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Note 4 - Inventories (Tables)
12 Months Ended
Dec. 31, 2021
Notes Tables  
Schedule of Inventory, Current [Table Text Block]

Inventories, net

 

December 31,

2021

  

December 31,

2020

 

Raw materials and in-process

 $23,263  $18,152 

Finished parts

  52,039   51,701 

Finished products

  10,346   12,833 

Total net inventories

 $85,648  $82,686