Consolidated Statements of Equity - USD ($) shares in Thousands, $ in Thousands	Common stock	Additional Paid-in Capital	Retained Earnings (Deficit)	Cumulative Dividends	Non-controlling interest	Total
Balance at Dec. 31, 2015	$ 118	$ 114,783	$ 659	$ (7,188)	$ 30,162	$ 138,534
Balance (in shares) at Dec. 31, 2015	11,979
Increase (decrease) in shareholders' equity
Net income (loss)			(412)		(37)	(449)
Grant of unvested restricted stock (in shares)	119
Issuance of stock under the at-the-market offering, net of costs	$ 10	9,224				9,234
Issuance of stock under the at-the-market offering, net of costs (in shares)	844
Conversion of Common units to shares of common stock	$ 11	10,450			(10,461)
Conversion of Common units to shares of common stock (in shares)	1,109
Stock based compensation		892				892
Dividends and distributions accrued or paid		(2,057)		(5,073)	(2,232)	(9,362)
Issuance of Common units as partial consideration for asset acquisition					28,825	28,825
Reclassification of Common units from mezzanine equity					9,519	9,519
Forfeiture of unvested restricted stock		(3)				(3)
Forfeiture of unvested restricted stock (in shares)	(5)
Adjustments to non-controlling interest resulting from changes in ownership of the Operating Partnership		4,282			(4,282)
Balance at Sep. 30, 2016	$ 139	137,571	247	(12,261)	51,494	177,190
Balance (in shares) at Sep. 30, 2016	14,046
Balance at Dec. 31, 2016	$ 172	172,100	4,103	(14,473)	53,692	215,594
Balance (in shares) at Dec. 31, 2016	17,351
Increase (decrease) in shareholders' equity
Net income (loss)			2,277		353	2,630
Grant of unvested restricted stock (in shares)	205
Costs incurred related to the at-the-market offering		(119)				(119)
Conversion of Common units to shares of common stock	$ 11	10,944			(10,955)
Conversion of Common units to shares of common stock (in shares)	1,108
Stock based compensation		1,100				1,100
Dividends and distributions accrued or paid			(3,715)	(12,475)	(2,398)	(18,588)
Issuance of Common stock as partial consideration for asset acquisition and business combination	$ 148	168,835				168,983
Issuance of Common stock as partial consideration for asset acquisition and business combination (in shares)	14,815
Issuance of Common units as partial consideration for business combination					2,494	2,494
Issuance of Common units as partial consideration for asset acquisition					10,035	10,035
Repurchase and cancellation of shares	$ (9)	(7,437)				(7,446)
Repurchase and cancellation of shares (in shares)	(841)
Forfeiture of unvested restricted stock		(9)				(9)
Forfeiture of unvested restricted stock (in shares)	(6)
Adjustments to non-controlling interest resulting from changes in ownership of the Operating Partnership		(3,101)			3,101
Balance at Sep. 30, 2017	$ 322	$ 342,313	$ 2,665	$ (26,948)	$ 56,322	$ 374,674
Balance (in shares) at Sep. 30, 2017	32,632