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Reconciliation of Weighted Average Shares Outstanding (Tables) | 12 Months Ended
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Apr. 30, 2018
Reconciliation of Weighted Average Shares Outstanding [Abstract] |
Reconciliation of Shares used in Computation of Earnings Per Share | A reconciliation of the shares used in the computation of earnings per share for the years ended April 30 follows:
|  | 2018 |  |  | 2017 |  |  | 2016 |
Weighted Average Shares Outstanding |  |  | 57,181 |  |  |  | 57,531 |  |  |  | 58,253 |
Less: Unvested Restricted Shares |  |  | (138 | ) |  |  | (194 | ) |  |  | (255 | )
Shares Used for Basic Earnings Per Share |  |  | 57,043 |  |  |  | 57,337 |  |  |  | 57,998 |
Dilutive Effect of Stock Options and Other Stock Awards |  |  | 845 |  |  |  | 862 |  |  |  | 736 |
Shares Used for Diluted Earnings Per Share |  |  | 57,888 |  |  |  | 58,199 |  |  |  | 58,734 |

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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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