Name:	ktos_DebtInstrumentCovenantComplianceCreditLineOutstandingExcludedFromCalculationofMinimumFixedChargeCoverageRatioAmount
Namespace Prefix:	ktos_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Debt Instrument, Duration for Collateral Adjustment

No definition available.

Name:	ktos_DebtInstrumentDurationforCollateralAdjustment
Namespace Prefix:	ktos_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Line Of Credit Facility Fixed Coverage Ratio

No definition available.

Name:	ktos_DebtInstrumentFixedChargeCoverageRatio
Namespace Prefix:	ktos_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

Debt Instrument, Maturity Period

No definition available.

Name:	ktos_DebtInstrumentMaturityPeriod
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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Line Of Credit Facility, Maximum Possible Borrowings Subject To Application And Bank Approval

No definition available.

Name:	ktos_LineOfCreditFacilityMaximumPossibleBorrowingsSubjectToApplicationAndBankApproval
Namespace Prefix:	ktos_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Line of Credit Facility, Collateral, Reserve Amount

No definition available.

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

Line of Credit Facility, Covenant Compliance, Required Amount of Loan Repurchased

No definition available.

Name:	ktos_LineofCreditFacilityCovenantComplianceRequiredAmountofLoanRepurchased
Namespace Prefix:	ktos_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Line of Credit Facility, Covenant Terms, Capacity of Outstanding Borrowing

No definition available.

Name:	ktos_LineofCreditFacilityCovenantTermsCapacityofOutstandingBorrowing
Namespace Prefix:	ktos_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Line of Credit Facility, Covenant Terms, Percentage of Reinvestment Reserve over Outstanding Borrowings in Excess of Capacity of Outstanding Borrowing

No definition available.

Name:	ktos_LineofCreditFacilityCovenantTermsPercentageofReinvestmentReserveoverOutstandingBorrowingsinExcessofCapacityofOutstandingBorrowing
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Data Type:	num:percentItemType
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Period Type:	instant

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
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Data Type:	num:percentItemType
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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: 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

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

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

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.

No definition available.

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

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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

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Name:	us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=ktos_HerleyIndustriesIncMember
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Balance Type:
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Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
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Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
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Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	us-gaap_VariableRateAxis=us-gaap_FederalFundsEffectiveSwapRateMember
Namespace Prefix:
Data Type:	na
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Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
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Data Type:	na
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Data Type:	na
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Name:	us-gaap_VariableRateAxis=us-gaap_EurodollarMember
Namespace Prefix:
Data Type:	na
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Name:	us-gaap_CreditFacilityAxis=us-gaap_LetterOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	us-gaap_CreditFacilityAxis=ktos_SwingLineLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	us-gaap_StatementScenarioAxis=ktos_ScenarioTwoMember
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