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

(7) Inventories

 

Inventories consist of the following:

 

   March 31,
2022
   December 31,
2021
 
         
Raw materials  $6,385   $4,819 
Finished goods   2,374    1,682 
Inventories, gross   8,759    6,501 
Allowance for excess inventory quantities   (200)   (406)
Inventories, net  $8,559   $6,095