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

June 30,

  

December 31,

 
  

2021

  

2020

 

Raw materials

 $11,853  $12,229 

Work in process

  3,468   1,991 

Finished goods

  5,839   4,422 

Total inventory

 $21,160  $18,642