INVESTMENTS (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Variable Interest Entity [Line Items]
Minimum percent ownership for controlling interest (percent)			50.00%
Maximum ownership percentage for equity method investment (percent)			50.00%
Equity method investments	$ 40,500		$ 46,100	$ 40,500
Maximum ownership percentage for cost method investment (percent)			20.00%
Cost method investments	20,000		$ 20,000	20,000
Proceeds from sale of noncontrolling interest			0	5,817	$ 0
Gain (Loss) on equity method investments			0	0	31,098
Investment impairment			0	3,009	0
Cash and cash equivalents	40,540		126,450	40,540
Patient accounts receivable	296,785		313,373	296,785
Other current assets	26,415		30,060	26,415
Total current assets	388,961		496,935	388,961
Property and equipment	16,026		41,845	16,026
Operating lease right of use assets	102,856		88,939	102,856
Goodwill	1,287,399		1,244,679	1,287,399	1,196,100
Intangible assets	101,167		102,675	101,167	111,200
Other assets	79,836		85,097	79,836
Total assets	1,976,245		2,060,170	1,976,245
Accounts payable	43,735		28,237	43,735
Payroll and employee benefits	125,387		136,835	125,387
Accrued expenses	137,390		140,049	137,390
Operating lease liabilities	33,521		26,286	33,521
Current portion of long-term obligations	15,496		36,314	15,496
Total liabilities	869,672		940,387	869,672
High Acuity Care [Member]
Variable Interest Entity [Line Items]
Goodwill	239,600		231,100	239,600	233,900
Contessa Health | High Acuity Care [Member]
Variable Interest Entity [Line Items]
Investment impairment				3,000
49% Interest Sold in Two Care Centers
Variable Interest Entity [Line Items]
Proceeds from sale of noncontrolling interest	1,900
Gain Related To Sale Of Noncontrolling Interest Net Of Tax	1,400
30% Interest Sold in Two Care Centers
Variable Interest Entity [Line Items]
Proceeds from sale of noncontrolling interest		$ 3,900
Gain Related To Sale Of Noncontrolling Interest Net Of Tax		$ 2,900
Medalogix [Member]
Variable Interest Entity [Line Items]
Gain (Loss) on equity method investments					31,100
Home Health Benefit Manager [Member]
Variable Interest Entity [Line Items]
Purchase of investment				15,000
Workforce optimization company [Member]
Variable Interest Entity [Line Items]
Purchase of investment					$ 5,000
Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Cash and cash equivalents	15,600		8,800	15,600
Patient accounts receivable	6,100		9,000	6,100
Other current assets	600		100	600
Total current assets	22,300		17,900	22,300
Property and equipment	100		100	100
Operating lease right of use assets	100		100	100
Goodwill	8,500		8,500	8,500
Intangible assets	400		400	400
Other assets	200		300	200
Total assets	31,600		27,300	31,600
Accounts payable	100		500	100
Payroll and employee benefits	500		900	500
Accrued expenses	5,800		7,900	5,800
Operating lease liabilities	100		0	100
Current portion of long-term obligations	200		0	200
Total liabilities	$ 6,700		$ 9,300	$ 6,700