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Income Taxes (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 6 Months Ended
Apr. 04, 2015
Rate
Mar. 29, 2014
Rate
Apr. 04, 2015
Rate
Mar. 29, 2014
Rate
Income Tax Expense (Benefit), Continuing Operations [Abstract]        
Income tax expense (benefit) $ 3,203us-gaap_IncomeTaxExpenseBenefit $ (1,244)us-gaap_IncomeTaxExpenseBenefit $ 6,165us-gaap_IncomeTaxExpenseBenefit $ 919us-gaap_IncomeTaxExpenseBenefit
Gross Income Tax Reconciliation, Percent   14.40%plxs_GrossIncomeTaxReconciliationPercent   12.80%plxs_GrossIncomeTaxReconciliationPercent
Effective tax rates 12.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations (7.20%)us-gaap_EffectiveIncomeTaxRateContinuingOperations 11.70%us-gaap_EffectiveIncomeTaxRateContinuingOperations 2.50%us-gaap_EffectiveIncomeTaxRateContinuingOperations
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions       $ 3,700us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions