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Effect of Derivative Instruments in Condensed Consolidated Financial Statements (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jul. 31, 2016
Aug. 02, 2015
Jul. 31, 2016
Aug. 02, 2015
Derivative [Line Items]        
Net gain (loss) recognized in OCI $ 1,434 $ 1,084 $ (1,499) $ 571
Net gain reclassified from OCI into cost of goods sold 50 643 459 911
Net foreign exchange gain (loss) recognized in selling, general and administrative expense, Instruments designated as cash flow hedges [1] (13) (26) 10 (42)
Net foreign exchange gain (loss) recognized in selling, general and administrative expense, Instruments not designated or de-designated [2] $ 309 $ 2,023 $ (3,033) $ 2,405
[1] Changes in fair value of the forward contract related to interest charges (or forward points).
[2] Changes in fair value for instruments not designated as cash flow hedges as well as de-designated instruments.