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Amount of the fee for available but unused credit capacity under the credit facility.

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Description of the interest rate for the amounts borrowed under the credit facility, including the terms and the method for determining the interest rate (for example, fixed or variable, LIBOR plus a percentage, increasing rate, timing of interest rate resets, remarketing provisions).

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The fair value of notes issued in noncash investing and financing activities.

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The carrying amount, as of the date of the latest financial statement presented, of real estate owned but transferred to serve as collateral for the payment of the related debt obligation, primarily a secured borrowing or repurchase agreement, and for which the transferee is not permitted to sell or re-pledge them to an unrelated party.

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The cash outflow to repay long-term debt that is wholly or partially secured by collateral. Excludes repayments of tax exempt secured debt.

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Long-Term Borrowings - Additional Information (Detail) (USD $)	6 Months Ended		12 Months Ended
	Jun. 30, 2011 MortgageLoan Property Year Location	Jun. 30, 2010	Dec. 31, 2010 Property Year	May 19, 2011
Debt Instrument [Line Items]
Mortgage notes payable	$ 1,357,458,000		$ 1,412,919,000
Mortgage notes payable, weighted average interest rate	6.10%
Debt, minimum interest rate	5.00%
Debt, maximum interest rate	8.50%
Debt instrument, maturity date range, start	2011
Debt instrument, maturity date range, end	2020
Number of properties encumbered	121		129
Carrying values of properties encumbered	1,520,000,000		1,508,000,000
Payment of maturing mortgages	45,500,000
Number of maturing mortgages	8
Lines of credit, borrowing capacity			100,000,000	380,000,000
Lines of credit, maturity date	September 18, 2015		June 29, 2011
Line of credit facility, interest rate based on a margin over LIBOR	The LOC accrues interest at an annual rate equal to the applicable LIBOR rate plus 1.65% to 2.50%
Lines of credit, commitment and arrangement fees	3,600,000
Lines of credit, borrowing capacity	380,000,000
Dealer financing	$ (830,000)	$ (2,268,000)
Mortgages
Debt Instrument [Line Items]
Mortgage notes payable, weighted average interest rate	7.00%
Debt secured by individual manufactured homes
Debt Instrument [Line Items]
Mortgage notes payable, stated interest rate	6.00%
Debt, maturity date	Jul. 16, 2016
Minimum
Debt Instrument [Line Items]
Line of credit, facility fee	0.30%
Maximum
Debt Instrument [Line Items]
Line of credit, facility fee	0.40%