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Fair Value Measurements (Assets And Liabilities Measured At Fair Value On Recurring Basis) (Detail) (USD $)
9 Months Ended
Mar. 28, 2015
Sep. 03, 2014
Jun. 28, 2014
Fair Value Disclosures [Line Items]      
Foreign currency forward contracts, Financial Assets     $ 3,641,000us-gaap_AssetsFairValueDisclosureRecurring
Line of Credit Facility, Amount Outstanding 11,500,000us-gaap_LineOfCreditFacilityAmountOutstanding    
Long-term Debt 32,500,000us-gaap_LongTermDebt 35,000,000us-gaap_LongTermDebt  
Secured Debt, Repurchase Agreements     7,900,000us-gaap_SecuredDebtRepurchaseAgreements
Fixed Rate | Repurchase Agreements [Member]      
Fair Value Disclosures [Line Items]      
Variable rate on line of credit facility (percent) 2.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_DebtInstrumentAxis
= us-gaap_RepurchaseAgreementsMember
/ us-gaap_VariableRateAxis
= ktcc_FixedRateMember
   
Line of Credit | One-Month London Interbank Offered Rate      
Fair Value Disclosures [Line Items]      
Variable rate on line of credit facility (percent) 1.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember
/ us-gaap_VariableRateAxis
= ktcc_OneMonthLondonInterbankOfferedRateMember
   
Line of Credit | Federal Funds Rate      
Fair Value Disclosures [Line Items]      
Variable rate on line of credit facility (percent) 1.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember
/ us-gaap_VariableRateAxis
= ktcc_FederalFundsRateMember
   
Forward Contracts      
Fair Value Disclosures [Line Items]      
Foreign currency forward contracts, Financial Liabilities (6,215,000)us-gaap_LiabilitiesFairValueDisclosureRecurring
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember
   
Interest Rate Swap      
Fair Value Disclosures [Line Items]      
Foreign currency forward contracts, Financial Assets 2,000us-gaap_AssetsFairValueDisclosureRecurring
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
   
Foreign currency forward contracts, Financial Liabilities (432,000)us-gaap_LiabilitiesFairValueDisclosureRecurring
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
   
Level 1      
Fair Value Disclosures [Line Items]      
Foreign currency forward contracts, Financial Assets     0us-gaap_AssetsFairValueDisclosureRecurring
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
Level 1 | Forward Contracts      
Fair Value Disclosures [Line Items]      
Foreign currency forward contracts, Financial Liabilities 0us-gaap_LiabilitiesFairValueDisclosureRecurring
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
   
Level 1 | Interest Rate Swap      
Fair Value Disclosures [Line Items]      
Foreign currency forward contracts, Financial Assets 0us-gaap_AssetsFairValueDisclosureRecurring
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
   
Foreign currency forward contracts, Financial Liabilities 0us-gaap_LiabilitiesFairValueDisclosureRecurring
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
   
Level 2      
Fair Value Disclosures [Line Items]      
Foreign currency forward contracts, Financial Assets     3,641,000us-gaap_AssetsFairValueDisclosureRecurring
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
Level 2 | Forward Contracts      
Fair Value Disclosures [Line Items]      
Foreign currency forward contracts, Financial Liabilities (6,215,000)us-gaap_LiabilitiesFairValueDisclosureRecurring
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
   
Level 2 | Interest Rate Swap      
Fair Value Disclosures [Line Items]      
Foreign currency forward contracts, Financial Assets 2,000us-gaap_AssetsFairValueDisclosureRecurring
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
   
Foreign currency forward contracts, Financial Liabilities (432,000)us-gaap_LiabilitiesFairValueDisclosureRecurring
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
   
Level 3      
Fair Value Disclosures [Line Items]      
Foreign currency forward contracts, Financial Assets     0us-gaap_AssetsFairValueDisclosureRecurring
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
Level 3 | Forward Contracts      
Fair Value Disclosures [Line Items]      
Foreign currency forward contracts, Financial Liabilities 0us-gaap_LiabilitiesFairValueDisclosureRecurring
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
   
Level 3 | Interest Rate Swap      
Fair Value Disclosures [Line Items]      
Foreign currency forward contracts, Financial Assets 0us-gaap_AssetsFairValueDisclosureRecurring
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
   
Foreign currency forward contracts, Financial Liabilities 0us-gaap_LiabilitiesFairValueDisclosureRecurring
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member