Income Taxes (Deferred Tax Assets and Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Jan. 31, 2015	Feb. 01, 2014
Deferred tax assets:
Inventories	$ 6,858us-gaap_DeferredTaxAssetsInventory	$ 5,430us-gaap_DeferredTaxAssetsInventory
Deferred revenue	189us-gaap_DeferredTaxAssetsDeferredIncome	142us-gaap_DeferredTaxAssetsDeferredIncome
Accrued bonus	915	194
Deferred rent	17,250	15,192
Other	2,512us-gaap_DeferredTaxAssetsOther	1,665us-gaap_DeferredTaxAssetsOther
Deferred tax assets	27,724us-gaap_DeferredTaxAssetsNet	22,623us-gaap_DeferredTaxAssetsNet
Deferred tax liabilities:
Property and equipment	(18,912)	(16,623)
Other	(931)us-gaap_DeferredTaxLiabilitiesOther	(1,182)us-gaap_DeferredTaxLiabilitiesOther
Deferred tax liabilities	(19,843)us-gaap_DeferredTaxLiabilities	(17,805)us-gaap_DeferredTaxLiabilities
Deferred tax assets (liabilities)	$ 7,881us-gaap_DeferredTaxAssetsLiabilitiesNet	$ 4,818us-gaap_DeferredTaxAssetsLiabilitiesNet

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from deferred income.

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