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Basic and Diluted Earnings Per Share (Tables) | 9 Months Ended
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Jan. 31, 2014
Basic And Diluted Earnings Per Share | The following table summarizes basic and diluted earnings per share calculations:
|  | Three Months Ended January 31, |  |  | Nine Months Ended January 31, |
|  | 2014 |  |  | 2013 |  |  | 2014 |  |  | 2013 |
|  | (in thousands, except per share data) |
Net earnings attributable to common stockholders |  | $ | 21,304 |  |  | $ | 9,482 |  |  | $ | 51,480 |  |  | $ | 21,096 |
Weighted-average common shares outstanding: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic weighted-average number of common shares outstanding |  |  | 48,341 |  |  |  | 47,367 |  |  |  | 48,041 |  |  |  | 47,149 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted stock |  |  | 651 |  |  |  | 491 |  |  |  | 728 |  |  |  | 426 |
Stock options |  |  | 189 |  |  |  | 157 |  |  |  | 208 |  |  |  | 167 |
Diluted weighted-average number of common shares outstanding |  |  | 49,181 |  |  |  | 48,015 |  |  |  | 48,977 |  |  |  | 47,742 |
Net earnings per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic earnings per share |  | $ | 0.44 |  |  | $ | 0.20 |  |  | $ | 1.07 |  |  | $ | 0.45 |
Diluted earnings per share |  | $ | 0.43 |  |  | $ | 0.20 |  |  | $ | 1.05 |  |  | $ | 0.44 |

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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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