SEGMENT INFORMATION - Operating Income of Reportable Segments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Merger-related expenses	$ 36,672	$ 0	$ 0
Net service revenue	2,236,382	2,223,199	2,214,112
Other operating income	0	0	13,300
Cost of service, inclusive of depreciation	1,245,509	1,260,425	1,233,356
General and administrative expenses	816,800	754,100	711,200
Depreciation and amortization	17,747	24,935	30,901
Investment impairment	0	3,009	0
Total operating expenses	2,079,988	2,042,427	1,975,497
Operating income (loss)	156,394	180,772	251,915
Home Health [Member] | Reportable Business Segments [Member]
Segment Reporting Information [Line Items]
Net service revenue	1,403,600	1,361,700	1,353,800
Other operating income			7,300
Cost of service, inclusive of depreciation	801,100	773,900	756,600
General and administrative expenses	363,500	351,100	328,500
Depreciation and amortization	6,000	4,000	4,300
Investment impairment		0
Total operating expenses	1,170,600	1,129,000	1,089,400
Operating income (loss)	233,000	232,700	271,700
Hospice [Member] | Reportable Business Segments [Member]
Segment Reporting Information [Line Items]
Net service revenue	798,800	787,800	791,800
Other operating income			6,000
Cost of service, inclusive of depreciation	412,200	426,500	425,200
General and administrative expenses	193,100	203,300	198,400
Depreciation and amortization	3,000	2,300	2,700
Investment impairment		0
Total operating expenses	608,300	632,100	626,300
Operating income (loss)	190,500	155,700	171,500
Personal Care [Member] | Reportable Business Segments [Member]
Segment Reporting Information [Line Items]
Net service revenue	15,000	61,400	65,000
Other operating income			0
Cost of service, inclusive of depreciation	11,100	46,700	49,100
General and administrative expenses	2,300	9,200	11,200
Depreciation and amortization	0	100	200
Investment impairment		0
Total operating expenses	13,400	56,000	60,500
Operating income (loss)	1,600	5,400	4,500
High Acuity Care [Member] | Reportable Business Segments [Member]
Segment Reporting Information [Line Items]
Net service revenue	19,000	12,300	3,500
Other operating income			0
Cost of service, inclusive of depreciation	21,100	13,300	2,500
General and administrative expenses	20,400	19,700	6,600
Depreciation and amortization	3,100	3,300	1,300
Investment impairment		3,000
Total operating expenses	44,600	39,300	10,400
Operating income (loss)	(25,600)	(27,000)	(6,900)
Other [Member] | Other Segment [Member]
Segment Reporting Information [Line Items]
Net service revenue	0	0	0
Other operating income			0
Cost of service, inclusive of depreciation	0	0	0
General and administrative expenses	237,500	170,800	166,500
Depreciation and amortization	5,600	15,200	22,400
Investment impairment		0
Total operating expenses	243,100	186,000	188,900
Operating income (loss)	$ (243,100)	$ (186,000)	$ (188,900)