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Organization - Narrative (Details)
$ in Millions
12 Months Ended
Dec. 31, 2018
USD ($)
real_estate_investment
unit
facility
bed
Real Estate Properties [Line Items]  
Number of living facilities | facility 197
Number of other real estate investments | real_estate_investment 2
Preferred equity investment | $ $ 5.7
Mortgage loan | $ 2.6
Mortgage Loan Receivable  
Real Estate Properties [Line Items]  
Mortgage loan | $ $ 12.3
Skilled Nursing, Assisted Living and Independent Living Facilities | Assets Leased to Ensign  
Real Estate Properties [Line Items]  
Number of living facilities | facility 194
Number of units available in living facilities | bed 19,086
Independent Living Facilities Owned and Operated by Company  
Real Estate Properties [Line Items]  
Number of living facilities | facility 3
Number of units available in living facilities | unit 264