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Related Party Transactions - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Smith, Gambrell & Russell, LLP [Member]
Related Party Transaction [Line Items]
Fees incured from Smith, Gambrell & Russell	$ 0.2	$ 0.1
Other Liabilities			$ 0.0
Smith, Gambrell & Russell, LLP [Member] \| Maximum [Member]
Related Party Transaction [Line Items]
Other Liabilities	0.1
European Metal Recycling Limited [Member]
Related Party Transaction [Line Items]
Other Liabilities			0.0
European Metal Recycling Limited [Member] \| Maximum [Member]
Related Party Transaction [Line Items]
Other Liabilities	0.1
Tendering process to select best buyer of scrap metal	0.1	0.1
Advan Six [Member]
Related Party Transaction [Line Items]
Other Liabilities	0.0		$ 0.0
Tendering process to select best buyer of scrap metal	$ 0.0	$ 0.1