Quarterly report pursuant to Section 13 or 15(d)

ACCRUED EXPENSES (Details)

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ACCRUED EXPENSES (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
ACCRUED EXPENSES    
Accrued compensation $ 4,421 $ 2,702
Research and development 160 870
Accrued royalties payable 3,779 3,833
Accrued coupons and rebates 11,627 10,603
Return reserve 3,151 3,240
Other 2,747 1,485
Total accrued expenses $ 25,885 $ 22,733