Goodwill and Intangibles - Schedule of Changes in Recorded Goodwill by Reporting Unit (Details) $ in Thousands	6 Months Ended
Jun. 30, 2019 USD ($)
Goodwill [Roll Forward]
Balance as of December 31, 2018	$ 1,161,717
Acquisitions	18,739
Noncontrolling interests	5,359
Adjustments and disposals	2,412
Balance as of June 30, 2019	1,188,227
Intangible assets
Balance as of December 31, 2018	297,379
Acquisitions	6,731
Adjustments and disposals	(6,716)
Amortization	(678)
Balance as of June 30, 2019	296,716
Home health reporting unit
Goodwill [Roll Forward]
Balance as of December 31, 2018	822,602
Acquisitions	13,113
Noncontrolling interests	3,826
Adjustments and disposals	595
Balance as of June 30, 2019	840,136
Intangible assets
Balance as of December 31, 2018	215,382
Acquisitions	4,981
Adjustments and disposals	(7,719)
Amortization	(308)
Balance as of June 30, 2019	212,336
Hospice reporting unit
Goodwill [Roll Forward]
Balance as of December 31, 2018	118,583
Acquisitions	5,626
Noncontrolling interests	1,533
Adjustments and disposals	1,215
Balance as of June 30, 2019	126,957
Intangible assets
Balance as of December 31, 2018	37,010
Acquisitions	1,750
Adjustments and disposals	1,633
Amortization	(51)
Balance as of June 30, 2019	40,342
Home and community-based services reporting unit
Goodwill [Roll Forward]
Balance as of December 31, 2018	165,583
Acquisitions	0
Noncontrolling interests	0
Adjustments and disposals	495
Balance as of June 30, 2019	166,078
Intangible assets
Balance as of December 31, 2018	23,948
Amortization	(2)
Balance as of June 30, 2019	23,946
Facility-based reporting unit
Goodwill [Roll Forward]
Balance as of December 31, 2018	14,194
Acquisitions	0
Noncontrolling interests	0
Adjustments and disposals	0
Balance as of June 30, 2019	14,194
Intangible assets
Balance as of December 31, 2018	4,147
Amortization	(26)
Balance as of June 30, 2019	4,121
HCI reporting unit
Goodwill [Roll Forward]
Balance as of December 31, 2018	40,755
Acquisitions	0
Noncontrolling interests	0
Adjustments and disposals	107
Balance as of June 30, 2019	40,862
Intangible assets
Balance as of December 31, 2018	16,892
Adjustments and disposals	(630)
Amortization	(291)
Balance as of June 30, 2019	$ 15,971

Intangible Assets [Roll Forward]

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized, net of deferred tax adjustments.

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Amount of increase (decrease) in carrying value of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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Net Increase or Decrease in balance of noncontrolling interest in the subsidiary during the reporting period.

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