Condensed Consolidated Balance Sheets (Parenthetical) (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 28, 2013	Dec. 29, 2012
Statement Condensed Consolidated Balance Sheets Parenthetical Unaudited [Line Items]
Accounts receivable, allowance for doubtful accounts	$ 206	$ 146
Convertible preferred stock, par value	$ 0.01	$ 0.01
Convertible preferred stock, shares authorized	2,000,000	2,000,000
Convertible preferred stock, shares issued	0	500,000
Convertible preferred stock, shares outstanding	0	500,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	30,000,000	30,000,000
Common stock, shares issued	9,818,012	8,452,971
Common stock, shares outstanding	9,818,012	8,452,971