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 $0.34 per share for the twelve months ended 12/31/2015 and three months ended 3/31/2016, respectively)	(25,548)			(25,548)
Net income	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	105,771	$ 98	105,673
Issuance of common stock, net, shares		9,775,000
Vesting of restricted common stock, net of shares withheld for employee taxes	(515)	$ 0	(515)
Vesting of restricted common stock, net of shares withheld for employee taxes, shares		109,134
Amortization of stock-based compensation	868		868
Common dividend ($0.64 and $0.34 per share for the twelve months ended 12/31/2015 and three months ended 3/31/2016, respectively)	(19,691)			(19,691)
Net income	13,133			13,133
Ending balance at Jun. 30, 2016	$ 361,854	$ 575	$ 516,243	$ (154,964)
Ending balance, shares at Jun. 30, 2016		57,548,876