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Intangible Assets - Additional Information (Detail) (USD $)
3 Months Ended
May 02, 2015
May 03, 2014
Impairment of Intangible Assets (Excluding Goodwill) [Abstract]    
Impairments of intangible assets $ 0us-gaap_ImpairmentOfIntangibleAssetsFinitelived $ 0us-gaap_ImpairmentOfIntangibleAssetsFinitelived
Amortization expense $ 89,000us-gaap_AmortizationOfIntangibleAssets $ 175,000us-gaap_AmortizationOfIntangibleAssets