Condensed Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Cumulative Distributions in Excess of Earnings
Beginning balance at Dec. 31, 2018	$ 768,247	$ 859	$ 965,578	$ (198,190)
Beginning balance (in shares) at Dec. 31, 2018		85,867,044
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock, net	47,243	$ 24	47,219
Issuance of common stock, net, (in shares)		2,459,000
Vesting of restricted common stock, net of shares withheld for employee taxes	(1,495)	$ 1	(1,496)
Vesting of restricted common stock, net of shares withheld for employee taxes (in shares)		72,229
Amortization of stock-based compensation	994		994
Common dividends	(20,011)			(20,011)
Net income	16,053			16,053
Ending balance at Mar. 31, 2019	811,031	$ 884	1,012,295	(202,148)
Ending balance (in shares) at Mar. 31, 2019		88,398,273
Beginning balance at Dec. 31, 2019	927,591	$ 951	1,162,990	(236,350)
Beginning balance (in shares) at Dec. 31, 2019		95,103,270
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock, net	(90)		(90)
Vesting of restricted common stock, net of shares withheld for employee taxes	(1,986)	$ 1	(1,987)
Vesting of restricted common stock, net of shares withheld for employee taxes (in shares)		93,061
Amortization of stock-based compensation	884		884
Common dividends	(23,931)			(23,931)
Net income	19,325			19,325
Ending balance at Mar. 31, 2020	$ 921,793	$ 952	$ 1,161,797	$ (240,956)
Ending balance (in shares) at Mar. 31, 2020		95,196,331