Condensed Consolidated Income Statements - USD ($) shares in Thousands, $ in Thousands	3 Months Ended				9 Months Ended		12 Months Ended
	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Revenues:
Rental income	$ 29,404			$ 24,179	$ 85,254	$ 67,857
Tenant reimbursements	2,543			2,089	7,253	5,815
Independent living facilities	825			766	2,407	2,177
Interest and other income	176			72	1,471	587
Total revenues	32,948			27,106	96,385	76,436
Expenses:
Depreciation and amortization	9,745			8,248	28,156	23,433
Interest expense	5,592			5,743	17,690	17,044
Loss on the extinguishment of debt	0			0	11,883	326
Property taxes	2,543			2,089	7,253	5,815
Independent living facilities	698			708	2,003	1,926
Impairment of real estate investment	0			0	890	0
Acquisition costs	0			203	0	203
General and administrative	3,059			2,283	8,426	6,724
Total expenses	21,637			19,274	76,301	55,471
Other income:
Gain on disposition of other real estate investment	0			0	3,538	0
Net income	$ 11,311			$ 7,832	$ 23,622	$ 20,965	$ 29,353
Earnings per common share:
Basic (in usd per share)	$ 0.15			$ 0.13	$ 0.33	$ 0.38
Diluted (in usd per share)	$ 0.15			$ 0.13	$ 0.33	$ 0.38
Weighted-average number of common shares:
Basic (in shares)	75,471			57,595	71,693	54,403
Diluted (in shares)	75,471			57,595	71,693	54,403
Dividends declared per common share (in usd per share)	$ 0.185	$ 0.185	$ 0.185	$ 0.17	$ 0.555	$ 0.51	$ 0.68