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Business Segments - Schedule of Financial Information Concerning Corporation's Reportable Segments (Parenthetical) (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Dec. 31, 2024 | Dec. 31, 2023
Revenue from External Customer [Line Items] |  |  |  |  |  |
Severance charge, depreciation and other exit costs | $ 6,750 |  | $ 6,750 |  |  |
Investments in joint ventures | 2,175 |  | 2,175 |  | $ 2,175 |
Noncurrent asbestos-related insurance receivables | 115,143 |  | 115,143 |  | 124,295 |
Employee retention credits | 735 |  | 735 |  |  |
Depreciation and Amortization Expense [Member] |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |
Accelerated depreciation | 654 |  | 654 |  |  |
Asbestos Claims [Member] |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |
Insurance receivable - asbestos | $ 130,143 | $ 151,050 | $ 130,143 | $ 151,050 | 139,295 | $ 160,245
Sales Revenue, Net [Member] | Individual Foreign Countries [Member] | Maximum [Member] |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |
Net sales | 10.00% | 10.00% | 10.00% | 10.00% |  |
Forged and Cast Engineered Products [Member] |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |
Investments in joint ventures | $ 2,175 |  | $ 2,175 |  | $ 2,175 |
Employee retention credits | 456 |  | 456 |  |  |
Air and Liquid Processing [Member] |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |
Employee retention credits | $ 279 |  | $ 279 |  |  |

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