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Restructuring and Asset Impairment Charges - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended
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Apr. 27, 2024 | Apr. 29, 2023 | Apr. 30, 2022
Restructuring Cost And Reserve [Line Items] |  |  |
Asset impairment charges | $ 2.3 | $ 0.7 | $ 3.1
Expected additional restructuring costs | 0.7 | $ 0.0 |
Dabir Surfaces Business |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Asset impairment charges | 0.6 |  |
Selling and Administrative Expenses [Member] |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Severance costs | $ 0.5 |  |

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