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Note 8 - Income Taxes (Details) - Reconciliation Between the Statutory Federal Income Tax Rate and Effective Income Tax Rate (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Jan. 03, 2015
Dec. 28, 2013
Dec. 29, 2012
Reconciliation Between the Statutory Federal Income Tax Rate and Effective Income Tax Rate [Abstract]      
Income (loss) before income taxes $ 16,024us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest $ (2,118)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest $ (48,429)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Statutory federal income tax rate 34.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 34.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 34.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Income tax expense (benefit) at statutory federal rate 5,448us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate (720)us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate (16,466)us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
State income taxes, net of federal tax benefit 310us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes 151us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes 124us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes
Permanent difference - Goodwill impairment     11,448us-gaap_IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses
Valuation allowance (5,415)us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance 386us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance 4,739us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
Effect of lower foreign taxes (372)us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential 497us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential 296us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential
Adjustment for unrecognized tax positions 397us-gaap_IncomeTaxReconciliationOtherAdjustments (70)us-gaap_IncomeTaxReconciliationOtherAdjustments (23)us-gaap_IncomeTaxReconciliationOtherAdjustments
Other items, net 1,294us-gaap_IncomeTaxReconciliationOtherReconcilingItems (250)us-gaap_IncomeTaxReconciliationOtherReconcilingItems 748us-gaap_IncomeTaxReconciliationOtherReconcilingItems
Income tax expense (benefit) $ 1,662us-gaap_IncomeTaxExpenseBenefit $ (6)us-gaap_IncomeTaxExpenseBenefit $ 866us-gaap_IncomeTaxExpenseBenefit
Effective tax rate 10.40%us-gaap_EffectiveIncomeTaxRateContinuingOperations 0.30%us-gaap_EffectiveIncomeTaxRateContinuingOperations (1.80%)us-gaap_EffectiveIncomeTaxRateContinuingOperations