Accumulated Other Comprehensive Loss - Changes in Balance of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 28, 2017	Oct. 29, 2016	Oct. 28, 2017	Oct. 29, 2016
Schedule of Capitalization, Equity [Line Items]
Beginning Balance			$ 70,537
Other Comprehensive Income (Loss)	$ (108)	$ (162)	161	$ (21)
Ending Balance	62,240		62,240
Foreign Currency Translation Adjustments [Member]
Schedule of Capitalization, Equity [Line Items]
Beginning Balance			(1,048)
Other Comprehensive Income (Loss) before reclassification			210
Other Comprehensive Income (Loss)			210
Ending Balance	(838)		(838)
Unrealized Holding Gain/ (Loss) on Available for Sale Securities [Member]
Schedule of Capitalization, Equity [Line Items]
Beginning Balance			(8)
Other Comprehensive Income (Loss) before reclassification			5
Other Comprehensive Income (Loss)			5
Ending Balance	(3)		(3)
Net Unrealized Gain (Losses) on Cash Flow Hedges Translation Adjustments [Member]
Schedule of Capitalization, Equity [Line Items]
Other Comprehensive Income (Loss) before reclassification			(700)
Amounts reclassified from AOCI to Earnings			646
Other Comprehensive Income (Loss)			(54)
Ending Balance	(54)		(54)
Accumulated Other Comprehensive Income (Loss) [Member]
Schedule of Capitalization, Equity [Line Items]
Beginning Balance			(1,056)
Other Comprehensive Income (Loss) before reclassification			(485)
Amounts reclassified from AOCI to Earnings			646
Other Comprehensive Income (Loss)			161
Ending Balance	$ (895)		$ (895)