Summarized Condensed Consolidating Information - Condensed Consolidating Income Statements (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Revenues:
Rental income	$ 27,339	$ 20,897
Tenant reimbursements	2,321	1,797
Independent living facilities	793	681
Interest and other income	155	254
Total revenues	30,608	23,629
Expenses:
Depreciation and amortization	9,076	7,293
Interest expense	5,879	6,187
Property taxes	2,321	1,797
Independent living facilities	661	620
General and administrative	2,390	2,230
Total expenses	20,327	18,127
Income in Subsidiary	0	0
Net income	10,281	5,502	$ 29,353
Reportable Legal Entities [Member] | Parent Guarantor [Member]
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	550	433
Total expenses	550	433
Income in Subsidiary	10,831	5,935
Net income	10,281	5,502
Reportable Legal Entities [Member] | Issuers [Member]
Revenues:
Rental income	13,223	6,897
Tenant reimbursements	1,078	566
Independent living facilities	0	0
Interest and other income	0	0
Total revenues	14,301	7,463
Expenses:
Depreciation and amortization	4,186	2,146
Interest expense	5,879	5,372
Property taxes	1,078	566
Independent living facilities	0	0
General and administrative	1,840	1,731
Total expenses	12,983	9,815
Income in Subsidiary	9,513	8,287
Net income	10,831	5,935
Reportable Legal Entities [Member] | Combined Subsidiary Guarantors [Member]
Revenues:
Rental income	11,368	11,275
Tenant reimbursements	1,117	1,099
Independent living facilities	793	681
Interest and other income	155	254
Total revenues	13,433	13,309
Expenses:
Depreciation and amortization	4,210	4,433
Interest expense	0	0
Property taxes	1,117	1,099
Independent living facilities	661	620
General and administrative	0	49
Total expenses	5,988	6,201
Income in Subsidiary	0	0
Net income	7,445	7,108
Reportable Legal Entities [Member] | Combined Non-Guarantor Subsidiaries [Member]
Revenues:
Rental income	2,748	2,725
Tenant reimbursements	126	132
Independent living facilities	0	0
Interest and other income	0	0
Total revenues	2,874	2,857
Expenses:
Depreciation and amortization	680	714
Interest expense	0	815
Property taxes	126	132
Independent living facilities	0	0
General and administrative	0	17
Total expenses	806	1,678
Income in Subsidiary	0	0
Net income	2,068	1,179
Elimination [Member]
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
Income in Subsidiary	(20,344)	(14,222)
Net income	$ (20,344)	$ (14,222)