CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($)	Total	Series D Preferred Stock	Series B Preferred Stock	Impact of adoption of new accounting standard	Preferred Stock Series D Preferred Stock	Preferred Stock Series B Preferred Stock	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Deficit Series D Preferred Stock	Accumulated Deficit Series B Preferred Stock	Accumulated Deficit Impact of adoption of new accounting standard	Noncontrolling Interest in Consolidated Entities	Redeemable Noncontrolling Interests in Operating Partnership
Beginning balance (in shares) at Dec. 31, 2018					1,600,000		32,512,000
Beginning balance at Dec. 31, 2018	$ 392,085,000			$ (103,000)	$ 16,000		$ 325,000	$ 512,545,000	$ (115,410,000)			$ (103,000)	$ (5,391,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Purchase of common stock (in shares)							(30,000)
Purchase of common stock	(384,000)							(384,000)
Equity-based compensation	3,959,000							3,959,000						$ 1,949,000
Preferred stock offering costs	(13,000)							(13,000)
Issuance of restricted shares/units (in shares)							260,000
Issuance of restricted shares/units	0						$ 2,000	(2,000)						8,000
Forfeiture of restricted common shares (in shares)							(7,000)
Forfeiture of restricted common shares	0
Dividends declared – common stock	(16,004,000)								(16,004,000)
Dividends declared – preferred stock		$ (2,475,000)	$ (5,122,000)							$ (2,475,000)	$ (5,122,000)
Distributions to noncontrolling interests	(2,654,000)												(2,654,000)	(2,318,000)
Redemption/conversion of operating partnership units (in shares)							165,000
Redemption/conversion of operating partnership units	2,201,000						$ 2,000	2,199,000						(2,201,000)
Net income (loss)	(14,879,000)								(14,879,000)
Net income (loss)	(13,129,000)												1,750,000
Redemption value adjustment	(1,031,000)								(1,031,000)
Ending balance (in shares) at Sep. 30, 2019					1,600,000		32,900,000
Ending balance at Sep. 30, 2019	357,330,000				$ 16,000		$ 329,000	518,304,000	(155,024,000)				(6,295,000)
Beginning balance, temporary equity (in shares) at Dec. 31, 2018						4,966,000
Beginning balance, temporary equity at Dec. 31, 2018						$ 106,123,000
Redeemable noncontrolling interests in operating partnership, beginning balance at Dec. 31, 2018														44,885,000
Increase (Decrease) in Temporary Equity [Roll Forward]
Equity-based compensation	3,959,000							3,959,000						1,949,000
Temporary equity, net income (loss)														(2,770,000)
Redemption value adjustment														1,031,000
Ending balance, temporary equity (in shares) at Sep. 30, 2019						4,966,000
Ending balance, temporary equity at Sep. 30, 2019						$ 106,123,000
Redeemable noncontrolling interests in operating partnership, ending balance at Sep. 30, 2019														40,584,000
Beginning balance (in shares) at Jun. 30, 2019					1,600,000		32,880,000
Beginning balance at Jun. 30, 2019	373,730,000				$ 16,000		$ 329,000	516,700,000	(137,775,000)				(5,540,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Equity-based compensation	1,604,000							1,604,000						755,000
Issuance of restricted shares/units (in shares)							23,000
Issuance of restricted shares/units	0													1,000
Forfeiture of restricted common shares (in shares)							(3,000)
Forfeiture of restricted common shares	0
Dividends declared – common stock	(5,339,000)								(5,339,000)
Dividends declared – preferred stock		(825,000)	$ (1,708,000)							(825,000)	(1,708,000)
Distributions to noncontrolling interests	(2,654,000)												(2,654,000)	(771,000)
Net income (loss)	(9,388,000)								(9,388,000)
Net income (loss)	(7,489,000)												1,899,000
Redemption value adjustment	11,000								11,000
Ending balance (in shares) at Sep. 30, 2019					1,600,000		32,900,000
Ending balance at Sep. 30, 2019	357,330,000				$ 16,000		$ 329,000	518,304,000	(155,024,000)				(6,295,000)
Beginning balance, temporary equity (in shares) at Jun. 30, 2019						4,966,000
Beginning balance, temporary equity at Jun. 30, 2019						$ 106,123,000
Redeemable noncontrolling interests in operating partnership, beginning balance at Jun. 30, 2019														42,075,000
Increase (Decrease) in Temporary Equity [Roll Forward]
Equity-based compensation	1,604,000							1,604,000						755,000
Temporary equity, net income (loss)														(1,465,000)
Redemption value adjustment														(11,000)
Ending balance, temporary equity (in shares) at Sep. 30, 2019						4,966,000
Ending balance, temporary equity at Sep. 30, 2019						$ 106,123,000
Redeemable noncontrolling interests in operating partnership, ending balance at Sep. 30, 2019														40,584,000
Beginning balance (in shares) at Dec. 31, 2019					1,600,000		32,885,000
Beginning balance at Dec. 31, 2019	363,254,000				$ 16,000		$ 329,000	519,551,000	(150,629,000)				(6,013,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(60,861,000)													(7,655,000)
Redemption value adjustment	26,000
Ending balance (in shares) at Jun. 30, 2020					1,600,000		33,528,000
