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Leases - Operating Leases - Additional Information (Details) - Facility
12 Months Ended
Jan. 01, 2021
Dec. 31, 2020
Operating Leased Assets [Line Items]    
Number of skilled nursing facilities under non-cancelable operating leases   9
Subsequent Event    
Operating Leased Assets [Line Items]    
Operating lease number of operating previously subleased, skilled nursing facilities as portfolio stabilization measure 1