Inventories (Schedule of Inventories) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Inventories:
Raw materials and supplies	$ 98,079		$ 98,079		$ 109,084
Work in process	165,488		165,488		186,473
Finished goods	41,219		41,219		34,589
Total	304,786		304,786		330,146
Lower of cost or market inventory valuation adjustment	1,381	$ 0	4,073	$ 0	12,400
Inventory Valuation Reserves	$ 5,100		$ 5,100		$ 12,400

Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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-Topic 852
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Gross amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Amount of valuation reserve for inventory.

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Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

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Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels.

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