Investments in and Advances to Joint Ventures - Condensed Combined Statements of Operations of Unconsolidated Joint Venture Investments (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Expenses from operations:
Operating expenses	$ 211,249	$ 187,820
Impairment charges	21,973	0
Depreciation and amortization	90,884	96,902
Interest expense	51,827	57,897
Other (income) expense, net	4	(1,773)
(Loss) income from continuing operations	(92,155)	33,492
Gain on disposition of real estate, net	38,127	12,381
Company's share of equity in net (loss) income of joint ventures	(5,293)	11,274
Basis differential adjustments	3,628	3,147
Equity in net (loss) income of joint ventures	(1,665)	14,421
Unconsolidated Joint Ventures [Member]
Condensed Combined Statements of Operations
Revenues from operations	127,048	127,910
Expenses from operations:
Operating expenses	36,668	37,656
Impairment charges	52,657	0
Depreciation and amortization	45,096	49,035
Interest expense	30,130	33,322
Preferred share expense	8,128	8,264
Other (income) expense, net	6,573	5,811
Total expenses	179,252	134,088
(Loss) income from continuing operations	(52,204)	(6,178)
Gain on disposition of real estate, net	(173)	53,483
Net (loss) income attributable to unconsolidated joint ventures	$ (52,377)	$ 47,305