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Basic and Diluted Earnings Per Share (Tables) | 6 Months Ended
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Oct. 31, 2013
Basic And Diluted Earnings Per Share | The following table summarizes basic and diluted earnings per share calculations:
|  | Three Months Ended October 31, |  |  | Six Months Ended October 31, |
|  | 2013 |  |  | 2012 |  |  | 2013 |  |  | 2012 |
|  | (in thousands, except per share data) |
Net earnings attributable to common stockholders |  | $ | 18,759 |  |  | $ | 1,196 |  |  | $ | 30,176 |  |  | $ | 11,614 |
Weighted-average common shares outstanding: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic weighted-average number of common shares outstanding |  |  | 48,118 |  |  |  | 47,269 |  |  |  | 47,892 |  |  |  | 47,040 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted stock |  |  | 484 |  |  |  | 397 |  |  |  | 643 |  |  |  | 442 |
Stock options |  |  | 214 |  |  |  | 168 |  |  |  | 213 |  |  |  | 176 |
Diluted weighted-average number of common shares outstanding |  |  | 48,816 |  |  |  | 47,834 |  |  |  | 48,748 |  |  |  | 47,658 |
Net earnings per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic earnings per share |  | $ | 0.39 |  |  | $ | 0.03 |  |  | $ | 0.63 |  |  | $ | 0.25 |
Diluted earnings per share |  | $ | 0.38 |  |  | $ | 0.03 |  |  | $ | 0.62 |  |  | $ | 0.24 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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