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Business Combinations - Textual (Details)
$ in Millions
2 Months Ended 9 Months Ended
Jun. 30, 2018
Sep. 30, 2018
USD ($)
Sep. 05, 2018
bed
Jun. 01, 2018
location
Jan. 01, 2018
location
Inpatient Rehabilitation Segment [Member] | Murrells Inlet [Member]          
Business Acquisition [Line Items]          
Business Acquisition, Percentage of Voting Interests Acquired     62.00%    
Number of Beds Acquired | bed     29    
Number of Certificate of Need Beds Acquired | bed     60    
Number of De Novo Beds | bed     46    
Business Acquisition, Goodwill, Expected Tax Deductible Amount | $   $ 0.0      
Home Health and Hospice Segment [Member] | Camellia Healthcare [Member]          
Business Acquisition [Line Items]          
Business Acquisition, Goodwill, Expected Tax Deductible Amount | $   97.0      
Hospice [Member] | Home Health and Hospice Segment [Member] | Golden Age Hospice, Inc. [Member]          
Business Acquisition [Line Items]          
Number of Locations of an Acquired Entity | location         1
Hospice [Member] | Home Health and Hospice Segment [Member] | Medical Services of America [Member]          
Business Acquisition [Line Items]          
Number of Locations of an Acquired Entity | location       1  
Hospice [Member] | Home Health and Hospice Segment [Member] | Golden Age and MSA [Member]          
Business Acquisition [Line Items]          
Business Acquisition, Goodwill, Expected Tax Deductible Amount | $   $ 5.1      
Noncompete agreements [Member] | Inpatient Rehabilitation Segment [Member] | Murrells Inlet [Member]          
Business Acquisition [Line Items]          
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life   3 years      
Noncompete agreements [Member] | Home Health and Hospice Segment [Member] | Camellia Healthcare [Member]          
Business Acquisition [Line Items]          
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life 5 years        
Noncompete agreements [Member] | Hospice [Member] | Home Health and Hospice Segment [Member] | Golden Age and MSA [Member]          
Business Acquisition [Line Items]          
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life   5 years      
Trade name [Member] | Inpatient Rehabilitation Segment [Member] | Murrells Inlet [Member]          
Business Acquisition [Line Items]          
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life   20 years      
Trade name [Member] | Home Health and Hospice Segment [Member] | Camellia Healthcare [Member]          
Business Acquisition [Line Items]          
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life 1 year        
Certificates of need [Member] | Inpatient Rehabilitation Segment [Member] | Murrells Inlet [Member]          
Business Acquisition [Line Items]          
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life   20 years      
Certificates of need [Member] | Home Health and Hospice Segment [Member] | Camellia Healthcare [Member]          
Business Acquisition [Line Items]          
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life 10 years        
Licenses [Member] | Home Health and Hospice Segment [Member] | Camellia Healthcare [Member]          
Business Acquisition [Line Items]          
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life 10 years        
Licenses [Member] | Hospice [Member] | Home Health and Hospice Segment [Member] | Golden Age and MSA [Member]          
Business Acquisition [Line Items]          
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life   10 years