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Business Segment Information - Intra-Segment and Inter-Segment Revenues (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net sales | $ 557,933 |  | $ 544,845 |  | $ 422,627 |
Stock-based compensation | 7,514 |  | 4,533 |  | 3,895 |
Total consolidated income from operations | 35,403 |  | 34,569 |  | 22,161 |
Total income before income taxes | 17,691 |  | 21,525 |  | 23,689 |
Operating Segments [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net sales |  |  |  |  | 422,627 |
Direct cost of sales | 365,216 |  | 404,763 |  | 306,057 |
Shop burden | 20,204 |  | 19,177 |  | 11,808 |
Selling expense | 33,992 |  | 29,765 |  | 23,745 |
Project engineering expense | 21,671 |  | 16,947 |  | 12,510 |
General and administrative expense | 29,024 |  | 33,373 |  | 23,677 |
Other segment items | 9,531 | [1] | 9,454 | [2] | 9,387 | [3]
Segment profit | 104,201 |  | 82,461 |  | 56,390 |
Stock-based compensation | 7,514 |  | 4,533 |  | 3,895 |
Other corporate expenses | 59,033 | [4] | 42,374 | [5] | 32,849 | [6]
Elimination of intersegment profit | 2,251 |  | 985 |  | (2,515) |
Total consolidated income from operations | 35,403 |  | 34,569 |  | 22,161 |
Interest Expense | 13,020 |  | 13,416 |  | 5,419 |
Other profit or loss | 4,692 | [7] | (372) | [8] | (6,947) | [9]
Total income before income taxes | 17,691 |  | 21,525 |  | 23,689 |
Operating Segments [Member] | Industrial Segment Sales [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net sales | 557,933 |  | 544,845 |  | 422,627 |
Operating Segments [Member] | Engineered Systems Segment [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net sales | 399,032 |  | 412,929 |  | 278,354 |
Direct cost of sales | 254,381 |  | 287,016 |  | 200,020 |
Shop burden | 8,367 |  | 7,563 |  | 2,321 |
Selling expense | 21,999 |  | 17,933 |  | 12,395 |
Project engineering expense | 13,821 |  | 11,359 |  | 7,743 |
General and administrative expense | 19,085 |  | 23,370 |  | 14,426 |
Other segment items | 6,764 | [1] | 5,777 | [2] | 6,396 | [3]
Segment profit | 74,615 |  | 59,911 |  | 35,053 |
Total consolidated income from operations | 72,373 |  | 59,846 |  | 36,200 |
Operating Segments [Member] | Engineered Systems Segment [Member] | Industrial Segment Sales [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net sales | 384,025 |  | 380,108 |  | 263,224 |
Operating Segments [Member] | Industrial Process Solutions Segment [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net sales | 184,807 |  | 183,011 |  | 165,221 |
Direct cost of sales | 110,835 |  | 117,747 |  | 106,037 |
Shop burden | 11,837 |  | 11,614 |  | 9,487 |
Selling expense | 11,993 |  | 11,832 |  | 11,350 |
Project engineering expense | 7,850 |  | 5,588 |  | 4,767 |
General and administrative expense | 9,939 |  | 10,003 |  | 9,251 |
Other segment items | 2,767 | [1] | 3,677 | [2] | 2,991 | [3]
Segment profit | 29,586 |  | 22,550 |  | 21,338 |
Total consolidated income from operations | 29,575 |  | 21,630 |  | 22,705 |
Operating Segments [Member] | Industrial Process Solutions Segment [Member] | Industrial Segment Sales [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net sales | 173,908 |  | 164,737 |  | 159,404 |
Operating Segments [Member] | Intra - Segment Sales [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Excise and Sales Taxes | 25,906 |  | 51,095 |  | 20,947 |
Net sales | 25,388 |  | 48,891 |  | 19,624 |
Operating Segments [Member] | Intra - Segment Sales [Member] | Engineered Systems Segment [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net sales | 14,767 |  | 31,402 |  | 14,088 |
Operating Segments [Member] | Intra - Segment Sales [Member] | Industrial Process Solutions Segment [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net sales | 10,621 |  | 17,489 |  | 5,536 |
Operating Segments [Member] | Inter - Segment Sales [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net sales | 518 |  | 2,204 |  | 1,323 |
Operating Segments [Member] | Inter - Segment Sales [Member] | Engineered Systems Segment [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net sales | 240 |  | 1,419 |  | 1,042 |
Operating Segments [Member] | Inter - Segment Sales [Member] | Industrial Process Solutions Segment [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net sales | 278 |  | 785 |  | 281 |
Operating Segments [Member] | Total Segment Sales [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net sales | $ 583,839 |  | $ 595,940 |  | $ 443,574 |
[1] | Includes amortization expenses, acquisition and integration expenses, and asbestos litigation expenses.
[2] | Includes amortization expenses, acquisition and integration expenses, and asbestos litigation expenses.
[3] | Includes amortization expenses, acquisition and integration expenses, and asbestos litigation expenses.
[4] | Includes corporate compensation, professional services, information technology, and other general, administrative corporate expenses.
[5] | Includes corporate compensation, professional services, information technology, and other general, administrative corporate expenses.
[6] | Includes corporate compensation, professional services, information technology, and other general, administrative corporate expenses.
[7] | Includes foreign exchange (gain) loss and pension expense.
[8] | Includes foreign exchange (gain) loss and pension expense.
[9] | Includes foreign exchange (gain) loss and pension expense.

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