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Accumulated Other Comprehensive Loss - Changes in Balance of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 27, 2018	Oct. 28, 2017	Oct. 27, 2018	Oct. 28, 2017
Schedule of Capitalization, Equity [Line Items]
Beginning Balance			$ 63,647
Other Comprehensive Income (Loss)	$ (86)	$ (108)	(611)	$ 161
Ending Balance	67,408		67,408
Foreign Currency Translation Adjustments [Member]
Schedule of Capitalization, Equity [Line Items]
Beginning Balance			(181)
Other Comprehensive Income (Loss) before reclassification			(775)
Other Comprehensive Income (Loss)			(775)
Ending Balance	(956)		(956)
Unrealized Holding Gain/(Loss) on Available for Sale Securities [Member]
Schedule of Capitalization, Equity [Line Items]
Beginning Balance			(3)
Amounts reclassified from AOCI to Earnings			3
Other Comprehensive Income (Loss)			3
Ending Balance	0		0
Net Unrealized Gain/(Loss) on Cash Flow Hedges [Member]
Schedule of Capitalization, Equity [Line Items]
Beginning Balance			12
Other Comprehensive Income (Loss) before reclassification			766
Amounts reclassified from AOCI to Earnings			(605)
Other Comprehensive Income (Loss)			161
Ending Balance	173		173
Accumulated Other Comprehensive Income (Loss) [Member]
Schedule of Capitalization, Equity [Line Items]
Beginning Balance			(172)
Other Comprehensive Income (Loss) before reclassification			(9)
Amounts reclassified from AOCI to Earnings			(602)
Other Comprehensive Income (Loss)			(611)
Ending Balance	$ (783)		$ (783)

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Amount after tax, before reclassification adjustments of other comprehensive income (loss).

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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