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Inventories (Tables)
9 Months Ended
Sep. 30, 2023
Inventory Disclosure [Abstract]  
Summary of Inventories
Inventories valued at LIFO
(last-in,
first-out),
consist of the following (in thousands):
 
    
September 30,
2023
    
December 31,
2022
 
Finished goods
   $ 43,180      $ 107,114  
Raw materials
     52,255        69,292  
  
 
 
    
 
 
 
Total FIFO
(first-in,
first-out)
inventories
     95,435        176,406  
Reserve to adjust inventories to LIFO value
     (35,051      (35,051
  
 
 
    
 
 
 
Total LIFO inventories
   $ 60,384      $ 141,355