asc.fasb.org/extlink&oid=6521494

Reference 22: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.29-31)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 23: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
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-Section S99
-Paragraph 4
-Subparagraph (SAB TOPIC 4.C)
-URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187143-122770

+ Details

Share-Based Compensation	6 Months Ended
Share-Based Compensation	Jun. 30, 2012
Share-based Compensation [Abstract]
Share-Based Compensation	Share-Based Compensation In February 2012, we granted 15,000 shares of restricted stock to our executive officers under the 2009 Equity Plan. The awards vest ratably over an eight year period beginning on the fourth anniversary of the grant date, and have a fair value of $40.80 per share. The fair value was determined by using the closing share price of our common stock on the date the grant was issued. During the six months ended June 30, 2012, 7,678 shares of common stock were issued in connection with the exercise of stock options and the net proceeds received were $0.1 million. The vesting requirements for 8,750 restricted shares granted to our employees were satisfied during the six months ended June 30, 2012.

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph 64, 65, A240
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Statement of Position (SOP)
-Number 93-6
-Paragraph 53
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 14

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 50
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6406099&loc=d3e25284-112666

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901

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-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5444-113901

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 40
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929

+ Details

Other Income

6 Months Ended

Jun. 30, 2012

Other Income [Abstract]

Other Income

The components of other income are summarized as follows (in thousands):



	Three Months Ended June 30,					Six Months Ended June 30,
	2012		2011			2012		2011
Brokerage commissions	$	124	$	146		$	329	$	294
Other income (loss), net	51		(121		)	106		(318		)
Total other income (loss), net	$	175	$	25		$	435	$	(24	)

Segment Reporting

6 Months Ended

Jun. 30, 2012

Segment Reporting, Measurement Disclosures [Abstract]

Segment Reporting

Our consolidated operations can be segmented into Real Property Operations and Home Sales and Rentals. Transactions between our segments are eliminated in consolidation. Seasonal RV revenue is included in Real Property Operations’ revenues and is approximately $9.4 million annually. This seasonal revenue is recognized 48% in the first quarter, 13% in the second, 13% in the third quarter and 26% in the fourth quarter of each fiscal year.

A presentation of segment financial information is summarized as follows (amounts in thousands):



	Three Months Ended June 30, 2012									Three Months Ended June 30, 2011
	Real Property Operations			Home Sales and Home Rentals			Consolidated			Real Property Operations			Home Sales and Home Rentals			Consolidated
Revenues	$	61,507		$	17,950		$	79,457		$	52,264		$	13,573		$	65,837
Operating expenses/Cost of sales	22,104			13,119			35,223			18,092			10,155			28,247
Net operating income/Gross profit	39,403			4,831			44,234			34,172			3,418			37,590
Adjustments to arrive at net income (loss):
Other revenues	2,830			92			2,922			2,316			109			2,425
General and administrative	(5,182		)	(2,238		)	(7,420		)	(4,833		)	(1,952		)	(6,785		)
Acquisition related costs	(423		)	—			(423		)	(1,151		)	—			(1,151		)
Depreciation and amortization	(14,077		)	(6,990		)	(21,067		)	(12,462		)	(5,659		)	(18,121		)
Interest expense	(17,605		)	(9		)	(17,614		)	(15,781		)	(273		)	(16,054		)
Distributions from affiliates, net	1,900			—			1,900			850			—			850
Provision for state income tax	(53		)	—			(53		)	259			—			259
Net income (loss)	6,793			(4,314		)	2,479			3,370			(4,357		)	(987		)
Less: Preferred return to A-1 preferred OP units	579			—			579			51			—			51
Less: Net income (loss) attributable to noncontrolling interests	800			(563		)	237			243			(391		)	(148		)
Net income (loss) attributable to Sun Communities, Inc.	$	5,414		$	(3,751	)	$	1,663		$	3,076		$	(3,966	)	$	(890	)

12. Segment Reporting, continued



	Six Months Ended June 30, 2012									Six Months Ended June 30, 2011
	Real Property Operations			Home Sales and Home Rentals			Consolidated			Real Property Operations			Home Sales and Home Rentals			Consolidated
Revenues	$	125,803		$	33,854		$	159,657		$	106,100		$	27,138		$	133,238
Operating expenses/Cost of sales	43,002			24,716			67,718			35,665			20,319			55,984
Net operating income/Gross profit	82,801			9,138			91,939			70,435			6,819			77,254
Adjustments to arrive at net income (loss):
Other revenues	5,495			355			5,850			4,335			403			4,738
General and administrative	(10,240		)	(4,447		)	(14,687		)	(9,311		)	(3,925		)	(13,236		)
Acquisition related costs	(587		)	—			(587		)	(1,400		)	—			(1,400		)
Depreciation and amortization	(27,038		)	(13,897		)	(40,935		)	(23,583		)	(11,217		)	(34,800		)
Interest expense	(35,166		)	(86		)	(35,252		)	(31,803		)	(483		)	(32,286		)
Distributions from affiliates, net	2,650			—			2,650			1,200			—			1,200
Provision for state income tax	(106		)	—			(106		)	128			—			128
Net income (loss)	17,809			(8,937		)	8,872			10,001			(8,403		)	1,598
Less: Preferred return to A-1 preferred OP units	1,158			—			1,158			51			—			51
Less: Net income (loss) attributable to noncontrolling interests	1,657			(983		)	674			798			(761		)	37
Net income (loss) attributable to Sun Communities, Inc.	$	14,994		$	(7,954	)	$	7,040		$	9,152		$	(7,642	)	$	1,510



	June 30, 2012							December 31, 2011
	Real Property Operations		Home Sales and Home Rentals			Consolidated		Real Property Operations		Home Sales and Home Rentals			Consolidated
Identifiable assets:
Investment property, net	$	1,042,754	$	193,583		$	1,236,337	$	1,028,575	$	168,031		$	1,196,606
Cash and cash equivalents	5,096		(597		)	4,499		5,972		(115		)	5,857
Inventory of manufactured homes	—		4,396			4,396		—		5,832			5,832
Notes and other receivables	114,667		7,241			121,908		109,436		5,448			114,884
Other assets	41,479		3,700			45,179		41,843		2,952			44,795
Total assets	$	1,203,996	$	208,323		$	1,412,319	$	1,185,826	$	182,148		$	1,367,974

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 131
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8981-108599

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-Name Accounting Standards Codification
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Name Accounting Standards Codification
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+ Details

Derivative Instruments And Hedging Activities

6 Months Ended

Jun. 30, 2012

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Instruments And Hedging Activities

Derivative Instruments and Hedging Activities

Our objective in using interest rate derivatives is to manage exposure to interest rate movements thereby minimizing the effect of interest rate changes and the effect it could have on future cash flows. Interest rate swaps and caps are used to accomplish this objective. We require hedging derivative instruments to be highly effective in reducing the risk exposure that they are designated to hedge. We formally designate any instrument that meets these hedging criteria as a hedge at the inception of the derivative contract.

As of June 30, 2012, we had four derivative contracts consisting of two interest rate swap agreements with a total notional amount of $45.0 million and two interest rate cap agreements with a notional amount of $162.4 million. We generally employ derivative instruments that effectively convert a portion of our variable rate debt to fixed rate debt and to cap the maximum interest rate on certain variable rate borrowings. We do not enter into derivative instruments for speculative purposes.

13. Derivative Instruments and Hedging Activities, continued

The following table provides the terms of our interest rate derivative contracts that were in effect as of June 30, 2012:

Type

Purpose

Effective Date

Maturity Date

Notional

(in millions)

Based on

Variable Rate

Fixed Rate

Spread

Effective Fixed Rate

Swap

Floating to Fixed Rate

9/1/2002

7/1/2012

25.0

3 Month LIBOR

0.4682%

4.7000%

1.8700%

6.5700%

Swap

Floating to Fixed Rate

1/1/2009

1/1/2014

20.0

3 Month LIBOR

0.4682%

2.1450%

1.8700%

4.0150%

Cap

Cap Floating Rate

4/1/2012

4/1/2015

152.4

3 Month LIBOR

0.4600%

11.2650%

—%

N/A

Cap

Cap Floating Rate

10/3/2011

10/3/2016

10.0

3 Month LIBOR

0.4600%

11.0200%

—%

N/A

Subsequent to June 30, 2012 the $25.0 million interest swap described in the above table matured and was not replaced.

Generally, our financial derivative instruments are designated and qualify as cash flow hedges and the effective portion of the gain or loss on such hedges are reported as a component of accumulated other comprehensive income (loss) in our Consolidated Balance Sheets. To the extent that the hedging relationship is not effective or do not qualify as a cash flow hedge, the ineffective portion is recorded in interest expense. Hedges that received designated hedge accounting treatment are evaluated for effectiveness at the time that they are designated as well as through the hedging period.

In accordance with ASC Topic 815, Derivatives and Hedging, we have recorded the fair value of our derivative instruments designated as cash flow hedges on the balance sheet. See Note 16 for information on the determination of fair value for the derivative instruments. The following table summarizes the fair value of derivative instruments included in our Consolidated Balance Sheets as of June 30, 2012 and December 31, 2011 (in thousands):



	Asset Derivatives					Liability Derivatives
	Balance Sheet Location	Fair Value				Balance Sheet Location	Fair Value
Derivatives designated as hedging instruments		June 30, 2012		December 31, 2011			June 30, 2012	December 31, 2011
Interest rate swaps and cap agreement	Other assets	$	—	$	—	Other liabilities	503	1,106
Total derivatives designated as hedging instruments		$	—	$	—		503	1,106

These valuation adjustments will only be realized under certain situations. For example, if we terminate the swaps prior to maturity or if the derivatives fail to qualify for hedge accounting, we would need to amortize amounts currently included in other comprehensive income (loss) into interest expense over the terms of the derivative contracts. We do not intend to terminate the swaps prior to maturity and, therefore, the net of valuation adjustments through the various maturity dates will approximate zero, unless the derivatives fail to qualify for hedge accounting.

Our hedges were highly effective and had minimal effect on income. The following table summarizes the impact of derivative instruments for the six months ended June 30, 2012 and 2011 as recorded in the Consolidated Statements of Operations (in thousands):



Derivatives in cash flow hedging	Amount of Gain or (Loss) Recognized in OCI (Effective Portion)				Location of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)				Location of Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)	Amount of Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)
	Six Months Ended June 30,					Six Months Ended June 30,					Six Months Ended June 30,
	2012		2011			2012		2011			2012		2011
Interest rate swaps and cap agreement	$	599	$	422	Interest expense	$	—	$	—	Interest expense	$	3	$	5
Total	$	599	$	422	Total	$	—	$	—	Total	$	3	$	5

13. Derivative Instruments and Hedging Activities, continued

Certain of our derivative instruments contain provisions that require us to provide ongoing collateralization on derivative instruments in a liability position. As of June 30, 2012 and December 31, 2011, we had collateral deposits recorded in other assets of approximately $2.0 million and $3.1 million, respectively.

