REVENUE - Sales and Valuation Accruals (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning of Period	$ 4,798	$ 4,804	$ 3,300
Provision	41,835	28,117	26,951
Payments/Adjustments	(34,203)	(28,123)	(25,447)
End of Period	12,430	4,798	4,804
Returns Allowances
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning of Period	1,023	540	344
Provision	3,095	794	783
Payments/Adjustments	(757)	(311)	(587)
End of Period	3,361	1,023	540
Prompt Payment Discounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning of Period	1,007	962	779
Provision	10,388	8,541	8,426
Payments/Adjustments	(10,217)	(8,496)	(8,243)
End of Period	1,178	1,007	962
Service Fees
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning of Period	1,168	1,486	1,167
Provision	10,112	6,437	6,267
Payments/Adjustments	(7,644)	(6,755)	(5,948)
End of Period	3,636	1,168	1,486
Volume Rebates and Chargebacks
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning of Period	1,600	1,816	1,010
Provision	17,101	12,345	11,475
Payments/Adjustments	(15,207)	(12,561)	(10,669)
End of Period	3,494	1,600	1,816
Government Rebates
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning of Period	0	0	0
Provision	1,139	0	0
Payments/Adjustments	(378)	0	0
End of Period	$ 761	$ 0	$ 0