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Net Income per Share (Details) - USD ($)
$ in Thousands
 3 Months Ended
Apr. 02, 2016
Apr. 04, 2015
Net income available to common shareholders    
Net income, as reported $ 2,423 $ 2,779
Less: net income attributable to participating shares 18 4
Net income available to common shareholders $ 2,405 $ 2,775
Reconciliation of basic to diluted weighted average shares of common stock outstanding    
Basic weighted average shares outstanding 8,871,000 9,190,000
Common stock equivalents:    
Stock options and restricted stock and restricted stock units (in shares) 56,000 213,000
Diluted weighted average shares outstanding 8,927,000 9,403,000
Calculation of common stock equivalents for purposes of computing diluted weighted average shares outstanding    
Anti-dilutive securities excluded from EPS computation (in shares) 346,245 391,733