Notional Amount Of Foreign Currency Forward Contracts

No definition available.

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

- 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

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5579245-113959

+ Details

Name:	us-gaap_DerivativeNotionalAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

- 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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121549185&loc=d3e80748-113994

+ Details

Name:	us-gaap_ForeignCurrencyCashFlowHedgeGainLossToBeReclassifiedDuringNext12Months
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_DebtInstrumentAxis=ktcc_EquipmentTermLoanDomain
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Derivative Financial Instruments (Detail) - USD ($)	3 Months Ended		9 Months Ended
Derivative Financial Instruments (Detail) - USD ($)	Apr. 03, 2021	Mar. 28, 2020	Apr. 03, 2021	Mar. 28, 2020	Aug. 14, 2020
Derivative [Line Items]
Derivative, Notional Amount	$ 16,800,000		$ 16,800,000		$ 776,500
Foreign currency forward contracts entered		$ 23,800,000		$ 23,800,000
Foreign currency forward contracts settled	7,000,000.0	$ 6,600,000	19,900,000	$ 20,500,000
Net amount of existing losses expected to be reclassified into earnings within the next 12 months	$ 2,900,000		$ 2,900,000
Equipment Term Loan
Derivative [Line Items]
Derivative, Notional Amount					$ 148,400