CONSLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Series D Preferred Shares	Common Shares	Additional Paid in Capital	Cumulative Net Income	Cumulative Other Comprehensive Loss	Cumulative Common Distributions	Cumulative Preferred Distributions	Noncontrolling Interest
Beginning balance (in shares) at Dec. 31, 2018		4,915,196	121,572,155
Beginning balance at Dec. 31, 2018	$ 3,183,998	$ 119,263	$ 1,216	$ 4,305,974	$ 2,870,974	$ (342)	$ (3,420,548)	$ (693,736)	$ 1,197
Comprehensive income:
Net (loss) income	492,866				492,680				186
Unrealized gain on marketable securities	342					342
Total comprehensive (loss) income	493,208
Surrender of shares for tax withholding (in shares)			(168,327)
Surrender of shares for tax withholding	(5,487)		$ (2)	(5,485)
Share-based compensation (in shares)			520,371
Share-based compensation	14,426		$ 5	13,095					1,326
Distributions									(1,167)
Distributions	(440,273)						(431,118)	(7,988)
Adjustment for noncontrolling interest				247					(247)
Ending balance (in shares) at Dec. 31, 2019		4,915,196	121,924,199
Ending balance at Dec. 31, 2019	3,245,872	$ 119,263	$ 1,219	4,313,831	3,363,654	0	(3,851,666)	(701,724)	1,295
Comprehensive income:
Net (loss) income	452,093				451,294				799
Unrealized gain on marketable securities	0
Total comprehensive (loss) income	452,093
Repurchase of shares (in shares)			(711,000)
Repurchase of shares	(20,869)		$ (7)	(20,862)
Surrender of shares for tax withholding (in shares)			(184,068)
Surrender of shares for tax withholding	(6,028)		$ (2)	(6,026)
Share-based compensation (in shares)			493,424
Share-based compensation	13,215		$ 5	11,679					1,531
Contributions	1								1
Distributions									(1,099)
Distributions	(441,089)						(432,002)	(7,988)
Redemption of noncontrolling interest	(31)								(31)
Adjustment for noncontrolling interest				(3,990)					3,990
Ending balance (in shares) at Dec. 31, 2020		4,915,196	121,522,555
Ending balance at Dec. 31, 2020	3,243,164	$ 119,263	$ 1,215	4,294,632	3,814,948	0	(4,283,668)	(709,712)	6,486
Comprehensive income:
Net (loss) income	(16,429)				(16,396)				(33)
Unrealized gain on marketable securities	0
Total comprehensive (loss) income	(16,429)
Repurchase of shares (in shares)			(6,735,810)
Repurchase of shares	(174,407)		$ (67)	(174,340)
Surrender of shares for tax withholding (in shares)			(245,560)
Surrender of shares for tax withholding	(7,081)		$ (2)	(7,079)
Share-based compensation (in shares)			664,633
Share-based compensation	15,442		$ 6	14,555					881
Contributions									96
Distributions	(5,419)						2,473	(7,988)
Adjustment for noncontrolling interest				888					(888)
Ending balance (in shares) at Dec. 31, 2021		4,915,196	115,205,818
Ending balance at Dec. 31, 2021	$ 3,055,270	$ 119,263	$ 1,152	$ 4,128,656	$ 3,798,552	$ 0	$ (4,281,195)	$ (717,700)	$ 6,542