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, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Schedule Of Equity Method Investments [Line Items]
Revenues from operations	$ 105,554	$ 122,525	$ 342,435	$ 382,204
Expenses from operations:
Operating expenses	87,129	92,245	265,877	277,702
Impairment charges	0	2,750	0	3,370
Depreciation and amortization	41,148	40,732	125,014	123,400
Interest expense	18,089	21,160	58,487	63,973
Other expense, net	186	322	18,207	254
Net (loss) income	7,403	23,901	37,628	77,533
Company's share of equity in net income of joint ventures	134	2,404	571	4,851
Basis differential adjustments	116	208	337	595
Equity in net income of joint ventures	250	2,612	908	5,446
Unconsolidated Joint Ventures [Member]
Schedule Of Equity Method Investments [Line Items]
Revenues from operations	60,019	105,223	198,906	319,906
Expenses from operations:
Operating expenses	18,613	28,798	61,661	89,341
Impairment charges	0	0	33,240	12,267
Depreciation and amortization	23,901	36,867	77,580	113,340
Interest expense	14,700	22,530	47,555	73,472
Preferred share expense	4,626	5,544	13,710	16,487
Other expense, net	3,246	5,017	10,844	16,358
Total expenses	65,086	98,756	244,590	321,265
(Loss) income before gain (loss) on disposition of real estate	(5,067)	6,467	(45,684)	(1,359)
Gain (loss) on disposition of real estate, net	319	(440)	9,229	15,205
Net (loss) income	$ (4,748)	$ 6,027	$ (36,455)	$ 13,846