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REVENUE RECOGNITION (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
REVENUE RECOGNITION.    
Gross product revenue $ 4,119 $ 8,172
Chargebacks and administrative fees (367) (840)
Trade discounts and allowances (182) (383)
Government rebates and co-payment assistance (229) (372)
Sales returns and allowances (708) (40)
Total gross-to-net adjustments (1,486) (1,635)
Net product revenue 2,633 6,537
Estimated amount of gross net accruals $ 200 $ 400