NATURE OF OPERATIONS, CONSOLIDATION AND PRESENTATION OF FINANCIAL STATEMENTS - Narrative (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2022 USD ($) care_center numberOfJointVentures state	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($) care_center numberOfJointVentures state	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Organization And Nature Of Operations [Line Items]
Number of states with facilities | state	37		37
Minimum percent ownership for controlling interest (percent)	50.00%		50.00%
Maximum ownership percentage for equity method investment (percent)	50.00%		50.00%
Equity method investments	$ 40,500		$ 40,500	$ 48,100
Maximum ownership percentage for cost method investment (percent)	20.00%		20.00%
Cost method investments	$ 20,000		$ 20,000	5,000
Proceeds from sale of equity method investment			0	0	$ 17,876
Cash and cash equivalents	40,540		40,540	42,694
Patient accounts receivable	296,785		296,785	274,961
Other current assets	26,415		26,415	25,598
Total current assets	388,961		388,961	356,684
Property and equipment	16,026		16,026	18,435
Operating lease right of use assets	102,856		102,856	101,257
Goodwill	1,287,399		1,287,399	1,196,090	932,700
Intangible Assets	101,167		101,167	111,190	74,200
Other assets	79,836		79,836	73,023
Total assets	1,976,245		1,976,245	1,856,968
Accounts payable	43,735		43,735	38,217
Payroll and employee benefits	125,387		125,387	141,001
Accrued expenses	137,390		137,390	150,836
Current portion of long-term obligations	15,496		15,496	12,995
Total current liabilities	355,529		355,529	374,282
Other long-term obligations	4,808		4,808	4,979
Current portion of operating lease liabilities	33,521		33,521	31,233
Total liabilities	869,672		869,672	880,645
Proceeds from sale of noncontrolling interest			5,817	0	0
Gain (Loss) on equity method investments			0	31,098	(2,980)
Impairment charge			3,009	0	$ 4,152
30% Interest Sold in Two Care Centers
Organization And Nature Of Operations [Line Items]
Proceeds from sale of noncontrolling interest		$ 3,900
Gain Related To Sale Of Noncontrolling Interest Net Of Tax		2,900
49% Interest Sold in Two Care Centers
Organization And Nature Of Operations [Line Items]
Proceeds from sale of noncontrolling interest	1,900
Gain Related To Sale Of Noncontrolling Interest Net Of Tax	1,400
Medalogix [Member]
Organization And Nature Of Operations [Line Items]
Gain (Loss) on equity method investments				31,100
Variable Interest Entity, Primary Beneficiary [Member]
Organization And Nature Of Operations [Line Items]
Cash and cash equivalents	15,600		15,600	3,100
Patient accounts receivable	6,100		6,100	2,400
Other current assets	600		600	100
Total current assets	22,300		22,300	5,600
Property and equipment	100		100	100
Operating lease right of use assets	100		100	0
Goodwill	8,500		8,500	0
Intangible Assets	400		400	0
Other assets	200		200	0
Total assets	31,600		31,600	5,700
Accounts payable	100		100	0
Payroll and employee benefits	500		500	300
Accrued expenses	5,800		5,800	3,400
Current portion of long-term obligations	200		200	800
Current portion of operating lease liabilities	100		100	0
Total liabilities	$ 6,700		$ 6,700	$ 4,500
Revenue Benchmark [Member] | Product Concentration Risk [Member] | Medicare Revenue [Member]
Organization And Nature Of Operations [Line Items]
Percent of net services revenue provided by Medicare			74.00%	75.00%	75.00%
Home Health [Member]
Organization And Nature Of Operations [Line Items]
Number of owned and operated care centers | care_center	347		347
Goodwill	$ 203,800		$ 203,800	$ 118,200	$ 90,400
Hospice [Member]
Organization And Nature Of Operations [Line Items]
Number of owned and operated care centers | care_center	164		164
Goodwill	$ 800,900		$ 800,900	800,900	799,200
Personal Care [Member]
Organization And Nature Of Operations [Line Items]
Number of owned and operated care centers | care_center	13		13
Goodwill	$ 43,100		$ 43,100	43,100	43,100
High Acuity Care [Member]
Organization And Nature Of Operations [Line Items]
Number Of Admitting Joint Ventures | numberOfJointVentures	8		8
Goodwill	$ 239,600		$ 239,600	233,900	0
High Acuity Care [Member] | Contessa Health
Organization And Nature Of Operations [Line Items]
Impairment charge		$ 3,000
Heritage Healthcare Innovation Fund LP [Member]
Organization And Nature Of Operations [Line Items]
Proceeds from sale of equity method investment					17,900
Gain (Loss) on equity method investments					$ (3,000)
ConnectRN [Member]
Organization And Nature Of Operations [Line Items]
Purchase of investment				$ 5,000
Home health benefit manager
Organization And Nature Of Operations [Line Items]
Purchase of investment			$ 15,000