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Business Combinations - Textual (Details) $ in Millions	6 Months Ended
	Jun. 30, 2017 USD ($)	May 01, 2017 location	Apr. 08, 2017 bed	Apr. 01, 2017 bed	Feb. 01, 2017 location
Inpatient Rehabilitation Segment [Member] | Memorial Hospital at Gulfport [Member]
Business Acquisition [Line Items]
Interest acquired in business acquisition (percent)				80.00%
Number of beds in facility acquired | bed				33
Inpatient Rehabilitation Segment [Member] | Mount Carmel West [Member]
Business Acquisition [Line Items]
Interest acquired in business acquisition (percent)			80.00%
Number of beds in facility acquired | bed			60
Inpatient Rehabilitation Segment [Member] | Gulfport and Mount Carmel [Member]
Business Acquisition [Line Items]
Goodwill deductible for federal income tax purposes | $	$ 0.0
Inpatient Rehabilitation Segment [Member] | Gulfport and Mount Carmel [Member] | Trade Names [Member]
Business Acquisition [Line Items]
Acquired intangible asset useful lives	20 years
Inpatient Rehabilitation Segment [Member] | Gulfport and Mount Carmel [Member] | Certificate of Need [Member]
Business Acquisition [Line Items]
Acquired intangible asset useful lives	20 years
Home Health and Hospice Segment [Member] | Celtic, Community, and Bio Care [Member]
Business Acquisition [Line Items]
Goodwill deductible for federal income tax purposes | $	$ 15.0
Home Health and Hospice Segment [Member] | Celtic, Community, and Bio Care [Member] | Noncompete Agreements [Member]
Business Acquisition [Line Items]
Acquired intangible asset useful lives	5 years
Home Health and Hospice Segment [Member] | Celtic, Community, and Bio Care [Member] | Trade Names [Member]
Business Acquisition [Line Items]
Acquired intangible asset useful lives	1 year
Home Health and Hospice Segment [Member] | Celtic, Community, and Bio Care [Member] | Certificate of Need [Member]
Business Acquisition [Line Items]
Acquired intangible asset useful lives	10 years
Home Health and Hospice Segment [Member] | Celtic, Community, and Bio Care [Member] | License [Member]
Business Acquisition [Line Items]
Acquired intangible asset useful lives	10 years
Home Health and Hospice Segment [Member] | Celtic Healthcare of Maryland, Inc. (Celtic) [Member]
Business Acquisition [Line Items]
Number of Locations of an Acquired Entity					2
Home health [Member] | Home Health and Hospice Segment [Member] | Community Health Services, Inc. (Community) [Member]
Business Acquisition [Line Items]
Number of Locations of an Acquired Entity					2
Home health [Member] | Home Health and Hospice Segment [Member] | Bio Care Home Health Services and Kinsman Enterprises [Member]
Business Acquisition [Line Items]
Number of Locations of an Acquired Entity		2
Minimum [Member] | Inpatient Rehabilitation Segment [Member] | Gulfport and Mount Carmel [Member] | Noncompete Agreements [Member]
Business Acquisition [Line Items]
Acquired intangible asset useful lives	2 years
Maximum [Member] | Inpatient Rehabilitation Segment [Member] | Gulfport and Mount Carmel [Member] | Noncompete Agreements [Member]
Business Acquisition [Line Items]
Acquired intangible asset useful lives	3 years

X

- Definition

Number of hospital beds acquired as part of a facility acquisition.

+ References

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- Definition

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+ References

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- Definition

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Topic 805
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-Paragraph 1
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