- Definition

The entire disclosure for the entity's entire derivative instruments and hedging activities. Describes an entity's risk management strategies, derivatives in hedging activities and non-hedging derivative instruments, the assets, obligations, liabilities, revenues and expenses arising therefrom, and the amounts of and methodologies and assumptions used in determining the amounts of such items.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 45
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 44
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6887037&loc=d3e80784-113994

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+ Details

Income Taxes	6 Months Ended
Income Taxes	Jun. 30, 2012
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes We have elected to be taxed as a real estate investment trust (“REIT”) as defined under Section 856(c) of the Internal Revenue Code of 1986 (“Code”), as amended. In order for us to qualify as a REIT, at least ninety-five percent (95%) of our gross income in any year must be derived from qualifying sources. In addition, a REIT must distribute at least ninety percent (90%) of its REIT ordinary taxable income to its stockholders. Qualification as a REIT involves the satisfaction of numerous requirements (some on an annual and quarterly basis) established under highly technical and complex Code provisions for which there are only limited judicial or administrative interpretations, and involves the determination of various factual matters and circumstances not entirely within our control. In addition, frequent changes occur in the area of REIT taxation which requires us to continually monitor our tax status. We analyzed the various REIT tests and confirmed that we continued to qualify as a REIT for the quarter ended June 30, 2012. As a REIT, we generally will not be subject to U.S. federal income taxes at the corporate level on the ordinary taxable income we distribute to our stockholders as dividends. If we fail to qualify as a REIT in any taxable year, our taxable income could be subject to U.S. federal income tax at regular corporate rates (including any applicable alternative minimum tax). Even if we qualify as a REIT, we may be subject to certain state and local income taxes and to U.S. federal income and excise taxes on our undistributed income. SHS, our taxable REIT subsidiary, is subject to U.S. federal income taxes. Our deferred tax assets and liabilities reflect the impact of temporary differences between the amounts of assets and liabilities for financial reporting purposes and the bases of such assets and liabilities as measured by tax laws. Deferred tax assets are reduced, if necessary, by a valuation allowance to the amount where realization is more likely than not assured after considering all available evidence. Our temporary differences primarily relate to net operating loss carryforwards and depreciation. A federal deferred tax asset of $1.0 million is included in other assets in our Consolidated Balance Sheets as of June 30, 2012 and December 31, 2011. We had no unrecognized tax benefits as of June 30, 2012 and 2011. We expect no significant increases or decreases in unrecognized tax benefits due to changes in tax positions within one year of June 30, 2012. We classify certain state taxes as income taxes for financial reporting purposes. We record Texas Margin Tax as income taxes in our financial statements. In 2011 we were also subject to Michigan Business Tax that was replaced in May 2011 by a Corporate Income Tax. We believe that we will not have any corporate income tax liability under the new law. We recorded a provision for state income taxes of approximately $0.1 million for the six months ended June 30, 2012 and a benefit of approximately $0.1 million for the six months ended June 30, 2011.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Article 4

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 136, 172
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 43, 44, 45, 46, 47, 48, 49
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Name Accounting Standards Codification
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-Subparagraph (SX 210.4-08.(h))
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+ Details

Earnings Per Share

6 Months Ended

Jun. 30, 2012

Earnings Per Share [Abstract]

Earnings Per Share

Earnings (Loss) Per Share

We have outstanding stock options and unvested restricted shares, and our Operating Partnership has Common OP Units, convertible A-1 preferred OP units and Aspen Preferred OP Units, which if converted or exercised, may impact dilution. Although our unvested restricted shares qualify as participating securities, we do not include them in the computation of basic earnings (loss) per share under the two-class method in periods we report net losses, as the result would be anti-dilutive.

Computations of basic and diluted earnings per share from continuing operations were as follows (in thousands, except per share data):



	Three Months Ended June 30,					Six Months Ended June 30,
Numerator	2012		2011			2012		2011
Basic earnings: net income (loss) attributable to common stockholders	$	1,663	$	(890	)	$	7,040	$	1,510
Add: amounts attributable to common noncontrolling interests	—		—			—		37
Diluted earnings: net income (loss) available to common stockholders and unitholders	$	1,663	$	(890	)	$	7,040	$	1,547
Denominator
Weighted average common shares outstanding	26,188		21,090			25,749		20,875
Weighted average unvested restricted stock outstanding	281		—			279		193
Basic weighted average common shares and unvested restricted stock outstanding	26,469		21,090			26,028		21,068
Add: dilutive securities	16		—			17		2,078
Diluted weighted average common shares and securities	26,485		21,090			26,045		23,146
Earnings (loss) per share available to common stockholders:
Basic	$	0.06	$	(0.04	)	$	0.27	$	0.07
Diluted	$	0.06	$	(0.04	)	$	0.27	$	0.07

We excluded certain securities from the computation of diluted earnings per share because the inclusion of these securities would have been anti-dilutive for the periods presented. The following table presents the number of outstanding potentially dilutive securities that were excluded from the computation of diluted earnings per share for the six months ended June 30, 2012 and 2011 (amounts in thousands):



	Six Months Ended June 30,
	2012	2011
Stock options	57	78
Common OP units	2,070	—
A-1 preferred OP units	1,111	49
Aspen preferred OP units	526	526
Total securities	3,764	653

The figures above represent the total number of potentially dilutive securities, and do not necessarily reflect the incremental impact to the number of diluted weighted average shares outstanding that would be computed if the impact to us had been dilutive to the calculation of earnings per share available to common stockholders.

Fair Value of Financial Instruments

6 Months Ended

Jun. 30, 2012

Fair Value Disclosures [Abstract]

Fair Value Of Financial Instruments

Fair Value of Financial Instruments

Our financial instruments consist primarily of cash and cash equivalents, accounts and notes receivable, accounts payable, derivative instruments, and debt.

ASC Topic 820, Fair Value Measurements and Disclosures, establishes guidance fair value hierarchy established by FASB guidance that requires the use of observable market data, when available, and prioritizes the inputs to valuation techniques used to measure fair value in the following categories:

Level 1—Quoted unadjusted prices for identical instruments in active markets.

Level 2—Quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active and model-derived valuations in which all observable inputs and significant value drivers are observable in active markets.

Level 3—Model derived valuations in which one or more significant inputs or significant value drivers are unobservable, including assumptions developed by us.

We utilize fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. The following methods and assumptions were used to estimate the fair value of each class of financial instruments for which it is practicable to estimate that value.

Derivative Instruments

The derivative instruments held by us are interest rate swaps and cap agreements for which quoted market prices are indirectly available. For those derivatives, we use model-derived valuations in which all observable inputs and significant value drivers are observable in active markets provided by brokers or dealers to determine the fair values of derivative instruments on a recurring basis.

Installment Notes on Manufactured Homes

The net carrying value of the installment notes on manufactured homes estimates the fair value as the interest rates in the portfolio are comparable to current prevailing market rates.

Long Term Debt and Lines of Credit

The fair value of long term debt (excluding the secured borrowing) is based on the estimates of management and on rates currently quoted and rates currently prevailing for comparable loans and instruments of comparable maturities.

Collateralized Receivables and Secured Borrowing

The fair value of these financial instruments offset each other as our collateralized receivables represent a transfer of financial assets and the cash proceeds received from these transactions have been classified as a secured borrowing in the Consolidated Balance Sheets. The net carrying value of the collateralized receivables estimates the fair value as the interest rates in the portfolio are comparable to current prevailing market rates.

Other Financial Instruments

The carrying values of cash and cash equivalents, accounts receivable, and accounts payable approximate their fair market values due to the short-term nature of these instruments.

The table below sets forth our financial assets and liabilities that required disclosure of their fair values on a recurring basis as of June 30, 2012. The table presents the carrying values and fair values of our financial instruments as of June 30, 2012 and December 31, 2011 that were measured using the valuation techniques described above. The table excludes other financial instruments such as cash and cash equivalents, accounts receivable, and accounts payable because the carrying values associated with these instruments approximate fair value since their maturities are less than one year.

16. Fair Value of Financial Instruments, continued



	June 30, 2012		December 31, 2011
Financial assets	Carrying Value	Fair Value	Carrying Value	Fair Value
Installment notes on manufactured homes, net	15,034	15,034	13,417	13,417
Collateralized receivables, net	86,539	86,539	81,176	81,176
Financial liabilities
Derivative instruments	503	503	1,106	1,106
Long term debt (excluding secured borrowing)	1,199,087	1,188,927	1,186,509	1,175,261
Secured borrowing	87,069	87,069	81,682	81,682
Lines of credit	24,632	24,632	129,034	129,034

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 44A, 44B
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 15C, 15D
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-Name Statement of Financial Accounting Standard (FAS)
-Number 107
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-Subparagraph a-d
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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-Name Statement of Financial Accounting Standard (FAS)
-Number 107
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
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-Name Statement of Financial Accounting Standard (FAS)
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
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-Number 159
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Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19207-110258

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+ Details

Recent Accounting Pronouncements	6 Months Ended
Recent Accounting Pronouncements	Jun. 30, 2012
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Recent Accounting Pronouncements	Recent Accounting Pronouncements In April 2011, the FASB issued ASU 2011-03, “Reconsideration of Effective Control for Repurchase Agreements” (ASU 2011-03) which amends ASC Topic 860, Transfers and Servicing. The updated guidance in ASC Topic 860 removes from the assessment of effective control (1) the criterion requiring the transferor to have the ability to repurchase or redeem the financial assets on substantially the agreed terms, even in the event of default by the transferee, and (2) the collateral maintenance implementation guidance related to that criterion. The updated guidance in ASC Topic 860 is effective for the first interim or annual period beginning on or after December 15, 2011. Early adoption was not permitted. The adoption of this guidance did not have any impact on our results of operations or financial condition. In May 2011, the FASB issued ASU 2011-04, “Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRSs” (ASU 2011-04) which amends ASC Topic 820, Fair Value Measurement. The updated guidance in ASC Topic 820 changes the wording used to describe the requirements in U.S. GAAP for measuring fair value and for disclosing information about fair value measurements. The updated guidance in ASC Topic 820 is effective during interim and annual periods beginning after December 15, 2011. Early adoption was not permitted. The adoption of this guidance did not have any impact on our results of operations or financial condition.

- Definition

Tabular disclosure of changes in accounting principles, including adoption of new accounting pronouncements, that describes the new methods, amount and effects on financial statement line items.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 154
-Paragraph 2, 17, 18
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 28
-Paragraph 23, 24
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 01
-Paragraph b
-Subparagraph 6
-Article 10

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-Name Accounting Standards Codification
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-Name Accounting Standards Codification
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-Publisher FASB
-Name Accounting Standards Codification
-Glossary Indirect Effects of a Change in Accounting Principle
-URI http://asc.fasb.org/extlink&oid=6515603

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Accounting Change
-URI http://asc.fasb.org/extlink&oid=6503790

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Change in Accounting Principle
-URI http://asc.fasb.org/extlink&oid=6507316

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Direct Effects of a Change in Accounting Principle
-URI http://asc.fasb.org/extlink&oid=6510796

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.10-01.(b)(6))
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-Publisher FASB
-Name Accounting Standards Codification
-Glossary Retrospective Application
-URI http://asc.fasb.org/extlink&oid=6523989

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-Name Accounting Standards Codification
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+ Details

Commitments And Contingencies	6 Months Ended
Commitments And Contingencies	Jun. 30, 2012
Commitments and Contingencies Disclosure [Abstract]
Commitments And Contingencies	Commitments and Contingencies On June 4, 2010 we settled all of the claims arising out of the litigation filed in 2004 by TJ Holdings, LLC in the Superior Court of Guilford County, North Carolina and the associated arbitration proceeding commenced by TJ Holdings in Southfield, Michigan. Under the terms of the settlement agreement, in which neither party admitted any liability whatsoever, we paid TJ Holdings $360,000 . In addition, pursuant to this settlement, TJ Holdings’ percentage ownership interest in Sun/Forest, LLC will be increased on a one time basis, in the event of a sale or refinance of all of the SunChamp Properties, to between 9.03% and 28.99% depending on our average closing stock price as reported by the NYSE during the 30 days preceding the sale or refinance of all the SunChamp Properties. Once this percentage ownership interest has been adjusted, there will be no further adjustments from subsequent sales or refinances of the SunChamp Properties. The likelihood of a sale or refinancing of all of the SunChamp properties is not probable as these properties continue to see growth potential nor do we have a need to refinance all of the properties, so we do not expect it to have a material adverse impact on our results of operations or financial condition. We are involved in various other legal proceedings arising in the ordinary course of business. All such proceedings, taken together, are not expected to have a material adverse impact on our results of operations or financial condition.

