XML 34 R23.htm IDEA: XBRL DOCUMENT v3.21.2
Note 3 - Inventories (Tables)
9 Months Ended
Sep. 30, 2021
Notes Tables  
Schedule Of Inventory Current And Non Current [Table Text Block]
   

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