Real Estate Activity - Carrying Amount of Assets and Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Land	$ 312,602	$ 327,270
Building and improvements	2,290,362	2,408,906
Furniture, fixtures and equipment	292,392	291,027
Less: accumulated depreciation	(895,723)	(913,018)
Assets held for sale, net of accumulated depreciation	107,229
Assets Held-for-sale [Member]
Property, Plant and Equipment [Line Items]
Land	22,093
Building and improvements	117,915
Furniture, fixtures and equipment	8,207
Less: accumulated depreciation	(40,986)
Assets held for sale, net of accumulated depreciation	107,229
Secured indebtedness	$ 82,922