Organization and Summary of Significant Accounting Policies (Details 3) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 29, 2013	Jun. 30, 2012	Jun. 29, 2013	Jun. 30, 2012
Earnings per common share
Anti-dilutive options excluded from computation of diluted earnings per share (in shares)	274,222	256,169	217,403	282,038
Basic Earnings Per Share:
Net income	$ 1,407	$ 1,623	$ 2,463	$ 3,345
Weighted average number of common shares	19,307,000	18,899,000	19,257,000	18,590,000
Earnings per common share (in dollars per share)	$ 0.07	$ 0.09	$ 0.13	$ 0.18
Diluted Earnings Per Share:
Net income	$ 1,407	$ 1,623	$ 2,463	$ 3,345
Weighted average number of common shares	19,307,000	18,899,000	19,257,000	18,590,000
Incremental shares from assumed conversions of stock options and non-vested shares of restricted stock	395,000	656,000	441,000	870,000
Adjusted weighted average number of common shares	19,702,000	19,555,000	19,698,000	19,460,000
Earnings per common share (in dollars per share)	$ 0.07	$ 0.08	$ 0.13	$ 0.17