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Note 4 Foreign Currency Forward Contract (Details) (Foreign Currency Forward, USD $)
In Thousands, unless otherwise specified
6 Months Ended
Mar. 28, 2015
Sep. 27, 2014
Derivatives Designated as Accounting Hedges:
   
Derivative [Line Items]    
Derivative Notional Amount $ 85,645invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeForwardMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember
$ 114,157invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeForwardMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember
Number of contracts 48us-gaap_NumberOfForeignCurrencyDerivativesHeld
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeForwardMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember
42us-gaap_NumberOfForeignCurrencyDerivativesHeld
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeForwardMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember
Maximum Length of Time Hedged 12 months  
Derivatives Not Designated as Accounting Hedges:
   
Derivative [Line Items]    
Derivative Notional Amount $ 209,365invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeForwardMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
$ 255,828invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeForwardMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Number of contracts 45us-gaap_NumberOfForeignCurrencyDerivativesHeld
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeForwardMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
41us-gaap_NumberOfForeignCurrencyDerivativesHeld
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeForwardMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Maximum Remaining Maturity 2 months