Accumulated Other Comprehensive Loss - Changes in Balance of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 28, 2018	Jul. 29, 2017	Jul. 28, 2018	Jul. 29, 2017
Schedule of Capitalization, Equity [Line Items]
Beginning Balance			$ 63,647
Other Comprehensive Income (Loss)	$ (362)	$ 526	(525)	$ 269
Ending Balance	65,488		65,488
Foreign Currency Translation Adjustments [Member]
Schedule of Capitalization, Equity [Line Items]
Beginning Balance			(178)
Other Comprehensive Income (Loss) before reclassification			(618)
Other Comprehensive Income (Loss)			(618)
Ending Balance	(796)		(796)
Unrealized Holding Gain/(Loss) on Available for Sale Securities [Member]
Schedule of Capitalization, Equity [Line Items]
Beginning Balance			(6)
Amounts reclassified from AOCI to Earnings			3
Other Comprehensive Income (Loss)			3
Ending Balance	(3)		(3)
Net Unrealized Gain/(Loss) on Cash Flow Hedges [Member]
Schedule of Capitalization, Equity [Line Items]
Beginning Balance			12
Other Comprehensive Income (Loss) before reclassification			545
Amounts reclassified from AOCI to Earnings			(455)
Other Comprehensive Income (Loss)			90
Ending Balance	102		102
Accumulated Other Comprehensive Income (Loss) [Member]
Schedule of Capitalization, Equity [Line Items]
Beginning Balance			(172)
Other Comprehensive Income (Loss) before reclassification			(73)
Amounts reclassified from AOCI to Earnings			(452)
Other Comprehensive Income (Loss)			(525)
Ending Balance	$ (697)		$ (697)