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Inventories (Tables)
3 Months Ended
Mar. 31, 2023
Inventory Disclosure [Abstract]  
Schedule of inventories
Inventories consisted of the following:
(in thousands)March 31, 2023December 31, 2022
Finished goods$36,635 $28,630 
Raw materials2,989 3,116 
Parts, supplies and other47,019 45,772 
Total inventories$86,643 $77,518