Shareholders' Equity, Noncontrolling Interests and Other Comprehensive Loss - Summary of Change in Noncontrolling Interest (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2022		Mar. 31, 2021
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance		$ 628,322
Net income		44,097		$ 697
Unrealized gain on valuation of swap agreements		35,734		33,556
Reclassification of realized interest on swap agreements		(5,049)		(5,268)
Noncontrolling interest contributions		99,129		11,241
Noncontrolling interest distributions		(22,780)		(5,676)
Employee Long-term Incentive Plan Unit Awards		3,820		4,511
Noncontrolling interest gain		(27,259)		(4,120)
Ending Balance		746,593
Noncontrolling Interests
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance		628,322		609,165
Distributions declared of Common and Preferred OP Units		(1,283)
Distributions declared per Preferred OP Unit				(1,048)
Net income		27,259		(4,120)
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership		(572)		(294)
Unrealized gain on valuation of swap agreements		8,627		4,043
Reclassification of realized interest on swap agreements		1,666		1,852
Noncontrolling interest contributions		99,129		11,241
Noncontrolling interest distributions		(22,780)		(5,676)
Employee Long-term Incentive Plan Unit Awards		3,389		4,049
Reallocation of noncontrolling interests		2,836		369
Ending Balance		746,593		619,581
Noncontrolling Interests | Noncontrolling Interests in Partially-Owned Affiliates
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	[1]	534,202		519,734
Distributions declared of Common and Preferred OP Units	[1]	0
Distributions declared per Preferred OP Unit
Net income	[1]	26,138		(4,590)
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership		0	[1]
Unrealized gain on valuation of swap agreements	[1]	6,929		2,143
Reclassification of realized interest on swap agreements	[1]	(1,620)		1,799
Noncontrolling interest contributions	[1]	99,129		11,241
Noncontrolling interest distributions	[1]	(22,780)		(5,676)
Employee Long-term Incentive Plan Unit Awards
Reallocation of noncontrolling interests
Ending Balance	[1]	645,238		524,651
Noncontrolling Interests | Operating Partnership, as General Partner or Managing Member
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	[2]	94,120		89,431
Distributions declared per Common OP Unit	[2]	1,283
Distributions declared per Preferred OP Unit	[2]			(1,048)
Net income	[2]	1,121		470
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership	[2]	(572)		(294)
Unrealized gain on valuation of swap agreements	[2]	1,698		1,900
Reclassification of realized interest on swap agreements	[2]	(46)		53
Noncontrolling interest contributions
Noncontrolling interest distributions
Employee Long-term Incentive Plan Unit Awards	[2]	3,389		4,049
Reallocation of noncontrolling interests	[2]	2,836	[3]	369
Ending Balance	[2]	$ 101,355		$ 94,930

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

[2] Noncontrolling interests in the Operating Partnership are comprised of (i) the limited partners’ 3,076,849 and 3,076,849 Common OP Units at March 31, 2022 and 2021, respectively; (ii) 188 Series A Preferred OP Units at each of March 31, 2022 and 2021; (iii) 126,593 Series C Preferred OP Units at each of March 31, 2022 and 2021; and (iv) 3,705,353 and 3,409,232 LTIP units at March 31, 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.

[3] 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.