Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 29, 2013	Dec. 29, 2012
Statement of Financial Position [Abstract]
Allowance for doubtful accounts, accounts receivable	$ 95	$ 124
Preferred stock, shares authorized	2,000,000	2,000,000
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares outstanding	0	0
Common stock, shares authorized	40,000,000	40,000,000
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares outstanding	26,239,642	26,094,580