CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Income (Loss)	Total Company’s Stockholders’ Equity	Non-controlling Interests
Beginning Balance (in shares) at Dec. 31, 2018		188,495,000
Beginning Balance at Dec. 31, 2018	$ 744,374	$ 1,885	$ 1,697,998	$ (958,924)	$ (2,284)	$ 738,675	$ 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	$ 4	2,496			2,500
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)	$ (3)	(1,975)			(1,978)
Distributions declared	(5,413)			(5,413)		(5,413)
Proceeds from distribution reinvestment plan (in shares)		687,000
Proceeds from distribution reinvestment plan	4,876	$ 7	4,869			4,876
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	$ 1,893	1,703,433	(982,954)	(2,084)	720,288	5,831
Beginning Balance (in shares) at Dec. 31, 2018		188,495,000
Beginning Balance at Dec. 31, 2018	744,374	$ 1,885	1,697,998	(958,924)	(2,284)	738,675	5,699
Increase (Decrease) in Stockholder's Equity
Other comprehensive income (loss)	(88)
Net income (loss)	(50,826)
Ending Balance (in shares) at Sep. 30, 2019		189,219,000
Ending Balance at Sep. 30, 2019	693,360	$ 1,893	1,703,086	(1,014,724)	(2,372)	687,883	5,477
Beginning Balance (in shares) at Mar. 31, 2019		189,255,000
Beginning Balance at Mar. 31, 2019	726,119	$ 1,893	1,703,433	(982,954)	(2,084)	720,288	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	$ 4	2,496			2,500
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)	$ (5)	(3,199)			(3,204)
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		189,182,000
Ending Balance at Jun. 30, 2019	706,922	$ 1,892	1,702,776	(1,000,100)	(3,158)	701,410	5,512
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	$ 4	2,496			2,500
Issuance and amortization of equity-based compensation	45		45			45
Non-controlling interests - contributions	112						112
Non-controlling interests - distributions	(74)						(74)
Shares redeemed for cash (in shares)		(315,000)
Shares redeemed for cash	(2,234)	$ (3)	(2,231)			(2,234)
Other comprehensive income (loss)	786				786	786
Net income (loss)	(14,697)			(14,624)		(14,624)	(73)
Ending Balance (in shares) at Sep. 30, 2019		189,219,000
Ending Balance at Sep. 30, 2019	$ 693,360	$ 1,893	1,703,086	(1,014,724)	(2,372)	687,883	5,477
Beginning Balance (in shares) at Dec. 31, 2019	189,111,561	189,111,000
Beginning Balance at Dec. 31, 2019	$ 667,504	$ 1,891	1,702,260	(1,041,297)	(470)	662,384	5,120
Increase (Decrease) in Stockholder's Equity
Share-based payment of advisor asset management fees (in shares)		400,000
Share-based payment of advisor asset management fees	2,500	$ 4	2,496			2,500
Issuance and amortization of equity-based compensation	38		38			38
Non-controlling interests - contributions	86						86
Non-controlling interests - distributions	(85)						(85)
Shares redeemed for cash (in shares)		(320,000)
Shares redeemed for cash	(1,998)	$ (3)	(1,995)			(1,998)
Other comprehensive income (loss)	(1,044)				(1,044)	(1,044)
Net income (loss)	(12,547)			(12,481)		(12,481)	(66)
Ending Balance (in shares) at Mar. 31, 2020		189,191,000
Ending Balance at Mar. 31, 2020	$ 654,454	$ 1,892	1,702,799	(1,053,778)	(1,514)	649,399	5,055
Beginning Balance (in shares) at Dec. 31, 2019	189,111,561	189,111,000
Beginning Balance at Dec. 31, 2019	$ 667,504	$ 1,891	1,702,260	(1,041,297)	(470)	662,384	5,120
Increase (Decrease) in Stockholder's Equity
Share-based payment of advisor asset management fees (in shares)	1,200,000
Other comprehensive income (loss)	$ (399)
Net income (loss)	$ (170,700)
Ending Balance (in shares) at Sep. 30, 2020	190,020,662	190,020,000
Ending Balance at Sep. 30, 2020	$ 502,047	$ 1,900	1,707,876	(1,211,046)	(869)	497,861	4,186
Beginning Balance (in shares) at Mar. 31, 2020		189,191,000
Beginning Balance at Mar. 31, 2020	654,454	$ 1,892	1,702,799	(1,053,778)	(1,514)	649,399	5,055
Increase (Decrease) in Stockholder's Equity
Share-based payment of advisor asset management fees (in shares)		400,000
Share-based payment of advisor asset management fees	2,500	$ 4	2,496			2,500
Issuance and amortization of equity-based compensation (in shares)		29,000
Issuance and amortization of equity-based compensation	39		39			39
Non-controlling interests - contributions	7						7
Non-controlling interests - distributions	(54)						(54)
Other comprehensive income (loss)	186				186	186
Net income (loss)	(139,995)			(139,281)		(139,281)	(714)
Ending Balance (in shares) at Jun. 30, 2020		189,620,000
Ending Balance at Jun. 30, 2020	517,137	$ 1,896	1,705,334	(1,193,059)	(1,328)	512,843	4,294
Increase (Decrease) in Stockholder's Equity
Share-based payment of advisor asset management fees (in shares)		400,000
Share-based payment of advisor asset management fees	2,500	$ 4	2,496			2,500
Issuance and amortization of equity-based compensation (in shares)		0
Issuance and amortization of equity-based compensation	46		46			46
Non-controlling interests - contributions	75						75
Non-controlling interests - distributions	(12)						(12)
Other comprehensive income (loss)	459				459	459
Net income (loss)	$ (18,158)			(17,987)		(17,987)	(171)
Ending Balance (in shares) at Sep. 30, 2020	190,020,662	190,020,000
Ending Balance at Sep. 30, 2020	$ 502,047	$ 1,900	$ 1,707,876	$ (1,211,046)	$ (869)	$ 497,861	$ 4,186