Real Estate Investments - Owned Properties (Details) - Real Estate Investment $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($) item property state $ / item
Real Estate [Line Items]
Gross Investment | $	$ 1,438,177
Percentage of Investment	100.00%
Number of properties | property	158
Number of states | state	27
Number of operators	29
Operating leases
Number of ways to compute annual rent increases	4
Minimum
Operating leases
Initial lease term	10 years
Specified annual increase over the prior year's rent (as a percent)	2.00%
Maximum
Operating leases
Initial lease term	15 years
Specified annual increase over the prior year's rent (as a percent)	2.50%
SNF Beds
Real Estate [Line Items]
Number of beds/units	6,401
ALF Units
Real Estate [Line Items]
Number of beds/units	6,376
ALF
Real Estate [Line Items]
Gross Investment | $	$ 876,319
Percentage of Investment	60.90%
Number of properties | property	107
Investment per Bed/Unit | $ / item	142.17
ALF | ALF Units
Real Estate [Line Items]
Number of beds/units	6,164
SNF
Real Estate [Line Items]
Gross Investment | $	$ 543,814
Percentage of Investment	37.80%
Number of properties | property	50
Investment per Bed/Unit | $ / item	83.73
SNF | SNF Beds
Real Estate [Line Items]
Number of beds/units	6,283
SNF | ALF Units
Real Estate [Line Items]
Number of beds/units	212
Properties under Development
Real Estate [Line Items]
Gross Investment | $	$ 6,684
Percentage of Investment	0.50%
Properties under Development | Combination ALF and MC community | Oregon | Developments
Real Estate [Line Items]
Number of beds/units under development	90
Other
Real Estate [Line Items]
Gross Investment | $	$ 11,360
Percentage of Investment	0.80%
Number of properties | property	1
Number of parcels of land	3
Other | SNF Beds
Real Estate [Line Items]
Number of beds/units	118
Hospital
Real Estate [Line Items]
Number of properties | property	1