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Business Segment Information - Intra-Segment and Inter-Segment Revenues (Detail) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net sales | $ 197,599,000 |  | $ 135,513,000 |  | $ 559,687,000 |  | $ 399,367,000 |
Total consolidated sales | 197,599,000 |  | 135,513,000 |  | 559,687,000 |  | 399,367,000 |
Stock-based compensation |  |  |  |  | 9,507,000 |  | 5,790,000 |
Income before income taxes | 2,290,000 |  | 4,141,000 |  | 71,966,000 |  | 12,225,000 |
Operating Segments [Member] |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Elimination of intra- and inter-segment sales | 661,000 |  | 14,393,000 |  | 9,387,000 |  | 29,450,000 |
Direct cost of sales | 126,050,000 |  | 85,193,000 |  | 347,470,000 |  | 246,076,000 |
Shop burden | 6,960,000 |  | 5,048,000 |  | 18,354,000 |  | 13,831,000 |
Selling expense | 10,893,000 |  | 7,408,000 |  | 33,245,000 |  | 24,506,000 |
Project engineering expense | 7,026,000 |  | 5,069,000 |  | 22,160,000 |  | 14,666,000 |
General and administrative expense | 9,941,000 |  | 6,463,000 |  | 34,712,000 |  | 20,740,000 |
Gain on sale of Global Pump Solutions business |  |  |  |  | (63,701,000) |  |  |
Other segment items | (7,459,000) | [1] | 2,429,000 | [2] | 9,482,000 | [3] | 7,194,000 | [4]
Income from operations | 29,932,000 |  | 38,295,000 |  | 167,352,000 |  | 101,804,000 |
Stock-based compensation | 3,273,000 |  | 1,943,000 |  | 9,507,000 |  | 5,790,000 |
Other corporate expenses | 16,598,000 | [5] | 14,772,000 | [6] | 59,127,000 | [7] | 42,435,000 | [8]
Elimination of intra- and inter-segment activity | 661,000 |  | 14,393,000 |  | 9,387,000 |  | 29,450,000 |
Interest expense | 5,054,000 |  | 2,648,000 |  | 16,169,000 |  | 9,315,000 |
Other income | 2,056,000 | [9] | 398,000 | [10] | 1,196,000 | [11] | 2,589,000 | [12]
Income before income taxes | 2,290,000 |  | 4,141,000 |  | 71,966,000 |  | 12,225,000 |
Operating Segments [Member] | Industrial Segment Sales [Member] |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net sales | 197,599,000 |  | 135,513,000 |  | 559,687,000 |  | 399,367,000 |
Total consolidated sales | 197,599,000 |  | 135,513,000 |  | 559,687,000 |  | 399,367,000 |
Operating Segments [Member] | Engineered Systems Segment [Member] |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net sales | 141,400,000 |  | 98,527,000 |  | 396,697,000 |  | 293,186,000 |
Total consolidated sales | 141,400,000 |  | 98,527,000 |  | 396,697,000 |  | 293,186,000 |
Direct cost of sales | 90,352,000 |  | 59,568,000 |  | 240,056,000 |  | 176,146,000 |
Shop burden | 4,003,000 |  | 2,156,000 |  | 10,272,000 |  | 5,955,000 |
Selling expense | 7,813,000 |  | 4,502,000 |  | 23,578,000 |  | 15,907,000 |
Project engineering expense | 4,183,000 |  | 3,322,000 |  | 13,641,000 |  | 9,710,000 |
General and administrative expense | 7,513,000 |  | 4,071,000 |  | 25,738,000 |  | 13,608,000 |
Gain on sale of Global Pump Solutions business |  |  |  |  | 0 |  |  |
Other segment items | 4,794,000 | [1] | 1,822,000 | [2] | 10,332,000 | [3] | 5,172,000 | [4]
Income from operations | 22,742,000 |  | 23,086,000 |  | 73,079,000 |  | 66,687,000 |
Operating Segments [Member] | Engineered Systems Segment [Member] | Industrial Segment Sales [Member] |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net sales | 143,692,000 |  | 91,277,000 |  | 392,586,000 |  | 278,018,000 |
Total consolidated sales | 143,692,000 |  | 91,277,000 |  | 392,586,000 |  | 278,018,000 |
Operating Segments [Member] | Industrial Process Solutions Segment [Member] |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net sales | 56,860,000 |  | 51,379,000 |  | 172,378,000 |  | 135,631,000 |
Total consolidated sales | 56,860,000 |  | 51,379,000 |  | 172,378,000 |  | 135,631,000 |
Direct cost of sales | 35,698,000 |  | 25,625,000 |  | 107,414,000 |  | 69,930,000 |
Shop burden | 2,957,000 |  | 2,893,000 |  | 8,081,000 |  | 7,876,000 |
Selling expense | 3,080,000 |  | 2,906,000 |  | 9,667,000 |  | 8,599,000 |
Project engineering expense | 2,843,000 |  | 1,747,000 |  | 8,518,000 |  | 4,956,000 |
