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SIGNIFICANT ACCOUNTING POLICIES - Schedule of Service Fee Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Revenue from External Customer [Line Items]
Total service revenue	$ 498,230	$ 459,714	$ 969,629	$ 891,421
Commercial insurance
Revenue from External Customer [Line Items]
Total service revenue	278,902	256,517	541,410	497,145
Medicare
Revenue from External Customer [Line Items]
Total service revenue	116,331	101,719	224,499	195,186
Medicaid
Revenue from External Customer [Line Items]
Total service revenue	12,597	11,001	24,283	21,906
Workers' compensation/personal injury
Revenue from External Customer [Line Items]
Total service revenue	10,642	10,997	21,114	22,837
Other payors
Revenue from External Customer [Line Items]
Total service revenue	29,394	26,568	57,087	51,948
Management fee revenue
Revenue from External Customer [Line Items]
Total service revenue	6,688	6,106	12,967	12,014
Other revenue
Revenue from External Customer [Line Items]
Total service revenue	13,509	9,837	26,052	18,898
Revenue under capitation arrangements
Revenue from External Customer [Line Items]
Total service revenue	$ 30,167	$ 36,969	$ 62,217	$ 71,487

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