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Net Income per Share (Details)
 3 Months Ended 6 Months Ended
Jun. 29, 2013
Jun. 30, 2012
Jun. 29, 2013
Jun. 30, 2012
Reconciliation of basic to diluted weighted average shares of common stock outstanding        
Basic weighted average shares outstanding 10,100,000 10,242,000 10,085,000 10,279,000
Common stock equivalents:        
Stock options and restricted shares (in shares) 88,000 139,000 89,000 160,000
Diluted weighted average shares outstanding 10,188,000 10,381,000 10,174,000 10,439,000
Calculation of common stock equivalents for purposes of computing diluted weighted average shares outstanding        
Anti-dilutive securities excluded from EPS computation (in shares) 1,065,240 1,190,676 1,103,932 1,214,086