Major Operators (Details)	6 Months Ended
	Jun. 30, 2019 item property
Major Operators
Number of major operators	2
Prestige Healthcare | SNF
Major Operators
Number of beds | property	24
Number of beds/units	3,010
Prestige Healthcare | ALF
Major Operators
Number of beds/units	93
Senior Lifestyle Corporation | ALF
Major Operators
Number of beds | property	23
Number of beds/units	1,457
Operator Concentration Risk | SNF
Major Operators
Number of beds | property	24
Number of beds/units	3,010
Operator Concentration Risk | ALF
Major Operators
Number of beds | property	23
Number of beds/units	1,550
Total Revenue | Operator Concentration Risk
Major Operators
Concentration risk (as a percent)	29.80%
Total Revenue | Operator Concentration Risk | Prestige Healthcare
Major Operators
Concentration risk (as a percent)	18.10%
Total Revenue | Operator Concentration Risk | Senior Lifestyle Corporation
Major Operators
Concentration risk (as a percent)	11.70%
Total Assets | Operator Concentration Risk
Major Operators
Concentration risk (as a percent)	27.80%
Total Assets | Credit Concentration Risk | Prestige Healthcare
Major Operators
Concentration risk (as a percent)	17.40%
Total Assets | Credit Concentration Risk | Senior Lifestyle Corporation
Major Operators
Concentration risk (as a percent)	10.40%