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Quarterly Financial Information-Unaudited | 12 Months Ended
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Sep. 30, 2018
Quarterly Financial Information Disclosure [Abstract] |
Quarterly Financial Information-Unaudited | Quarterly Financial Information – Unaudited In the opinion of management, the following unaudited quarterly data for the fiscal years ended September 30, 2018 and October 1, 2017 reflect all adjustments necessary for a fair statement of the results of operations. As a result of the TCJA, we reduced our deferred tax liabilities and recorded a one-time deferred tax benefit of approximately $14.7 million in the first quarter of fiscal 2018. In the third quarter of fiscal 2018, we recognized losses of $3.4 million related to the divestiture of our non-core utility field services operations and other non-core assets. We settled a claim related to a fixed-price construction project completed in fiscal 2014 and recognized a reduction in revenue of $10.6 million and a related loss in operating income of $12.5 million in the fourth quarter of fiscal 2018.
| First Quarter |  | Second Quarter |  | Third Quarter |  | Fourth Quarter
| (in thousands, except per share data)
Fiscal Year 2018 |  |  |  |  |  |  |  |  |  |  |
Revenue | $ | 759,749 |  |  | $ | 700,262 |  |  | $ | 764,795 |  |  | $ | 739,343 |
Income from operations | 48,589 |  |  | 42,716 |  |  | 55,496 |  |  | 43,285 |
Net income attributable to Tetra Tech | 46,034 |  |  | 28,725 |  |  | 33,322 |  |  | 28,802 |
Earnings per share attributable to Tetra Tech: |  |  |  |  |  |  |  |  |  |  |
Basic | $ | 0.82 |  |  | $ | 0.51 |  |  | $ | 0.60 |  |  | $ | 0.52 |
Diluted | $ | 0.81 |  |  | $ | 0.51 |  |  | $ | 0.59 |  |  | $ | 0.51 |
Weighted-average common shares outstanding: |  |  |  |  |  |  |  |  |  |  |
Basic | 55,855 |  |  | 55,841 |  |  | 55,537 |  |  | 55,341 |
Diluted | 56,875 |  |  | 56,673 |  |  | 56,390 |  |  | 56,349 |
Fiscal Year 2017 |  |  |  |  |  |  |  |  |  |  |
Revenue | $ | 668,851 |  |  | $ | 663,781 |  |  | $ | 685,539 |  |  | $ | 735,188 |
Income from operations | 39,855 |  |  | 42,956 |  |  | 45,884 |  |  | 54,647 |
Net income attributable to Tetra Tech | 26,562 |  |  | 26,862 |  |  | 29,983 |  |  | 34,467 |
Earnings per share attributable to Tetra Tech: |  |  |  |  |  |  |  |  |  |  |
Basic | $ | 0.47 |  |  | $ | 0.47 |  |  | $ | 0.52 |  |  | $ | 0.61 |
Diluted | $ | 0.46 |  |  | $ | 0.46 |  |  | $ | 0.52 |  |  | $ | 0.60 |
Weighted-average common shares outstanding: |  |  |  |  |  |  |  |  |  |  |
Basic | 57,099 |  |  | 57,270 |  |  | 57,184 |  |  | 56,338 |
Diluted | 58,145 |  |  | 58,270 |  |  | 58,161 |  |  | 57,326 |

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- Definition The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -URI http://asc.fasb.org/topic&trid=2126967 + Details
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