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Summary of Significant Accounting Policies - Property And Equipment (Details) - USD ($)
$ in Thousands
3 Months Ended
Apr. 30, 2016
May. 02, 2015
Jan. 30, 2016
Property and Equipment      
Less: Accumulated depreciation $ (1,759)   $ (1,631)
Property and Equipment, net 1,068   1,151
Depreciation expense 127 $ 96  
Computer Equipment      
Property and Equipment      
Property and Equipment, gross $ 583   561
Estimated useful life 3 years    
Software      
Property and Equipment      
Property and Equipment, gross $ 79   79
Estimated useful life 3 years    
Furniture and Fixtures      
Property and Equipment      
Property and Equipment, gross $ 1,729   1,706
Furniture and Fixtures | Maximum      
Property and Equipment      
Estimated useful life 7 years    
Leasehold Improvements      
Property and Equipment      
Property and Equipment, gross $ 436   $ 436
Leasehold Improvements | Maximum      
Property and Equipment      
Estimated useful life 5 years