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Note 4 - Inventories (Tables)
3 Months Ended
Mar. 31, 2022
Notes Tables  
Schedule of Inventory, Current [Table Text Block]

Inventories, net:

 

March 31,

2022

  

December 31,

2021

 

Raw materials and in-process

 $26,507  $23,263 

Finished parts

  52,752   52,039 

Finished products

  10,715   10,346 

Total net inventories

 $89,974  $85,648