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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Concentration Risk [Line Items]
Rebate receivable	$ 49,100		$ 52,000
Investments in equity-method investees	21,300		$ 20,900
Proportionate share of earnings in equity-method investees	1,125	$ 1,437
Distributions received from the investees	750	2,500
Joint Venture
Concentration Risk [Line Items]
Distributions received from the investees	$ 800	$ 2,500
Revenue from Contract with Customer Benchmark \| Company's Largest Payer \| Largest Payer
Concentration Risk [Line Items]
Concentration risk	14.00%	14.00%
Revenue from Contract with Customer Benchmark \| Governmental Healthcare Programs \| Government Healthcare Programs
Concentration Risk [Line Items]
Concentration risk	12.00%	12.00%
Accounts Receivable, Benchmark \| Governmental Healthcare Programs \| Government Healthcare Programs
Concentration Risk [Line Items]
Concentration risk	14.00%		12.00%
Cost of Goods and Service, Product and Service Benchmark \| Medical Supply Vendors \| Four Vendors
Concentration Risk [Line Items]
Concentration risk	66.00%	72.00%