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Concentration of Risk - Narrative (Details)
$ in Millions
1 Months Ended 9 Months Ended
Nov. 02, 2017
facility
Oct. 01, 2015
USD ($)
renewal_option
purchase-option
facility
Oct. 31, 2017
USD ($)
facility
Sep. 30, 2017
USD ($)
facility
state
bed
Concentration Risk [Line Items]        
Number of living facilities       174
Description of highest concentration of properties       The four states in which Ensign leases the highest concentration of properties are California, Texas, Utah and Arizona.
Skilled Nursing, Assisted Living and Independent Living Facilities | Assets Leased to Ensign        
Concentration Risk [Line Items]        
Number of living facilities       171
Number of units available in living facilities | bed       16,795
Liberty Healthcare Portfolio        
Concentration Risk [Line Items]        
Number of facilities acquired   14    
Acquisition consideration | $   $ 176.5    
Facilities subject to operating lease       16
Liberty Healthcare Portfolio | Pristine Master Lease        
Concentration Risk [Line Items]        
Leases period   15 years    
Leases renewal options | renewal_option   2    
Leases renewal term   5 years    
Leases purchase options | purchase-option   0    
Annual lease revenue per master lease terms | $       $ 18.6
Escalation factor for calculating revenues after year two       0.00%
Percentage change in the consumer price index       3.00%
Ensign        
Concentration Risk [Line Items]        
Number of states where Ensign leases the highest concentration of properties | state       4
Ensign | Skilled Nursing, Assisted Living and Independent Living Facilities | Assets Leased to Ensign        
Concentration Risk [Line Items]        
Number of living facilities       92
Number of units available in living facilities | bed       9,754
Subsequent Event        
Concentration Risk [Line Items]        
Number of facilities acquired     13  
Acquisition consideration | $     $ 135.0  
Subsequent Event | Pristine Amendment        
Concentration Risk [Line Items]        
Number of transitioned facilities 7