CONSOLIDATED STATEMENT OF CHANGES IN EQUITY - USD ($) $ in Thousands	Total	Restricted Stock	Preferred Stock	Total Stockholders’ Equity	Total Stockholders’ Equity Restricted Stock	Total Stockholders’ Equity Preferred Stock	Preferred Stock	Preferred Stock Preferred Stock	Common Stock	Common Stock Restricted Stock	Additional Paid-in Capital	Additional Paid-in Capital Restricted Stock	Additional Paid-in Capital Preferred Stock	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	Non-controlling Interests	Non-controlling Interests Restricted Stock
Beginning balance (in shares) at Dec. 31, 2016									65,805,184
Beginning Balance at Dec. 31, 2016	$ 984,866			$ 984,866					$ 658		$ 1,449,662			$ 0	$ (465,454)	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of new shares (in shares)									38,210,213
Issuance of new shares	917,046			917,046					$ 382		916,664
Common stock issued through distribution reinvestment plan (in shares)									2,373,256
Common stock issued through distribution reinvestment plan	$ 55,853			55,853					$ 24		55,829
Common stock repurchases (in shares)	(1,225,365)								(1,225,365)
Common stock repurchases	$ (29,058)			(29,058)					$ (12)		(29,046)
Share-based compensation (in shares)									8,897
Share-based compensation, net of forfeitures	128			128							128
Distributions declared on Common Stock	(145,926)			(145,926)											(145,926)
Issuances of operating partnership units	4,887															4,887
Distributions to non-controlling interest holders	(258)															(258)
Net loss	(46,577)			(46,494)											(46,494)	(83)
Other comprehensive income (loss)	95			95										95
Ending balance (in shares) at Dec. 31, 2017									105,172,185
Ending Balance at Dec. 31, 2017	1,741,056			1,736,510					$ 1,052		2,393,237			95	(657,874)	4,546
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued through distribution reinvestment plan (in shares)									990,393
Common stock issued through distribution reinvestment plan	$ 23,248			23,248					$ 10		23,238
Common stock repurchases (in shares)	(412,939)								(1,142,190)
Common stock repurchases	$ (20,531)			(20,531)					$ (11)		(20,520)
Share-based compensation (in shares)									127,402
Share-based compensation, net of forfeitures	5,266			450					$ 1		449					4,816
Distributions declared on Common Stock	(116,539)			(116,539)											(116,539)
Distributions to non-controlling interest holders	(454)			(225)											(225)	(229)
Net loss	(37,471)			(37,409)											(37,409)	(62)
Other comprehensive income (loss)	(626)			(626)										(626)
Vesting and conversion of Class B Units (in shares)									1,052,420
Vesting and conversion of Class B Units	15,786			15,786					$ 11		15,775
Redemption of Class A Units (in shares)									30,691
Redemption of Class A Units	0			736							736					(736)
Ending balance (in shares) at Dec. 31, 2018							0		106,230,901
Ending Balance at Dec. 31, 2018	1,609,735			1,601,400			$ 0		$ 1,063		2,412,915			(531)	(812,047)	8,335
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of new shares (in shares)								6,917,230	2,229,647
Issuance of new shares	$ 31,601		$ 168,929	31,601		$ 168,929		$ 69	$ 22		31,579		$ 168,860
Common stock issued through distribution reinvestment plan (in shares)	1,000,000.0
Common stock issued through distribution reinvestment plan	$ 0
Common stock repurchases (in shares)									(19,870)
Common stock repurchases	(274)			(274)					$ (1)		(273)
Share-based compensation (in shares)										34,588
Share-based compensation, net of forfeitures		$ 12,717			$ 1,072					$ 1		$ 1,071					$ 11,645
Distributions declared on Common Stock	(117,100)			(117,100)											(117,100)
Distributions to non-controlling interest holders	(654)			(494)											(494)	(160)
Net loss	4,163			4,147											4,147	16
Other comprehensive income (loss)	531			531										531
Dividends declared on Preferred Stock	(7,248)			(7,248)											(7,248)
Rebalancing of ownership percentage	0			937							937					(937)
Ending balance (in shares) at Dec. 31, 2019							6,917,230		108,475,266
Ending Balance at Dec. 31, 2019	$ 1,702,230			$ 1,683,331			$ 69		$ 1,085		$ 2,615,089			$ 0	$ (932,912)	$ 18,899