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Commitments and Contingencies - Purchase Commitments (Details)
$ in Thousands
Jul. 29, 2017
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
Conditional purchase commitment $ 375
Purchase Obligation, Fiscal Year Maturity  
2018 1,589
2019 1,030
2020 253
2021 253
2022 143
Thereafter 380
Total $ 3,648