Trade Accounts Receivable Purchase Program (Detail) (USD $) In Millions, unless otherwise specified	9 Months Ended	12 Months Ended
Mar. 28, 2015	Jun. 28, 2014	Jun. 25, 2014
Receivables [Abstract]
Account Purchase Agreement Maximum Aggregate Amount			$ 50.0
Trade Accounts Receivable Sold To Third Party	5.0	9.0
Secured Debt, Repurchase Agreements		7.9us-gaap_SecuredDebtRepurchaseAgreements
Proceeds from Accounts Receivable Securitization	4.5
Accounts Receivable Factored To Banking Institutions	$ 0.5

This amount represents the maximum amount of receivables eligible to be sold under the Account Purchase Agreement.

No definition available.

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Balance Type:	debit
Period Type:	instant

- Definition

This amount represents the amount of accounts receivable sold to third party financial institutions in relation to the company's accounts receivable factoring program.

+ References

No definition available.

+ Details

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Namespace Prefix:	ktcc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Trade Accounts Receivable Sold To Third Party

+ References

No definition available.

+ Details

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

- Definition

Proceeds from securitizations of receivables treated as collateralized borrowings, which are classified as financing transactions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_ReceivablesAbstract
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Balance Type:	na
Period Type:	duration

- Definition

Carrying value, as of the balance sheet date, of securities sold under agreements to repurchase where the transferor maintains effective control over the assets, accounting for them as secured debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(m)(1)(i))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 10

-Section 55

-Paragraph 51

-URI http://asc.fasb.org/extlink&oid=7580763&loc=d3e101761-111710

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant