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Derivative Financial Instruments (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 28, 2015	Mar. 29, 2014	Mar. 28, 2015	Mar. 29, 2014
Derivative [Line Items]
Outstanding foreign currency forward contracts	$ 70.2invest_DerivativeNotionalAmount		$ 70.2invest_DerivativeNotionalAmount
Contract maturity date			Jun. 27, 2018
Foreign currency forward contracts entered	5.8ktcc_NotionalAmountOfForeignCurrencyForwardContracts	5.0ktcc_NotionalAmountOfForeignCurrencyForwardContracts	23.1ktcc_NotionalAmountOfForeignCurrencyForwardContracts	15.2ktcc_NotionalAmountOfForeignCurrencyForwardContracts
Foreign currency forward contracts settled	5.0ktcc_SettlementsOfForeignCurrencyExchangeForwardContracts	5.7ktcc_SettlementsOfForeignCurrencyExchangeForwardContracts	15.3ktcc_SettlementsOfForeignCurrencyExchangeForwardContracts	17.6ktcc_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	1.4us-gaap_ForeignCurrencyCashFlowHedgeGainLossToBeReclassifiedDuringNext12Months		1.4us-gaap_ForeignCurrencyCashFlowHedgeGainLossToBeReclassifiedDuringNext12Months
Interest Rate Swap
Derivative [Line Items]
Outstanding foreign currency forward contracts	$ 25.0invest_DerivativeNotionalAmount / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateSwapMember		$ 25.0invest_DerivativeNotionalAmount / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateSwapMember

X

- 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

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Period Type:	instant

X

- Definition

Notional Amount Of Foreign Currency Forward Contracts

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Settlements Of Foreign Currency Exchange Forward Contracts

+ References

No definition available.

+ Details

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Namespace Prefix:	ktcc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Fixed interest rate related to the interest rate derivative.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Date the derivative contract matures, in CCYY-MM-DD format.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

X

- 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

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X

- Details

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