ACQUISITIONS - Narrative (Details)						3 Months Ended			9 Months Ended
	Oct. 01, 2020 USD ($)	Jun. 01, 2020 USD ($) care_center	Apr. 18, 2020 USD ($)	Mar. 01, 2020 USD ($)	Jan. 01, 2020 USD ($)	Sep. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)
Business Acquisition [Line Items]
Net service revenue						$ 544,070,000		$ 494,631,000	$ 1,520,814,000	$ 1,454,955,000
Operating Income (Loss)						63,313,000		46,844,000	157,115,000	135,919,000
Depreciation and amortization						8,283,000		4,366,000	19,955,000	12,440,000
Hospice [Member]
Business Acquisition [Line Items]
Net service revenue						199,700,000		162,400,000	546,200,000	452,600,000
Operating Income (Loss)						48,900,000		41,700,000	132,900,000	105,800,000
Depreciation and amortization						600,000		400,000	1,700,000	1,200,000
Hospice [Member] | Asana Hospice [Member]
Business Acquisition [Line Items]
Payments to acquire business					$ 66,300,000
Cash Acquired from Acquisition					$ 700,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables						4,700,000			4,700,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment						200,000			200,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Operating lease right of use assets						900,000			900,000
Acquisition, other intangibles recorded						5,600,000			5,600,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets						11,400,000			11,400,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable						(3,200,000)			(3,200,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Payroll and Employee Benefits						(1,500,000)			(1,500,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accrued Expenses						(400,000)			(400,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Operating Lease Liabilities						(800,000)			(800,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities						(5,900,000)			(5,900,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net						5,500,000			5,500,000
Goodwill recorded during period									60,100,000
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net						65,600,000			65,600,000
Net service revenue						4,600,000			19,000,000.0
Operating Income (Loss)						(1,000,000)			(3,200,000)
Business Combination, Integration Related Costs						300,000			1,800,000
Depreciation and amortization						700,000			2,100,000
Business Acquisition Working Capital Adjustment							$ 700,000
Hospice [Member] | Asana Hospice [Member] | Medicare license [Member]
Business Acquisition [Line Items]
Acquisition, other intangibles recorded						2,000,000.0			2,000,000.0
Hospice [Member] | AseraCare Hospice [Member]
Business Acquisition [Line Items]
Payments to acquire business		$ 230,400,000
Acquisition, number of care centers acquired | care_center		44
Payments related to tax asset and working capital		$ 32,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables						14,900,000			14,900,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense						1,000,000.0			1,000,000.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment						600,000			600,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Operating lease right of use assets						5,900,000			5,900,000
Acquisition, other intangibles recorded						24,300,000			24,300,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets						200,000			200,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets						46,900,000			46,900,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable						(5,800,000)			(5,800,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Payroll and Employee Benefits						(6,400,000)			(6,400,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accrued Expenses						(8,400,000)			(8,400,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Operating Lease Liabilities						(5,400,000)			(5,400,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities						(26,000,000.0)			(26,000,000.0)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net						20,900,000			20,900,000
Goodwill recorded during period									208,700,000
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net						229,600,000			229,600,000
Net service revenue						28,200,000			37,400,000
Operating Income (Loss)						(3,800,000)			(6,800,000)
Business Combination, Integration Related Costs						3,200,000			6,500,000
Depreciation and amortization						2,700,000			2,900,000
Business Acquisition Closing Payment Adjustment	$ 800,000
Hospice [Member] | AseraCare Hospice [Member] | Maximum [Member]
Business Acquisition [Line Items]
Business Acquisition Closing Payment Adjustment		$ 1,000,000.0
Hospice [Member] | AseraCare Hospice [Member] | Medicare license [Member]
Business Acquisition [Line Items]
Acquisition, other intangibles recorded						9,400,000			9,400,000
Home Health [Member]
Business Acquisition [Line Items]
Net service revenue						326,000,000.0		311,500,000	919,800,000	940,200,000
Operating Income (Loss)						68,800,000		46,100,000	164,100,000	153,800,000
Depreciation and amortization						1,000,000.0		$ 1,000,000.0	2,900,000	$ 3,100,000
WASHINGTON | Home Health [Member]
Business Acquisition [Line Items]
Payments to acquire business				$ 3,000,000.0
Goodwill recorded during period									2,800,000
WASHINGTON | Home Health [Member] | Certificate of Need [Member]
Business Acquisition [Line Items]
Acquisition, other intangibles recorded						200,000			200,000
KENTUCKY | Home Health [Member]
Business Acquisition [Line Items]
Payments to acquire business			$ 700,000
Goodwill recorded during period									500,000
KENTUCKY | Home Health [Member] | Certificate of Need [Member]
Business Acquisition [Line Items]
Acquisition, other intangibles recorded						200,000			200,000
Trade Names [Member] | Hospice [Member] | AseraCare Hospice [Member]
Business Acquisition [Line Items]
Acquisition, other intangibles recorded						5,700,000			$ 5,700,000
Noncompete Agreements [Member] | Hospice [Member] | Asana Hospice [Member]
Business Acquisition [Line Items]
Weighted-average amortization period									2 years
Acquisition, other intangibles recorded						2,300,000			$ 2,300,000
Noncompete Agreements [Member] | Hospice [Member] | AseraCare Hospice [Member]
Business Acquisition [Line Items]
Weighted-average amortization period									1 year 8 months 12 days
Acquisition, other intangibles recorded						9,200,000			$ 9,200,000
Acquired Names of Business [Member] | Hospice [Member] | Asana Hospice [Member]
Business Acquisition [Line Items]
Weighted-average amortization period									2 years
Acquisition, other intangibles recorded						$ 1,300,000			$ 1,300,000
Acquired Names of Business [Member] | Hospice [Member] | AseraCare Hospice [Member]
Business Acquisition [Line Items]
Weighted-average amortization period									2 years