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Income Taxes - Additional Information (Detail) (USD $)
3 Months Ended
May 03, 2014
May 04, 2013
Jan. 31, 2014
Income Tax Disclosure [Abstract]      
Income tax expense $ 449,000 $ (319,000)  
Expense included in income tax 549,000    
Pretax income and benefit 100,000    
Cumulative unrecognized tax benefits $ 651,000   $ 715,000