Consolidated Statements of Equity - USD ($) shares in Thousands, $ in Thousands	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interests in Consolidated Subsidiaries	Total
Balance at beginning of period at Dec. 31, 2017	$ 1,180	$ 3,063,625	$ (95,809)	$ 1,612	$ 4,206	$ 2,974,814
Balance at beginning of period (in shares) at Dec. 31, 2017	117,955
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss) attributable to common shareholders and noncontrolling interests			39,924		(21)	39,903
Conversion of common limited partnership units to common shares	$ 30	109,092				109,122
Conversion of common limited partnership units to common shares (in shares)	2,962
Common shares issued pursuant to Employee Share Purchase Plan ("ESPP")		741				741
Common shares issued pursuant to Employee Share Purchase Plan ("ESPP") ( in shares)	20
Dividends declared on common shares			(120,133)			(120,133)
Distributions to noncontrolling interests, net					(97)	(97)
Redeemable noncontrolling interests redemption value adjustment and other comprehensive (loss) income allocation		(16,172)		(1,384)		(17,556)
Acquisition of consolidated real estate venture		(1,666)			(3,884)	(5,550)
Other comprehensive loss				6,472		6,472
Other		(364)				(364)
Balance at end of period (in shares) at Dec. 31, 2018	120,937
Balance at end of period at Dec. 31, 2018	$ 1,210	3,155,256	(176,018)	6,700	204	2,987,352
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss) attributable to common shareholders and noncontrolling interests			65,571			65,571
Common shares issued	$ 115	472,665				472,780
Common shares issued (in shares)	11,500
Conversion of common limited partnership units to common shares	$ 17	57,301				57,318
Conversion of common limited partnership units to common shares (in shares)	1,664
Common shares issued pursuant to Employee Share Purchase Plan ("ESPP")		1,803				1,803
Common shares issued pursuant to Employee Share Purchase Plan ("ESPP") ( in shares)	47
Dividends declared on common shares			(120,717)			(120,717)
Distributions to noncontrolling interests, net					(3)	(3)
Redeemable noncontrolling interests redemption value adjustment and other comprehensive (loss) income allocation		(53,983)		2,584		(51,399)
Other comprehensive loss				(26,028)		$ (26,028)
Balance at end of period (in shares) at Dec. 31, 2019	134,148					134,148
Balance at end of period at Dec. 31, 2019	$ 1,342	3,633,042	(231,164)	(16,744)	201	$ 3,386,677
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss) attributable to common shareholders and noncontrolling interests			(62,303)			(62,303)
Conversion of common limited partnership units to common shares	$ 13	47,504				47,517
Conversion of common limited partnership units to common shares (in shares)	1,338
Common shares repurchased	$ (37)	(104,737)				(104,774)
Common shares repurchased (in shares)	(3,776)
Common shares issued pursuant to Employee Share Purchase Plan ("ESPP")	$ 1	2,241				2,242
Common shares issued pursuant to Employee Share Purchase Plan ("ESPP") ( in shares)	68
Dividends declared on common shares			(119,477)			(119,477)
Distributions to noncontrolling interests, net					(34)	(34)
Redeemable noncontrolling interests redemption value adjustment and other comprehensive (loss) income allocation		79,593		2,990		82,583
Other comprehensive loss				(26,225)		$ (26,225)
Balance at end of period (in shares) at Dec. 31, 2020	131,778					131,778
Balance at end of period at Dec. 31, 2020	$ 1,319	$ 3,657,643	$ (412,944)	$ (39,979)	$ 167	$ 3,206,206