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Provision for Income Taxes (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 27, 2014
Sep. 28, 2013
Sep. 27, 2014
Sep. 28, 2013
Income Tax Disclosure [Abstract]        
Provision for income taxes $ 3,246 $ 3,327 $ 9,468 $ 7,786
Effective income tax rate (in hundredths)     32.00% 31.00%