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Earnings Per Share (Narrative) (Details) - USD ($) | 12 Months Ended |  |
--- | --- | --- | ---
Apr. 30, 2022 | Apr. 30, 2021 | Apr. 30, 2020 | May 25, 2021 | Aug. 22, 2019
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |
Potentially dilutive shares | 48,379 | 0 | 0 |  |
Treasury Stock, Shares, Acquired | 299,781 | 200,046 | 0 |  |
Share Repurchase Program 2019 |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |
Stock Repurchase Program, Authorized Amount |  |  |  |  | $ 50,000,000
Treasury Stock, Value, Acquired, Cost Method |  | $ 20,000,000 |  |  |
Stock Repurchase Program Cancelled Authorized Repurchase Amount |  |  |  | $ 30,000,000 |
Share Repurchase Program 2021 |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |
Stock Repurchase Program, Authorized Amount |  |  |  | $ 100,000,000 |
Stock Repurchase Program, Remaining Authorized Repurchase Amount | $ 75,000,000 |  |  |  |
Treasury Stock, Value, Acquired, Cost Method | $ 25,000,000 |  |  |  |

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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