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Note 2 - Inventories (Tables)
9 Months Ended
Sep. 30, 2020
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
  

September 30,

  

December 31,

 
  

2020

  

2019

 

Finished goods

 $67,304  $65,413 

Work in process

  989   652 

Raw materials

  11,928   7,314 

Inventories

 $80,221  $73,379