XML 59 R43.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Quarterly Financial Information-Unaudited (Tables) | 12 Months Ended
--- | ---
Oct. 01, 2017
Quarterly Financial Information Disclosure [Abstract] |
Schedule of unaudited quarterly data |
| First Quarter |  | Second Quarter |  | Third Quarter |  | Fourth Quarter
| (in thousands, except per share data)
Fiscal Year 2017 |  |  |  |  |  |  |  |  |  |  |
Revenue | $ | 668,851 |  |  | $ | 663,781 |  |  | $ | 685,539 |  |  | $ | 735,188 |
Operating income | 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 (1): |  |  |  |  |  |  |  |  |  |  |
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 |
Fiscal Year 2016 |  |  |  |  |  |  |  |  |  |  |
Revenue | $ | 560,708 |  |  | $ | 627,384 |  |  | $ | 666,869 |  |  | $ | 728,508 |
Operating income | 32,930 |  |  | 16,650 |  |  | 39,085 |  |  | 47,190 |
Net income attributable to Tetra Tech | 23,239 |  |  | 3,744 |  |  | 25,694 |  |  | 31,106 |
Earnings per share attributable to Tetra Tech (1): |  |  |  |  |  |  |  |  |  |  |
Basic | $ | 0.39 |  |  | $ | 0.06 |  |  | $ | 0.44 |  |  | $ | 0.54 |
Diluted | $ | 0.39 |  |  | $ | 0.06 |  |  | $ | 0.44 |  |  | $ | 0.53 |
Weighted-average common shares outstanding: |  |  |  |  |  |  |  |  |  |  |
Basic | 59,058 |  |  | 58,451 |  |  | 57,796 |  |  | 57,309 |
Diluted | 59,793 |  |  | 59,131 |  |  | 58,616 |  |  | 58,192 |
(1) | The sum of the quarterly EPS may not add up to the full-year EPS due to rounding.

X
- References No definition available. + Details
Name: | us-gaap_QuarterlyFinancialInformationDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=84173487&loc=d3e1280-108306 + Details
Name: | us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration