Statement of Financial Position [Abstract] Assets Assets [Abstract] Current assets: Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Restricted cash Restricted Cash and Cash Equivalents, Current Accounts receivable, net Accounts Receivable, Net, Current Inventoried costs Inventory, Net of Allowances, Customer Advances and Progress Billings Prepaid expenses Prepaid Expense, Current Other current assets Other Assets, Current Assets held for sale Assets Held-for-sale, Not Part of Disposal Group, Current Total current assets Assets, Current Property, plant and equipment, net Property, Plant and Equipment, Net Goodwill Goodwill Intangible assets, net Intangible Assets, Net (Excluding Goodwill) Other assets Other Assets, Noncurrent Total assets Assets Liabilities and Stockholders’ Equity Liabilities and Equity [Abstract] Current liabilities: Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Accrued expenses Accrued Liabilities, Current Accrued compensation Employee-related Liabilities, Current Accrued interest Interest Payable, Current Billings in excess of costs and earnings on uncompleted contracts Billings in Excess of Cost Other current liabilities Other Liabilities, Current Current liabilities of discontinued operations Disposal Group, Including Discontinued Operation, Liabilities, Current Total current liabilities Liabilities, Current Long-term debt, net of current portion Long-term Debt, Excluding Current Maturities Other long-term liabilities Other Liabilities, Noncurrent Non-current liabilities of discontinued operations Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent Total liabilities Liabilities Commitments and contingencies Commitments and Contingencies Stockholders’ equity: Stockholders' Equity Attributable to Parent [Abstract] Preferred stock, $0.001 par value, 5,000,000 shares authorized, 0 shares outstanding at September 25, 2016 and December 27, 2015 Preferred Stock, Value, Issued Common stock, $0.001 par value, 195,000,000 shares authorized; 60,516,717 and 59,139,651 shares issued and outstanding at September 25, 2016 and December 27, 2015, respectively Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital, Common Stock Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated deficit Retained Earnings (Accumulated Deficit) Total stockholders’ equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total liabilities and stockholders’ equity Liabilities and Equity Discontinued Operations and Disposal Groups [Abstract] Accrued compensation Disposal Group, Including Discontinued Operation, Employee-related Liabilities, Current Disposal Group, Including Discontinued Operation, Employee-related Liabilities, Current Other current liabilities Disposal Group, Including Discontinued Operation, Other Liabilities, Current Current liabilities of discontinued operations Goodwill and Intangible Assets Disclosure [Abstract] Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table] Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Customer relationships Customer Relationships [Member] Contracts and backlog Contracts and Backlog [Member] Contracts and Backlog [Member] Developed technology and technical know-how Developed Technology Rights [Member] Trade names Trade Names [Member] Favorable operating lease Favorable Operating Lease [Member] Favorable Operating Lease [Member] Indefinite-lived Intangible Assets by Major Class [Axis] Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets, Major Class Name [Domain] Indefinite-lived Intangible Assets, Major Class Name [Domain] Acquired Finite-Lived Intangible Assets [Line Items] Acquired Finite-Lived Intangible Assets [Line Items] Acquired finite-lived intangible assets: Finite-Lived Intangible Assets, Net [Abstract] Gross Value Finite-Lived Intangible Assets, Gross Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Net Value Finite-Lived Intangible Assets, Net Indefinite-lived trade names Indefinite-Lived Intangible Assets (Excluding Goodwill) Total intangible assets: Gross Value Intangible Assets (Excluding Goodwill), Gross Intangible Assets (Excluding Goodwill), Gross Total intangible assets: Net Value Aggregate amortization expense for finite-lived intangible assets Amortization of Intangible Assets Debt Disclosure [Abstract] Principal Debt Instrument, Face Amount Carrying Amount Long-term Debt Fair Value Long-term Debt, Fair Value Net unamortized original issue discount Debt Instrument, Unamortized Discount Debt issuance cost Debt Issuance Cost Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] 10-year term loan Loans Payable [Member] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] LIBOR rate London Interbank Offered Rate (LIBOR) [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Debt instrument, face amount Maturity period Debt Instrument, Maturity Period Debt Instrument, Maturity Period Number of subsidiaries acquired Number of Subsidiary Owned Number of Subsidiary Owned Quarterly installment payment - principal Debt Instrument, Periodic Payment, Principal Basis spread on variable