PRODUCT REVENUE - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Revenue	$ 20,251	$ 10,486
Accounts receivable	18,702		$ 12,531
Product, DANYELZA
Revenue	20,251	10,486
Product, DANYELZA \| Europe
Revenue	2,516	$ 0
Accounts receivable	2,770
Allowance for doubtful accounts	$ 219

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