Investments in and Advances to Joint Ventures - Condensed Combined Statements of Operations of Unconsolidated Joint Venture Investments (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Expenses from operations:
Operating expenses	$ 92,245	$ 124,191	$ 277,702	$ 480,264
Impairment charges	2,750	19,890	3,370	68,394
Depreciation and amortization	40,732	49,629	123,400	196,515
Interest expense	21,160	26,962	63,973	115,915
Other expense, net	322	1,454	254	99,316
(Loss) gain on disposition of real estate, net	14,497	124	31,087	39,643
Company's share of equity in net income (loss) of joint ventures	2,404	(7,669)	4,851	4,310
Basis differential adjustments	208	4,749	595	5,377
Equity in net income (loss) of joint ventures	2,612	(2,920)	5,446	9,687
Unconsolidated Joint Ventures [Member]
Condensed Combined Statements of Operations
Revenues from operations	105,223	103,217	319,906	325,501
Expenses from operations:
Operating expenses	28,798	29,577	89,341	96,272
Impairment charges	0	87,880	12,267	104,790
Depreciation and amortization	36,867	34,332	113,340	111,308
Interest expense	22,530	23,126	73,472	72,315
Preferred share expense	5,544	6,249	16,487	19,074
Other expense, net	5,017	5,460	16,358	19,497
Total expenses	98,756	186,624	321,265	423,256
Income (loss) before gain on disposition of real estate	6,467	(83,407)	(1,359)	(97,755)
(Loss) gain on disposition of real estate, net	(440)	32,548	15,205	82,924
Net income (loss) attributable to unconsolidated joint ventures	$ 6,027	$ (50,859)	$ 13,846	$ (14,831)