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Segment Reporting - Additional Information (Detail)
3 Months Ended 6 Months Ended
Jul. 31, 2015
Customer
Outlet
Store
Brand
Jul. 31, 2014
Jul. 31, 2015
Customer
Outlet
Store
Brand
Segment
Jul. 31, 2014
Segment Reporting Information [Line Items]        
Number of major customers exceeding ten percentage thresholds | Customer 0   0  
Retail Operations        
Segment Reporting Information [Line Items]        
Number of reporting segments     2  
Number of brands | Brand 5   5  
Number of stores | Store 556   556  
Percentage of net sales 91.70% 92.70% 92.20% 92.90%
Wholesale Operations        
Segment Reporting Information [Line Items]        
Number of stores | Outlet 1,600   1,600