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Income Taxes (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Apr. 03, 2015
Mar. 28, 2014
Income Tax Disclosure [Abstract]    
Loss before income taxes $ (2,943)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments $ (7,133)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
Benefit from income taxes $ (286)us-gaap_IncomeTaxExpenseBenefit $ (1,723)us-gaap_IncomeTaxExpenseBenefit
Effective income tax rate 9.70%us-gaap_EffectiveIncomeTaxRateContinuingOperations 24.20%us-gaap_EffectiveIncomeTaxRateContinuingOperations