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Commitments and Contingencies (Details) - USD ($)
$ in Thousands
12 Months Ended
Jan. 28, 2017
Jan. 30, 2016
Jan. 31, 2015
Operating Leases      
Fiscal 2018 $ 2,488    
Fiscal 2019 2,422    
Fiscal 2020 2,351    
Fiscal 2021 2,118    
Fiscal 2022 and thereafter 8,893    
Total future minimum lease payments 18,272    
Rent and operating lease expense      
Rent expense 584 $ 414 $ 387
Total operating lease expenses, excluding rent $ 89 $ 95 $ 84