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Provision for Income Taxes - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 03, 2015
Sep. 27, 2014
Oct. 03, 2015
Sep. 27, 2014
Income Tax Disclosure [Abstract]        
Provision for income taxes $ 3,782 $ 3,246 $ 10,964 $ 9,468
Effective income tax rate (as a percentage)     31.00% 32.00%