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Revenue from Contracts with Customers (Disaggregation of Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Disaggregation of Revenue [line Items]
Net sales	$ 158,992	$ 303,840	$ 483,355	$ 1,033,731
Long-term Contract with Customer
Disaggregation of Revenue [line Items]
Net sales	66,344	212,087	212,579	683,858
Short-term Contract with Customer
Disaggregation of Revenue [line Items]
Net sales	88,629	79,710	246,726	296,954
By-products and other
Disaggregation of Revenue [line Items]
Net sales	$ 4,019	$ 12,043	$ 24,050	$ 52,919

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