Condensed Consolidated Statement of Equity - 6 months ended Jun. 30, 2018 - USD ($) $ in Thousands	Total	Common Stock	Additional paid-in capital	Distributions in excess of earnings	Total stockholders' equity	Noncontrolling interests
Beginning balance (in shares) at Dec. 31, 2017	44,937,763	44,937,763
Beginning balance at Dec. 31, 2017	$ 420,283	$ 449	$ 287,407	$ (61,166)	$ 226,690	$ 193,593
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	12,928			9,359	9,359	3,569
Net proceeds from sales of common stock (in shares)		3,542,178
Net proceeds from sales of common stock	48,981	$ 35	48,946		48,981
Restricted stock awards, net of tax withholding (in shares)		126,050
Restricted stock awards, net of tax withholding	904	$ 2	902		904
Restricted stock award forfeitures (in shares)		(628)
Restricted stock award forfeitures	(4)		(4)		(4)
Issuance of operating partnership units for acquisitions	2,196		(5)		(5)	2,201
Redemption of operating partnership units (in shares)		163,000
Redemption of operating partnership units	(2,531)	$ 2	1,331		1,333	(3,864)
Dividends and distributions declared	$ (25,787)			(18,841)	(18,841)	(6,946)
Ending balance, shares (in shares) at Jun. 30, 2018	48,768,363	48,768,363
Ending balance at Jun. 30, 2018	$ 456,970	$ 488	$ 338,577	$ (70,648)	$ 268,417	$ 188,553