- Definition

The entire disclosure for commitments and contingencies.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Interpretation (FIN)
-Number 14
-Paragraph 3
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 5
-Paragraph 9, 10, 11, 12
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.25)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
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-Paragraph 4
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
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-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6394976&loc=d3e25287-109308

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6449706&loc=d3e16207-108621

+ Details

Real Estate Acquisitions (Tables)

6 Months Ended

Jun. 30, 2012

Business Combinations [Abstract]

Schedule of Purchase Price Allocation



At Acquisition Date	Kentland			Orange City		Cider Mill			Florida Properties			Addtl Florida Properties			Total
Investment in property	$	131,228		$	6,460	$	2,088		$	24,027		$	25,384		$	189,187
Inventory of manufactured homes	1,150			—		—			36			112			1,298
Notes	3,542			—		—			—			—			3,542
In-place leases	9,200			10		—			190			180			9,580
Other assets	1,269			—		—			97			—			1,366
Other liabilities	(2,067		)	—		(1,678		)	(1,237		)	(1,194		)	(6,176		)
Assumed debt	(52,398		)	—		—			—			—			(52,398		)

Total identifiable assets and liabilities assumed	$	91,924		$	6,470	$	410		$	23,113		$	24,482		$	146,399


Consideration

Cash ⁽¹⁾	$	27,383		$	2,533	$	410		$	6,113		$	24,482		$	60,921
A-1 preferred OP units	45,548			—		—			—			—			45,548
New debt proceeds	18,993			3,937		—			17,000			—			39,930

Fair value of total consideration transferred	$	91,924		$	6,470	$	410		$	23,113		$	24,482		$	146,399

Pro Forma Information

The unaudited pro forma results have been prepared for comparative purposes only and do not purport to be indicative of either the results of operations that would have actually occurred or the future results of operations (in thousands, except per-share data). ⁽¹⁾



	Six Months Ended June 30,
	(unaudited)
	2012		2011
Total revenues	$	165,999	$	153,739
Net income attributable to Sun Communities, Inc. shareholders	$	7,335	$	4,606
Net income per share attributable to Sun Communities, Inc. shareholders - basic	0.28		0.22
Net income per share attributable to Sun Communities, Inc. shareholders - diluted	0.28		0.20

Schedule of Revenue and Net Income from acquistions



	Revenue		Net Income
Six Months Ended June 30, 2012	$	16,162	$	2,034

- Definition

Tabular disclosure of pro forma results of operations for a material business acquisition or series of individually immaterial business acquisitions that are material in the aggregate.

+ References + Details

Investment Property (Tables)

6 Months Ended

Jun. 30, 2012

Real Estate Investment Property, Net [Abstract]

Real estate, investment property [Table Text Block]

The following table sets forth certain information regarding investment property (in thousands):



	June 30, 2012			December 31, 2011
Land	$	153,397		$	140,230
Land improvements and buildings	1,364,660			1,342,325
Rental homes and improvements	276,991			246,245
Furniture, fixtures, and equipment	42,394			41,172
Land held for future development	25,606			24,633
Investment property	1,863,048			1,794,605
Accumulated depreciation	(626,711		)	(597,999		)
Investment property, net	$	1,236,337		$	1,196,606

Transfers Of Financial Assets (Tables)

6 Months Ended

Jun. 30, 2012

Transfers of Financial Assets [Abstract]

Repurchase price percentage [Table Text Block]

In general, the repurchase price is determined as follows:



Number of Payments	Repurchase %
Less than or equal to 15	100	%
Greater than 15 but less than 64	90	%
Equal to or greater than 64 but less than 120	65	%
120 or more	50	%

Schedule of collateralized loans [Table Text Block]

The change in the aggregate gross principal balance of the collateralized receivables is as follows (in thousands):



	Six Months Ended			Year Ended
	June 30, 2012			December 31, 2011
Beginning balance	$	81,682		$	71,278
Financed sales of manufactured homes	11,467			21,509
Principal payments and payoffs from our customers	(2,671		)	(4,425		)
Principal reduction from repurchased homes	(3,409		)	(6,680		)
Total activity	5,387			10,404
Ending balance	$	87,069		$	81,682

Notes And Other Receivables (Tables)

6 Months Ended

Jun. 30, 2012

Long-term Notes and Loans, by Type, Current and Noncurrent [Abstract]

Schedule of notes and other receivables [Table Text Block]

The following table sets forth certain information regarding notes and other receivables (in thousands):



	June 30, 2012		December 31, 2011
Installment notes receivable on manufactured homes, net	$	15,034	$	13,417
Collateralized receivables, net (see Note 4)	86,539		81,176
Other receivables, net	20,335		20,291
Total notes and other receivables	$	121,908	$	114,884

Schedule of Installment Notes Receivable [Table Text Block]

The change in the aggregate gross principal balance of the installment notes is as follows (in thousands):



	Six Months Ended			Year Ended
	June 30, 2012			December 31, 2011
Beginning balance	$	13,545		$	9,466
Financed sales of manufactured homes	3,054			3,362
Acquired notes (see Note 2)	—			3,542
Principal payments and payoffs from our customers	(1,114		)	(1,728		)
Principal reduction from repossessed homes	(345		)	(1,097		)
Total activity	1,595			4,079
Ending balance	$	15,140		$	13,545

Allowance for collateralized and installment notes receivable [Table Text Block]

The allowance for losses for collateralized and installment notes receivable was $0.6 million as of June 30, 2012 and December 31, 2011.



	Six Months Ended			Year Ended
	June 30, 2012			December 31, 2011
Beginning balance	$	(635	)	$	(303	)
Lower of cost or market write-downs	60			84
Increase to reserve balance	(62		)	(416		)
Total activity	(2		)	(332		)
Ending balance	$	(637	)	$	(635	)

Investment In Affiliates (Tables)

6 Months Ended

Jun. 30, 2012

Equity Method Investments and Joint Ventures [Abstract]

Schedule of Equity Method Investments [Table Text Block]

The following table sets forth certain summarized unaudited financial information for Origen (amounts in thousands):



	Three Months Ended June 30,						Six Months Ended June 30,
	(unaudited)						(unaudited)
	2012			2011			2012			2011
Revenues	$	14,982		$	17,109		$	31,275		$	34,838
Expenses	(18,010		)	(20,866		)	(30,737		)	(41,954		)
Net loss	$	(3,028	)	$	(3,757	)	$	538		$	(7,116	)

Debt And Lines Of Credit (Tables)

6 Months Ended

Jun. 30, 2012

Debt Disclosure [Abstract]

Schedule of debt and lines of credit [Table Text Block]

The following table sets forth certain information regarding debt (in thousands):



	Principal Outstanding				Weighted Average Years to Maturity		Weighted Average Interest Rates
	June 30, 2012		December 31, 2011		June 30, 2012	December 31, 2011	June 30, 2012		December 31, 2011
Collateralized term loans - CMBS	$	625,060	$	629,229	4.5	5.0	5.5	%	5.5	%
Collateralized term loans - FNMA	372,224		364,581		10.8	11.3	4.2	%	3.6	%
Aspen and Series B-3 preferred OP Units	47,822		48,822		8.8	9.2	6.9	%	6.9	%
Secured borrowing (see Note 4)	87,069		81,682		13.0	13.2	11.1	%	11.2	%
Mortgage notes, other	153,981		143,877		3.4	3.2	3.7	%	3.8	%
Total debt	$	1,286,156	$	1,268,191	7.0	7.3	5.3	%	5.2	%

Maturities and Amortization of debt and lines of credit [Table Text Block]

As of June 30, 2012, the total of maturities and amortization of debt and lines of credit during the next five years, are as follows (in thousands)

Other Income (Tables)

6 Months Ended

Jun. 30, 2012

Other Income [Abstract]

Components of other income

The components of other income are summarized as follows (in thousands):



	Three Months Ended June 30,					Six Months Ended June 30,
	2012		2011			2012		2011
Brokerage commissions	$	124	$	146		$	329	$	294
Other income (loss), net	51		(121		)	106		(318		)
Total other income (loss), net	$	175	$	25		$	435	$	(24	)

Segment Reporting (Tables)

6 Months Ended

Jun. 30, 2012

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment [Table Text Block]

A presentation of segment financial information is summarized as follows (amounts in thousands):



	Three Months Ended June 30, 2012									Three Months Ended June 30, 2011
	Real Property Operations			Home Sales and Home Rentals			Consolidated			Real Property Operations			Home Sales and Home Rentals			Consolidated
Revenues	$	61,507		$	17,950		$	79,457		$	52,264		$	13,573		$	65,837
Operating expenses/Cost of sales	22,104			13,119			35,223			18,092			10,155			28,247
Net operating income/Gross profit	39,403			4,831			44,234			34,172			3,418			37,590
Adjustments to arrive at net income (loss):
Other revenues	2,830			92			2,922			2,316			109			2,425
General and administrative	(5,182		)	(2,238		)	(7,420		)	(4,833		)	(1,952		)	(6,785		)
Acquisition related costs	(423		)	—			(423		)	(1,151		)	—			(1,151		)
Depreciation and amortization	(14,077		)	(6,990		)	(21,067		)	(12,462		)	(5,659		)	(18,121		)
Interest expense	(17,605		)	(9		)	(17,614		)	(15,781		)	(273		)	(16,054		)
Distributions from affiliates, net	1,900			—			1,900			850			—			850
Provision for state income tax	(53		)	—			(53		)	259			—			259
Net income (loss)	6,793			(4,314		)	2,479			3,370			(4,357		)	(987		)
Less: Preferred return to A-1 preferred OP units	579			—			579			51			—			51
Less: Net income (loss) attributable to noncontrolling interests	800			(563		)	237			243			(391		)	(148		)
Net income (loss) attributable to Sun Communities, Inc.	$	5,414		$	(3,751	)	$	1,663		$	3,076		$	(3,966	)	$	(890	)

