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Inventories (Tables)
9 Months Ended
Sep. 30, 2020
Inventory, Net [Abstract]  
Schedule of Inventory, Current
The components of inventories are as follows:
(In thousands)September 30, 2020December 31, 2019
Finished goods$15,666 $18,217 
Work-in-process10,716 12,123 
Raw materials20,347 20,121 
Stores, supplies and other16,814 13,744 
Total$63,543 $64,205