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Nature of Business and Summary of Significant Accounting Policies Recent Accounting Pronouncements (Details) $ in Thousands | 12 Months Ended
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Apr. 27, 2019 USD ($)
Accounting Changes and Error Corrections [Abstract] |
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification | $ 7,134

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- Definition Represents the quantification of the effect of adopting the new accounting standard or change in accounting principle expected by the entity to have a significant effect on the entity's financial statements. + References No definition available. + Details
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