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Derivative Financial Instruments - Additional Information (Detail) - USD ($)
3 Months Ended 6 Months Ended
Jul. 31, 2016
Aug. 02, 2015
Jul. 31, 2016
Aug. 02, 2015
Derivative [Line Items]        
Reclassification from OCI to cost of goods sold $ 787,000   $ 787,000  
Gain or loss recognized for cash flow hedges due to hedge ineffectiveness $ 0 $ 0 $ 0 $ 0