Summarized Condensed Consolidating Information - Condensed Consolidating Income Statements (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenues:
Rental income									$ 140,073	$ 117,633	$ 93,126
Tenant reimbursements									11,924	10,254	7,846
Independent living facilities									3,379	3,228	2,970
Interest and other income									1,565	1,867	737
Total revenues	$ 40,361	$ 39,510	$ 38,969	$ 38,101	$ 36,597	$ 32,948	$ 32,829	$ 30,608	156,941	132,982	104,679
Expenses:
Depreciation and amortization									45,766	39,159	31,965
Interest expense									27,860	24,196	22,873
Loss on the extinguishment of debt									0	11,883	326
Property taxes									11,924	10,254	7,846
Acquisition costs									0	0	205
Independent living facilities									2,964	2,733	2,549
Impairment of real estate investment									0	890	0
Reserve for advances and deferred rent									0	10,414	0
General and administrative									12,555	11,117	9,297
Total expenses									101,069	110,646	75,061
Gain (loss) on sale of real estate									2,051	0	(265)
Gain on disposition of other real estate investment									0	3,538	0
Income in Subsidiary									0	0	0
Net income	$ 15,539	$ 14,510	$ 13,267	$ 14,607	$ 2,252	$ 11,311	$ 2,030	$ 10,281	57,923	25,874	29,353
Reportable Legal Entities | Parent Guarantor
Revenues:
Rental income									0	0	0
Tenant reimbursements									0	0	0
Independent living facilities									0	0	0
Interest and other income									0	0	0
Total revenues									0	0	0
Expenses:
Depreciation and amortization									0	0	0
Interest expense									0	0	0
Loss on the extinguishment of debt										0	0
Property taxes									0	0	0
Acquisition costs											0
Independent living facilities									0	0	0
Impairment of real estate investment										0
Reserve for advances and deferred rent										0
General and administrative									3,856	2,638	1,637
Total expenses									3,856	2,638	1,637
Gain (loss) on sale of real estate									0		0
Gain on disposition of other real estate investment										0
Income in Subsidiary									61,779	28,512	30,990
Net income									57,923	25,874	29,353
Reportable Legal Entities | Issuers
Revenues:
Rental income									81,560	60,464	36,855
Tenant reimbursements									7,173	5,493	2,978
Independent living facilities									0	0	0
Interest and other income									1,369	215	0
Total revenues									90,102	66,172	39,833
Expenses:
Depreciation and amortization									27,553	20,048	11,651
Interest expense									27,860	24,196	22,375
Loss on the extinguishment of debt										11,883	0
Property taxes									7,173	5,493	2,978
Acquisition costs											205
Independent living facilities									0	0	0
Impairment of real estate investment										0
Reserve for advances and deferred rent										10,414
General and administrative									8,623	8,417	7,594
Total expenses									71,209	80,451	44,803
Gain (loss) on sale of real estate									2,051		0
Gain on disposition of other real estate investment										0
Income in Subsidiary									40,835	42,791	35,960
Net income									61,779	28,512	30,990
Reportable Legal Entities | Combined Subsidiary Guarantors
Revenues:
Rental income									58,513	57,169	56,271
Tenant reimbursements									4,751	4,761	4,868
Independent living facilities									3,379	3,228	2,970
Interest and other income									196	1,652	737
Total revenues									66,839	66,810	64,846
Expenses:
Depreciation and amortization									18,213	19,111	20,314
Interest expense									0	0	498
Loss on the extinguishment of debt										0	326
Property taxes									4,751	4,761	4,868
Acquisition costs											0
Independent living facilities									2,964	2,733	2,549
Impairment of real estate investment										890
Reserve for advances and deferred rent										0
General and administrative									76	62	66
Total expenses									26,004	27,557	28,621
Gain (loss) on sale of real estate									0		(265)
Gain on disposition of other real estate investment										3,538
Income in Subsidiary									0	0	0
Net income									40,835	42,791	35,960
Elimination
Revenues:
Rental income									0	0	0
Tenant reimbursements									0	0	0
Independent living facilities									0	0	0
Interest and other income									0	0	0
Total revenues									0	0	0
Expenses:
Depreciation and amortization									0	0	0
Interest expense									0	0	0
Loss on the extinguishment of debt										0	0
Property taxes									0	0	0
Acquisition costs											0
Independent living facilities									0	0	0
Impairment of real estate investment										0
Reserve for advances and deferred rent										0
General and administrative									0	0	0
Total expenses									0	0	0
Gain (loss) on sale of real estate									0		0
Gain on disposition of other real estate investment										0
Income in Subsidiary									(102,614)	(71,303)	(66,950)
Net income									$ (102,614)	$ (71,303)	$ (66,950)