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Note 15 - Employee Benefit Plans (Details) - Components of Pension Expense (Benefit) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Apr. 05, 2015
Mar. 30, 2014
Components of Pension Expense (Benefit) [Abstract]    
Service cost $ 4us-gaap_DefinedBenefitPlanServiceCost $ 6us-gaap_DefinedBenefitPlanServiceCost
Interest cost on projected benefit obligation 434us-gaap_DefinedBenefitPlanInterestCost 447us-gaap_DefinedBenefitPlanInterestCost
Net amortizations of actuarial loss 170us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses 142us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses
Expected return on plan assets (564)us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets (607)us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets
$ 44us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost $ (12)us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost