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Long-Term Debt (Detail) (USD $) | 6 Months Ended |  |
--- | --- | --- | ---
Dec. 27, 2014 | Sep. 03, 2014 | Oct. 15, 2010
Debt Disclosure [Line Items] |  |  |
Long-term Debt | $ 33,800,000 us-gaap_LongTermDebt | $ 35,000,000 us-gaap_LongTermDebt |
Line of Credit Facility, Amount Outstanding | 12,000,000 us-gaap_LineOfCreditFacilityAmountOutstanding |  |
Letters of Credit Outstanding, Amount | 300,000 us-gaap_LettersOfCreditOutstandingAmount |  |
Additional availability of line of credit | 17,700,000 us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity |  |
Debt Instrument, Periodic Payment, Principal | 1,250,000 us-gaap_DebtInstrumentPeriodicPaymentPrincipal |  |
Line of Credit | One-Month London Interbank Offered Rate |  |  |
Debt Disclosure [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 |  |  |
Debt Disclosure [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 |  |
Wells Fargo Bank |  |  |
Debt Disclosure [Line Items] |  |  |
Increase in revolving line of credit |  |  | $ 30,000,000.0 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_CreditFacilityAxis = ktcc_WellsFargoBankMember
Debt Instrument, Basis Spread on Variable Rate, 1.75% | Term Loan | Fixed Rate |  |  |
Debt Disclosure [Line Items] |  |  |
Variable rate on line of credit facility (percent) | 1.75%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_LongtermDebtTypeAxis = us-gaap_LongTermDebtMember / us-gaap_StatementScenarioAxis = ktcc_DebtInstrumentBasisSpreadonVariableRateScenarioOneMember / us-gaap_VariableRateAxis = ktcc_FixedRateMember |  |
Debt Instrument, Basis Spread on Variable Rate, 1.75% | Line of Credit | Fixed Rate |  |  |
Debt Disclosure [Line Items] |  |  |
Variable rate on line of credit facility (percent) | 1.75%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_LongtermDebtTypeAxis = us-gaap_LineOfCreditMember / us-gaap_StatementScenarioAxis = ktcc_DebtInstrumentBasisSpreadonVariableRateScenarioOneMember / us-gaap_VariableRateAxis = ktcc_FixedRateMember |  |
Debt Instrument, Basis Spread on Variable Rate, 2.00% | Term Loan | Fixed Rate |  |  |
Debt Disclosure [Line Items] |  |  |
Variable rate on line of credit facility (percent) | 2.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_LongtermDebtTypeAxis = us-gaap_LongTermDebtMember / us-gaap_StatementScenarioAxis = ktcc_DebtInstrumentBasisSpreadonVariableRateScenarioTwoMember / us-gaap_VariableRateAxis = ktcc_FixedRateMember |  |
Debt Instrument, Basis Spread on Variable Rate, 2.00% | Line of Credit | Fixed Rate |  |  |
Debt Disclosure [Line Items] |  |  |
Variable rate on line of credit facility (percent) | 2.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_LongtermDebtTypeAxis = us-gaap_LineOfCreditMember / us-gaap_StatementScenarioAxis = ktcc_DebtInstrumentBasisSpreadonVariableRateScenarioTwoMember / us-gaap_VariableRateAxis = ktcc_FixedRateMember |  |
Debt Instrument, Basis Spread on Variable Rate, 2.25% | Term Loan | Fixed Rate |  |  |
Debt Disclosure [Line Items] |  |  |
Variable rate on line of credit facility (percent) | 2.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_LongtermDebtTypeAxis = us-gaap_LongTermDebtMember / us-gaap_StatementScenarioAxis = ktcc_DebtInstrumentBasisSpreadonVariableRateScenarioThreeMember / us-gaap_VariableRateAxis = ktcc_FixedRateMember |  |
Debt Instrument, Basis Spread on Variable Rate, 2.25% | Line of Credit | Fixed Rate |  |  |
Debt Disclosure [Line Items] |  |  |
Variable rate on line of credit facility (percent) | 2.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_LongtermDebtTypeAxis = us-gaap_LineOfCreditMember / us-gaap_StatementScenarioAxis = ktcc_DebtInstrumentBasisSpreadonVariableRateScenarioThreeMember / us-gaap_VariableRateAxis = ktcc_FixedRateMember |  |
Minimum |  |  |
Debt Disclosure [Line Items] |  |  |
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate | 2.24%us-gaap_LongTermDebtPercentageBearingVariableInterestRate / us-gaap_RangeAxis = us-gaap_MinimumMember |  |
Maximum |  |  |
Debt Disclosure [Line Items] |  |  |
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate | 3.25%us-gaap_LongTermDebtPercentageBearingVariableInterestRate / us-gaap_RangeAxis = us-gaap_MaximumMember |  |

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- Definition Amount borrowed under the credit facility as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 7 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 22 -Article 5 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a rate subject to change from time to time. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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