Consolidated Income Statements - USD ($) shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenues:
Rental income									$ 117,633	$ 93,126	$ 65,979
Tenant reimbursements									10,254	7,846	5,497
Independent living facilities									3,228	2,970	2,510
Interest and other income									1,867	737	965
Total revenues	$ 36,597	$ 32,948	$ 32,829	$ 30,608	$ 28,243	$ 27,106	$ 25,701	$ 23,629	132,982	104,679	74,951
Expenses:
Depreciation and amortization									39,159	31,965	24,133
Interest expense									24,196	22,873	24,048
Loss on the extinguishment of debt									11,883	326	1,208
Property taxes									10,254	7,846	5,497
Independent living facilities									2,733	2,549	2,376
Impairment of real estate investment									890	0	0
Acquisition costs									0	205	0
Reserve for advances and deferred rent									10,414	0	0
General and administrative									11,117	9,297	7,655
Total expenses									110,646	75,061	64,917
Other income (expense):
Loss on sale of asset									0	(265)	0
Gain on disposition of other real estate investment									3,538	0	0
Net income	$ 2,252	$ 11,311	$ 2,030	$ 10,281	$ 8,388	$ 7,832	$ 7,631	$ 5,502	$ 25,874	$ 29,353	$ 10,034
Earnings per common share:
Basic (usd per share)	$ 0.03	$ 0.15	$ 0.03	$ 0.15	$ 0.14	$ 0.13	$ 0.13	$ 0.11	$ 0.35	$ 0.52	$ 0.26
Diluted (usd per share)	$ 0.03	$ 0.15	$ 0.03	$ 0.15	$ 0.14	$ 0.13	$ 0.13	$ 0.11	$ 0.35	$ 0.52	$ 0.26
Weighted-average number of common shares:
Basic (shares)	75,476	75,471	72,564	66,951	60,875	57,595	57,478	48,101	72,647	56,030	37,380
Diluted (shares)	75,476	75,471	72,564	66,951	60,875	57,595	57,478	48,101	72,647	56,030	37,380