Summarized Condensed Consolidating Information - Condensed Consolidating Income Statements (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Revenues:
Rental income	$ 33,816	$ 27,339
Tenant reimbursements	2,968	2,321
Independent living facilities	799	793
Interest and other income	518	155
Total revenues	38,101	30,608
Expenses:
Depreciation and amortization	11,577	9,076
Interest expense	7,092	5,879
Property taxes	2,968	2,321
Independent living facilities	716	661
General and administrative	3,192	2,390
Total expenses	25,545	20,327
Gain on sale of real estate	2,051	0
Income in Subsidiary	0	0
Net income	14,607	10,281	$ 25,874
Reportable Legal Entities | Parent Guarantor
Revenues:
Rental income	0	0
Tenant reimbursements	0	0
Independent living facilities	0	0
Interest and other income	0	0
Total revenues	0	0
Expenses:
Depreciation and amortization	0	0
Interest expense	0	0
Property taxes	0	0
Independent living facilities	0	0
General and administrative	904	550
Total expenses	904	550
Gain on sale of real estate	0
Income in Subsidiary	15,511	10,831
Net income	14,607	10,281
Reportable Legal Entities | Issuers
Revenues:
Rental income	19,398	13,223
Tenant reimbursements	1,764	1,078
Independent living facilities	0	0
Interest and other income	423	0
Total revenues	21,585	14,301
Expenses:
Depreciation and amortization	6,937	4,186
Interest expense	7,092	5,879
Property taxes	1,764	1,078
Independent living facilities	0	0
General and administrative	2,288	1,840
Total expenses	18,081	12,983
Gain on sale of real estate	2,051
Income in Subsidiary	9,956	9,513
Net income	15,511	10,831
Reportable Legal Entities | Combined Subsidiary Guarantors
Revenues:
Rental income	14,418	14,116
Tenant reimbursements	1,204	1,243
Independent living facilities	799	793
Interest and other income	95	155
Total revenues	16,516	16,307
Expenses:
Depreciation and amortization	4,640	4,890
Interest expense	0	0
Property taxes	1,204	1,243
Independent living facilities	716	661
General and administrative	0	0
Total expenses	6,560	6,794
Gain on sale of real estate	0
Income in Subsidiary	0	0
Net income	9,956	9,513
Elimination
Revenues:
Rental income	0	0
Tenant reimbursements	0	0
Independent living facilities	0	0
Interest and other income	0	0
Total revenues	0	0
Expenses:
Depreciation and amortization	0	0
Interest expense	0	0
Property taxes	0	0
Independent living facilities	0	0
General and administrative	0	0
Total expenses	0	0
Gain on sale of real estate	0
Income in Subsidiary	(25,467)	(20,344)
Net income	$ (25,467)	$ (20,344)