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Concentration of Risk - Narrative (Details)
12 Months Ended
Dec. 31, 2019
state
facility
bed
Dec. 31, 2018
Dec. 31, 2017
Concentration Risk [Line Items]      
Number of living facilities 217    
Skilled Nursing, Assisted Living and Independent Living Facilities | Assets Leased to Independent Operators      
Concentration Risk [Line Items]      
Number of living facilities 216    
Number of operational beds and units in facilities | bed 21,963    
Ensign      
Concentration Risk [Line Items]      
Description of highest concentration of properties The four states in which Ensign leases the highest concentration of properties are California, Texas, Utah and Arizona.    
Number of states where Ensign leases the highest concentration of properties | state 4    
Ensign | Customer Concentration Risk | Revenue, exclusive of operating expense reimbursements      
Concentration Risk [Line Items]      
Concentration risk (percent) 38.00% 42.00% 49.00%
PMG | Customer Concentration Risk | Revenue, exclusive of operating expense reimbursements      
Concentration Risk [Line Items]      
Concentration risk (percent) 15.00% 8.00% 8.00%
Ensign | Skilled Nursing, Assisted Living and Independent Living Facilities | Assets Leased to Independent Operators      
Concentration Risk [Line Items]      
Number of living facilities 85    
Number of operational beds and units in facilities | bed 8,908    
PMG | Skilled Nursing, Assisted Living and Independent Living Facilities | Assets Leased to Independent Operators      
Concentration Risk [Line Items]      
Number of living facilities 15    
Number of operational beds and units in facilities | bed 2,145