Operating Leases - Other Leases (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2017 USD ($) contract	Dec. 31, 2016 USD ($)
Operating leases
Straight-line rent receivables, net	$ 2,953	$ 3,296
National and regional operators and other unaffiliated tenants
Operating leases
Number of leases with variable lease payments | contract	1
National and regional operators and other unaffiliated tenants | Minimum
Operating leases
Renewal term	5 years
HCR ManorCare, Inc. | HCRMC Master Lease
Operating leases
Straight-line rent receivables, net	$ 3,000	$ 3,300
HCR ManorCare, Inc. | HCRMC Master Lease | Minimum
Operating leases
Renewal term	5 years