Investments in and Advances to Joint Ventures - Condensed Combined Statements of Operations of Unconsolidated Joint Venture Investments (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Condensed Combined Statements of Operations
Revenues from operations	$ 460,333	$ 507,988	$ 707,255
Expenses from operations:
Operating expenses	367,152	366,504	581,874
Impairment charges	5,200	3,370	69,324
Depreciation and amortization	170,669	165,087	242,102
Interest expense	77,604	84,721	141,305
Other expense, net	18,400	(357)	110,895
Net (loss) income attributable to unconsolidated joint ventures	36,590	101,825	116,105
Equity in net income of joint ventures	1,516	11,519	9,365
Unconsolidated Joint Ventures [Member]
Condensed Combined Statements of Operations
Revenues from operations	252,946	428,281	427,467
Expenses from operations:
Operating expenses	77,040	118,412	125,353
Impairment charges	33,240	13,807	177,522
Depreciation and amortization	99,779	149,749	145,849
Interest expense	60,010	93,887	96,312
Preferred share expense	15,708	21,832	24,875
Other expense, net	13,796	20,563	24,891
Total expenses	299,573	418,250	594,802
(Loss) income before gain on disposition of real estate	(46,627)	10,031	(167,335)
Gain on disposition of real estate, net	9,257	67,011	93,753
Net (loss) income attributable to unconsolidated joint ventures	(37,370)	77,042	(73,582)
Company's share of equity in net income (loss) of joint ventures	1,109	10,743	(2,419)
Basis differential adjustments(B)	407	776	11,784
Equity in net income of joint ventures	$ 1,516	$ 11,519	$ 9,365