Shareholders' Equity, Noncontrolling Interests and Other Comprehensive Loss - Summary of Change in Noncontrolling Interest (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance				$ 628,322
Net (loss) income		$ (15,825)	$ 452	28,272	$ 1,149
Unrealized gain (loss) on valuation of swap agreements		17,050	(10,069)	52,784	23,487
Reclassification of realized interest on swap agreements		(4,211)	(5,272)	(9,261)	(10,540)
Noncontrolling interest contributions		723	5,868	99,852	17,109
Noncontrolling interest distributions		(24,776)	(4,355)	(47,556)	(10,031)
Employee Long-term Incentive Plan Unit Awards		2,540	2,624	6,358	7,135
Net (income) loss attributable to noncontrolling interests		15,451	3,259	(11,808)	7,379
Ending Balance		670,606		670,606
Noncontrolling Interests
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance		746,593	619,581	628,322	609,165
Distributions declared of Common and Preferred OP Units		(1,286)	(1,052)	(2,569)
Distributions declared per Common OP Unit					(2,100)
Net (loss) income		(15,451)	(3,259)	11,808	(7,379)
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership		(243)	(115)	(815)	(409)
Unrealized gain (loss) on valuation of swap agreements		2,970	(659)	11,598	3,384
Reclassification of realized interest on swap agreements		1,327	1,809	2,993	3,661
Acquisition of noncontrolling interest	[1]	(41,376)		(41,376)
Noncontrolling interest contributions		723	5,868	99,852	17,109
Noncontrolling interest distributions		(24,776)	(4,355)	(47,556)	(10,031)
Employee Long-term Incentive Plan Unit Awards		2,283	2,399	5,671	6,448
Reallocation of noncontrolling interests	[2]	(158)	(1,119)	2,678	(750)
Ending Balance		670,606	619,098	670,606	619,098
Noncontrolling Interests | Noncontrolling Interests in Partially-Owned Affiliates
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	[3]	645,238	524,651	534,202	519,734
Distributions declared of Common and Preferred OP Units	[3]	0	0	0
Distributions declared per Common OP Unit	[3]				0
Net (loss) income	[3]	(15,602)	(3,657)	10,534	(8,247)
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership	[3]	0	0	0	0
Unrealized gain (loss) on valuation of swap agreements	[3]	2,033	(253)	8,963	1,890
Reclassification of realized interest on swap agreements	[3]	1,298	1,756	2,919	3,555
Acquisition of noncontrolling interest	[1],[3]	(41,376)		(41,376)
Noncontrolling interest contributions	[3]	723	5,868	99,852	17,109
Noncontrolling interest distributions	[3]	(24,776)	(4,355)	(47,556)	(10,031)
Employee Long-term Incentive Plan Unit Awards	[3]	0	0	0	0
Reallocation of noncontrolling interests	[2],[3]	0	0	0	0
Ending Balance	[3]	567,538	524,010	567,538	524,010
Noncontrolling Interests | Operating Partnership, as General Partner or Managing Member
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	[4]	101,355	94,930	94,120	89,431
Distributions declared per Common OP Unit	[4]	(1,286)	(1,052)	(2,569)	(2,100)
Net (loss) income	[4]	151	398	1,274	868
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership	[4]	(243)	(115)	(815)	(409)
Unrealized gain (loss) on valuation of swap agreements	[4]	937	(406)	2,635	1,494
Reclassification of realized interest on swap agreements	[4]	29	53	74	106
Acquisition of noncontrolling interest	[1],[4]	0		0
Noncontrolling interest contributions	[4]	0	0	0	0
Noncontrolling interest distributions	[4]	0	0	0	0
Employee Long-term Incentive Plan Unit Awards	[4]	2,283	2,399	5,671	6,448
Reallocation of noncontrolling interests	[2],[4]	(158)	(1,119)	2,678	(750)
Ending Balance	[4]	$ 103,068	$ 95,088	$ 103,068	$ 95,088

[1] Represents the acquisition of the 11.67% noncontrolling interest in Fund II and Mervyns II acquired on June 27, 2022 (Note 1) for $18.5 million.

[2] Adjustment reflects the difference between the fair value of the consideration received or paid and the book value of the Common Shares, Common OP Units, Preferred OP Units, and LTIP Units involving changes in ownership.

[3] Noncontrolling interests in partially-owned affiliates comprise third-party interests in Funds II, III, IV and V, and Mervyns II, and six other subsidiaries.

[4] Noncontrolling interests in the Operating Partnership are comprised of (i) the limited partners’ 3,062,108 and 3,101,958 Common OP Units at June 30, 2022 and 2021, respectively; (ii) 188 Series A Preferred OP Units at each of June 30, 2022 and 2021; (iii) 126,593 Series C Preferred OP Units at each of June 30, 2022 and 2021; and (iv) 3,732,125 and 3,434,894 LTIP units at June 30, 2022 and 2021, respectively, as discussed in Share Incentive Plan (Note 13). Distributions declared for Preferred OP Units are reflected in net income (loss) in the table above.