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Note 7 - Inventories (Tables)
3 Months Ended
Mar. 31, 2021
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   

March 31,

   

December 31,

 
   

2021

   

2020

 

Raw materials

  $ 12,066     $ 12,229  

Work in process

    3,080       1,991  

Finished goods

    4,870       4,422  

Total inventory

  $ 20,016     $ 18,642