CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (UNAUDITED) - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid in Capital [Member]	Earnings Less than Distributions [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interest [Member] Consolidated Joint Ventures [Member]	Noncontrolling Interest [Member] Consolidated Real Estate Fund [Member]	Noncontrolling Interest [Member] Operating Partnership [Member]
Beginning balance at Dec. 31, 2020	$ 4,515,734	$ 2,188	$ 4,120,173	$ (456,393)	$ (12,791)	$ 437,161	$ 79,017	$ 346,379
Common stock, shares outstanding at Dec. 31, 2020		218,817,000
Net income (loss)	1,884			(3,578)		5,728	85	(351)
Common shares issued under Omnibus share plan, net of shares withheld for taxes	(200)	$ 1		(201)
Common shares issued under Omnibus share plan, net of shares withheld for taxes		133,000
Dividends and distributions	(16,889)			(15,327)				(1,562)
Contributions from noncontrolling interests	121					121
Distributions to noncontrolling interests	(4,625)					(4,625)
Pro rata share of other comprehensive income of unconsolidated joint ventures	4,384				3,982		12	390
Amortization of equity awards	5,526		307					5,219
Reallocation of noncontrolling interest			(9,336)					9,336
Other				(552)		552
Ending balance at Mar. 31, 2021	4,505,935	$ 2,189	4,111,144	(476,051)	(8,809)	438,937	79,114	359,411
Common stock, shares outstanding at Mar. 31, 2021		218,950,000
Beginning balance at Dec. 31, 2021	$ 4,455,032	$ 2,190	4,122,680	(538,845)	2,138	428,833	81,925	356,111
Common stock, shares outstanding at Dec. 31, 2021	218,991,795	218,992,000
Net income (loss)	$ 6,122			3,371		3,425	(1,016)	342
Common shares issued under Omnibus share plan, net of shares withheld for taxes	(280)			(280)
Common shares issued under Omnibus share plan, net of shares withheld for taxes		85,000
Dividends and distributions	(18,777)			(16,978)				(1,799)
Distributions to noncontrolling interests	(14,681)					(14,681)
Change in value of interest rate swaps and interest rate caps	18,545				16,837			1,708
Pro rata share of other comprehensive income of unconsolidated joint ventures	10,453				9,491			962
Amortization of equity awards	6,609		322					6,287
Reallocation of noncontrolling interest			(2,925)					2,925
Ending balance at Mar. 31, 2022	$ 4,463,023	$ 2,190	$ 4,120,077	$ (552,732)	$ 28,466	$ 417,577	$ 80,909	$ 366,536
Common stock, shares outstanding at Mar. 31, 2022	219,077,024	219,077,000