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Earnings per Share ("EPS") | 9 Months Ended
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Jul. 02, 2023
Earnings Per Share [Abstract] |
Earnings per Share ("EPS") | Earnings per Share (“EPS”)Basic EPS is computed by dividing net income available to common stockholders by the weighted-average number of common shares outstanding, less unvested restricted stock for the period. Diluted EPS is computed by dividing net income by the weighted-average number of common shares outstanding and dilutive potential common shares for the period. Potential common shares include the weighted-average dilutive effects of outstanding stock options and unvested restricted stock using the treasury stock method. The following table presents the number of weighted-average shares used to compute basic and diluted EPS (in thousands, except per share data):
| Three Months Ended |  | Nine Months Ended
| July 2, 2023 |  | July 3, 2022 |  | July 2, 2023 |  | July 3, 2022
Net income attributable to Tetra Tech | $ | 60,235 |  |  | $ | 58,650 |  |  | $ | 219,771 |  |  | $ | 180,179 |
Weighted-average common shares outstanding – basic | 53,231 |  |  | 53,507 |  |  | 53,188 |  |  | 53,777 |
Effect of dilutive stock options and unvested restricted stock | 422 |  |  | 499 |  |  | 427 |  |  | 551 |
Weighted-average common shares outstanding – diluted | 53,653 |  |  | 54,006 |  |  | 53,615 |  |  | 54,328 |
Earnings per share attributable to Tetra Tech: |  |  |  |  |  |  |
Basic | $ | 1.13 |  |  | $ | 1.10 |  |  | $ | 4.13 |  |  | $ | 3.35 |
Diluted | $ | 1.12 |  |  | $ | 1.09 |  |  | $ | 4.10 |  |  | $ | 3.32 |

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