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Earnings Per Share | 12 Months Ended
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Apr. 30, 2018
Earnings Per Share [Abstract] |
Earnings Per Share | Earnings Per Share The following table summarizes the computations of basic and diluted earnings per share:
| FISCAL YEARS ENDED APRIL 30
(in thousands, except per share amounts) | 2018 |  | 2017 |  | 2016
Numerator used in basic and diluted earnings per common share: |  |  |  |  |
Net income | $ | 63,141 |  |  | $ | 71,199 |  |  | $ | 58,723 |
Denominator: |  |  |  |  |
Denominator for basic earnings per common share - |  |  |  |  |
weighted-average shares | 16,631 |  |  | 16,259 |  |  | 16,256 |
Effect of dilutive securities: |  |  |  |  |
Stock options and restricted stock units | 114 |  |  | 139 |  |  | 186 |
Denominator for diluted earnings per common share - |  |  |  |  |
weighted-average shares and assumed conversions | 16,745 |  |  | 16,398 |  |  | 16,442 |
Net earnings per share |  |  |  |  |
Basic | $ | 3.80 |  |  | $ | 4.38 |  |  | $ | 3.61 |
Diluted | $ | 3.77 |  |  | $ | 4.34 |  |  | $ | 3.57 |
There were no potentially dilutive securities for the fiscal years ended April 30, 2018, 2017 and 2016, which were excluded from the calculation of net earnings per share.

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