XML 22 R11.htm IDEA: XBRL DOCUMENT v3.21.2
Note 3 - Inventories
9 Months Ended
Sep. 30, 2021
Notes to Financial Statements  
Inventory Disclosure [Text Block]

3.

Inventories

 

Inventories consist of the following (in thousands):

 

   

September 30, 2021

   

December 31, 2020

 
                 

Raw materials

  $ 35,245     $ 20,631  

Work-in-process

    932       1,416  

Finished goods

    5,018       5,489  

Supplies

    1,847       1,641  

Total inventories

  $ 43,042     $ 29,177