Summarized Condensed Consolidating Information - Condensed Consolidating Income Statements (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Revenues:
Rental income	$ 35,332	$ 29,404	$ 103,856	$ 85,254
Tenant reimbursements	2,990	2,543	8,974	7,253
Independent living facilities	871	825	2,515	2,407
Interest and other income	317	176	1,235	1,471
Total revenues	39,510	32,948	116,580	96,385
Expenses:
Depreciation and amortization	11,351	9,745	34,227	28,156
Interest expense	6,805	5,592	21,182	17,690
Loss on the extinguishment of debt	0	0	0	11,883
Property taxes	2,990	2,543	8,974	7,253
Independent living facilities	766	698	2,226	2,003
Impairment of real estate investment	0	0	0	890
General and administrative	3,088	3,059	9,638	8,426
Total expenses	25,000	21,637	76,247	76,301
Gain on sale of real estate	0	0	2,051	0
Gain on disposition of other real estate investment	0	0	0	3,538
Income in Subsidiary	0	0	0	0
Net income	14,510	11,311	42,384	23,622	$ 25,874
Reportable Legal Entities | Parent Guarantor
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
Property taxes	0	0	0	0
Independent living facilities	0	0	0	0
Impairment of real estate investment				0
General and administrative	987	671	2,822	1,948
Total expenses	987	671	2,822	1,948
Gain on sale of real estate			0
Gain on disposition of other real estate investment				0
Income in Subsidiary	15,497	11,982	45,206	25,570
Net income	14,510	11,311	42,384	23,622
Reportable Legal Entities | Issuers
Revenues:
Rental income	20,554	14,987	60,122	42,503
Tenant reimbursements	1,804	1,341	5,360	3,577
Independent living facilities	0	0	0	0
Interest and other income	317	0	1,039	0
Total revenues	22,675	16,328	66,521	46,080
Expenses:
Depreciation and amortization	6,833	5,014	20,488	13,730
Interest expense	6,805	5,592	21,182	17,690
Loss on the extinguishment of debt				11,883
Property taxes	1,804	1,341	5,360	3,577
Independent living facilities	0	0	0	0
Impairment of real estate investment				0
General and administrative	2,101	2,388	6,740	6,416
Total expenses	17,543	14,335	53,770	53,296
Gain on sale of real estate			2,051
Gain on disposition of other real estate investment				0
Income in Subsidiary	10,365	9,989	30,404	32,786
Net income	15,497	11,982	45,206	25,570
Reportable Legal Entities | Combined Subsidiary Guarantors
Revenues:
Rental income	14,778	14,417	43,734	42,751
Tenant reimbursements	1,186	1,202	3,614	3,676
Independent living facilities	871	825	2,515	2,407
Interest and other income	0	176	196	1,471
Total revenues	16,835	16,620	50,059	50,305
Expenses:
Depreciation and amortization	4,518	4,731	13,739	14,426
Interest expense	0	0	0	0
Loss on the extinguishment of debt				0
Property taxes	1,186	1,202	3,614	3,676
Independent living facilities	766	698	2,226	2,003
Impairment of real estate investment				890
General and administrative	0	0	76	62
Total expenses	6,470	6,631	19,655	21,057
Gain on sale of real estate			0
Gain on disposition of other real estate investment				3,538
Income in Subsidiary	0	0	0	0
Net income	10,365	9,989	30,404	32,786
Elimination
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
Property taxes	0	0	0	0
Independent living facilities	0	0	0	0
Impairment of real estate investment				0
General and administrative	0	0	0	0
Total expenses	0	0	0	0
Gain on sale of real estate			0
Gain on disposition of other real estate investment				0
Income in Subsidiary	(25,862)	(21,971)	(75,610)	(58,356)
Net income	$ (25,862)	$ (21,971)	$ (75,610)	$ (58,356)