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Provision for Income Taxes - Narrative (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Apr. 04, 2015
Mar. 29, 2014
Income Tax Disclosure [Abstract]    
Provision for income taxes $ 3,268us-gaap_IncomeTaxExpenseBenefit $ 2,352us-gaap_IncomeTaxExpenseBenefit
Effective income tax rate (as a percentage) 32.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations 31.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations