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v3.25.3

Acquisitions - Schedule of Unaudited Pro Forma Financial Information (Details) - Environmental Integrated Solutions [Member] - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Business Acquisition [Line Items] |  |  |  |
Net sales | $ 197,599 | $ 174,654 | $ 559,687 | $ 515,276
Net income attributable to CECO Environmental Corp. | $ 1,499 | $ 1,834 | $ 46,993 | $ 7,159
Earnings per share: |  |  |  |
Basic | $ 0.04 | $ 0.05 | $ 1.33 | $ 0.21
Diluted | $ 0.04 | $ 0.05 | $ 1.29 | $ 0.2

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