Segment Information - Additional Information (Details)	3 Months Ended
Mar. 31, 2019 segment
Segment Reporting Information [Line Items]
Number of reportable segments	5
Services segment revenue \| Home health services
Segment Reporting Information [Line Items]
Percentage of net service revenue	71.30%
Services segment revenue \| Hospice services
Segment Reporting Information [Line Items]
Percentage of net service revenue	92.40%
Services segment revenue \| Home and community-based services
Segment Reporting Information [Line Items]
Percentage of net service revenue	74.90%
Services segment revenue \| Facility-based services
Segment Reporting Information [Line Items]
Percentage of net service revenue	57.40%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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