CONSOLIDATED STATEMENTS OF EQUITY (DEFICIT) - USD ($) shares in Thousands	Total	Preferred Stock, Series D	Preferred Stock, Series F	Preferred Stock, Series G	Preferred Stock, Series H	Preferred Stock, Series I	Preferred Stock Preferred Stock, Series D	Preferred Stock Preferred Stock, Series F	Preferred Stock Preferred Stock, Series G	Preferred Stock Preferred Stock, Series H	Preferred Stock Preferred Stock, Series I	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Deficit Preferred Stock, Series D	Accumulated Deficit Preferred Stock, Series F	Accumulated Deficit Preferred Stock, Series G	Accumulated Deficit Preferred Stock, Series H	Accumulated Deficit Preferred Stock, Series I	Noncontrolling Interests In Consolidated Entities	Redeemable Noncontrolling Interests in Operating Partnership
Beginning balance, shares (in shares) at Dec. 31, 2019							2,389	4,800	6,200	3,800	5,400	1,021
Beginning balance, value at Dec. 31, 2019	$ 269,266,000						$ 24,000	$ 48,000	$ 62,000	$ 38,000	$ 54,000	$ 10,000	$ 1,826,564,000	$ (1,558,038,000)						$ 504,000	$ 69,870,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Purchases of common stock (in shares)												(3)
Purchases of common stock	(397,000)												(397,000)
Equity-based compensation	2,887,000												2,887,000								2,860,000
Forfeitures of restricted shares (in shares)												(5)
Issuance of restricted shares/units (in shares)												15
Issuance of restricted shares/units	17,000												17,000								107,000
Dividend claw back upon cancellation/forfeiture	605,000													605,000							1,401,000
Dividends declared - preferred shares		$ (1,262,000)	$ (2,212,000)	$ (2,858,000)	$ (1,781,000)	$ (2,531,000)									$ (1,262,000)	$ (2,212,000)	$ (2,858,000)	$ (1,781,000)	$ (2,531,000)
Conversion of operating partnership units (in shares)												20
Conversion of operating partnership units	959,000												959,000								(959,000)
Redemption value adjustment	(12,074,000)													(12,074,000)							12,074,000
Net income (loss)	(288,985,000)													(288,817,000)						(168,000)	(55,021,000)
Ending balance, shares (in shares) at Jun. 30, 2020							2,389	4,800	6,200	3,800	5,400	1,048
Ending balance, value at Jun. 30, 2020	(38,366,000)						$ 24,000	$ 48,000	$ 62,000	$ 38,000	$ 54,000	$ 10,000	1,830,030,000	(1,868,968,000)						336,000	30,332,000
Beginning balance, shares (in shares) at Dec. 31, 2019							2,389	4,800	6,200	3,800	5,400	1,021
Beginning balance, value at Dec. 31, 2019	269,266,000						$ 24,000	$ 48,000	$ 62,000	$ 38,000	$ 54,000	$ 10,000	1,826,564,000	(1,558,038,000)						504,000	69,870,000
Ending balance, shares (in shares) at Dec. 31, 2020							1,791	2,891	4,423	2,669	3,391	6,436
Ending balance, value at Dec. 31, 2020	(283,455,000)						$ 18,000	$ 29,000	$ 44,000	$ 27,000	$ 34,000	$ 64,000	1,809,455,000	(2,093,292,000)						166,000	22,951,000
Beginning balance, shares (in shares) at Mar. 31, 2020							2,389	4,800	6,200	3,800	5,400	1,051
Beginning balance, value at Mar. 31, 2020	197,670,000						$ 24,000	$ 48,000	$ 62,000	$ 38,000	$ 54,000	$ 10,000	1,830,437,000	(1,633,459,000)						456,000	35,229,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Purchases of common stock	(39,000)												(39,000)
Equity-based compensation	(385,000)												(385,000)								1,227,000
Forfeitures of restricted shares (in shares)												(5)
Forfeitures of restricted shares	0																				106,000
Issuance of restricted shares/units (in shares)												2
Issuance of restricted shares/units	17,000												17,000
Dividend claw back upon cancellation/forfeiture	227,000													227,000
