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Note 4 - Inventories
12 Months Ended
Dec. 31, 2021
Notes to Financial Statements  
Inventory Disclosure [Text Block]

4.

INVENTORIES:

 

Inventories consist of the following (in thousands):

 

  

December 31,

 
  

2021

  

2020

 
         

Raw materials

 $44,697  $20,631 

Work-in-process

  3,018   1,416 

Finished goods

  10,096   5,489 

Supplies

  1,840   1,641 

Total inventories

 $59,651  $29,177