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Effect of Derivative Instruments in Condensed Consolidated Financial Statements (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Apr. 30, 2017
May 01, 2016
Derivative [Line Items]    
Net gain (loss) recognized in OCI $ 892 $ (2,933)
Net gain (loss) reclassified from OCI to cost of goods sold 21 409
Net foreign exchange gain (loss) recognized in selling, general and administrative expenses, Instruments designated as cash flow hedges [1] 8 23
Net foreign exchange gain (loss) recognized in selling, general and administrative expenses, Instruments not designated or de-designated $ 341 $ (3,342)
[1] Changes in fair value of the forward contract related to interest charges (or forward points).