| Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands | Jan. 28, 2017 | Jan. 30, 2016 | 
|---|---|---|
| Income Tax Disclosure [Abstract] | ||
| Credit carryforwards for state income tax | $ 398 | $ 441 | 
| Reserve for uncertain tax positions | $ 3,305 | $ 2,262 | 
| X | ||||||||||
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible state and local operating loss carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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| X | ||||||||||
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- References No definition available. 
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| X | ||||||||||
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- Definition Amount recognized for uncertainty in income taxes classified as current. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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