Summarized Condensed Consolidating Information - Condensed Consolidating Income Statements (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Revenues:
Rental income	$ 28,511	$ 22,781	$ 55,850	$ 43,678
Tenant reimbursements	2,389	1,929	4,710	3,726
Independent living facilities	789	730	1,582	1,411
Interest and other income	1,140	261	1,295	515
Total revenues	32,829	25,701	63,437	49,330
Expenses:
Depreciation and amortization	9,335	7,892	18,411	15,185
Interest expense	6,219	5,440	12,098	11,301
Loss on the extinguishment of debt	11,883	0	11,883	326
Property taxes	2,389	1,929	4,710	3,726
Independent living facilities	644	598	1,305	1,218
Impairment of real estate investment	890	0	890	0
General and administrative	2,977	2,211	5,367	4,441
Total expenses	34,337	18,070	54,664	36,197
Gain on disposition of other real estate investment	3,538	0	3,538	0
Income in Subsidiary	0	0	0	0
Net income	2,030	7,631	12,311	13,133	$ 29,353
Reportable Legal Entities [Member] | Parent Guarantor [Member]
Revenues:
Rental income	0	0	0	0
Tenant reimbursements	0	0	0	0
Independent living facilities	0	0	0	0
Interest and other income	0	0	0	0
Total revenues	0	0	0	0
Expenses:
Depreciation and amortization	0	0	0	0
Interest expense	0	0	0	0
Loss on the extinguishment of debt	0		0	0
Property taxes	0	0	0	0
Independent living facilities	0	0	0	0
Impairment of real estate investment	0		0
General and administrative	728	438	1,277	871
Total expenses	728	438	1,277	871
Gain on disposition of other real estate investment	0		0
Income in Subsidiary	2,758	8,069	13,588	14,004
Net income	2,030	7,631	12,311	13,133
Reportable Legal Entities [Member] | Issuers [Member]
Revenues:
Rental income	14,294	8,742	27,517	15,639
Tenant reimbursements	1,158	697	2,236	1,263
Independent living facilities	0	0	0	0
Interest and other income	0	0	0	0
Total revenues	15,452	9,439	29,753	16,902
Expenses:
Depreciation and amortization	4,529	2,778	8,715	4,924
Interest expense	6,219	5,434	12,098	10,806
Loss on the extinguishment of debt	11,883		11,883	0
Property taxes	1,158	697	2,236	1,263
Independent living facilities	0	0	0	0
Impairment of real estate investment	0		0
General and administrative	2,187	1,773	4,028	3,504
Total expenses	25,976	10,682	38,960	20,497
Gain on disposition of other real estate investment	0		0
Income in Subsidiary	13,282	9,312	22,795	17,599
Net income	2,758	8,069	13,588	14,004
Reportable Legal Entities [Member] | Combined Subsidiary Guarantors [Member]
Revenues:
Rental income	14,217	14,039	28,333	28,039
Tenant reimbursements	1,231	1,232	2,474	2,463
Independent living facilities	789	730	1,582	1,411
Interest and other income	1,140	261	1,295	515
Total revenues	17,377	16,262	33,684	32,428
Expenses:
Depreciation and amortization	4,806	5,114	9,696	10,261
Interest expense	0	6	0	495
Loss on the extinguishment of debt	0		0	326
Property taxes	1,231	1,232	2,474	2,463
Independent living facilities	644	598	1,305	1,218
Impairment of real estate investment	890		890
General and administrative	62	0	62	66
Total expenses	7,633	6,950	14,427	14,829
Gain on disposition of other real estate investment	3,538		3,538
Income in Subsidiary	0	0	0	0
Net income	13,282	9,312	22,795	17,599
Elimination [Member]
Revenues:
Rental income	0	0	0	0
Tenant reimbursements	0	0	0	0
Independent living facilities	0	0	0	0
Interest and other income	0	0	0	0
Total revenues	0	0	0	0
Expenses:
Depreciation and amortization	0	0	0	0
Interest expense	0	0	0	0
Loss on the extinguishment of debt	0		0	0
Property taxes	0	0	0	0
Independent living facilities	0	0	0	0
Impairment of real estate investment	0		0
General and administrative	0	0	0	0
Total expenses	0	0	0	0
Gain on disposition of other real estate investment			0
Income in Subsidiary	(16,040)	(17,381)	(36,383)	(31,603)
Net income	$ (16,040)	$ (17,381)	$ (36,383)	$ (31,603)