XML 47 R35.htm IDEA: XBRL DOCUMENT v3.7.0.1
Derivative Financial Instruments - Additional Information (Detail) - USD ($)
3 Months Ended 6 Months Ended
Jul. 30, 2017
Jul. 31, 2016
Jul. 30, 2017
Jul. 31, 2016
Derivative [Line Items]        
Reclassification from OCI to cost of goods sold $ 634,000   $ 634,000  
Gain or loss recognized for cash flow hedges due to hedge ineffectiveness $ 0 $ 0 $ 0 $ 0