Condensed Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Cumulative Distributions in Excess of Earnings [Member]
Beginning balance at Dec. 31, 2014	$ 113,462	$ 313	$ 246,041	$ (132,892)
Beginning balance, shares at Dec. 31, 2014		31,251,157
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock, net	162,963	$ 163	162,800
Issuance of common stock, net, shares		16,330,000
Vesting of restricted common stock, net of shares withheld for employee taxes	(145)	$ 1	(146)
Vesting of restricted common stock, net of shares withheld for employee taxes, shares		83,585
Amortization of stock-based compensation	1,522		1,522
Common dividend ($0..64 and $0.17 per share for the twelve months ended 12/31/2015 and three months ended 3/31/2016, respectively)	(25,548)			(25,548)
Net income (loss)	10,034			10,034
Ending balance at Dec. 31, 2015	262,288	$ 477	410,217	(148,406)
Ending balance, shares at Dec. 31, 2015		47,664,742
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock, net	105,735	$ 98	105,637
Issuance of common stock, net, shares		9,775,000
Vesting of restricted common stock	0	$ 0	0
Vesting of restricted common stock, shares		15,080
Amortization of stock-based compensation	431		431
Common dividend ($0..64 and $0.17 per share for the twelve months ended 12/31/2015 and three months ended 3/31/2016, respectively)	(9,845)			(9,845)
Net income (loss)	5,502			5,502
Ending balance at Mar. 31, 2016	$ 364,111	$ 575	$ 516,285	$ (152,749)
Ending balance, shares at Mar. 31, 2016		57,454,822