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Business Combinations - Textual (Details) - Inpatient Rehabilitation
Sep. 30, 2020
USD ($)
May 31, 2020
bed
Jan. 31, 2020
bed
Portercare Adventist and Premier Health Partners      
Business Acquisition [Line Items]      
Goodwill expected to be tax-deductible amount | $ $ 0    
Corporate Joint Venture | Portercare Adventist      
Business Acquisition [Line Items]      
Business acquisition percentage of voting interests acquired     68.00%
Number of beds acquired     13
Number of beds contributed     40
Number of beds expanded     20
Corporate Joint Venture | Premier Health Partners      
Business Acquisition [Line Items]      
Business acquisition percentage of voting interests acquired   51.00%  
Number of beds acquired   45  
Number of de novo beds   60