Intangible Assets - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Goodwill [Line Items]
Total amortization expense of intangible assets	$ 0.5	$ 0.5	$ 1.5	$ 1.6
Operating Segments | Domestic Coke
Goodwill [Line Items]
Intangible assets, net	$ 3.4		$ 3.4		$ 3.4