Subsequent Events - Narrative (Details) $ in Thousands		3 Months Ended
	May 01, 2018 USD ($) facility	Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Subsequent Event [Line Items]
Aggregate annual base rent due		$ 4,275
Other Tenant Receivables
Subsequent Event [Line Items]
Reserve for advances and deferred rent			$ 6,300
Accrued Property Taxes and Franchise Permit Fees
Subsequent Event [Line Items]
Reserve for advances and deferred rent			3,300
Unpaid Base Rents
Subsequent Event [Line Items]
Reserve for advances and deferred rent			$ 800
Subsequent Event | Trio Healthcare Inc | Pristine Amendment
Subsequent Event [Line Items]
Number of transitioned facilities | facility	7
Lease term (in years)	15 years
Subsequent Event | Hillstone Healthcare Inc | Pristine Amendment
Subsequent Event [Line Items]
Number of transitioned facilities | facility	2
Lease term (in years)	12 years
Subsequent Event | Trio Healthcare Inc and Hillstone Healthcare Inc | Pristine Amendment
Subsequent Event [Line Items]
Aggregate annual base rent due	$ 10,000