CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands		Total		Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive (Loss) Income	Treasury Stock	Total Stockholders' Equity	Noncontrolling Interest	Cumulative Effect, Period of Adoption, Adjustment	Cumulative Effect, Period of Adoption, Adjustment Accumulated Deficit	Cumulative Effect, Period of Adoption, Adjustment Total Stockholders' Equity
Balance at the beginning of the period (in shares) at Dec. 31, 2018				43,511,473
Balance at the beginning of the period at Dec. 31, 2018		$ 3,238,126		$ 436	$ 3,322,433	$ (120,341)	$ (8,126)	$ (62,190)	$ 3,132,212	$ 105,914
Balance at the beginning of the period (in shares) at Dec. 31, 2018								(519,849)
Increase (Decrease) in Stockholders' Equity
Net (loss) income		45,253				45,298			45,298	(45)
Interest rate swaps		(19,052)					(19,052)		(19,052)
Terminated swap amortization		(1,291)					(1,291)		(1,291)
Capitalized swap interest, net of tax		(73)	[1]				(73)		(73)
Deconsolidation of Associations of Unit Owners		(2,715)								(2,715)
Contributions to real estate and other affiliates		84,889								84,889
Stock plan activity (in shares)				(150,221)
Stock plan activity		6,630		$ 1	6,629				6,630
Balance at the end of the period (in shares) at Jun. 30, 2019				43,661,694
Balance at the end of the period at Jun. 30, 2019		3,351,767		$ 437	3,329,062	(75,043)	(28,542)	$ (62,190)	3,163,724	188,043
Balance at the end of the period (in shares) at Jun. 30, 2019								(519,849)
Balance at the beginning of the period (in shares) at Mar. 31, 2019				43,659,708
Balance at the beginning of the period at Mar. 31, 2019		3,307,473		$ 437	3,325,499	(88,520)	(14,759)	$ (62,190)	3,160,467	147,006
Balance at the beginning of the period (in shares) at Mar. 31, 2019								(519,849)
Increase (Decrease) in Stockholders' Equity
Net (loss) income		13,328				13,477			13,477	(149)
Interest rate swaps		(13,108)					(13,108)		(13,108)
Terminated swap amortization		(653)					(653)		(653)
Capitalized swap interest, net of tax		(22)	[1]				(22)		(22)
Deconsolidation of Associations of Unit Owners		(2,715)								(2,715)
Contributions to real estate and other affiliates		43,901								43,901
Stock plan activity (in shares)				(1,986)
Stock plan activity		3,563		$ 0	3,563				3,563
Balance at the end of the period (in shares) at Jun. 30, 2019				43,661,694
Balance at the end of the period at Jun. 30, 2019		3,351,767		$ 437	3,329,062	(75,043)	(28,542)	$ (62,190)	3,163,724	188,043
Balance at the end of the period (in shares) at Jun. 30, 2019								(519,849)
Increase (Decrease) in Stockholders' Equity
Adoption of ASU 2016-13		3,148,133									$ (18)	$ (18)	$ (18)
Balance at the beginning of the period (in shares) at Dec. 31, 2019				43,635,893
Balance at the beginning of the period at Dec. 31, 2019		3,332,988		$ 437	3,343,983	(46,385)	(29,372)	$ (120,530)	3,148,133	184,855
Balance at the beginning of the period (in shares) at Dec. 31, 2019								(1,050,260)
Increase (Decrease) in Stockholders' Equity
Net (loss) income		(159,185)				(159,218)			(159,218)	33
Interest rate swaps		(30,481)					(30,481)		(30,481)
Terminated swap amortization		(1,258)					(1,258)		(1,258)
Capitalized swap interest, net of tax	[1]	0
Common stock offering costs (in shares)				12,270,900
Common stock offering costs		593,613		$ 123	593,490				593,613
Stock plan activity (in shares)				(74,766)
Stock plan activity		4,044		$ 1	4,043				4,044
Balance at the end of the period (in shares) at Jun. 30, 2020				55,981,559
Balance at the end of the period at Jun. 30, 2020		3,739,703		$ 561	3,941,516	(205,621)	(61,111)	$ (120,530)	3,554,815	184,888
Balance at the end of the period (in shares) at Jun. 30, 2020								(1,050,260)
Balance at the beginning of the period (in shares) at Mar. 31, 2020				55,989,263
Balance at the beginning of the period at Mar. 31, 2020		3,772,598		$ 561	3,939,470	(171,537)	(60,273)	$ (120,530)	3,587,691	184,907
Balance at the beginning of the period (in shares) at Mar. 31, 2020								(1,050,260)
Increase (Decrease) in Stockholders' Equity
Net (loss) income		(34,103)				(34,084)			(34,084)	(19)
Interest rate swaps		(234)					(234)		(234)
Terminated swap amortization		(604)					(604)		(604)
Capitalized swap interest, net of tax	[1]	0
Common stock offering costs		(85)			(85)				(85)
Stock plan activity (in shares)				(7,704)
Stock plan activity		2,131		$ 0	2,131				2,131
Balance at the end of the period (in shares) at Jun. 30, 2020				55,981,559
Balance at the end of the period at Jun. 30, 2020		3,739,703		$ 561	$ 3,941,516	$ (205,621)	$ (61,111)	$ (120,530)	$ 3,554,815	$ 184,888
Balance at the end of the period (in shares) at Jun. 30, 2020								(1,050,260)
Increase (Decrease) in Stockholders' Equity
Adoption of ASU 2016-13		$ 3,554,815

[1] The deferred tax impact was zero for the three and six months ended June 30, 2020 and not meaningful for the three and six months ended June 30, 2019.