Benefit Plans (Detail) - Schedule for estimation of fair value for the stock based awards granted (USD $)	12 Months Ended
	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Dividend yield	0.00%	0.00%	0.00%
Weighted average fair value per share of options granted during the year (in Dollars per share)	$ 1.70	$ 1.27	$ 1.33
Minimum [Member]
Expected volatility	68.50%	69.90%	76.40%
Risk-free interest rate	0.69%	1.42%	1.99%
Expected option life in years	4 years 335 days	4 years 335 days	4 years 10 days
Maximum [Member]
Expected volatility	76.80%	75.40%	81.90%
Risk-free interest rate	0.98%	2.81%	2.13%
Expected option life in years	6 years 357 days	6 years 357 days	5 years 164 days