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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Concentration Risk [Line Items]
Rebate receivable	$ 58,200		$ 58,200		$ 53,400
Investments in equity-method investees	19,700		19,700		$ 19,400
Proportionate share of earnings in equity-method investees	$ 1,400	$ 1,300	2,834	$ 2,593
Distributions received from the investees		$ 1,000	$ 2,500	$ 1,000
Revenue from Contract with Customer Benchmark \| Company's Largest Payer \| Largest Payer
Concentration Risk [Line Items]
Concentration risk	14.00%	15.00%	14.00%	15.00%
Revenue from Contract with Customer Benchmark \| Governmental Healthcare Programs \| Government Healthcare Programs
Concentration Risk [Line Items]
Concentration risk	12.00%	12.00%	12.00%	12.00%
Accounts Receivable, Benchmark \| Governmental Healthcare Programs \| Government Healthcare Programs
Concentration Risk [Line Items]
Concentration risk			13.00%		13.00%
Cost of Goods and Service, Product and Service Benchmark \| Medical Supply Vendors \| Four Vendors
Concentration Risk [Line Items]
Concentration risk	74.00%	72.00%	73.00%	73.00%