Changes In Accumulated Depreciation (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Real Estate and Accumulated Depreciation [Line Items]
Beginning Balance	$ 948,581	$ 807,329	$ 700,665
Real Estate Depreciation Expense and Rental Homes	108,229	102,083	83,013
Amortization of Intangible Assets	1,940	39,467	23,126
Dispositions and other	210	298	(525)
Ending Balance	$ 1,058,540	$ 948,581	$ 807,329