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Income Taxes (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 28, 2013
Sep. 29, 2012
Sep. 28, 2013
Sep. 29, 2012
Income Taxes [Abstract]        
Provision for income taxes $ 3,327 $ 2,055 $ 7,786 $ 7,898
Effective income tax rate (in hundredths) 34.00% 21.00% 31.00% 27.00%