REVENUE RECOGNITION AND RELATED ALLOWANCES - Disaggregation (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Revenue recognition	$ 106,786	$ 64,477
Sales of generic pharmaceutical products
Revenue recognition	63,713	49,107
Sales of established brand products, royalties, and other pharmaceutical services
Revenue recognition	26,743	14,078
Sales of rare disease pharmaceutical products
Revenue recognition	$ 16,330	$ 1,292

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