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Net Income Per Common Share | 12 Months Ended
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Apr. 30, 2017
Earnings Per Share [Abstract] |
Net Income Per Common Share | NET INCOME PER COMMON SHARE Computations for basic and diluted earnings per common share are presented below:
| Years ended April 30,
| 2017 |  | 2016 |  | 2015
Basic |  |  |  |  |
Net income | $ | 177,485 |  |  | $ | 225,982 |  |  | $ | 180,628 |
Weighted average shares outstanding-basic | 39,124,665 |  |  | 39,016,299 |  |  | 38,743,227 |
Basic earnings per common share | $ | 4.54 |  |  | $ | 5.79 |  |  | $ | 4.66 |
Diluted |  |  |  |  |
Net income | $ | 177,485 |  |  | $ | 225,982 |  |  | $ | 180,628 |
Weighted-average shares outstanding-basic | 39,124,665 |  |  | 39,016,299 |  |  | 38,743,227 |
Plus effect of stock options and restricted stock units | 454,333 |  |  | 405,900 |  |  | 360,606 |
Weighted-average shares outstanding-diluted | 39,578,998 |  |  | 39,422,199 |  |  | 39,103,833 |
Diluted earnings per common share | $ | 4.48 |  |  | $ | 5.73 |  |  | $ | 4.62 |
There were no options considered antidilutive; therefore, all options were included in the computation of dilutive earnings per share for fiscal 2017, 2016, and fiscal 2015, respectively.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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