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Segment Reporting - Textuals (Details)
12 Months Ended
Dec. 31, 2019
location
segment
state
hospital
facility
facilities
Segment Reporting Information [Line Items]  
Number of operating segments | segment 2
Number of states in which entity operates | state 37
Inpatient Rehabilitation  
Segment Reporting Information [Line Items]  
Number of states in which entity operates | state 33
Number of inpatient rehabilitation hospitals | facilities 133
Number of solely owned inpatient rehabilitation hospitals | hospital 86
Number of jointly owned inpatient rehabilitation hospitals | hospital 47
Number of inpatient rehabilitation units under management contracts | facility 4
Home health  
Segment Reporting Information [Line Items]  
Number of home health locations 245
Hospice  
Segment Reporting Information [Line Items]  
Number of hospice locations 83
Home Health and Hospice Segment  
Segment Reporting Information [Line Items]  
Number of states in which entity operates | state 31
Number of joint venture agencies accounted for using the equity method | facility 2
Number of solely owned hospital based home health and hospice locations 320
Number of jointly owned hospital based home health and hospice locations 8
Minimum | Inpatient Rehabilitation  
Segment Reporting Information [Line Items]  
Joint venture ownership percentage 50.00%
Minimum | Home Health and Hospice Segment  
Segment Reporting Information [Line Items]  
Joint venture ownership percentage 50.00%
Maximum | Inpatient Rehabilitation  
Segment Reporting Information [Line Items]  
Joint venture ownership percentage 97.50%
Maximum | Home Health and Hospice Segment  
Segment Reporting Information [Line Items]  
Joint venture ownership percentage 81.00%