Redemption value adjustment	(31,120,000)													(31,120,000)							31,120,000
Net income (loss)	(204,736,000)													(204,616,000)						(120,000)	(37,350,000)
Ending balance, shares (in shares) at Jun. 30, 2020							2,389	4,800	6,200	3,800	5,400	1,048
Ending balance, value at Jun. 30, 2020	(38,366,000)						$ 24,000	$ 48,000	$ 62,000	$ 38,000	$ 54,000	$ 10,000	1,830,030,000	(1,868,968,000)						336,000	30,332,000
Beginning balance, shares (in shares) at Dec. 31, 2020							1,791	2,891	4,423	2,669	3,391	6,436
Beginning balance, value at Dec. 31, 2020	(283,455,000)						$ 18,000	$ 29,000	$ 44,000	$ 27,000	$ 34,000	$ 64,000	1,809,455,000	(2,093,292,000)						166,000	22,951,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Purchases of common stock (in shares)												(1)
Purchases of common stock	(46,000)												(46,000)
Equity-based compensation	3,538,000												3,538,000								1,511,000
Forfeitures of restricted shares (in shares)												(2)
Issuance of restricted shares/units (in shares)												251
Issuance of restricted shares/units	0											$ 3,000	(3,000)
Issuance of common stock (in shares)												9,712
Issuance of common stock	371,309,000											$ 97,000	371,212,000
Dividend claw back upon cancellation/forfeiture	178,000													178,000							454,000
Dividends declared - preferred shares	0
Conversion of operating partnership units (in shares)												1
Conversion of operating partnership units	41,000												41,000								(41,000)
Redemption value adjustment	(7,258,000)													(7,258,000)							7,258,000
Extinguishment of preferred stock (in shares)							(475)	(1,420)	(2,513)	(1,211)	(1,999)	5,924
Extinguishment of preferred stock							$ (5,000)	$ (14,000)	$ (25,000)	$ (13,000)	$ (20,000)	$ 59,000	(2,730,000)	2,748,000
Net income (loss)	(167,424,000)													(167,330,000)						(94,000)	(3,227,000)
Ending balance, shares (in shares) at Jun. 30, 2021							1,316	1,471	1,910	1,458	1,392	22,321
Ending balance, value at Jun. 30, 2021	(83,117,000)						$ 13,000	$ 15,000	$ 19,000	$ 14,000	$ 14,000	$ 223,000	2,181,467,000	(2,264,954,000)						72,000	28,906,000
Beginning balance, shares (in shares) at Mar. 31, 2021							1,679	2,038	3,172	2,002	2,000	11,014
Beginning balance, value at Mar. 31, 2021	(341,926,000)						$ 17,000	$ 20,000	$ 32,000	$ 20,000	$ 20,000	$ 110,000	1,846,171,000	(2,188,401,000)						85,000	24,683,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Equity-based compensation	2,259,000												2,259,000								846,000
Forfeitures of restricted shares (in shares)												(2)
Issuance of restricted shares/units (in shares)												238
Issuance of restricted shares/units	0											$ 2,000	(2,000)
Issuance of common stock (in shares)												8,089
Issuance of common stock	325,188,000											$ 81,000	325,107,000
Dividends declared - preferred shares	0
Conversion of operating partnership units (in shares)												1
Conversion of operating partnership units	41,000												41,000								(41,000)
Redemption value adjustment	(4,374,000)													(4,374,000)							4,374,000
Extinguishment of preferred stock (in shares)							(363)	(567)	(1,262)	(544)	(608)	2,981
Extinguishment of preferred stock	0						$ (4,000)	$ (5,000)	$ (13,000)	$ (6,000)	$ (6,000)	$ 30,000	7,891,000	(7,887,000)
Net income (loss)	(64,305,000)													(64,292,000)						(13,000)	(956,000)
Ending balance, shares (in shares) at Jun. 30, 2021							1,316	1,471	1,910	1,458	1,392	22,321
Ending balance, value at Jun. 30, 2021	$ (83,117,000)						$ 13,000	$ 15,000	$ 19,000	$ 14,000	$ 14,000	$ 223,000	$ 2,181,467,000	$ (2,264,954,000)						$ 72,000	$ 28,906,000