rate (percent) Debt Instrument, Basis Spread on Variable Rate Organization, Consolidation and Presentation of Financial Statements [Abstract] Schedule of Condensed Financial Statements [Table] Condensed Financial Statements [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Parent Company Parent Company [Member] Subsidiary Guarantors on a Combined Basis Guarantor Subsidiaries [Member] Non-Guarantors on a Combined Basis Non-Guarantor Subsidiaries [Member] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Eliminations Consolidation, Eliminations [Member] Condensed Financial Statements, Captions [Line Items] Condensed Financial Statements, Captions [Line Items] Net cash provided by (used in) operating activities from continuing operations Net Cash Provided by (Used in) Operating Activities, Continuing Operations Investing activities: Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Investment in affiliated companies Payments For (Proceeds From) Investment In Affiliated Companies Payments For (Proceeds From) Investment In Affiliated Companies Change in restricted cash Increase (Decrease) in Restricted Cash Capital expenditures Payments for (Proceeds from) Productive Assets Proceeds from sale of assets Proceeds from Sale of Other Assets, Investing Activities Net cash used in investing activities from continuing operations Net Cash Provided by (Used in) Investing Activities, Continuing Operations Financing activities: Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Repayment of debt Repayments of Long-term Lines of Credit Extinguishment of long-term debt Repayments of Long-term Debt Proceeds from exercise of restricted stock units, employee stock options, and employee stock purchase plan Proceeds from (Repurchase of) Equity Cash paid for contingent acquisition consideration Payments for (Proceeds from) Previous Acquisition Financing from affiliated companies Proceeds from Contributions from Affiliates Other Proceeds from (Payments for) Other Financing Activities Net cash provided by (used in) financing activities from continuing operations Net Cash Provided by (Used in) Financing Activities, Continuing Operations Net cash flows of continuing operations Net Cash Provided by (Used in) Continuing Operations Net operating cash flows of discontinued operations Cash Provided by (Used in) Operating Activities, Discontinued Operations Net investing cash flows of discontinued operations Cash Provided by (Used in) Investing Activities, Discontinued Operations Effect of exchange rate changes on cash and cash equivalents Effect of Exchange Rate on Cash and Cash Equivalents, Continuing Operations Net increase (decrease) in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Income Statement [Abstract] Service revenues Sales Revenue, Services, Net Product sales Sales Revenue, Goods, Net Total revenues Revenue, Net Cost of service revenues Cost of Services Cost of product sales Cost of Goods Sold Total costs Cost of Revenue Gross profit Gross Profit Selling, general and administrative expenses Selling, General and Administrative Expense Research and development expenses Research and Development Expense Unused office space, restructuring expenses, and other Impairment Charges And Adjustments To Unused Office Space Liability Impairment Charges And Adjustments To Unused Office Space Liability Operating income (loss) from continuing operations Operating Income (Loss) Other income (expense): Other Nonoperating Income (Expense) [Abstract] Interest expense, net Interest Income (Expense), Nonoperating, Net Loss on extinguishment of debt Gains (Losses) on Extinguishment of Debt Other income (expense), net Other Nonoperating Income (Expense) Total other expense, net Nonoperating Income (Expense) Loss from continuing operations before income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Provision (benefit) for income taxes from continuing operations Income Tax Expense (Benefit) Income (loss) from continuing operations Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest Discontinued operations Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract] Income (loss) from operations of discontinued component (including gain on disposal of $80.3 million for the three and nine months ended September 27, 2015) Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax Income tax expense Discontinued Operation, Tax Effect of Discontinued Operation Income (loss) from discontinued operations Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Net income (loss) Net Income (Loss) Attributable to Parent Basic income (loss) per common share: Earnings Per Share, Basic [Abstract] Income (loss) from continuing operations (in dollars per share) Income (Loss) from Continuing Operations, Per Basic Share Income from discontinued operations (in dollars per share) Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share Net income (loss) per common share (in dollars per share) Earnings Per Share, Basic Diluted income (loss) per common share: Earnings Per Share, Diluted [Abstract] Income (loss) from continuing operations (in dollars per share) Income (Loss) from Continuing Operations, Per Diluted Share Income from discontinued operations (in dollars per share) Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share Net income (loss) per common share (in dollars per share) Earnings Per Share, Diluted Weighted average common shares outstanding: Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract] Weighted average common shares outstanding - Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Weighted average common shares outstanding - Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Comprehensive Income (Loss) Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract] Change in cumulative translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Attributable to Parent Senior notes Senior Notes [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] 7% Senior Notes due 2019 Seven Percent Senior Notes Due 2019 [Member] Seven Percent Senior Notes Due 2019 [Member] 10% Senior Notes due in 2017 Ten Percent Senior Notes Due June 2017 [Member] Senior Notes Due June 2017 [Member] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Revolving credit facility Revolving Credit Facility [Member] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Between 5/15/2016 and 5/15/2017 Redemption Period Two [Member] June First Twenty Fourteen Through June First Twenty Fifteen [Member] Between 5/15/2017 and 5/15/2018 Redemption Period Three [Member] June First Twenty Fifteen Through June First Twenty Sixteen [Member] After 5/15/2018 Redemption Period Four [Member] After June First Twenty Sixteen [Member] Stated interest rate (percent) Debt Instrument, Interest Rate, Stated Percentage Proceeds from the issuance of long-term debt Proceeds from Issuance of Long-term Debt Original issue discount Credit agreement borrowings Proceeds from Lines of Credit Reacquisition price Debt Instrument, Repurchase Amount Early termination fee Debt Instrument, Early Termination Fee Debt Instrument, Early Termination Fee Write off of unamortized issue costs Write off of Deferred Debt Issuance Cost Unamortized premium Debt Instrument, Unamortized Premium Interest accrued in escrow Debt Instrument, Escrow Interest Accrued Debt Instrument, Escrow Interest Loss on extinguishment of debt Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Fixed charge coverage ratio Debt Instrument Fixed Charge Coverage Ratio Line Of Credit Facility Fixed Coverage Ratio Redemption amount as percentage of aggregate principal amount (percent) Debt Instrument Redemption Amount As Percentage of Aggregate Principal Amount Percent of aggregate principal amount that may be redeemed by the Company if certain terms are met Period following asset disposition Debt Instrument, Duration Following Sale Required to Repurchase Loan With Unused Proceeds Debt Instrument, Duration Following Sale Required to Repurchase Loan With Unused Proceeds Outstanding borrowings Long-term Line of Credit Legal fees incurred Legal Fees Notes outstanding Senior Notes Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Disposal Group Name [Axis] Disposal Group Name [Axis] Disposal Groups, Including Discontinued Operations, Name [Domain] Disposal Group Name [Domain] Herley Herley Industries Inc [Member] Herley Industries Inc [Member] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Revenue Disposal Group, Including Discontinued Operation, Revenue Cost of sales Disposal Group, Including Discontinued Operation, Costs of Goods Sold Selling, general and administrative expenses Disposal Group, Including Discontinued Operation, General and Administrative Expense Interest expense, net Disposal Group, Including Discontinued Operation, Interest Expense Net Disposal Group, Including Discontinued Operation, Interest Expense Net Other net expense items that are not major Disposal Group, Including Discontinued Operation, Other Income (Expense) Disposal Group, Including Discontinued Operation, Other Income (Expense) Loss from discontinued operations before income taxes Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, before Income Tax Gain on disposal of discontinued operations before income taxes Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax Income (loss) on discontinued operations before income taxes Income tax benefit Income Tax Disclosure [Abstract] Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract] Effective Income Tax Rate Reconciliation, Amount [Abstract] Federal statutory income tax rate (percent) Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Income tax benefit at federal statutory rate Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount State and foreign taxes, net of federal tax benefit and valuation allowance Income Tax Reconciliation State Income Taxes And Foreign Income Tax Rate Differential Current State And Foreign Tax Expense Benefit Nondeductible expenses and other Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Amount Impact of deferred tax liabilities for indefinite-lived assets Effective