General and administrative expense | 2,428,000 |  | 2,392,000 |  | 8,975,000 |  | 7,131,000 |
Gain on sale of Global Pump Solutions business |  |  |  |  | (63,701,000) |  |  |
Other segment items | (2,665,000) | [1] | 607,000 | [2] | (850,000) | [3] | 2,022,000 | [4]
Income from operations | 7,190,000 |  | 15,209,000 |  | 94,273,000 |  | 35,117,000 |
Operating Segments [Member] | Industrial Process Solutions Segment [Member] | Industrial Segment Sales [Member] |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net sales | 53,907,000 |  | 44,236,000 |  | 167,102,000 |  | 121,349,000 |
Total consolidated sales | 53,907,000 |  | 44,236,000 |  | 167,102,000 |  | 121,349,000 |
Operating Segments [Member] | Inter sub segment Eliminations [Member] |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net sales | 272,000 |  | 523,000 |  | 459,000 |  | 970,000 |
Total consolidated sales | 272,000 |  | 523,000 |  | 459,000 |  | 970,000 |
Operating Segments [Member] | Inter sub segment Eliminations [Member] | Engineered Systems Segment [Member] |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net sales | 171,000 |  | 298,000 |  | 358,000 |  | 581,000 |
Total consolidated sales | 171,000 |  | 298,000 |  | 358,000 |  | 581,000 |
Operating Segments [Member] | Inter sub segment Eliminations [Member] | Industrial Process Solutions Segment [Member] |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net sales | 101,000 |  | 225,000 |  | 101,000 |  | 389,000 |
Total consolidated sales | 101,000 |  | 225,000 |  | 101,000 |  | 389,000 |
Operating Segments [Member] | Intra Sub Segment Eliminations [Member] |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net sales | 389,000 |  | 13,870,000 |  | 8,928,000 |  | 28,480,000 |
Total consolidated sales | 389,000 |  | 13,870,000 |  | 8,928,000 |  | 28,480,000 |
Operating Segments [Member] | Intra Sub Segment Eliminations [Member] | Engineered Systems Segment [Member] |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net sales | (2,463,000) |  | 6,952,000 |  | 3,753,000 |  | 14,587,000 |
Total consolidated sales | (2,463,000) |  | 6,952,000 |  | 3,753,000 |  | 14,587,000 |
Operating Segments [Member] | Intra Sub Segment Eliminations [Member] | Industrial Process Solutions Segment [Member] |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net sales | 2,852,000 |  | 6,918,000 |  | 5,175,000 |  | 13,893,000 |
Total consolidated sales | 2,852,000 |  | 6,918,000 |  | 5,175,000 |  | 13,893,000 |
Operating Segments [Member] | Total Segment Sales [Member] |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net sales | 198,260,000 |  | 149,906,000 |  | 569,074,000 |  | 428,817,000 |
Total consolidated sales | $ 198,260,000 |  | $ 149,906,000 |  | $ 569,074,000 |  | $ 428,817,000 |
[1] | Includes amortization expenses, acquisition and integration expenses, and restructuring expenses.
[2] | Includes amortization expenses, and acquisition and integration expenses.
[3] | Includes amortization expenses, acquisition and integration expenses, divestiture expenses, restructuring expenses, and asbestos litigation expenses.
[4] | Includes amortization expenses, acquisition and integration expenses, and asbestos litigation expenses.
[5] | Includes corporate compensation, professional services and information technology expenses, and other general and administrative corporate expenses.
[6] | Includes corporate compensation, professional services and information technology expenses, and other general and administrative corporate expenses.
[7] | Includes corporate compensation, professional services and information technology expenses, and other general and administrative corporate expenses.
[8] | Includes corporate compensation, professional services and information technology expenses, and other general and administrative corporate expenses.
[9] | Includes foreign exchange (gain) loss.
[10] | Includes foreign exchange (gain) loss and pension expense.
[11] | Includes foreign exchange (gain) loss and pension expense.
[12] | Includes foreign exchange (gain) loss and pension expense.

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