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Net Income Per Share (Computation Basic And Diluted Net Income Per Share) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Apr. 01, 2012
Earnings Per Share [Abstract]    
Net income $ 832 $ 154
Weighted average common shares outstanding 12,482 13,853
Basic net income per share $ 0.07 $ 0.01
Dilutive effect of stock options and restricted stock units 211 261
Common stock and common stock equivalents 12,693 14,114
Diluted net income per share $ 0.07 $ 0.01