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Reconciliation of Weighted Average Shares Outstanding and Share Repurchases (Tables) | 9 Months Ended
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Jan. 31, 2018
Reconciliation of Weighted Average Shares Outstanding and Share Repurchases [Abstract] |
Reconciliation of Shares used in Computation of Earnings Per Share | A reconciliation of the shares used in the computation of earnings per share follows:
|  | Three Months Ended January 31, |  |  | Nine Months Ended January 31, |
|  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
Weighted average shares outstanding |  |  | 57,170 |  |  |  | 57,434 |  |  |  | 57,123 |  |  |  | 57,624 |
Less: Unvested restricted shares |  |  | (135 | ) |  |  | (210 | ) |  |  | (144 | ) |  |  | (219 | )
Shares used for basic earnings per share |  |  | 57,035 |  |  |  | 57,224 |  |  |  | 56,979 |  |  |  | 57,405 |
Dilutive effect of stock options and other stock awards |  |  | 836 |  |  |  | 788 |  |  |  | 757 |  |  |  | 776 |
Shares used for diluted earnings per share |  |  | 57,871 |  |  |  | 58,012 |  |  |  | 57,736 |  |  |  | 58,181 |

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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + 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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