12. Segment Reporting, continued



	Six Months Ended June 30, 2012									Six Months Ended June 30, 2011
	Real Property Operations			Home Sales and Home Rentals			Consolidated			Real Property Operations			Home Sales and Home Rentals			Consolidated
Revenues	$	125,803		$	33,854		$	159,657		$	106,100		$	27,138		$	133,238
Operating expenses/Cost of sales	43,002			24,716			67,718			35,665			20,319			55,984
Net operating income/Gross profit	82,801			9,138			91,939			70,435			6,819			77,254
Adjustments to arrive at net income (loss):
Other revenues	5,495			355			5,850			4,335			403			4,738
General and administrative	(10,240		)	(4,447		)	(14,687		)	(9,311		)	(3,925		)	(13,236		)
Acquisition related costs	(587		)	—			(587		)	(1,400		)	—			(1,400		)
Depreciation and amortization	(27,038		)	(13,897		)	(40,935		)	(23,583		)	(11,217		)	(34,800		)
Interest expense	(35,166		)	(86		)	(35,252		)	(31,803		)	(483		)	(32,286		)
Distributions from affiliates, net	2,650			—			2,650			1,200			—			1,200
Provision for state income tax	(106		)	—			(106		)	128			—			128
Net income (loss)	17,809			(8,937		)	8,872			10,001			(8,403		)	1,598
Less: Preferred return to A-1 preferred OP units	1,158			—			1,158			51			—			51
Less: Net income (loss) attributable to noncontrolling interests	1,657			(983		)	674			798			(761		)	37
Net income (loss) attributable to Sun Communities, Inc.	$	14,994		$	(7,954	)	$	7,040		$	9,152		$	(7,642	)	$	1,510



	June 30, 2012							December 31, 2011
	Real Property Operations		Home Sales and Home Rentals			Consolidated		Real Property Operations		Home Sales and Home Rentals			Consolidated
Identifiable assets:
Investment property, net	$	1,042,754	$	193,583		$	1,236,337	$	1,028,575	$	168,031		$	1,196,606
Cash and cash equivalents	5,096		(597		)	4,499		5,972		(115		)	5,857
Inventory of manufactured homes	—		4,396			4,396		—		5,832			5,832
Notes and other receivables	114,667		7,241			121,908		109,436		5,448			114,884
Other assets	41,479		3,700			45,179		41,843		2,952			44,795
Total assets	$	1,203,996	$	208,323		$	1,412,319	$	1,185,826	$	182,148		$	1,367,974

- Definition

Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

+ References + Details

Derivative Instruments And Hedging Activities (Tables)

6 Months Ended

Jun. 30, 2012

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments [Table Text Block]

The following table provides the terms of our interest rate derivative contracts that were in effect as of June 30, 2012:

Type

Purpose

Effective Date

Maturity Date

Notional

(in millions)

Based on

Variable Rate

Fixed Rate

Spread

Effective Fixed Rate

Swap

Floating to Fixed Rate

9/1/2002

7/1/2012

25.0

3 Month LIBOR

0.4682%

4.7000%

1.8700%

6.5700%

Swap

Floating to Fixed Rate

1/1/2009

1/1/2014

20.0

3 Month LIBOR

0.4682%

2.1450%

1.8700%

4.0150%

Cap

Cap Floating Rate

4/1/2012

4/1/2015

152.4

3 Month LIBOR

0.4600%

11.2650%

—%

N/A

Cap

Cap Floating Rate

10/3/2011

10/3/2016

10.0

3 Month LIBOR

0.4600%

11.0200%

—%

N/A

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]

The following table summarizes the fair value of derivative instruments included in our Consolidated Balance Sheets as of June 30, 2012 and December 31, 2011 (in thousands):



	Asset Derivatives					Liability Derivatives
	Balance Sheet Location	Fair Value				Balance Sheet Location	Fair Value
Derivatives designated as hedging instruments		June 30, 2012		December 31, 2011			June 30, 2012	December 31, 2011
Interest rate swaps and cap agreement	Other assets	$	—	$	—	Other liabilities	503	1,106
Total derivatives designated as hedging instruments		$	—	$	—		503	1,106

Schedule of Derivative Instruments, Effect on Other Comprehensive Income

The following table summarizes the impact of derivative instruments for the six months ended June 30, 2012 and 2011 as recorded in the Consolidated Statements of Operations (in thousands):



Derivatives in cash flow hedging	Amount of Gain or (Loss) Recognized in OCI (Effective Portion)				Location of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)				Location of Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)	Amount of Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)
	Six Months Ended June 30,					Six Months Ended June 30,					Six Months Ended June 30,
	2012		2011			2012		2011			2012		2011
Interest rate swaps and cap agreement	$	599	$	422	Interest expense	$	—	$	—	Interest expense	$	3	$	5
Total	$	599	$	422	Total	$	—	$	—	Total	$	3	$	5

- Definition

Tabular disclosure of pertinent information about a derivative or group of derivatives on a disaggregated basis, such as for individual instruments, or small groups of similar instruments. May include a combination of the type of instrument, risks being hedged, notional amount, hedge designation, related hedged item, inception date, maturity date, or other relevant item.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5579245-113959

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5624163-113959

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-Name Accounting Standards Codification
-Topic 815
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-Paragraph 4C
-URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5624171-113959

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(n)(2))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4
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-Name Accounting Standards Codification
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Reference 9: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Name Accounting Standards Codification
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-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6935481&loc=d3e41620-113959

Reference 11: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 815
-SubTopic 25
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986

+ Details

Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2012

Earnings Per Share [Abstract]

Schedule of Calculation of Numerator and Denominator in Earnings Per Share [Table Text Block]

Computations of basic and diluted earnings per share from continuing operations were as follows (in thousands, except per share data):



	Three Months Ended June 30,					Six Months Ended June 30,
Numerator	2012		2011			2012		2011
Basic earnings: net income (loss) attributable to common stockholders	$	1,663	$	(890	)	$	7,040	$	1,510
Add: amounts attributable to common noncontrolling interests	—		—			—		37
Diluted earnings: net income (loss) available to common stockholders and unitholders	$	1,663	$	(890	)	$	7,040	$	1,547
Denominator
Weighted average common shares outstanding	26,188		21,090			25,749		20,875
Weighted average unvested restricted stock outstanding	281		—			279		193
Basic weighted average common shares and unvested restricted stock outstanding	26,469		21,090			26,028		21,068
Add: dilutive securities	16		—			17		2,078
Diluted weighted average common shares and securities	26,485		21,090			26,045		23,146
Earnings (loss) per share available to common stockholders:
Basic	$	0.06	$	(0.04	)	$	0.27	$	0.07
Diluted	$	0.06	$	(0.04	)	$	0.27	$	0.07

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

The following table presents the number of outstanding potentially dilutive securities that were excluded from the computation of diluted earnings per share for the six months ended June 30, 2012 and 2011 (amounts in thousands):



	Six Months Ended June 30,
	2012	2011
Stock options	57	78
Common OP units	2,070	—
A-1 preferred OP units	1,111	49
Aspen preferred OP units	526	526
Total securities	3,764	653

Fair Value of Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2012

Fair Value Disclosures [Abstract]

Fair Value, by Balance Sheet Grouping

The table presents the carrying values and fair values of our financial instruments as of June 30, 2012 and December 31, 2011 that were measured using the valuation techniques described above. The table excludes other financial instruments such as cash and cash equivalents, accounts receivable, and accounts payable because the carrying values associated with these instruments approximate fair value since their maturities are less than one year.

16. Fair Value of Financial Instruments, continued



	June 30, 2012		December 31, 2011
Financial assets	Carrying Value	Fair Value	Carrying Value	Fair Value
Installment notes on manufactured homes, net	15,034	15,034	13,417	13,417
Collateralized receivables, net	86,539	86,539	81,176	81,176
Financial liabilities
Derivative instruments	503	503	1,106	1,106
Long term debt (excluding secured borrowing)	1,199,087	1,188,927	1,186,509	1,175,261
Secured borrowing	87,069	87,069	81,682	81,682
Lines of credit	24,632	24,632	129,034	129,034

- Definition

Tabular disclosure of the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments, assets, and liabilities. Such certain disclosures about the financial instruments, assets, and liabilities include: (1) the fair value of the required items together with their carrying amounts (as appropriate) and (2) the methodology and assumptions used in developing such estimates of fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 10
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 14
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 15
-Subparagraph b-d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 32
-Subparagraph a, c(1), c(2), c(3), d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 159
-Paragraph 18
-Subparagraph c(2), d, e, f
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 159
-Paragraph 19
-Subparagraph a, b, c(1), d(1)
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 10
-Subparagraph (a)
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Reference 9: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6947722&loc=d3e13476-108611

Reference 10: http://www.xbrl.org/2003/role/presentationRef
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Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
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-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19207-110258

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6447952&loc=d3e13220-108610

+ Details

Real Estate Acquisitions , Schedule of Purchase Price Allocation (Details) - USD ($) $ in Thousands	Jun. 30, 2012	Mar. 31, 2012	Feb. 29, 2012	Dec. 31, 2011	Nov. 30, 2011	Jun. 30, 2011	May 31, 2011
At acquistion date
Investment in property	$ 189,187
Inventory of manufactured homes	1,298
Notes	3,542
In-place leases	9,580
Other assets	1,366
Other liabilities	(6,176)
Assumed debt	(52,398)
Total identifiable assets and liabilities assumed	146,399
Consideration
Cash	60,921
A-1 preferred OP units	45,548
New debt proceeds	39,930
Fair value of total consideration transferred	$ 146,399
Kentland [Member]
At acquistion date
Investment in property						$ 131,228
Inventory of manufactured homes						1,150
Notes						3,542
In-place leases						9,200
Other assets						1,269
Other liabilities						(2,067)
Assumed debt						(52,398)
Total identifiable assets and liabilities assumed						91,924
Consideration
Cash						27,383
A-1 preferred OP units						45,548
New debt proceeds						18,993
Fair value of total consideration transferred						$ 91,924
Orange City [Member]
At acquistion date
Investment in property							$ 6,460
Inventory of manufactured homes							0
Notes							0
In-place leases							10
Other assets							0
Other liabilities							0
Assumed debt							0
Total identifiable assets and liabilities assumed							6,470
Consideration
Cash							2,533
A-1 preferred OP units							0
New debt proceeds							3,937
Fair value of total consideration transferred							$ 6,470
Cider Mill Crossings [Member]
At acquistion date
Investment in property					$ 2,088
Inventory of manufactured homes					0
Notes					0
In-place leases					0
Other assets					0
Other liabilities					(1,678)
Assumed debt					0
Total identifiable assets and liabilities assumed					410
Consideration
Cash					410
A-1 preferred OP units					0
New debt proceeds					0
Fair value of total consideration transferred					$ 410
Florida Properties [Member]
At acquistion date
Investment in property			$ 25,384	$ 24,027
Inventory of manufactured homes			112	36
Notes			0	0
In-place leases			180	190
Other assets			0	97
Other liabilities			(1,194)	(1,237)
Assumed debt			0	0
Total identifiable assets and liabilities assumed			24,482	23,113
Consideration
Cash			24,482	6,113
A-1 preferred OP units			0	0
New debt proceeds			0	17,000
Fair value of total consideration transferred			$ 24,482	$ 23,113
Mortgage - Florida Properties [Member] \| Mortgages [Member]
Business Acquisition [Line Items]
Debt Instrument, Face Amount		$ 36,000

Real Estate Acquisitions , Pro Forma Information (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Business Acquisition [Line Items]
Total revenues	$ 165,999	$ 153,739
Net income attributable to Sun Communities, Inc. shareholders	$ 7,335	$ 4,606
Net income attributable to Sun Communities, Inc. shareholders - basic (in dollars per share)	$ 0.28	$ 0.22
Net income attributable to Sun Communities, Inc. shareholders - diluted (in dollars per share)	$ 0.28	$ 0.20
Management fees		$ 700

