Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	May 02, 2015	Jan. 31, 2015	May 03, 2014
Statement of Financial Position [Abstract]
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	$ 63,573	$ 59,385	$ 47,526
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01	$ 0.01
Common stock, shares authorized	120,000,000us-gaap_CommonStockSharesAuthorized	120,000,000us-gaap_CommonStockSharesAuthorized	120,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued	54,478,408us-gaap_CommonStockSharesIssued	54,420,228us-gaap_CommonStockSharesIssued	54,267,222us-gaap_CommonStockSharesIssued
Common stock, shares outstanding	54,478,408us-gaap_CommonStockSharesOutstanding	54,420,228us-gaap_CommonStockSharesOutstanding	54,267,222us-gaap_CommonStockSharesOutstanding

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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