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Net Income Per Share (Tables) | 12 Months Ended
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Jul. 31, 2011
Earnings Per Share [Abstract] |
Weighted average number of Basic and dilutive shares |
|  |  |  | Years Ended July 31, |
--- | --- | --- | --- | --- | ---
|  |  |  | 2011 |  | 2010 |  | 2009
Weighted average common shares outstanding |  |  |  |  | 75,649 |  |  |  | 84,165 |  |  |  | 83,537 |
Effect of dilutive securities-stock options |  |  |  |  | 1,027 |  |  |  | 862 |  |  |  | 1,393 |
Diluted weighted average common shares outstanding |  |  |  |  | 76,676 |  |  |  | 85,027 |  |  |  | 84,930 |

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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 260 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph -Name Accounting Standards Codification -Paragraph 1 -Section 50 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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