- Definition

The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References + Details

- Definition

The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References + Details

Real Estate Acquisitions , Schedule of Revenue and Net Income from acquistions (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Business Combination, Separately Recognized Transactions [Line Items]
Actual Revenue from acquisitions year to date	$ 82,379	$ 68,262	$ 165,507	$ 137,976
Net income attributable to Sun Communities, Inc. common stockholders	$ 1,663	$ (890)	7,040	$ 1,510
Acquisition [Member]
Business Combination, Separately Recognized Transactions [Line Items]
Actual Revenue from acquisitions year to date			16,162
Net income attributable to Sun Communities, Inc. common stockholders			$ 2,034

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 87-21
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 38
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 130
-Paragraph 10, 15
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
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-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 28, 29, 30
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 5
-Section 03
-Paragraph 19

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph 20
-Article 9

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Net Income
-URI http://asc.fasb.org/extlink&oid=6518256

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Other Comprehensive Income
-URI http://asc.fasb.org/extlink&oid=6519514

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.18)
-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04.19)
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-Name Accounting Standards Codification
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-Paragraph 6
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Reference 14: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 944
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-Paragraph 1
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Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 38
-Subparagraph d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 16: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph A7
-Appendix A

+ Details

Real Estate Acquisitions , Narrative (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2012 USD ($)	Jun. 30, 2011 USD ($)	Jun. 30, 2012 USD ($) yr	Jun. 30, 2011 USD ($)
Business Acquisition [Line Items]
Business Acquisition, Cost of Acquired Entity, Purchase Price	$ 146,399		$ 146,399
Business Acquistion, Purchase Price Allocation, Assumed Debt	52,398		52,398
Business Acquisition, Cost of Acquired Entity, Cash Paid	60,921		60,921
Investment in property	189,187		189,187
Acquisition related costs	423	$ 1,151	587	$ 1,400
Leases, Acquired-in-Place [Member]
Business Acquisition [Line Items]
In-place lease acquired residual value	$ 8,200		$ 8,200
In-place lease amortization period (in years) \| yr			7

Investment Property (Details) - USD ($) $ in Thousands	Jun. 30, 2012	Dec. 31, 2011
Real estate, investment property [Line Items]
Land	$ 153,397	$ 140,230
Land improvements and buildings	1,364,660	1,342,325
Rental homes and improvements	276,991	246,245
Furniture, fixtures, and equipment	42,394	41,172
Land held for future development	25,606	24,633
Investment property	1,863,048	1,794,605
Accumulated depreciation	(626,711)	(597,999)
Investment property, net	$ 1,236,337	$ 1,196,606

Transfers Of Financial Assets , Repurchase price percentage (Details)	6 Months Ended
	Jun. 30, 2012 payment
Minimum [Member] \| Less than or equal to 15 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Receivable Payments Notes Receivable	0
Minimum [Member] \| Greater than 15 but less than 64 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Receivable Payments Notes Receivable	16
Minimum [Member] \| Equal to or greater than 64 but less than 120 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Receivable Payments Notes Receivable	64
Minimum [Member] \| 120 or more [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Receivable Payments Notes Receivable	120
Maximum [Member] \| Less than or equal to 15 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Receivable Payments Notes Receivable	15
Maximum [Member] \| Greater than 15 but less than 64 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Receivable Payments Notes Receivable	63
Maximum [Member] \| Equal to or greater than 64 but less than 120 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Receivable Payments Notes Receivable	119
Collateralized receivables [Member] \| Less than or equal to 15 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Repurchase Percent	100.00%
Collateralized receivables [Member] \| Greater than 15 but less than 64 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Repurchase Percent	90.00%
Collateralized receivables [Member] \| Equal to or greater than 64 but less than 120 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Repurchase Percent	65.00%
Collateralized receivables [Member] \| 120 or more [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Repurchase Percent	50.00%

Transfers Of Financial Assets , Schedule of collateralized loans (Details) - Collateralized receivables [Member] - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2012	Dec. 31, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	$ 81,682	$ 71,278
Financed sales of manufactured homes	11,467	21,509
Principal payments and payoffs from our customers	2,671	4,425
Principal reduction from repurchased homes	3,409	6,680
Total activity	5,387	10,404
Ending balance	$ 87,069	$ 81,682

Transfers Of Financial Assets , Narrative (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
Cash Flows Between Transferor and Transferee, Proceeds from New Transfers	$ 11,500
Notes and other receivables	121,908		$ 114,884
Collateralized Receivables Interest Income And Expense Recognized	4,400	$ 4,000
Secured debt	1,286,156		1,268,191
Secured Debt [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Secured debt	87,069		81,682
Collateralized receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes and other receivables	86,539		81,176
Loans and Leases Receivable, Allowance	$ 500		$ 500

- Definition

The allowance for loan and lease losses represents the reserve to cover probable credit losses related to specifically identified loans and leases, as well as probable credit losses inherent in the remainder of the loan portfolio as of the balance sheet date. For banks, include currently required allocated transfer risk reserves. Include carryover of or adjustments to the allowance for loan losses in connection with business combinations determined to be appropriate.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 114
-Paragraph 20
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 9
-Section 03
-Paragraph 7
-Subparagraph d

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 5
-Paragraph 8, 9
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher OTS
-Name Federal Regulation (FR)
-Number Title 12
-Chapter V
-Section 563c.102
-Paragraph 8
-Subparagraph a(ii)
-Subsection I
-LegacyDoc This is a non-GAAP reference that was included in the 2009 taxonomy. It will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 6
-Section L
-Subsection 1

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.7(d))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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-Section 50
-Paragraph 2
-Subparagraph (b)(1)(ii)
-URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544

+ Details

Notes And Other Receivables , Schedule of notes and other receivables (Details) - USD ($) $ in Thousands	Jun. 30, 2012	Dec. 31, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total notes and other receivables, net	$ 121,908	$ 114,884
Installment notes receivable on manufactured homes, net [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total notes and other receivables, net	15,034	13,417
Collateralized receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total notes and other receivables, net	86,539	81,176
Other receivables, net [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total notes and other receivables, net	$ 20,335	$ 20,291

Notes And Other Receivables , Schedule of Installment Notes Receivable (Details) - Installment notes receivable on manufactured homes, gross [Member] - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2012	Dec. 31, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	$ 13,545	$ 9,466
Financed sales of manufactured homes	3,054	3,362
Acquired Notes Receivable	0	3,542
Principal payments and payoffs from our customers	1,114	1,728
Principal reduction from repossessed homes	345	1,097
Total activity	1,595	4,079
Ending balance	$ 15,140	$ 13,545

Notes And Other Receivables , Allowance for collateralized and installment notes receivable (Details) - Collateralized receivables, net and Installment Notes Receivables on Manufactured Homes [Member] - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2012	Dec. 31, 2011
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 635	$ 303
Lower of cost or market write-downs	60	84
Increase to reserve balance	(62)	(416)
Total activity	(2)	(332)
Ending balance	$ 637	$ 635

- Definition

+ References

+ Details

Notes And Other Receivables , Narrative (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2012	Dec. 31, 2011	Dec. 31, 2010
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes and other receivables	$ 121,908	$ 114,884
Other receivables for rent, water, sewer usage	2,900	3,000
Allowance for rent, water, sewer usage receivables	300	400
Home sale proceeds	5,200	3,300
Insurance receivables	1,100	800
Rebates receivable in association of FNMA settlement		4,900
Insurance Settlements Receivable	3,700	3,700
miscellaneous note receivable	5,000
Note receivable related to Kentland acquistion		900
Other receivables	2,400	3,700
Collateralized receivables, net and Installment Notes Receivables on Manufactured Homes [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Allowance	637	635	$ 303
Installment notes receivable on manufactured homes, net [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes and other receivables	15,034	13,417
Loans and Leases Receivable, Allowance	$ (100)	$ (100)
Receivable with imputed interest, rate	8.20%	7.90%
Receivable With Imputed Interest, Term	10 years 9 months	10 years 4 months
Collateralized receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes and other receivables	$ 86,539	$ 81,176
Loans and Leases Receivable, Allowance	$ (500)	$ (500)
Receivable With Imputed Interest, Term	13 years 1 month	13 years 3 months

Intangibles (Details) - Leases, Acquired-in-Place [Member] $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2012 USD ($)	Jun. 30, 2011 USD ($)	Jun. 30, 2012 USD ($) yr	Jun. 30, 2011 USD ($)	Dec. 31, 2011 USD ($)
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization period (in years) \| yr			7
Gross carrying amount	$ 23.7		$ 23.7		$ 25.3
Accumulated amortization	11.4		11.4		$ 10.8
Aggregate net amortization net expense	$ 0.7	$ 0.5	$ 1.7	$ 1.0

Investment In Affiliates , Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Origen Financial Services [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage	22.90%		22.90%
Investment carrying value	$ 0		$ 0
Origen Financial [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Summarized Financial Information, Net Income (Loss)	$ (3,028)	$ (3,757)	$ 538	$ (7,116)
Ownership percentage	19.00%		19.00%
Investment carrying value	$ 0		$ 0
Investment owned (in shares)	5,000,000		5,000,000
Market value of investment company	$ 7,000		$ 7,000
Origen quoted market closing price (in dollars per share)	$ 1.40		$ 1.40

- Definition

The amount of net income (loss) reported by an equity method investment of the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 159
-Paragraph 18
-Subparagraph f
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 18
-Paragraph 20
-Subparagraph d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph bb
-Article 1

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph w
-Article 1

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 4
-Section 08
-Paragraph g
-Subparagraph 1, 2

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 28
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14064-108612

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(g))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33912-111571

+ Details

Investment In Affiliates , Schedule of Investments (Details) - Origen Financial [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Schedule of Equity Method Investments [Line Items]
Total revenues	$ 14,982	$ 17,109	$ 31,275	$ 34,838
Total expenses	(18,010)	(20,866)	(30,737)	(41,954)
Net loss	$ (3,028)	$ (3,757)	$ 538	$ (7,116)

- Definition

The amount of net income (loss) reported by an equity method investment of the entity.

