Related Party Transactions - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Smith, Gambrell & Russell, LLP [Member]
Related Party Transaction [Line Items]
Fees payable to Smith, Gambrell & Russell	$ 0.3	$ 0.1	$ 0.8
Amount due to related party	0.0	0.0
European Metal Recycling Limited [Member]
Related Party Transaction [Line Items]
Amount due to related party	0.0	0.0
Tendering process to select best buyer of scrap metal	0.1	0.6	$ 0.2
Advan Six [Member]
Related Party Transaction [Line Items]
Amount due to related party	0.0	0.1
Tendering process to select best buyer of scrap metal	$ 0.5	$ 0.4