Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Aug. 01, 2015	Aug. 02, 2014
Condensed Cash Flow Statements, Captions [Line Items]
Proceeds from Issuance Initial Public Offering	$ 81	$ 105
Operating activities:
Net income	11,339	11,400
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	10,232	8,042
Loss on debt extinguishment	0	244
Share-based compensation expense	5,460	2,441
Deferred income tax benefit	(2,102)	(1,608)
Other Operating Activities, Cash Flow Statement	28	284
Changes in operating assets and liabilities:
Prepaid income taxes	(4,755)	(750)
Inventories	(8,195)	(17,372)
Prepaid expenses and other assets	(6,215)	(4,665)
Accounts payable	17,396	11,836
Income taxes payable	(13,964)	(4,259)
Accrued salaries and wages	(1,251)	692
Deferred rent	7,475	5,025
Other accrued expenses	10,806	1,553
Net cash provided by operating activities	26,254	12,619
Investing activities:
Capital expenditures	(29,901)	(19,700)
Net cash used in investing activities	(29,901)	(19,700)
Financing activities:
Repayment of note payable under Term Loan Facility	0	(19,500)
Proceeds from exercise of options to purchase common stock	765	706
Excess tax benefit related to exercises of stock options	531	1,136
Net cash provided by (used in) financing activities	1,377	(17,553)
Net decrease in cash and cash equivalents	(2,270)	(24,634)
Cash and cash equivalents at beginning of period	63,186
Cash and cash equivalents at end of period	60,916	25,550
Supplemental disclosures of cash flow information:
Capital Expenditures Incurred but Not yet Paid	$ (6,544)	$ (891)