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Derivative Financial Instruments (Detail) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 9 Months Ended
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Mar. 28, 2015 | Mar. 29, 2014 | Mar. 28, 2015 | Mar. 29, 2014
Derivative [Line Items] |  |  |  |
Outstanding foreign currency forward contracts | $ 70.2 invest_DerivativeNotionalAmount |  | $ 70.2 invest_DerivativeNotionalAmount |
Contract maturity date |  |  | Jun. 27, 2018 |
Foreign currency forward contracts entered | 5.8 ktcc_NotionalAmountOfForeignCurrencyForwardContracts | 5.0 ktcc_NotionalAmountOfForeignCurrencyForwardContracts | 23.1 ktcc_NotionalAmountOfForeignCurrencyForwardContracts | 15.2 ktcc_NotionalAmountOfForeignCurrencyForwardContracts
Foreign currency forward contracts settled | 5.0 ktcc_SettlementsOfForeignCurrencyExchangeForwardContracts | 5.7 ktcc_SettlementsOfForeignCurrencyExchangeForwardContracts | 15.3 ktcc_SettlementsOfForeignCurrencyExchangeForwardContracts | 17.6 ktcc_SettlementsOfForeignCurrencyExchangeForwardContracts
Derivative, Fixed Interest Rate | 1.97%us-gaap_DerivativeFixedInterestRate |  | 1.97%us-gaap_DerivativeFixedInterestRate |
Net amount of existing losses expected to be reclassified into earnings within the next 12 months | 1.4 us-gaap_ForeignCurrencyCashFlowHedgeGainLossToBeReclassifiedDuringNext12Months |  | 1.4 us-gaap_ForeignCurrencyCashFlowHedgeGainLossToBeReclassifiedDuringNext12Months |
Interest Rate Swap |  |  |  |
Derivative [Line Items] |  |  |  |
Outstanding foreign currency forward contracts | $ 25.0 invest_DerivativeNotionalAmount / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateSwapMember |  | $ 25.0 invest_DerivativeNotionalAmount / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateSwapMember |

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
Name: | invest_DerivativeNotionalAmount
Namespace Prefix: | invest_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

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- Definition Notional Amount Of Foreign Currency Forward Contracts + References No definition available. + Details
Name: | ktcc_NotionalAmountOfForeignCurrencyForwardContracts
Namespace Prefix: | ktcc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Settlements Of Foreign Currency Exchange Forward Contracts + References No definition available. + Details
Name: | ktcc_SettlementsOfForeignCurrencyExchangeForwardContracts
Namespace Prefix: | ktcc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Fixed interest rate related to the interest rate derivative. + References No definition available. + Details
Name: | us-gaap_DerivativeFixedInterestRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Details
Name: | us-gaap_DerivativeLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Date the derivative contract matures, in CCYY-MM-DD format. + References No definition available. + Details
Name: | us-gaap_DerivativeMaturityDates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

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- Definition The estimated net amount of unrealized gains or losses on foreign currency cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=7668309&loc=d3e80748-113994 + Details
Name: | us-gaap_ForeignCurrencyCashFlowHedgeGainLossToBeReclassifiedDuringNext12Months
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwapMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |