Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Jul. 30, 2011	Jan. 29, 2011
Condensed Consolidated Balance Sheets
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	18,733,837	18,703,086
Common stock, shares outstanding	18,733,837	18,703,086