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Inventories
3 Months Ended
Mar. 31, 2022
Inventory Disclosure [Abstract]  
Inventories

(4) Inventories

 

Inventories consist of the following (in thousands):

 

   March 31, 2022   December 31, 2021 
Raw materials  $5,293   $5,613 
Work in process   755    571 
Finished goods   11,252    11,761 
Total  $17,300   $17,945