Income Tax Rate Reconciliation, Other Adjustments, Amount Increase in reserves for uncertain tax positions Effective Income Tax Rate Reconciliation, Tax Contingency, Amount Increase in federal valuation allowance Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount Total income tax provision (benefit) Subsidiaries Subsidiaries [Member] Ownership percentage (percent) Noncontrolling Interest, Ownership Percentage by Parent Amounts due from affiliated companies Due from Affiliate, Current Other current assets Restricted Cash And Cash Equivalents At Carrying Value, Prepaid Expense And Other Assets, Current Restricted Cash And Cash Equivalents At Carrying Value, Prepaid Expense And Other Assets, Current Investment in subsidiaries Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures Accrued expenses Accrued Expenses, Current Accrued Expenses, Current Amounts due to affiliated companies Due to Affiliate, Current Long-term debt, net of current portion Long Term Debt And Unamortized Premium, Noncurrent Long Term Debt And Unamortized Premium, Noncurrent Total stockholders’ equity Segment Reporting [Abstract] Schedule of Segment Revenues, Depreciation and Amortization, and Operating Income (Loss) Schedule of Segment Reporting Information, by Segment [Table Text Block] Schedule of Components of Income Tax Expense (Benefit) Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Fair Value of Long-Term Debt Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block] Goodwill and Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Federal annual utilization of NOL carryforwards limit, next five years Operating Loss Carryforwards, Federal Annual Utilization Limit, Five Years Succeeding Initial Ownership Change Operating Loss Carryforwards, Federal Annual Utilization Limit, Five Years Succeeding Initial Ownership Change Threshold period for change in allowed annual amount of NOL to be recognized Threshold Period for Change in Allowed Annual Amount of Operating Loss Carryforward to be Recognized Threshold Period for Change in Allowed Annual Amount of Operating Loss Carryforward to be Recognized Federal annual utilization of NOL carryforwards limit, after year five Operating Loss Carryforwards, Federal Annual Utilization Limit, After Year Five Operating Loss Carryforwards, Federal Annual Utilization Limit, After Year Five Unrecognized tax benefits that if recognized would impact the effective tax rate for continuing operations Unrecognized Tax Benefits that Would Impact Effective Tax Rate Unrecognized tax benefits increase (decrease) Unrecognized Tax Benefits, Period Increase (Decrease) Expense for interest and penalties Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense Selling, general and administrative expenses Selling General, And Administrative Expense, Business Acquisition Related Costs, And Other Impairment Charges Selling General, And Administrative Expense And Business Acquisition Related Costs Interest income (expense), net Other income (expense), net Provision for income taxes from continuing operations Income (loss) from discontinued operations Equity in net income (loss) of subsidiaries Equity In Net Income (Loss) Of Subsidiaries Equity In Net Income (Loss) Of Subsidiaries Comprehensive income (loss) Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Counterparty Name [Axis] Counterparty Name [Axis] Counterparty Name [Domain] Counterparty Name [Domain] Air Force Research Laboratory ('AFRL') Air Force Research Laboratory ('AFRL') [Member] Air Force Research Laboratory ('AFRL') [Member] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Public Safety & Security Public Safety and Security [Member] Public Safety and Security [Member] Kratos Government Solutions Kratos Government Solutions [Member] Kratos Government Solutions operating/reportable segment Litigation Status [Axis] Litigation Status [Axis] Litigation Status [Domain] Litigation Status [Domain] Settled Litigation Settled Litigation [Member] Inventory [Axis] Inventory [Axis] Inventory [Domain] Inventory [Domain] Inventories Inventories [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Litigation related charges Litigation Settlement, Expense Impairment charges relating to inventories Asset Impairment Charges Estimate of loss accrual Contractual Obligation, Accrual Provision Contractual Obligation, Accrual Provision Debt Debt Disclosure [Text Block] Inventory Disclosure [Abstract] Schedule of Inventoried Costs Schedule of Inventory, Current [Table Text Block] Earnings Per Share [Abstract] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Stock options and awards Stock Options and Stock Awards [Member] Stock Options and Stock Awards [Member] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive securities excluded from computation of EPS (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Schedule of Discontinued Operations, Income Statement and Balance Sheet Disposal Groups, Including Discontinued Operations [Table Text Block] Risks and Uncertainties [Abstract] Schedule of Revenue