CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY - 6 months ended Jun. 30, 2016 - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit
Balance, beginning of period (in shares) at Dec. 31, 2015		64,961,256
Balance, beginning of period at Dec. 31, 2015	$ 1,126,749	$ 650	$ 1,429,294	$ (303,195)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued through distribution reinvestment plan (in shares)	522,248	522,248
Common stock issued through distribution reinvestment plan	$ 12,605	$ 5	12,600
Common stock repurchases (in shares)	(7,854)	(7,854)
Common stock repurchases	$ (190)		(190)
Share-based compensation	20		20
Distributions declared	(53,432)			(53,432)
Net loss	(9,931)			(9,931)
Balance, end of period (in shares) at Jun. 30, 2016		65,475,650
Balance, end of period at Jun. 30, 2016	$ 1,075,821	$ 655	$ 1,441,724	$ (366,558)