SEGMENT INFORMATION - Operating Income of Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Segment Reporting Information [Line Items]
Net service revenue	$ 544,070	$ 494,631	$ 1,520,814	$ 1,454,955
Other operating income	4,812	0	27,592	0
Cost of service, excluding depreciation and amortization	297,668	288,708	878,633	854,734
General and administrative expenses	179,700	154,700	492,800	451,900
Depreciation and amortization	8,283	4,366	19,955	12,440
Operating expenses	485,569	447,787	1,391,291	1,319,036
Operating income (loss)	63,313	46,844	157,115	135,919
Home Health [Member]
Segment Reporting Information [Line Items]
Net service revenue	326,000	311,500	919,800	940,200
Other operating income	2,600		17,700
Cost of service, excluding depreciation and amortization	180,000	188,900	543,800	562,400
General and administrative expenses	78,800	75,500	226,700	220,900
Depreciation and amortization	1,000	1,000	2,900	3,100
Operating expenses	259,800	265,400	773,400	786,400
Operating income (loss)	68,800	46,100	164,100	153,800
Hospice [Member]
Segment Reporting Information [Line Items]
Net service revenue	199,700	162,400	546,200	452,600
Other operating income	1,700		8,900
Cost of service, excluding depreciation and amortization	104,100	84,500	293,100	245,900
General and administrative expenses	47,800	35,800	127,400	99,700
Depreciation and amortization	600	400	1,700	1,200
Operating expenses	152,500	120,700	422,200	346,800
Operating income (loss)	48,900	41,700	132,900	105,800
Personal Care
Segment Reporting Information [Line Items]
Net service revenue	18,400	20,700	54,800	62,100
Other operating income	500		1,000
Cost of service, excluding depreciation and amortization	13,500	15,300	41,700	46,400
General and administrative expenses	3,200	3,000	9,500	9,300
Depreciation and amortization	0	100	100	200
Operating expenses	16,700	18,400	51,300	55,900
Operating income (loss)	2,200	2,300	4,500	6,200
Other
Segment Reporting Information [Line Items]
Net service revenue	0	0	0	0
Other operating income	0		0
Cost of service, excluding depreciation and amortization	0	0	0	0
General and administrative expenses	49,900	40,400	129,200	122,000
Depreciation and amortization	6,700	2,900	15,200	7,900
Operating expenses	56,600	43,300	144,400	129,900
Operating income (loss)	$ (56,600)	$ (43,300)	$ (144,400)	$ (129,900)