REVENUE - Net Revenue Earned by Category of Payer (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Disaggregation of Revenue [Line Items]
Net revenue	$ 1,015,848	$ 915,784
Commercial payers
Disaggregation of Revenue [Line Items]
Net revenue	873,911	786,278
Government payers
Disaggregation of Revenue [Line Items]
Net revenue	122,789	115,205
Patients
Disaggregation of Revenue [Line Items]
Net revenue	$ 19,148	$ 14,301

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details