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Accrued Expenses
 3 Months Ended
Mar. 31, 2022
Payables and Accruals [Abstract]  
Accrued Expenses Accrued Expenses
Accrued expenses consisted of the following (in thousands):
March 31, 2022December 31, 2021
Legal and settlement costs$3,209 $2,806 
Commissions to sales agents2,444 2,630 
Estimated sales returns587 788 
Accrued clinical trials713 694 
Accrued GPO fees565 559 
Accrued rebates1,147 1,343 
Other1,147 992 
Accrued expenses$9,812 $9,812