+ References

+ Details

Debt And Lines Of Credit , Table - Schedule of debt and lines of credit (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2012	Dec. 31, 2011
Debt Instrument [Line Items]
Debt	$ 1,286,156	$ 1,268,191
Debt weighted average to maturity, years	6 years 11 months	7 years 4 months
Weighted average interest rate	5.30%	5.20%
Collateralized term loans - CMBS [Member]
Debt Instrument [Line Items]
Debt	$ 625,060	$ 629,229
Debt weighted average to maturity, years	4 years 6 months	5 years
Weighted average interest rate	5.50%	5.50%
Collateralized term loans - FNMA [Member]
Debt Instrument [Line Items]
Debt	$ 372,224	$ 364,581
Debt weighted average to maturity, years	10 years 10 months	11 years 4 months
Weighted average interest rate	4.20%	3.60%
Aspen and Series B-3 Preferred OP Units [Member]
Debt Instrument [Line Items]
Debt	$ 47,822	$ 48,822
Debt weighted average to maturity, years	8 years 10 months	9 years 3 months
Weighted average interest rate	6.90%	6.90%
Secured borrowing [Member]
Debt Instrument [Line Items]
Debt	$ 87,069	$ 81,682
Debt weighted average to maturity, years	13 years	13 years 3 months
Weighted average interest rate	11.10%	11.20%
Mortgage notes, other [Member]
Debt Instrument [Line Items]
Debt	$ 153,981	$ 143,877
Debt weighted average to maturity, years	3 years 4 months	3 years 3 months
Weighted average interest rate	3.70%	3.80%

Debt And Lines Of Credit , Table - Maturities and Amortization of debt and lines of credit (Details) $ in Thousands	Jun. 30, 2012 USD ($)
Debt Instrument [Line Items]
Total Due	$ 1,310,787
2012	14,265
2013	64,631
2014	212,207
2015	58,696
2016	333,387
After 5 years	627,601
Lines of Credit [Member]
Debt Instrument [Line Items]
2012	0
2013	4,531
2014	0
2015	20,100
2016	0
After 5 years	0
Mortgage maturities [Member]
Debt Instrument [Line Items]
2012	0
2013	33,762
2014	185,754
2015	16,622
2016	312,585
After 5 years	453,208
Mortgage principal amortization [Member]
Debt Instrument [Line Items]
2012	8,746
2013	18,240
2014	17,899
2015	17,182
2016	15,492
After 5 years	71,775
Aspen and Series B-3 Preferred OP Units [Member]
Debt Instrument [Line Items]
2012	3,670
2013	4,145
2014	4,225
2015	0
2016	0
After 5 years	35,782
Secured borrowing [Member]
Debt Instrument [Line Items]
2012	1,849
2013	3,953
2014	4,329
2015	4,792
2016	5,310
After 5 years	$ 66,836

Debt And Lines Of Credit , Narrative - Collateralized Term Loans (Details) $ in Thousands	1 Months Ended						3 Months Ended	6 Months Ended	12 Months Ended
	Jul. 31, 2011 USD ($)	Jun. 30, 2011 USD ($) properties	May 31, 2011 USD ($) properties	Mar. 31, 2011 USD ($) properties	May 31, 2010	Mar. 31, 2009	Mar. 31, 2012 USD ($)	Jun. 30, 2012 USD ($) properties sites	Dec. 31, 2011 USD ($) properties
Debt Instrument [Line Items]
Debt weighted average to maturity, length								6 years 11 months	7 years 4 months
Total debt								$ 1,286,156	$ 1,268,191
Collateralized term loans - CMBS [Member]
Debt Instrument [Line Items]
Debt weighted average to maturity, length								4 years 6 months	5 years
Debt Instrument, Face Amount				$ 115,000
Stated interest rate				5.837%
Number of properties securing a debt instument (in properties) \| properties				11
Refinanced amount				$ 104,800
Total debt								$ 625,060	$ 629,229
Mortgages [Member]
Debt Instrument [Line Items]
Debt weighted average to maturity, length								3 years 4 months	3 years 3 months
Number of properties securing a debt instument (in properties) \| properties								31
Total debt								$ 153,981	$ 143,877
Number of sites (in sites) \| sites								8,160
Property, net book value								$ 256,300
Mortgages [Member] \| June 2012 mortgage refinance [Domain]
Debt Instrument [Line Items]
Debt Instrument, Face Amount								$ 14,100
Number of properties securing a debt instument (in properties)								2
Refinanced amount								$ 14,000
Mortgages [Member] \| June 2012 mortgage refinance [Domain] \| Libor, 30 day rate [Domain]
Debt Instrument [Line Items]
Basis points								2.00%
Mortgages [Member] \| Mortgage - refinancing BoA [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount			$ 23,600
Stated interest rate			5.38%
Number of properties securing a debt instument (in properties) \| properties			3
Refinanced amount			$ 17,900
Mortgages [Member] \| Mortgage - Kentland acquisition [Member]
Debt Instrument [Line Items]
Debt weighted average to maturity, length		4 years 5 months						3 years 11 months
Number of properties securing a debt instument (in properties) \| properties		12
Mortgages [Member] \| Mortgage - variable financing BoA Kentland and Orange City [Member]
Debt Instrument [Line Items]
Debt weighted average to maturity, length		3 years 9 months						2 years 11 months
Debt Instrument, Face Amount		$ 22,900
Number of properties securing a debt instument (in properties) \| properties		6
Mortgages [Member] \| Mortgage - Florida Properties 1 [Member]
Debt Instrument [Line Items]
Debt weighted average to maturity, length								4 years 6 months	5 years
Debt Instrument, Face Amount									$ 17,000
Number of properties securing a debt instument (in properties) \| properties									3
Mortgages [Member] \| Mortgage - Florida Properties 2 [Member]
Debt Instrument [Line Items]
Debt weighted average to maturity, length							4 years 8 months
Debt Instrument, Face Amount							$ 19,000
Number of properties securing a debt instument (in properties) \| properties								3
Collateralized term loans - FNMA [Member]
Debt Instrument [Line Items]
Debt weighted average to maturity, length								10 years 10 months	11 years 4 months
Total debt								$ 372,224	$ 364,581
Collateralized term loans - FNMA [Member] \| Collateralized term loans - PNC and FNMA [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 367,000
Collateralized term loans - FNMA [Member] \| Collateralized Term Loans - May 2023 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 10,000
LIBOR rate term	90 days
Amortization period of principal and interest payments	30 years
Collateralized commercial mortgage backed securities [Member]
Debt Instrument [Line Items]
Number of properties securing a debt instument (in properties) \| properties								96
Total debt								$ 1,000,000
Number of sites (in sites) \| sites								35,107
Property, net book value								$ 574,800
Investor spread basis points [Member] \| Collateralized term loans - FNMA [Member] \| Collateralized Term Loans - May 2023 [Member] \| 90-day LIBOR Index [Member]
Debt Instrument [Line Items]
Basis points	0.00%
Variable facility fee basis points [Member] \| Collateralized term loans - FNMA [Member] \| Collateralized Term Loans - May 2023 [Member] \| 90-day LIBOR Index [Member]
Debt Instrument [Line Items]
Basis points	0.00%
Line of credit - rental home portfolio [Member] \| Line of Credit [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Interest only payment term					5 years
Line of credit - rental home portfolio [Member] \| Line of Credit [Member] \| Prime Rate [Member]
Debt Instrument [Line Items]
Basis points					0.00%
Line of credit - manufactured home floor plan facility [Member] \| Line of Credit [Member]
Debt Instrument [Line Items]
Line of credit facility, committed term						12 months
Facility lease termination notice, term						5 years
Line of credit - manufactured home floor plan facility [Member] \| Line of Credit [Member] \| Prime Rate [Member]
Debt Instrument [Line Items]
Basis points						0.00%

Debt And Lines Of Credit , Narrative - Aspen Preferred OP Units and Series B-3 preferred OP units (Details) $ / shares in Units, $ in Millions	6 Months Ended
	Jun. 30, 2012 USD ($) shares $ / shares
Aspen Preferred OP Units [Member] \| Convertible debt - Aspen Preferred OP Units January 2024 [Member]
Debt Instrument [Line Items]
Stated interest rate, maximum	9.00%
Convertible units to shares (in shares) \| shares	526,212
Conversion Price (in dollars per share) \| $ / shares	$ 68
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum	6.50%
Debt Instrument, Interest Rate During Period	6.50%
Series B-3 preferred OP units [Domain]
Debt Instrument [Line Items]
Payments to retire preferred operating patnership units \| $	$ 1.0

Debt And Lines Of Credit , Narrative - Mortgage Notes (Details) $ in Thousands	1 Months Ended			3 Months Ended	6 Months Ended	12 Months Ended
	Feb. 29, 2012 USD ($)	Jun. 30, 2011 USD ($) properties sites	May 31, 2011 USD ($) properties	Mar. 31, 2012 USD ($)	Jun. 30, 2012 USD ($) properties sites	Dec. 31, 2011 USD ($) properties
Debt Instrument [Line Items]
Debt weighted average to maturity, length					6 years 11 months	7 years 4 months
Weighted average interest rate					5.30%	5.20%
Loans assumed					$ 52,398
Total debt					$ 1,286,156	$ 1,268,191
Mortgages [Member]
Debt Instrument [Line Items]
Debt weighted average to maturity, length					3 years 4 months	3 years 3 months
Number of properties securing a debt instument (in properties) \| properties					31
Weighted average interest rate					3.70%	3.80%
Total debt					$ 153,981	$ 143,877
Number of sites (in sites) \| sites					8,160
Property, net book value					$ 256,300
Mortgages [Member] \| Mortgage - refinancing BoA [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount			$ 23,600
Stated interest rate			5.38%
Number of properties securing a debt instument (in properties) \| properties			3
Extinguishment of debt amount			$ 17,900
Mortgages [Member] \| Mortgage - Kentland acquisition [Member]
Debt Instrument [Line Items]
Debt weighted average to maturity, length		4 years 5 months			3 years 11 months
Number of properties securing a debt instument (in properties) \| properties		12
Weighted average interest rate		5.70%			5.61%
Loans assumed		$ 52,400
Mortgages [Member] \| Mortgage - variable financing BoA Kentland and Orange City [Member]
Debt Instrument [Line Items]
Debt weighted average to maturity, length		3 years 9 months			2 years 11 months
Debt Instrument, Face Amount		$ 22,900
Number of properties securing a debt instument (in properties) \| properties		6
Weighted average interest rate		3.10%			3.10%
Mortgages [Member] \| Mortgage - Florida Properties 1 [Member]
Debt Instrument [Line Items]
Debt weighted average to maturity, length					4 years 6 months	5 years
Debt Instrument, Face Amount						$ 17,000
Number of properties securing a debt instument (in properties) \| properties						3
Weighted average interest rate					2.75%	2.78%
Mortgages [Member] \| Mortgage - Florida Properties [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount				$ 36,000
Mortgages [Member] \| Mortgage - Florida Properties 2 [Member]
Debt Instrument [Line Items]
Debt weighted average to maturity, length				4 years 8 months
Debt Instrument, Face Amount				$ 19,000
Number of properties securing a debt instument (in properties) \| properties					3
Weighted average interest rate				2.74%
Mortgages [Member] \| Mortgage - Leisure Village [Member]
Debt Instrument [Line Items]
Extinguishment of debt amount					$ 2,700
Mortgages [Member] \| June 2012 mortgage refinance [Domain]
Debt Instrument [Line Items]
Debt Instrument, Face Amount					$ 14,100
Number of properties securing a debt instument (in properties)					2
Weighted average interest rate					2.25%
Extinguishment of debt amount					$ 14,000
Kentland [Member]
Debt Instrument [Line Items]
Loans assumed		$ 52,398
Number of sites (in sites) \| sites		5,434
Kentland [Member] \| Mortgages [Member] \| Mortgage - variable financing BoA Kentland and Orange City [Member]
Debt Instrument [Line Items]
Number of properties securing a debt instument (in properties) \| properties		5
Repayment of Debt [Member] \| Mortgages [Member] \| Mortgage - variable financing BoA Kentland and Orange City [Member]
Debt Instrument [Line Items]
Extinguishment of debt amount	$ 4,500

