Effect of Derivative Instruments in Condensed Consolidated Financial Statements (Detail) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Oct. 28, 2018	Oct. 29, 2017	Oct. 28, 2018	Oct. 29, 2017
Derivative [Line Items]
Net gain (loss) recognized in OCI		$ (88)	$ 506	$ 1,442	$ (190)
Net gain (loss) reclassified from OCI into cost of goods sold		163	173	90	185
Net foreign exchange gain (loss) recognized in selling, general and administrative expenses, instruments designated as cash flow hedges	[1]	16	20	49	75
Net foreign exchange gain (loss) recognized in selling, general and administrative expenses, instruments not designated or de-designated		$ 105	$ 1,752	$ 4,048	$ (1,096)

[1] Changes in fair value of the forward contract related to interest charges (or forward points).