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, 2019	Mar. 31, 2018
Expenses from operations:
Operating expenses	$ 93,924	$ 183,513
Impairment charges	620	30,444
Depreciation and amortization	42,608	74,424
Interest expense	21,726	44,040
Other (income) expense, net	(153)	61,607
Gain on disposition of real estate, net	16,377	10,011
Company's share of equity in net income of joint ventures	845	8,473
Basis differential adjustments	198	313
Equity in net income of joint ventures	1,043	8,786
Unconsolidated Joint Ventures [Member]
Condensed Combined Statements of Operations
Revenues from operations	109,103	114,525
Expenses from operations:
Operating expenses	30,061	34,381
Impairment charges	12,267	16,910
Depreciation and amortization	39,504	39,677
Interest expense	25,656	24,243
Preferred share expense	5,459	6,508
Other (income) expense, net	5,456	7,421
Total expenses	118,403	129,140
Loss before gain on disposition of real estate	(9,300)	(14,615)
Gain on disposition of real estate, net	15,966	38,020
Net income attributable to unconsolidated joint ventures	$ 6,666	$ 23,405