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

December 31,

 
  

2021

  

2020

 

Raw materials

 $67,127  $40,846 

Work in progress

  31,103   25,916 

Finished goods

  41,153   33,371 

Inventories

 $139,383  $100,133