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Earnings per Share (Tables) | 9 Months Ended
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Sep. 30, 2025
Earnings Per Share [Abstract] |
Number of Shares Outstanding for Calculation of Earnings Per Share | The computational components of basic and diluted earnings per share for the three months ended September 30, 2025 and 2024 are as follows:
|  | Three months ended September 30, |
(in thousands) |  | 2025 |  |  | 2024 |
Numerator (for basic and diluted earnings per share) |  |  |  |  |  |
Net income attributable to CECO Environmental Corp. |  | $ | 1,499 |  |  | $ | 2,086 |
Denominator |  |  |  |  |  |
Basic weighted-average shares outstanding |  |  | 35,360 |  |  |  | 34,967 |
Common stock equivalents arising from stock options and restricted stock awards |  |  | 1,037 |  |  |  | 1,522 |
Diluted weighted-average shares outstanding |  |  | 36,397 |  |  |  | 36,489 |
The computational components of basic and diluted earnings per share for the nine months ended September 30, 2025 and 2024 are as follows:
|  | Nine months ended September 30, |
(in thousands) |  | 2025 |  |  | 2024 |
Numerator (for basic and diluted earnings per share) |  |  |  |  |  |
Net income attributable to CECO Environmental Corp. |  | $ | 46,993 |  |  | $ | 8,079 |
Denominator |  |  |  |  |  |
Basic weighted-average shares outstanding |  |  | 35,226 |  |  |  | 34,910 |
Common stock equivalents arising from stock options and restricted stock awards |  |  | 1,323 |  |  |  | 1,413 |
Diluted weighted-average shares outstanding |  |  | 36,549 |  |  |  | 36,323 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 + Details
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