Business Segments - Business Segment Net Sales and Income before Income Taxes (Parenthetical) (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2023	Jun. 30, 2023
Forged And Cast Engineered Products [Member]
Entity Wide Information Revenue From External Customer [Line Items]
Proceeds from reimbursement of past energy costs	$ 1,874	$ 1,874

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration