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Inventories (Tables)
12 Months Ended
Dec. 31, 2022
Inventory Disclosure [Abstract]  
Summary of Inventories
Inventories at LIFO value consist of the following as of December 31 (in thousands):
 
    
2022
    
2021
 
Finished goods
   $  107,114      $ 58,401  
Raw materials
     69,292        56,441  
    
 
 
    
 
 
 
Total FIFO inventories
     176,406        114,842  
Reserve to adjust inventories to LIFO value
     (35,051      (36,467
    
 
 
    
 
 
 
Total LIFO inventories
   $ 141,355      $ 78,375