Stockholders Equity and Stock-Based Compensation (Tables)

6 Months Ended

Aug. 03, 2013

Equity [Abstract]

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	Thirteen Weeks Ended		Twenty-Six Weeks Ended
	August 3, 2013	July 28, 2012	August 3, 2013	July 28, 2012
Expected dividend yield	N/A	—%	—%	—%
Expected volatility	N/A	74.9%	75.6%	73.6%
Risk-free interest rate	N/A	0.7%	0.76 - 0.84%	1.0%
Expected term	N/A	5.0 years	5.0 years	4.9 years

Summary of stock option activity

The following tables present a summary of stock option activity for the twenty-six weeks ended August 3, 2013: 

	Number of Shares		Weighted Average Exercise Price		Aggregate Intrinsic Value (in thousands)		Weighted Average Remaining Contractual Life
Outstanding, beginning of period	3,696,094		$	4.89
Granted	91,633		6.25
Exercised	(34,795	)	2.69
Canceled - Vested	(65,471	)	11.70
Canceled - Unvested (Forfeited)	(53,551	)	3.62
Outstanding, end of period	3,633,910		$	4.84	$	10,253	8.35 years
Vested and expected to vest, end of period	3,182,273		$	5.04	$	8,756	8.23 years
Exercisable, end of period	1,079,853		$	8.16	$	1,795	6.43 years

	Number of Shares		Weighted Average Grant Date Fair Value
Nonvested, beginning of period	2,865,360		$	1.83
Granted	91,633		3.82
Vested	(349,385	)	1.97
Forfeited	(53,551	)	1.90
Nonvested, end of period	2,554,057		1.88

Summary of restricted stock activity

The following table presents a summary of restricted stock activity for the twenty-six weeks ended August 3, 2013: 

	Number of Shares		Weighted Average Grant Date Fair Value		Aggregate Intrinsic Value (in thousands)
Nonvested, beginning of period	819,902		$	2.89
Granted	128,761		6.52
Vested	(84,624	)	4.66
Forfeited	(692,344	)	2.54
Nonvested, end of period	171,695		6.16		$	1,159