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Commitments and Contingencies - Purchase Commitments (Details)
$ in Thousands
Apr. 28, 2018
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
Conditional purchase commitment $ 350
Purchase Obligation, Fiscal Year Maturity  
2019 2,735
2020 1,898
2021 313
2022 143
2023 113
Thereafter 266
Total $ 5,468