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Note 3 - Inventories
9 Months Ended
Sep. 30, 2022
Notes to Financial Statements  
Inventory Disclosure [Text Block]

3.

Inventories

 

Inventories consist of the following (in thousands):

 

  

September 30, 2022

  

December 31, 2021

 
         

Raw materials

 $52,915  $44,697 

Work-in-process

  3,817   3,018 

Finished goods

  12,646   10,096 

Supplies

  2,200   1,840 

Total inventories

 $71,578  $59,651