CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Income Statement [Abstract]
Basic and diluted net loss per share (in dollars per share)	$ (0.15)	$ (0.21)
Revenues:
Revenue from tenants	$ 17,051	$ 15,229
Operating expenses:
Asset and property management fees to related parties	1,548	1,483
Property operating	7,336	6,856
Acquisition and transaction related	0	0
General and administrative	1,931	3,004
Depreciation and amortization	7,414	7,731
Total operating expenses	18,229	19,074
Operating loss	(1,178)	(3,845)
Other income (expense):
Interest expense	(3,560)	(2,803)
Other income	154	64
Total other expense	(3,406)	(2,739)
Net loss	(4,584)	(6,584)
Other comprehensive loss:
Change in unrealized loss on derivative	(70)
Change in unrealized loss on derivative		0
Other comprehensive loss	(70)	0
Comprehensive loss	$ (4,654)	$ (6,584)
Weighted-average shares outstanding — Basic (in shares)	30,977,955	31,431,555
Net loss per share attributable to common stockholders — Basic (in dollars per share)	$ (0.15)	$ (0.21)
Weighted-average shares outstanding — Diluted (in shares)	30,977,955	31,431,555
Net loss per share attributable to common stockholders — Diluted (in dollars per share)	$ (0.15)	$ (0.21)