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Shareholders' Equity - Stock-based Compensation Expense (Details) - 2014 Incentive Plan - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jan. 28, 2023 | Jan. 29, 2022 | Jan. 28, 2023 | Jan. 29, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Stock-based compensation expense | $ 2.7 | $ 2.6 | $ 9.4 | $ 9.2
RSUs | Management |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Stock-based compensation expense | $ 2.7 | $ 2.6 | 7.8 | 7.7
RSUs | Deferred Director Awards |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Stock-based compensation expense |  |  | 1.0 | 0.8
RSAs | Director |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Stock-based compensation expense |  |  | $ 0.6 | $ 0.7

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