Significant Accounting Policies Derivative Liability Significant Assumptions (Details) (Series A Preferred Stock [Member], USD $)	3 Months Ended	12 Months Ended
	May 04, 2013	Feb. 02, 2013
Derivative Assumptions [Line Items]
Conversion exercise price per share (in dollars per share)	$ 3.40
Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Derivative Assumptions [Line Items]
Closing price of Company's common stock (in dollars per share)	$ 3.70	$ 3.69
Conversion exercise price per share (in dollars per share)	$ 3.40	$ 3.40
Risk free interest rate	1.60%	1.90%
Expected volatility	77.80%	84.90%
Expected life (in years)	9 years 2 months 7 days	9 years 5 months 7 days
Expected dividend payments (in dollars per share)	$ 0	$ 0