Ending balance at Jun. 30, 2020	297,995,000				$ 16,000		$ 335,000	525,846,000	(216,574,000)				(11,628,000)
Beginning balance, temporary equity (in shares) at Dec. 31, 2019			5,008,421			5,008,000
Beginning balance, temporary equity at Dec. 31, 2019	106,920,000					$ 106,920,000
Redeemable noncontrolling interests in operating partnership, beginning balance at Dec. 31, 2019	41,570,000													41,570,000
Increase (Decrease) in Temporary Equity [Roll Forward]
Redemption value adjustment														(26,000)
Ending balance, temporary equity (in shares) at Jun. 30, 2020						5,031,000
Ending balance, temporary equity at Jun. 30, 2020						$ 107,352,000
Redeemable noncontrolling interests in operating partnership, ending balance at Jun. 30, 2020	31,589,000													31,589,000
Beginning balance (in shares) at Dec. 31, 2019					1,600,000		32,885,000
Beginning balance at Dec. 31, 2019	363,254,000				$ 16,000		$ 329,000	519,551,000	(150,629,000)				(6,013,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Purchase of common stock (in shares)							(36,000)
Purchase of common stock	(126,000)							(126,000)
Equity-based compensation (in shares)							0
Equity-based compensation	4,388,000							4,388,000						1,651,000
Issuance of stock (in shares)						23,000	3,046,000
Issuance of stock	6,410,000					$ 432,000	$ 30,000	6,380,000						0
Issuance of restricted shares/units (in shares)							375,000
Issuance of restricted shares/units	0						$ 3,000	(3,000)						0
Forfeiture of restricted common shares (in shares)							(9,000)
Forfeiture of restricted common shares	0
Dividends declared – preferred stock		(2,475,000)	$ (5,189,000)							(2,475,000)	(5,189,000)
Distributions to noncontrolling interests	(2,639,000)												(2,639,000)
Redemption/conversion of operating partnership units (in shares)							339,000
Redemption/conversion of operating partnership units	3,454,000						$ 3,000	3,451,000						(3,454,000)
Net income (loss)	(79,538,000)
Net income (loss)	(84,513,000)												(4,975,000)
Redemption value adjustment	18,000								18,000
Ending balance (in shares) at Sep. 30, 2020					1,600,000		36,600,000
Ending balance at Sep. 30, 2020	282,582,000				$ 16,000		$ 365,000	533,641,000	(237,813,000)				(13,627,000)
Beginning balance, temporary equity (in shares) at Dec. 31, 2019			5,008,421			5,008,000
Beginning balance, temporary equity at Dec. 31, 2019	106,920,000					$ 106,920,000
Redeemable noncontrolling interests in operating partnership, beginning balance at Dec. 31, 2019	41,570,000													41,570,000
Increase (Decrease) in Temporary Equity [Roll Forward]
Equity-based compensation	4,388,000							4,388,000						1,651,000
Temporary equity, net income (loss)														(10,036,000)
Redemption value adjustment														(18,000)
Ending balance, temporary equity (in shares) at Sep. 30, 2020			5,031,473			5,031,000
Ending balance, temporary equity at Sep. 30, 2020	107,352,000					$ 107,352,000
Redeemable noncontrolling interests in operating partnership, ending balance at Sep. 30, 2020	29,713,000													29,713,000
Beginning balance (in shares) at Jun. 30, 2020					1,600,000		33,528,000
Beginning balance at Jun. 30, 2020	297,995,000				$ 16,000		$ 335,000	525,846,000	(216,574,000)				(11,628,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Purchase of common stock (in shares)							(1,000)
Purchase of common stock	(2,000)							(2,000)
Equity-based compensation (in shares)							0
Equity-based compensation	1,465,000							1,465,000						541,000
Issuance of stock (in shares)							3,046,000
Issuance of stock	6,410,000						$ 30,000	6,380,000
Issuance of restricted shares/units (in shares)							29,000
Issuance of restricted shares/units	(48,000)							(48,000)
Forfeiture of restricted common shares (in shares)							(2,000)
Forfeiture of restricted common shares	0
Dividends declared – preferred stock		$ (825,000)	$ (1,729,000)							$ (825,000)	$ (1,729,000)
Net income (loss)	(18,677,000)								(18,677,000)
Net income (loss)	(20,676,000)												(1,999,000)
Redemption value adjustment	(8,000)								(8,000)
Ending balance (in shares) at Sep. 30, 2020					1,600,000		36,600,000
Ending balance at Sep. 30, 2020	282,582,000				$ 16,000		$ 365,000	533,641,000	$ (237,813,000)				$ (13,627,000)
Beginning balance, temporary equity (in shares) at Jun. 30, 2020						5,031,000
Beginning balance, temporary equity at Jun. 30, 2020						$ 107,352,000
Redeemable noncontrolling interests in operating partnership, beginning balance at Jun. 30, 2020	31,589,000													31,589,000
Increase (Decrease) in Temporary Equity [Roll Forward]
Equity-based compensation	1,465,000							$ 1,465,000						541,000
Issuance of restricted shares/units														(44,000)
Temporary equity, net income (loss)														(2,381,000)
Redemption value adjustment														8,000
Ending balance, temporary equity (in shares) at Sep. 30, 2020			5,031,473			5,031,000
Ending balance, temporary equity at Sep. 30, 2020	107,352,000					$ 107,352,000
Redeemable noncontrolling interests in operating partnership, ending balance at Sep. 30, 2020	$ 29,713,000													$ 29,713,000