Quarterly report pursuant to Section 13 or 15(d)

Net Income Per Share (Computation of Basic and Diluted Earnings Per Share)(Details)

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Net Income Per Share (Computation of Basic and Diluted Earnings Per Share)(Details) (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 28, 2014
Sep. 29, 2013
Sep. 28, 2014
Sep. 29, 2013
NUMERATOR:        
Net income $ 3,106 $ 2,816 $ 9,184 $ 8,617
DENOMINATOR:        
Weighted-average common shares outstanding 16,436,585 16,344,454 16,423,301 16,241,661
Basic net income per common share $ 0.19 $ 0.17 $ 0.56 $ 0.53
NUMERATOR:        
Net income $ 3,106 $ 2,816 $ 9,184 $ 8,617
DENOMINATOR:        
Weighted-average common shares outstanding 16,436,585 16,344,454 16,423,301 16,241,661
Dilutive effect of stock options and restricted stock units 270,280 368,164 288,493 416,924
Weighted-average of diluted shares 16,706,865 16,712,618 16,711,794 16,658,585
Diluted net income per common share $ 0.19 $ 0.17 $ 0.55 $ 0.52