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Goodwill and Intangible Assets Schedule of Finite-Lived Intangible Assets, Future Amortization Expense (Details) - USD ($)
$ in Thousands
Apr. 27, 2019
Apr. 28, 2018
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]    
2020 $ 1,495  
2021 1,492  
2022 485  
2023 288  
2024 287  
Thereafter 859  
Finite-Lived Intangible Assets, Net $ 4,906 $ 3,682