Real Estate Investments, Net - Narrative (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($) facility intangible_asset property unit lease	Mar. 31, 2017 USD ($)
Investment [Line Items]
Number of living facilities | facility	188
Number of facilities not leased | facility	3
Number of operating leases acquired | lease	3
Remaining lease term	80 years
Net proceeds from the sale of real estate	$ 13,004	$ 0
Gain on sale of real estate	$ 2,051	$ 0
Off-Market Favorable Lease
Investment [Line Items]
Number of identified intangible assets | intangible_asset	2
Ensign Master Leases
Investment [Line Items]
Facilities subject to operating lease | facility	92
Number of master leases | lease	8
Annualized revenues from master leases	$ 57,700
Escalation factor for calculating revenues after year two	0.00%
Percentage change in the consumer price index	2.50%
Various Other Operators
Investment [Line Items]
Facilities subject to operating lease | facility	96
Assisted Living Facilities | Idaho
Investment [Line Items]
Number of properties sold | property	3
Number of units in properties sold | unit	102
Aggregate carrying value of real estate sold	$ 10,900
Net proceeds from the sale of real estate	$ 13,000