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Inventories
12 Months Ended
Dec. 31, 2021
Inventory, Net [Abstract]  
Inventories 3. INVENTORIES
Inventories consist of the following:
(In thousands)20212020
Finished goods$25,199 $15,251 
Work-in-process11,955 9,098 
Raw materials32,958 25,913 
Stores, supplies and other18,457 16,175 
Total$88,569 $66,437 
Inventories stated on the LIFO basis amounted to $18.8 million at December 31, 2021 and $14.4 million at December 31, 2020, which were below replacement costs by $27.5 million at December 31, 2021 and $12.1 million at December 31, 2020. Inventories stated on the weighted average cost basis were $30.9 million and $33.6 million at December 31, 2021 and 2020, respectively, while inventories stated on the first in, first out method amounted to $38.9 million and $18.4 million at December 31, 2021 and 2020, respective