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Note 7 - Inventories (Tables)
9 Months Ended
Sep. 30, 2021
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   

September 30,

   

December 31,

 
   

2021

   

2020

 

Raw materials

  $ 12,357     $ 12,229  

Work in process

    4,007       1,991  

Finished goods

    5,310       4,422  

Total inventory

  $ 21,674     $ 18,642