Debt And Lines Of Credit , Narrative - Line of Credit (Details) - USD ($)	1 Months Ended			6 Months Ended	12 Months Ended
	Sep. 30, 2011	May 31, 2010	Mar. 31, 2009	Jun. 30, 2012	Dec. 31, 2011	Aug. 31, 2011
Line of Credit Facility [Line Items]
Rental properties net book value				$ 276,991,000	$ 246,245,000
Weighted average interest rate				5.30%	5.20%
Debt weighted average to maturity, length				6 years 11 months	7 years 4 months
Line of Credit [Member] \| Line of Credit - Bank of America [Member]
Line of Credit Facility [Line Items]
Line of credit, borrowing capacity	$ 130,000,000					$ 115,000,000
Line of credit facility, additional borrowing capacity	$ 20,000,000
Line of credit, outstanding balance				$ 20,100,000	$ 107,500,000
Line of credit, remaining borrowing capacity				105,900,000	18,500,000
Letters of credit outstanding, amount				$ 4,000,000	4,000,000
Effective interest rate, minimum				2.25%
Effective interest rate, maximum				2.95%
Line of credit, option to extend term	1 year
Basis points				2.50%
Line of Credit [Member] \| Line of credit - rental home portfolio [Member]
Line of Credit Facility [Line Items]
Line of credit, borrowing capacity		$ 20,000,000
Line of credit, outstanding balance				$ 0	16,000,000
Line of credit, outstanding loan balance, percent		200.00%
Line of Credit Facility, Interest only payment term		5 years
Line of Credit [Member] \| Line of credit - manufactured home floor plan facility [Member]
Line of Credit Facility [Line Items]
Line of credit, borrowing capacity					12,000,000
Line of credit, outstanding balance				$ 4,500,000	$ 5,500,000
Line of credit facility, committed term			12 months
Facility lease termination notice, term			5 years
Prime Rate [Member] \| Line of Credit [Member] \| Line of credit - rental home portfolio [Member]
Line of Credit Facility [Line Items]
Weighted average interest rate				5.50%
Basis points		0.00%
Prime Rate [Member] \| Line of Credit [Member] \| Line of credit - manufactured home floor plan facility [Member]
Line of Credit Facility [Line Items]
Effective interest rate, maximum			6.00%
Weighted average interest rate				7.00%
Basis points			0.00%

Equity Transactions Narrative (Details) $ / shares in Units, $ in Thousands		1 Months Ended		3 Months Ended		6 Months Ended		7 Months Ended	12 Months Ended
	Apr. 27, 2012 USD ($)	Jan. 31, 2012 USD ($) $ / shares shares	Jan. 31, 2011 USD ($) $ / shares shares	Jun. 30, 2012 $ / shares	Jun. 30, 2011 $ / shares	Jun. 30, 2012 USD ($) $ / shares shares	Jun. 30, 2011 USD ($) $ / shares shares	Dec. 31, 2011 shares	Dec. 31, 2011 USD ($) shares	May 10, 2012 USD ($)	Mar. 31, 2012 USD ($)	Aug. 31, 2010 USD ($) shares	Nov. 30, 2004 shares
Class of Stock [Line Items]
Proceeds from issuance of common stock						$ 157,343	$ 47,097
Dividends per common share: \| $ / shares				$ 0.63	$ 0.63	$ 1.26	$ 1.26
Common Stock [Member]
Class of Stock [Line Items]
Authorized to be repurchased (in shares) \| shares													1,000,000
Remaining number of shares authorized to be repurchased (in shares) \| shares								400,000	400,000
Dividends per common share: \| $ / shares						$ 0.63
Common Stock [Member] \| Dividend Paid [Member]
Class of Stock [Line Items]
Dividends, Common Stock, Cash Paid	$ 18,000
Common OP Units [Member]
Class of Stock [Line Items]
Conversion of Common OP Units to common stock (in shares) \| shares						2,000	10,249
Form S-3 - May 2012 [Member] [Domain] \| Common Stock [Member]
Class of Stock [Line Items]
Proposed offering amount from issuing common stock, preferred stock, and debt securities										$ 100,000
New shares issued (in shares) \| shares						0
S-3 - Total [Member] \| Common Stock [Member]
Class of Stock [Line Items]
Weighted average sale price (in dollars per share) \| $ / shares						$ 37.22
Proceeds from issuance of common stock						$ 1,500
Form S-3 - May 2011 [Member] \| Common Stock [Member]
Class of Stock [Line Items]
New shares issued (in shares) \| shares						40,524
Common Stock Purchase Agreement [Member] \| Common Stock [Member]
Class of Stock [Line Items]
New shares issued (in shares) \| shares			915,827
Weighted average sale price (in dollars per share) \| $ / shares			$ 32.76
Proceeds from issuance of common stock			$ 30,000
Purchase commitment of common stock, amount												$ 100,000
Purchase committment of common stock (in shares) \| shares												3,889,493
Preferred OP Units [Member] \| Common Stock [Member]
Class of Stock [Line Items]
Preferred OP units issued									$ 45,500
Preferred OP unit, conversion price (in dollars per share) \| $ / shares					41		$ 41
Preferred Operating Partnerhsip units, par value (in dollars per share) \| $ / shares					$ 100		$ 100
Preferred OP units before June 2013 [Member] \| Common Stock [Member]
Class of Stock [Line Items]
Preferred OP unit return rate								5.10%
Preferred OP units after June 2013 [Member] \| Common Stock [Member]
Class of Stock [Line Items]
Preferred OP unit return rate								6.00%
Registered public offering [Member] \| Common Stock [Member] \| Registered public offering [Member]
Class of Stock [Line Items]
New shares issued (in shares) \| shares		4,600,000
Weighted average sale price (in dollars per share) \| $ / shares		$ 35.50
Proceeds from issuance of common stock		$ 156,000
Proceeds from common stock used to extinguish debt		123,500
Proceeds from common stock used to purchase property		$ 25,000
Mortgages [Member] \| Mortgage - Florida Properties [Member]
Class of Stock [Line Items]
Debt Instrument, Face Amount											$ 36,000

Share-Based Compensation , Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	6 Months Ended
	Feb. 29, 2012	Jun. 30, 2012	Jun. 30, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Proceeds from Stock Options Exercised		$ 149	$ 690
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, shares (in shares)	15,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 40.80
Vested restricted stock (in shares)		8,750
Non-employee director \| Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options granted (in shares)		7,678

- Definition

The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph A240
-Subparagraph i
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 18
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 19
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (j)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3255-108585

+ Details

Other Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
Other Income (Details) - USD ($) $ in Thousands	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Other Income [Abstract]
Brokerage commissions	$ 124	$ 146	$ 329	$ 294
Other, net	51	(121)	106	(318)
Other income (loss), net	$ 175	$ 25	$ 435	$ (24)

Segment Reporting Segment Reporting (Details) - USD ($) $ in Thousands	3 Months Ended					6 Months Ended		12 Months Ended
	Jun. 30, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011	Dec. 31, 2010
Segment Reporting Information, Profit (Loss) [Abstract]
Revenues	$ 79,457			$ 65,837		$ 159,657	$ 133,238
Operating expenses/Cost of sales	35,223			28,247		67,718	55,984
Net operating income/Gross profit	44,234			37,590		91,939	77,254
Adjustments to arrive at net income (loss):
Other revenues	2,922			2,425		5,850	4,738
General and administrative	(7,420)			(6,785)		(14,687)	(13,236)
Acquisition related costs	(423)			(1,151)		(587)	(1,400)
Depreciation and amortization	(21,067)			(18,121)		(40,935)	(34,800)
Interest expense	(17,614)			(16,054)		(35,252)	(32,286)
Distributions from affiliates	1,900			850		2,650	1,200
Provision for state income taxes	(53)			259		(106)	128
Net income (loss)	2,479			(987)		8,872	1,598
Less: Preferred return to A-1 preferred OP units	579			51		1,158	51
Less: Net income (loss) attributable to noncontrolling interests	237			(148)		674	37
Net Income (Loss) Attributable to Sun Communities, Inc.	1,663			(890)		7,040	1,510
Identifiable assets:
Investment property, net	1,236,337	$ 1,196,606				1,236,337		$ 1,196,606
Cash and cash equivalents	4,499	5,857		$ 4,007		4,499	4,007	5,857	$ 8,420
Inventory of manufactured homes	4,396	5,832				4,396		5,832
Notes and other receivables	121,908	114,884				121,908		114,884
Other assets	45,179	44,795				45,179		44,795
TOTAL ASSETS	1,412,319	$ 1,367,974				1,412,319		1,367,974
Real Property Operations Segment [Member]
Segment Reporting Information [Line Items]
Seasonal RV Revenue Approximation								9,400
Seasonal RV Rental Revenue Recognized, Percentage		26.00%	13.00%	13.00%	48.00%
Segment Reporting Information, Profit (Loss) [Abstract]
Revenues	61,507			$ 52,264		125,803	106,100
Operating expenses/Cost of sales	22,104			18,092		43,002	35,665
Net operating income/Gross profit	39,403			34,172		82,801	70,435
Adjustments to arrive at net income (loss):
Other revenues	2,830			2,316		5,495	4,335
General and administrative	(5,182)			(4,833)		(10,240)	(9,311)
Acquisition related costs	(423)			(1,151)		(587)	(1,400)
Depreciation and amortization	(14,077)			(12,462)		(27,038)	(23,583)
Interest expense	(17,605)			(15,781)		(35,166)	(31,803)
Distributions from affiliates	1,900			850		2,650	1,200
Provision for state income taxes	(53)			259		(106)	128
Net income (loss)	6,793			3,370		17,809	10,001
Less: Preferred return to A-1 preferred OP units	579			51		1,158	51
Less: Net income (loss) attributable to noncontrolling interests	800			243		1,657	798
Net Income (Loss) Attributable to Sun Communities, Inc.	5,414			3,076		14,994	9,152
Identifiable assets:
Investment property, net	1,042,754	$ 1,028,575				1,042,754		1,028,575
Cash and cash equivalents	5,096	5,972				5,096		5,972
Inventory of manufactured homes	0	0				0		0
Notes and other receivables	114,667	109,436				114,667		109,436
Other assets	41,479	41,843				41,479		41,843
TOTAL ASSETS	1,203,996	1,185,826				1,203,996		1,185,826
Home Sales and Home Rentals Segment [Member]
Segment Reporting Information, Profit (Loss) [Abstract]
Revenues	17,950			13,573		33,854	27,138
Operating expenses/Cost of sales	13,119			10,155		24,716	20,319
Net operating income/Gross profit	4,831			3,418		9,138	6,819
Adjustments to arrive at net income (loss):
Other revenues	92			109		355	403
General and administrative	(2,238)			(1,952)		(4,447)	(3,925)
Acquisition related costs	0			0		0	0
Depreciation and amortization	(6,990)			(5,659)		(13,897)	(11,217)
Interest expense	(9)			(273)		(86)	(483)
Distributions from affiliates	0			0		0	0
Provision for state income taxes	0			0		0	0
Net income (loss)	(4,314)			(4,357)		(8,937)	(8,403)
Less: Preferred return to A-1 preferred OP units	0			0		0	0
Less: Net income (loss) attributable to noncontrolling interests	(563)			(391)		(983)	(761)
Net Income (Loss) Attributable to Sun Communities, Inc.	(3,751)			$ (3,966)		(7,954)	$ (7,642)
Identifiable assets:
Investment property, net	193,583	168,031				193,583		168,031
Cash and cash equivalents	(597)	(115)				(597)		(115)
Inventory of manufactured homes	4,396	5,832				4,396		5,832
Notes and other receivables	7,241	5,448				7,241		5,448
Other assets	3,700	2,952				3,700		2,952
TOTAL ASSETS	$ 208,323	$ 182,148				$ 208,323		$ 182,148

