Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)	Oct. 01, 2011	Jan. 01, 2011	Oct. 02, 2010
Shareholders' equity:
Preferred stock, par value
Preferred stock, shares authorized	10,000,000	10,000,000	10,000,000
Preferred stock, shares issued
Common stock, par value
Common stock, shares authorized	40,000,000	40,000,000	40,000,000
Common stock, shares issued	25,431,076	25,346,412	25,106,848
Common stock, shares outstanding	25,431,076	25,346,412	25,106,848