CONDENSED CONSOLIDATED BALANCE SHEETS [Parenthetical] (USD $) In Thousands, except Per Share data, unless otherwise specified	Jun. 28, 2013	Dec. 28, 2012
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	60,000	60,000
Common stock, shares issued	36,628	36,423
Common stock, shares outstanding	36,628	36,423