CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Total Company’s Stockholders’ Equity	Common Stock	Additional Paid-in Capital	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Income (Loss)	Non-controlling Interests
Beginning Balance (in shares) at Dec. 31, 2017			186,709,000
Beginning Balance at Dec. 31, 2017	$ 944,799	$ 938,501	$ 1,867	$ 1,681,040	$ (744,090)	$ (316)	$ 6,298
Increase (Decrease) in Stockholder's Equity
Share-based payment of advisor asset management fees (in shares)			294,000
Share-based payment of advisor asset management fees	2,500	2,500	$ 3	2,497
Issuance and amortization of equity-based compensation	42	42		42
Non-controlling interests - contributions	71						71
Non-controlling interests - distributions	(150)						(150)
Shares redeemed for cash (in shares)			(1,048,000)
Shares redeemed for cash	(8,206)	(8,206)	$ (11)	(8,195)
Distributions declared	(15,560)	(15,560)			(15,560)
Proceeds from distribution reinvestment plan (in shares)			1,274,000
Proceeds from distribution reinvestment plan	10,831	10,831	$ 13	10,818
Other comprehensive income (loss)	743	743				743
Net income (loss)	(33,888)	(33,668)			(33,668)		(220)
Ending Balance (in shares) at Mar. 31, 2018			187,229,000
Ending Balance at Mar. 31, 2018	901,182	895,183	$ 1,872	1,686,202	(793,318)	427	5,999
Beginning Balance (in shares) at Dec. 31, 2017			186,709,000
Beginning Balance at Dec. 31, 2017	944,799	938,501	$ 1,867	1,681,040	(744,090)	(316)	6,298
Increase (Decrease) in Stockholder's Equity
Other comprehensive income (loss)	(886)
Net income (loss)	(68,093)
Ending Balance (in shares) at Jun. 30, 2018			187,466,000
Ending Balance at Jun. 30, 2018	852,190	846,244	$ 1,874	1,688,734	(843,162)	(1,202)	5,946
Beginning Balance (in shares) at Mar. 31, 2018			187,229,000
Beginning Balance at Mar. 31, 2018	901,182	895,183	$ 1,872	1,686,202	(793,318)	427	5,999
Increase (Decrease) in Stockholder's Equity
Share-based payment of advisor asset management fees (in shares)			294,000
Share-based payment of advisor asset management fees	2,500	2,500	$ 3	2,497
Issuance and amortization of equity-based compensation (in shares)			21,000
Issuance and amortization of equity-based compensation	42	42		42
Non-controlling interests - contributions	218						218
Non-controlling interests - distributions	(160)						(160)
Shares redeemed for cash (in shares)			(1,003,000)
Shares redeemed for cash	(7,867)	(7,867)	$ (10)	(7,857)
Distributions declared	(15,750)	(15,750)			(15,750)
Proceeds from distribution reinvestment plan (in shares)			925,000
Proceeds from distribution reinvestment plan	7,859	7,859	$ 9	7,850
Other comprehensive income (loss)	(1,629)	(1,629)				(1,629)
Net income (loss)	(34,205)	(34,094)			(34,094)		(111)
Ending Balance (in shares) at Jun. 30, 2018			187,466,000
Ending Balance at Jun. 30, 2018	$ 852,190	846,244	$ 1,874	1,688,734	(843,162)	(1,202)	5,946
Beginning Balance (in shares) at Dec. 31, 2018	188,495,355		188,495,000
Beginning Balance at Dec. 31, 2018	$ 744,374	738,675	$ 1,885	1,697,998	(958,924)	(2,284)	5,699
Increase (Decrease) in Stockholder's Equity
Share-based payment of advisor asset management fees (in shares)			352,000
Share-based payment of advisor asset management fees	2,500	2,500	$ 4	2,496
Issuance and amortization of equity-based compensation	45	45		45
Non-controlling interests - contributions	256						256
Non-controlling interests - distributions	(72)						(72)
Shares redeemed for cash (in shares)			(279,000)
Shares redeemed for cash	(1,978)	(1,978)	$ (3)	(1,975)
Distributions declared	(5,413)	(5,413)			(5,413)
Proceeds from distribution reinvestment plan (in shares)			687,000
Proceeds from distribution reinvestment plan	4,876	4,876	$ 7	4,869
Other comprehensive income (loss)	200	200				200
Net income (loss)	(18,669)	(18,617)			(18,617)		(52)
Ending Balance (in shares) at Mar. 31, 2019			189,255,000
Ending Balance at Mar. 31, 2019	$ 726,119	720,288	$ 1,893	1,703,433	(982,954)	(2,084)	5,831
Beginning Balance (in shares) at Dec. 31, 2018	188,495,355		188,495,000
Beginning Balance at Dec. 31, 2018	$ 744,374	738,675	$ 1,885	1,697,998	(958,924)	(2,284)	5,699
Increase (Decrease) in Stockholder's Equity
Share-based payment of advisor asset management fees (in shares)			700,000
Other comprehensive income (loss)	(874)
Net income (loss)	$ (36,129)
Ending Balance (in shares) at Jun. 30, 2019	189,181,904		189,182,000
Ending Balance at Jun. 30, 2019	$ 706,922	701,410	$ 1,892	1,702,776	(1,000,100)	(3,158)	5,512
Beginning Balance (in shares) at Mar. 31, 2019			189,255,000
Beginning Balance at Mar. 31, 2019	726,119	720,288	$ 1,893	1,703,433	(982,954)	(2,084)	5,831
Increase (Decrease) in Stockholder's Equity
Share-based payment of advisor asset management fees (in shares)			352,000
Share-based payment of advisor asset management fees	2,500	2,500	$ 4	2,496
Issuance and amortization of equity-based compensation (in shares)			25,000
Issuance and amortization of equity-based compensation	46	46		46
Non-controlling interests - contributions	62						62
Non-controlling interests - distributions	(67)						(67)
Shares redeemed for cash (in shares)			(450,000)
Shares redeemed for cash	(3,204)	(3,204)	$ (5)	(3,199)
Other comprehensive income (loss)	(1,074)	(1,074)				(1,074)
Net income (loss)	$ (17,460)	(17,146)			(17,146)		(314)
Ending Balance (in shares) at Jun. 30, 2019	189,181,904		189,182,000
Ending Balance at Jun. 30, 2019	$ 706,922	$ 701,410	$ 1,892	$ 1,702,776	$ (1,000,100)	$ (3,158)	$ 5,512