XML 35 R25.htm IDEA: XBRL DOCUMENT v3.23.3
Note 4 - Inventory (Tables)
9 Months Ended
Sep. 30, 2023
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
  

September 30, 2023

  

December 31, 2022

 

At average cost (approximates current cost)

        

Finished goods

 $11,959  $11,719 

Work in process

  922   879 

Raw materials and supplies

  27,740   33,897 
   40,621   46,495 

LIFO reserve

  (13,711)  (19,734)

Total inventory

 $26,910  $26,761