ACQUISITIONS - Narrative (Details) - USD ($) $ in Thousands			3 Months Ended			9 Months Ended
	Apr. 01, 2019	Feb. 01, 2019	Sep. 30, 2019	Jun. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Business Acquisition [Line Items]
Net service revenue			$ 494,631		$ 417,335	$ 1,454,955	$ 1,228,200
Operating income (loss)			46,844		39,888	135,919	118,721
Hospice
Business Acquisition [Line Items]
Net service revenue			162,400		103,400	452,600	302,100
Operating income (loss)			41,700		$ 28,300	105,800	$ 84,400
Hospice | Compassionate Care Hospice [Member]
Business Acquisition [Line Items]
Payments to acquire business		$ 327,900
Cash Acquired from Acquisition		6,700
Net service revenue			45,600			123,600
Business Combination, Integration Related Costs			3,400			13,400
Operating income (loss)			900			(4,200)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables		26,300
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense		800
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Other Current Asset		200
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment		200
Acquisition, other intangibles recorded		24,400
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Operating lease right of use assets		3,400
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets		55,300
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable		(15,900)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Payroll and Employee Benefits		(11,800)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accrued Expenses		(11,000)
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities		(400)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Operating Lease Liabilities		(3,400)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities		(42,500)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net		12,800
Goodwill recorded during period		$ 315,100
Hospice | RoseRock Healthcare [Member]
Business Acquisition [Line Items]
Payments to acquire business	$ 17,500
Net service revenue			2,200			4,700
Operating income (loss)			$ 300			$ 800
Goodwill recorded during period				$ 15,800
Trade Names [Member] | Hospice | Compassionate Care Hospice [Member]
Business Acquisition [Line Items]
Weighted-average amortization period						2 years
Trade Names [Member] | Hospice | RoseRock Healthcare [Member]
Business Acquisition [Line Items]
Acquisition, other intangibles recorded				1,000
Noncompete Agreements [Member] | Hospice | Compassionate Care Hospice [Member]
Business Acquisition [Line Items]
Weighted-average amortization period						2 years 3 months 18 days
Noncompete Agreements [Member] | Hospice | RoseRock Healthcare [Member]
Business Acquisition [Line Items]
Weighted-average amortization period						2 years 9 months 18 days
Acquisition, other intangibles recorded				$ 700