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Select Balance Sheet Information - Schedule of Inventories (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Finished Goods $ 32,529 $ 39,903
Work in Process 34,700 35,705
Raw Material, Fuel and Supplies 79,735 72,882
Inventories $ 146,964 $ 148,490