Derivative Instruments And Hedging Activities , Derivative Contracts (Details) $ in Millions	6 Months Ended
	Jun. 30, 2012 USD ($) Derivative_Contracts	Jul. 01, 2012 USD ($)	Dec. 31, 2011 USD ($)
Interest Rate Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Number of Interest Rate Derivatives Held (number of derivative contracts) \| Derivative_Contracts	4
Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Number of Interest Rate Derivatives Held (number of derivative contracts) \| Derivative_Contracts	2
Notional Amount of Derivatives	$ 45.0
Interest Rate Swap [Member] \| Derivative Maturing 2012 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Notional Amount of Derivatives	$ 25.0
Derivative, Type	Swap
Derivative, Purpose	Floating to Fixed Rate
Derivative, Effective Date	Sep. 01, 2002
Derivative, Maturity Date	Jul. 01, 2012
Derivative, Based on	3 Month LIBOR
Derivative, Variable Rate	0.46815%
Derivative, Fixed Rate	4.70%
Derivative, Spread on Variable Rate	1.87%
Derivative, Effective Fixed Rate	6.57%
Interest Rate Swap [Member] \| Derivative Maturing 2014 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Notional Amount of Derivatives	$ 20.0
Derivative, Type	Swap
Derivative, Purpose	Floating to Fixed Rate
Derivative, Effective Date	Jan. 01, 2009
Derivative, Maturity Date	Jan. 01, 2014
Derivative, Based on	3 Month LIBOR
Derivative, Variable Rate	0.46815%
Derivative, Fixed Rate	2.145%
Derivative, Spread on Variable Rate	1.87%
Derivative, Effective Fixed Rate	4.015%
Interest Rate Cap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Number of Interest Rate Derivatives Held (number of derivative contracts) \| Derivative_Contracts	2
Notional Amount of Derivatives	$ 162.4
Interest Rate Cap [Member] \| Derivative Maturing 2015 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Notional Amount of Derivatives	$ 152.4
Derivative, Type	Cap
Derivative, Purpose	Cap Floating Rate
Derivative, Effective Date	Apr. 01, 2012
Derivative, Maturity Date	Apr. 01, 2015
Derivative, Based on	3 Month LIBOR
Derivative, Variable Rate	0.46%
Derivative, Fixed Rate	11.265%
Derivative, Spread on Variable Rate	0.00%
Interest Rate Cap [Member] \| Derivative Maturing 2016 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Notional Amount of Derivatives	$ 10.0
Derivative, Type	Cap
Derivative, Purpose	Cap Floating Rate
Derivative, Effective Date	Oct. 03, 2011
Derivative, Maturity Date	Oct. 03, 2016
Derivative, Based on	3 Month LIBOR
Derivative, Variable Rate	0.46%
Derivative, Fixed Rate	11.02%
Derivative, Spread on Variable Rate	0.00%
Other Assets [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Collateral Already Posted, Aggregate Fair Value	$ 2.0		$ 3.1
Interest Rate Swap, matured and was not replaced [Domain] \| Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Notional Amount of Derivatives		$ 25.0

Derivative Instruments And Hedging Activities , Balance Sheet Location (Details) - USD ($) $ in Thousands	Jun. 30, 2012	Dec. 31, 2011
Derivatives, Fair Value [Line Items]
Asset Derivatives	$ 0	$ 0
Liability Derivatives	503	1,106
Other Assets [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	0	0
Collateral deposits recorded in other assets	2,000	3,100
Other liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	$ 503	$ 1,106

- Definition

Fair values as of the balance sheet date of all assets resulting from contracts that meet the criteria of being accounted for as derivative instruments, net of the effects of master netting arrangements.

+ References + Details

- Definition

Fair values as of the balance sheet date of all liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments, net of the effects of master netting arrangements.

+ References + Details

Derivative Instruments And Hedging Activities , Statement of Operation Location (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in OCI (Effective Portion)	$ 599	$ 422
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	0	0
Amount of Gain or (Loss) Recognized in Income on Derviative (Ineffective Portion and Amount Excluded from Effectiveness Testing)	3	5
Interest rate swaps and cap agreement [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in OCI (Effective Portion)	599	422
Interest rate swaps and cap agreement [Member] \| Interest expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	0	0
Amount of Gain or (Loss) Recognized in Income on Derviative (Ineffective Portion and Amount Excluded from Effectiveness Testing)	$ 3	$ 5

Income Taxes , Narrative (Details) - USD ($) $ in Millions	6 Months Ended
Income Taxes , Narrative (Details) - USD ($) $ in Millions	Jun. 30, 2012	Jun. 30, 2011
Income Tax Disclosure [Abstract]
Deferred Tax Assets, Net	$ 1.0
Provision for state income taxes	$ 0.1	$ 0.1

Earnings Per Share , Calculation of Numerator and Denominator (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Numerator
Basic earnings: net income attributable to common stockholders	$ 1,663	$ (890)	$ 7,040	$ 1,510
Add: preferred return to A-1 preferred OP units	(579)	(51)	(1,158)	(51)
Add: amounts attributable to noncontrolling interest	0	0	0	37
Diluted earnings: net income available to common stockholders and unitholders	$ 1,663	$ (890)	$ 7,040	$ 1,547
Denominator
Weighted average common shares outstanding	26,188	21,090	25,749	20,875
Weighted average unvested restricted stock outstanding	281	0	279	193
Basic Weighted average common shares outstanding	26,469	21,090	26,028	21,068
Add: dilutive securities	16	0	17	2,078
Diluted weighted average common shares	26,485	21,090	26,045	23,146
Basic	$ 0.06	$ (0.04)	$ 0.27	$ 0.07
Diluted	$ 0.06	$ (0.04)	$ 0.27	$ 0.07

Earnings Per Share , Antidilutive Securities Excluded from Computation of Loss Per Share (Details) - shares shares in Thousands	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	3,764	653
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	57	78
Common OP Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	2,070	0
Aspen Preferred OP Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	1,111	49
Convertible Preferred OP Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	526	526

- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 13, 14
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 171
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 40
-Subparagraph c
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Diluted Earnings Per Share
-URI http://asc.fasb.org/extlink&oid=6510752

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Contingent Stock Agreement
-URI http://asc.fasb.org/extlink&oid=6508534

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Antidilution
-URI http://asc.fasb.org/extlink&oid=6505113

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 07-4
-Paragraph 4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Fair Value of Financial Instruments , By Balance Sheet Grouping (Details) - USD ($) $ in Thousands	Jun. 30, 2012	Dec. 31, 2011
Financial assets
Derivative instruments	$ 0	$ 0
Carrying Value [Member] \| Fair Value, Measurements, Recurring [Member]
Financial liabilities
Derivative Liabilities	503	1,106
Long term debt excluding secured borrowings	1,199,087	1,186,509
Secured borrowing	87,069	81,682
Lines of credit	24,632	129,034
Fair Value [Member] \| Fair Value, Measurements, Recurring [Member]
Financial liabilities
Derivative Liabilities	503	1,106
Long term debt excluding secured borrowings	1,188,927	1,175,261
Secured borrowing	87,069	81,682
Lines of credit	24,632	129,034
Installment notes receivable on manufactured homes, net [Member] \| Carrying Value [Member] \| Fair Value, Measurements, Recurring [Member]
Financial assets
Receivables	15,034	13,417
Installment notes receivable on manufactured homes, net [Member] \| Fair Value [Member] \| Fair Value, Measurements, Recurring [Member]
Financial assets
Receivables	15,034	13,417
Collateralized receivables [Member] \| Carrying Value [Member] \| Fair Value, Measurements, Recurring [Member]
Financial assets
Receivables	86,539	81,176
Collateralized receivables [Member] \| Fair Value [Member] \| Fair Value, Measurements, Recurring [Member]
Financial assets
Receivables	$ 86,539	$ 81,176

Fair Value of Financial Instruments , Measurement Inputs (Details) - USD ($) $ in Thousands	Jun. 30, 2012	Dec. 31, 2011
Assets
Derivative instruments	$ 0	$ 0

- Definition

+ References + Details

Commitments And Contingencies (Details) - TJ Holdings, LLC [Member]	12 Months Ended
	Dec. 31, 2010 USD ($)
Loss Contingencies [Line Items]
Payments for Legal Settlements	$ 360,000
Minimum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Settlement Agreement, Ownership Percentage, After Qualifying Event with Joint Venture Properties	9.03%
Maximum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Settlement Agreement, Closing Stock Price Determination, Period Preceeding Qualifying Event with Joint Venture Properties	30 days
Loss Contingency, Settlement Agreement, Ownership Percentage, After Qualifying Event with Joint Venture Properties	28.99%

Label	Element	Value
Cider Mill Crossings [Member]
Number of Units in Real Estate Property	us-gaap_NumberOfUnitsInRealEstateProperty	262
Blazing Star [Member] \| Acquisition [Member]
Business Acquisition, Cost of Acquired Entity, Purchase Price	us-gaap_BusinessAcquisitionCostOfAcquiredEntityPurchasePrice	$ 7,100,000
Number of Units in Real Estate Property	us-gaap_NumberOfUnitsInRealEstateProperty	260
Business Acquistion, Purchase Price Allocation, Assumed Debt	sui_BusinessAcquistionPurchasePriceAllocationAssumedDebt	$ 4,100,000
Business Acquisition, Cost of Acquired Entity, Cash Paid	us-gaap_BusinessAcquisitionCostOfAcquiredEntityCashPaid	$ 3,000,000
Kentland [Member]
Number of Real Estate Properties	us-gaap_NumberOfRealEstateProperties	18
Kentland [Member] \| RV community [Member]
Number of Real Estate Properties	us-gaap_NumberOfRealEstateProperties	1
Kentland [Member] \| Manufactured home community [Member]
Number of Real Estate Properties	us-gaap_NumberOfRealEstateProperties	17
Orange City [Member]
Number of Units in Real Estate Property	us-gaap_NumberOfUnitsInRealEstateProperty	525
Florida Properties [Member]
Business Acquisitions Purchase Price Adjustments Cash	sui_BusinessAcquisitionsPurchasePriceAdjustmentsCash	$ (800,000)
Number of Units in Real Estate Property	us-gaap_NumberOfUnitsInRealEstateProperty	740
Number of Units in Real Estate Property	us-gaap_NumberOfUnitsInRealEstateProperty	1,114
Business Acquisitions Purchase Price Adjustments Other Assets	sui_BusinessAcquisitionsPurchasePriceAdjustmentsOtherAssets	$ (800,000)
Florida Properties [Member] \| RV community [Member]
Number of Real Estate Properties	us-gaap_NumberOfRealEstateProperties	3
Number of Real Estate Properties	us-gaap_NumberOfRealEstateProperties	3
Florida Properties [Member] \| Bushnell, FL [Member] \| RV community [Member]
Number of Real Estate Properties	us-gaap_NumberOfRealEstateProperties	1
Florida Properties [Member] \| Orange Lake, FL [Member] \| RV community [Member]
Number of Real Estate Properties	us-gaap_NumberOfRealEstateProperties	1
Florida Properties [Member] \| Moore Haven, FL [Member] \| RV community [Member]
Number of Real Estate Properties	us-gaap_NumberOfRealEstateProperties	1
Florida Properties [Member] \| Hudson, FL [Member] \| RV community [Member]
Number of Real Estate Properties	us-gaap_NumberOfRealEstateProperties	1
Florida Properties [Member] \| Naples, FL [Member] \| RV community [Member]
Number of Real Estate Properties	us-gaap_NumberOfRealEstateProperties	2