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Business Segments - Summary of Net Sales By Product Line (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
Revenue from External Customer [Line Items] |  |  |  |  |
Net Sales | $ 113,104 | $ 110,988 | $ 217,369 | $ 221,203 |
(Loss) Income Before Income Taxes | (6,128) | 3,415 | (4,178) | 1,663 |
Capital Expenditures |  |  | 3,661 | 5,510 |
Depreciation and amortization | 5,368 | 4,698 | 10,004 | 9,368 |
Identifiable Assets | 537,153 |  | 537,153 |  | $ 530,896
U.S. [Member] |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |
Net Sales | 61,727 | 72,916 | 121,623 | 142,680 |
(Loss) Income Before Income Taxes | (48) | 1,205 | 349 | (1,018) |
Foreign [Member] |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |
Net Sales | 51,377 | 38,072 | 95,746 | 78,523 |
(Loss) Income Before Income Taxes | (6,080) | 2,210 | (4,527) | 2,681 |
Continuing Operations [Member] |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |
Identifiable Assets | 537,153 |  | 537,153 |  | 530,896
Long-lived Assets | 283,080 |  | 283,080 |  | 291,258
Continuing Operations [Member] | U.S. [Member] |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |
Long-lived Assets | 221,711 |  | 221,711 |  | 235,785
Continuing Operations [Member] | Foreign [Member] |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |
Long-lived Assets | 61,369 |  | 61,369 |  | 55,473
Operating Segments [Member] |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |
Net Sales | 113,104 | 110,988 | 217,369 | 221,203 |
Operating Segments [Member] | Forged and Cast Mill Rolls [Member] |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |
Net Sales | 72,227 | 72,647 | 140,849 | 146,043 |
Operating Segments [Member] | FEP [Member] |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |
Net Sales | 5,682 | 3,066 | 9,347 | 6,859 |
Operating Segments [Member] | Forged and Cast Engineered Products [Member] |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |
Net Sales | 77,909 | 75,713 | 150,196 | 152,902 |
Capital Expenditures |  |  | 2,646 | 4,134 |
Depreciation and amortization | 5,084 | 4,454 | 9,452 | 8,884 |
Operating Segments [Member] | Forged and Cast Engineered Products [Member] | Continuing Operations [Member] |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |
Identifiable Assets | 310,308 |  | 310,308 |  | 289,129
Operating Segments [Member] | Air and Liquid Processing [Member] |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |
Net Sales | 35,195 | 35,275 | 67,173 | 68,301 |
Capital Expenditures |  |  | 1,015 | 1,376 |
Depreciation and amortization | 284 | 244 | 552 | 484 |
Operating Segments [Member] | Air and Liquid Processing [Member] | Continuing Operations [Member] |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |
Identifiable Assets | 220,999 |  | 220,999 |  | 230,171
Operating Segments [Member] | Air Handling Systems [Member] |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |
Net Sales | 13,882 | 14,043 | 24,510 | 26,553 |
Operating Segments [Member] | Heat Exchange Coils [Member] |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |
Net Sales | 11,299 | 11,979 | 22,824 | 22,802 |
Operating Segments [Member] | Centrifugal Pumps [Member] |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |
Net Sales | 10,014 | $ 9,253 | 19,839 | $ 18,946 |
Other Expense, Including Corporate Costs - Net [Member] | Continuing Operations [Member] |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |
Identifiable Assets | $ 5,846 |  | $ 5,846 |  | $ 11,596

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