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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, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Concentration Risk [Line Items]
Unbilled receivables	$ 154,900		$ 154,900		$ 155,100
Rebate receivable	37,700		37,700		35,300
Investments in equity-method investees	30,200		30,200		$ 27,900
Equity in earnings of joint ventures	$ 1,700	$ 1,400	3,393	$ 3,124
Distributions received from the investees			$ 1,100	$ 1,600
Revenue from Contract with Customer Benchmark \| Governmental Healthcare Programs \| Government Healthcare Programs
Concentration Risk [Line Items]
Concentration risk (as a percent)	13.00%	12.00%	13.00%	12.00%
Accounts Receivable, Benchmark \| Governmental Healthcare Programs \| Government Healthcare Programs
Concentration Risk [Line Items]
Concentration risk (as a percent)			13.00%		13.00%
Cost of Goods and Service, Product and Service Benchmark \| Medical Supply Vendors \| Four Vendors
Concentration Risk [Line Items]
Concentration risk (as a percent)	57.00%	59.00%	57.00%	67.00%
Largest Payer \| Revenue from Contract with Customer Benchmark \| Company's Largest Payer
Concentration Risk [Line Items]
Concentration risk (as a percent)	14.00%	15.00%	14.00%	15.00%
Joint Venture
Concentration Risk [Line Items]
Distributions received from the investees	$ 1,100	$ 1,600	$ 1,100	$ 1,600