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Income Taxes - Additional Information (Detail) (USD $) | 12 Months Ended |
--- | --- | ---
Jan. 31, 2015 | Feb. 01, 2014
Income Tax [Line Items] |  |
Remaining valuation allowance against the Company's deferred tax assets | 0 us-gaap_DeferredTaxAssetsValuationAllowance | $ 0 us-gaap_DeferredTaxAssetsValuationAllowance
Unrecognized tax benefits | 307,000 us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate | 307,000 us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
Accrued payment of interest and penalties associated with unrecognized tax benefits | 216,500 us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued | $ 186,000 us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued
Minimum [Member] |  |
Income Tax [Line Items] |  |
Income tax examination, year under examination | 2011 |
Maximum [Member] |  |
Income Tax [Line Items] |  |
Income tax examination, year under examination | 2013 |

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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 + Details
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- Definition Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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- Definition The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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