Income Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 25, 2012
Income Per Share [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	1,400,000	2,000,000
Net income	$ 4,934	$ 6,733
Basic income per share	$ 0.18	$ 0.25
Weighted average shares outstanding, basic	27,311,000	27,170,000
Diluted income per share	$ 0.18	$ 0.25
Weighted average dilutive stock options	263,000	157,000
Weighted average shares outstanding, diluted	27,574,000	27,327,000