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Inventories
12 Months Ended
Dec. 31, 2023
Inventory, Net [Abstract]  
Inventories 3. INVENTORIES
Inventories consist of the following:
(In thousands)20232022
Finished goods$29,821 $34,686 
Work-in-process7,830 15,604 
Raw materials21,939 58,262 
Stores, supplies and other22,447 19,219 
Total$82,037 $127,771 
Inventories stated on the LIFO basis amounted to $7.2 million at December 31, 2023 and $25.3 million at December 31, 2022, which were below replacement costs by $13.2 million at December 31, 2023 and $15.6 million at December 31, 2022. Inventories stated on the weighted average cost basis were $45.3 million and $62.9 million at December 31, 2023 and 2022, respectively, while inventories stated on the FIFO method amounted to $29.6 million and $39.5 million at December 31, 2023 and 2022, respective