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Accumulated Other Comprehensive Loss - Changes in Balance of Accumulated Other Comprehensive Loss (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Apr. 28, 2018
Apr. 29, 2017
Schedule of Capitalization, Equity [Line Items]    
Beginning Balance $ 63,647  
Other Comprehensive Income (Loss) (163) $ (257)
Ending Balance 64,630  
Foreign Currency Translation Adjustments [Member]    
Schedule of Capitalization, Equity [Line Items]    
Beginning Balance (178)  
Other Comprehensive Income (Loss) before reclassification (269)  
Other Comprehensive Income (Loss) (269)  
Ending Balance (447)  
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 6  
Other Comprehensive Income (Loss) 6  
Accumulated Other Comprehensive Income (Loss) [Member]    
Schedule of Capitalization, Equity [Line Items]    
Beginning Balance (172)  
Other Comprehensive Income (Loss) before reclassification 37  
Amounts reclassified from AOCI to Earnings (200)  
Other Comprehensive Income (Loss) (163)  
Ending Balance (335)  
Net Unrealized Gain/(Loss) on Cash Flow Hedges [Member]    
Schedule of Capitalization, Equity [Line Items]    
Beginning Balance 12  
Other Comprehensive Income (Loss) before reclassification 300  
Amounts reclassified from AOCI to Earnings (200)  
Other Comprehensive Income (Loss) 100  
Ending Balance $ 112