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Inventories
3 Months Ended
Mar. 31, 2021
Inventory, Net [Abstract]  
Inventories
The components of inventories are as follows:
(In thousands)March 31, 2021December 31, 2020
Finished goods$16,288 $15,251 
Work-in-process11,531 9,098 
Raw materials25,639 25,913 
Stores, supplies and other17,165 16,175 
Total$70,623 $66,437