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

March 31,

  

December 31,

 
  

2022

  

2021

 

Raw materials

 $24,461  $16,148 

Work-in-process

  12,574   13,639 

Finished goods

  4,004   6,575 
   41,039   36,362 

Less: Reserve for excess and obsolete inventory

  (1,972)  (2,985)

Net inventories

 $39,067  $33,377