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Basic and Diluted Earnings Per Share (Tables) | 12 Months Ended
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Apr. 30, 2012
Summary Of Basic And Diluted Earnings Per Share | The following table summarizes basic and diluted earnings per share calculations:
|  | Year Ended April 30, |
|  | 2012 |  |  | 2011 |  |  | 2010 |
|  | (in thousands, except per share data) |
Net earnings attributable to common stockholders |  | $ | 54,303 |  |  | $ | 58,874 |  |  | $ | 5,298 |
Weighted-average common shares outstanding: |  |  |  |  |  |  |  |  |  |  |  |
Basic weighted-average number of common shares outstanding |  |  | 46,397 |  |  |  | 45,205 |  |  |  | 44,413 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |
Restricted stock |  |  | 582 |  |  |  | 646 |  |  |  | 587 |
Stock options |  |  | 267 |  |  |  | 425 |  |  |  | 401 |
ESPP |  |  | 15 |  |  |  | 4 |  |  |  | 3 |
Warrants |  |  | — |  |  |  | — |  |  |  | 53 |
Diluted weighted-average number of common shares outstanding |  |  | 47,261 |  |  |  | 46,280 |  |  |  | 45,457 |
Net earnings per common share: |  |  |  |  |  |  |  |  |  |  |  |
Basic earnings per share |  | $ | 1.17 |  |  | $ | 1.30 |  |  | $ | 0.12 |
Diluted earnings per share |  | $ | 1.15 |  |  | $ | 1.27 |  |  | $ | 0.12 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations. + References No definition available. + Details
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