Acquisitions (Details) - SWH Acquisition - USD ($) $ in Millions	Oct. 31, 2017	Sep. 30, 2018
Acquisitions
Amount of consideration paid in cash	$ 400.0
Incentive payment for Medicare & Medicaid Services Star Rating	$ 10.0
Increase (decrease) in goodwill due to measurement period adjustment		$ 8.7

Amount of fresh-start adjustment to goodwill.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6918054&loc=SL2890621-112765

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 55
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 45
-Paragraph 20
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=114872137&loc=SL2890583-112764

Name:	us-gaap_FreshStartAdjustmentIncreaseDecreaseGoodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant