Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Oct. 01, 2011	Jan. 01, 2011	Oct. 02, 2010
Statement of Financial Position [Abstract]
Preferred stock, par value	$ 0.001	$ 0.001	$ 0.001
Preferred stock, shares authorized	1,000,000	1,000,000	1,000,000
Preferred stock, shares outstanding	0	0	0
Common stock, par value	$ 0.001	$ 0.001	$ 0.001
Common stock, shares authorized	50,000,000	50,000,000	50,000,000
Common stock, shares issued	22,842,299	22,656,083	22,600,410
Common stock, shares outstanding	22,811,409	22,625,193	22,569,520