Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Operating activities:
Net income	$ 48,024	$ 32,142	$ 20,025
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	17,202	13,469	9,599
Gain on conversion of note payable	0	0	(200)
Loss on debt extinguishment	244	266	1,594
Loss on disposal of property and equipment	175	515	58
Amortization of deferred financing costs	25	251	455
Warrant expense related to professional service providers for services rendered	0	0	43
Share-based compensation expense	5,931	10,092	12,324
Deferred income tax (benefit) expense	(3,063)	(5,074)	3,812
Changes in operating assets and liabilities:
Prepaid income taxes	(442)	(1,461)	(36)
Inventories	(26,275)	(28,546)	(22,041)
Prepaid expenses and other assets	(2,936)	(3,597)	(4,133)
Accounts payable	3,060	4,083	3,369
Income taxes payable	8,435	(1,076)	(2,056)
Accrued salaries and wages	2,603	(1,532)	(5,050)
Deferred rent	5,669	8,384	7,723
Other accrued expenses	2,778	3,271	4,877
Net cash provided by operating activities	61,430	31,187	30,363
Investing activities:
Capital expenditures	(32,322)	(25,931)	(22,890)
Net cash used in investing activities	(32,322)	(25,931)	(22,890)
Financing activities:
Borrowing on note payable under Term Loan Facility	0	0	100,000
Repayment of note payable under Term Loan Facility	(19,500)	(15,000)	(65,500)
Proceeds from Lines of Credit	7,000	0	0
Repayments of Lines of Credit	(7,000)	0	0
Cash paid for debt financing costs	0	(40)	(2,751)
Repayment of other note payable	0	0	(50)
Net proceeds from issuance of common stock	179	148	73,198
Proceeds from exercise of warrants and options to purchase common stock	1,481	1,484	239
Payments for Repurchase of Common Stock	(314)	0	0
Repurchase of unvested restricted shares related to stock option exercises	(1)	(7)	(17)
Dividends paid to shareholders	0	0	(99,451)
Excess tax benefit related to restricted shares and exercise of stock options and warrants	2,049	2,262	1,647
Net cash (used in) provided by financing activities	(16,106)	(11,153)	7,315
Net increase (decrease) in cash and cash equivalents	13,002	(5,897)	14,788
Cash and cash equivalents at beginning of year	50,184	56,081	41,293
Cash and cash equivalents at end of year	63,186	50,184	56,081
Supplemental disclosures of cash flow information:
Interest paid	129	1,259	2,056
Income taxes paid	21,587	25,039	10,803
Capital Expenditures Incurred but Not yet Paid	$ (1,673)	$ (606)	$ (3,770)