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Earnings per Share ("EPS") | 3 Months Ended
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Jan. 02, 2022
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:
| Three Months Ended |  |
| January 2, 2022 |  | December 27, 2020 |  |  |  |
| (in thousands, except per share data)
Net income attributable to Tetra Tech | $ | 68,489 |  |  | $ | 52,436 |  |  |  |  |
Weighted-average common shares outstanding – basic | 53,937 |  |  | 53,927 |  |  |  |  |
Effect of dilutive stock options and unvested restricted stock | 640 |  |  | 710 |  |  |  |  |
Weighted-average common shares outstanding – diluted | 54,577 |  |  | 54,637 |  |  |  |  |
Earnings per share attributable to Tetra Tech: |  |  |  |  |  |  |
Basic | $ | 1.27 |  |  | $ | 0.97 |  |  |  |  |
Diluted | $ | 1.25 |  |  | $ | 0.96 |  |  |  |  |

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