REVENUE AND ACCOUNTS RECEIVABLE - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Disaggregation of Revenue [Line Items]
Contract with customer, term	1 year
Accrual for Employee Retention Tax Credit	$ 36,505		$ 36,477
Revenue Benchmark | Customer Concentration Risk
Disaggregation of Revenue [Line Items]
Concentration risk	100.00%	100.00%
Medicaid | Revenue Benchmark | Customer Concentration Risk
Disaggregation of Revenue [Line Items]
Concentration risk	38.80%	30.30%
Medicare | Revenue Benchmark | Customer Concentration Risk
Disaggregation of Revenue [Line Items]
Concentration risk	35.70%	48.10%
Managed Care, Private And Other | Revenue Benchmark | Customer Concentration Risk
Disaggregation of Revenue [Line Items]
Concentration risk	25.50%	21.60%