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Quarterly Information (Tables) | 12 Months Ended
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Jul. 31, 2012
Quarterly Financial Information Disclosure [Abstract] |
Schedule of quarterly financial information |
|  |  |  | Fiscal Quarter |
--- | --- | --- | --- | --- | ---
Fiscal Year 2012 |  |  |  | First |  | Second |  | Third |  | Fourth
Revenues |  |  |  | $ | 225,626 |  |  | $ | 227,904 |  |  | $ | 244,105 |  |  | $ | 226,556 |
Operating income |  |  |  | $ | 65,376 |  |  | $ | 63,539 |  |  | $ | 87,944 |  |  | $ | 69,494 |
Income before income taxes |  |  |  | $ | 63,815 |  |  | $ | 62,216 |  |  | $ | 84,547 |  |  | $ | 67,478 |
Net income |  |  |  | $ | 41,149 |  |  | $ | 40,603 |  |  | $ | 55,471 |  |  | $ | 44,896 |
Basic net income per share |  |  |  | $ | 0.32 |  |  | $ | 0.32 |  |  | $ | 0.44 |  |  | $ | 0.36 |
Diluted net income per share |  |  |  | $ | 0.31 |  |  | $ | 0.31 |  |  | $ | 0.43 |  |  | $ | 0.35 |
|  |  |  | Fiscal Quarter |
--- | --- | --- | --- | --- | ---
Fiscal Year 2011(2) |  |  |  | First |  | Second |  | Third |  | Fourth
Revenues |  |  |  | $ | 212,667 |  |  | $ | 207,380 |  |  | $ | 236,755 |  |  | $ | 215,443 |
Operating income |  |  |  | $ | 59,594 |  |  | $ | 60,195 |  |  | $ | 82,044 |  |  | $ | 63,456 |
Income before income taxes |  |  |  | $ | 60,163 |  |  | $ | 60,717 |  |  | $ | 80,350 |  |  | $ | 62,645 |
Net income |  |  |  | $ | 37,823 |  |  | $ | 37,893 |  |  | $ | 50,136 |  |  | $ | 40,521 |
Basic net income per share |  |  |  | $ | 0.23 |  |  | $ | 0.24 |  |  | $ | 0.36 |  |  | $ | 0.30 |
Diluted net income per share |  |  |  | $ | 0.23 |  |  | $ | 0.23 |  |  | $ | 0.35 |  |  | $ | 0.29 |
(1) |  | Earnings per share were computed independently for each of the periods presented; therefore, the sum of the earnings per share amounts for the quarters may not equal the total for the year.
(2) |  | Fiscal 2011 results are impacted from the adoption of ASU 2009-13.
(3) |  | All per share amounts have been revised to reflect the impact of the two-for-one stock split effected in the form of a stock dividend, which issued one additional share of common stock to each share of common stock outstanding on March 23, 2012.

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- Definition Tabular disclosure of the quarterly financial data in the annual financial statements. The disclosure includes financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income (loss) before extraordinary items and 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=20225539&loc=d3e1280-108306 + Details
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