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Inventories (Tables)
9 Months Ended
Sep. 30, 2024
Inventory Disclosure [Abstract]  
Schedule of Inventories
Inventories are comprised of the following: 
September 30, 2024December 31, 2023
 (Dollars in thousands)
Inventories:
Raw materials and supplies$92,735 $109,084 
Work in process140,649 186,473 
Finished goods33,075 34,589 
         Total$266,459 $330,146 
In the first nine months of 2024 and for the full year of 2023, we recorded lower of cost or market (“LCM”) inventory valuation adjustments of $11.9 million and $12.4 million, respectively, in order to state our inventories at market. As of September 30, 2024 and December 31, 2023, the carrying value of our inventory reflected a LCM reserve of $10.1 million and $12.4 million, respectively, due to the impact of these adjustments.