SEGMENT INFORMATION - Operating Income of Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Segment Reporting Information [Line Items]
Net service revenue	$ 494,631	$ 417,335	$ 1,454,955	$ 1,228,200
Cost of service, excluding depreciation and amortization	288,708	249,739	854,734	730,612
General and administrative expenses	154,700	124,500	451,900	369,000
Depreciation and amortization	4,366	3,164	12,440	9,882
Operating expenses	447,787	377,447	1,319,036	1,109,479
Operating income	46,844	39,888	135,919	118,721
Home Health
Segment Reporting Information [Line Items]
Net service revenue	311,500	294,900	940,200	870,500
Cost of service, excluding depreciation and amortization	188,900	181,800	562,400	532,700
General and administrative expenses	75,500	68,800	220,900	205,200
Depreciation and amortization	1,000	800	3,100	2,400
Operating expenses	265,400	251,400	786,400	740,300
Operating income	46,100	43,500	153,800	130,200
Hospice
Segment Reporting Information [Line Items]
Net service revenue	162,400	103,400	452,600	302,100
Cost of service, excluding depreciation and amortization	84,500	53,400	245,900	155,200
General and administrative expenses	35,800	21,400	99,700	61,700
Depreciation and amortization	400	300	1,200	800
Operating expenses	120,700	75,100	346,800	217,700
Operating income	41,700	28,300	105,800	84,400
Personal Care
Segment Reporting Information [Line Items]
Net service revenue	20,700	19,000	62,100	55,600
Cost of service, excluding depreciation and amortization	15,300	14,500	46,400	42,700
General and administrative expenses	3,000	3,000	9,300	9,500
Depreciation and amortization	100	100	200	200
Operating expenses	18,400	17,600	55,900	52,400
Operating income	2,300	1,400	6,200	3,200
Other
Segment Reporting Information [Line Items]
Net service revenue	0	0	0	0
Cost of service, excluding depreciation and amortization	0	0	0	0
General and administrative expenses	40,400	31,300	122,000	92,600
Depreciation and amortization	2,900	2,000	7,900	6,500
Operating expenses	43,300	33,300	129,900	99,100
Operating income	$ (43,300)	$ (33,300)	$ (129,900)	$ (99,100)