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Commitments and Contingencies - Purchase Commitments (Details)
$ in Thousands
Jul. 28, 2018
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
Conditional purchase commitment $ 275
Purchase Obligation, Fiscal Year Maturity  
2019 4,016
2020 3,661
2021 2,051
2022 143
2023 113
Thereafter 267
Total $ 10,251