by Major Customers, by Reportiing Segments [Table] Schedule of Revenue by Major Customers, by Reporting Segments [Table] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Government contracts Government Contracts Concentration Risk [Member] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Revenue Sales Revenue, Net [Member] Major Customers [Axis] Customer [Axis] Name of Major Customer [Domain] Customer [Domain] U.S. Government U.S. Government [Member] U.S. Government, major customer [Member] Revenue, Major Customer [Line Items] Revenue, Major Customer [Line Items] Sales to the U.S. Government, amount Revenues Sales to the U.S. Government, percentage of total revenue (percent) Concentration Risk, Percentage Document And Entity Information -- None. No documentation exists for this element. -- Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Document Type Document Type Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Principles of Consolidation Consolidation, Policy [Policy Text Block] Fiscal Year Fiscal Period, Policy [Policy Text Block] Accounting Estimates Use of Estimates, Policy [Policy Text Block] Accounting Standards Updates New Accounting Pronouncements, Policy [Policy Text Block] Fair Value of Financial Instruments Fair Value of Financial Instruments, Policy [Policy Text Block] Net Loss Per Common Share Earnings Per Share, Policy [Policy Text Block] Schedule of Condensed Consolidating Balance Sheet Condensed Balance Sheet [Table Text Block] Schedule of Condensed Consolidating Statement of Operations and Comprehensive Income (Loss) Schedule Of Condensed Statement Of Operations And Comprehensive Income [Table Text Block] Schedule Of Condensed Statement Of Operations And Comprehensive Income [Table Text Block] Schedule of Condensed Consolidating Statement of Cash Flows Condensed Cash Flow Statement [Table Text Block] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Selling, General and Administrative Expenses Selling, General and Administrative Expenses [Member] Purchase price, in cash Disposal Group, Including Discontinued Operation, Consideration Taxes incurred as part of transaction (up to $5.0 Million) Disposal Group, Including Discontinued Operation, Consideration, Tax Amount Disposal Group, Including Discontinued Operation, Consideration, Tax Amount Escrow to satisfy any purchase price adjustments Disposal Group, Including Discontinued Operation, Escrow Disposal Group, Including Discontinued Operation, Escrow Working capital adjustments Disposal Group, Including Discontinued Operation, Working Capital Adjustment Disposal Group, Including Discontinued Operation, Working Capital Adjustment Period to assert claim for indemnification Business Combination, Contingent Consideration Arrangements, Period to Assert Claim Business Combination, Contingent Consideration Arrangements, Period to Assert Claim Maximum amount of future payment Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High Transaction-related costs Disposal Group, Including Discontinued Operation, Transaction Related Cost Disposal Group, Including Discontinued Operation, Transaction Related Cost Gain on sale Disposal Group, Deferred Gain on Disposal Net payment to company after adjustments Disposal Group, Including Discontinued Operation, Closing Payment after Adjustments Disposal Group, Including Discontinued Operation, Closing Payment after Adjustments Net payment from escrow Disposal Group, Including Discontinued Operation, Payment from Escrow Disposal Group, Including Discontinued Operation, Payment from Escrow Difference in estimated working capital and actual working capital and the net cash position at the close of the Transaction Disposal Group, Including Discontinued Operation, Difference in Actual and Estimated Working Capital Disposal Group, Including Discontinued Operation, Difference in Actual and Estimated Working Capital Depreciation and amortization Disposal Group, Including Discontinued Operation, Depreciation and Amortization Redemption Debt Instrument, Redemption, Amount Debt Instrument, Redemption, Amount Repayment of outstanding borrowings Repayments of Debt Discontinued Operations Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Statement of Cash Flows [Abstract] Operating activities: Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Income (loss) from discontinued operations Loss from continuing operations Adjustments to reconcile loss from continuing operations to net cash used in operating activities from continuing operations: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization Stock-based compensation Share-based Compensation Deferred income taxes Deferred Income Tax Expense (Benefit) Amortization of deferred financing costs Amortization of Deferred Charges Amortization of discount on Senior Secured Notes Amortization of Debt Discount (Premium) Loss on extinguishment of debt Loss On Extinguishment Of Debt, Operating Activities Loss On Extinguishment Of Debt, Operating Activities Non-cash income tax benefit Other Noncash Income Tax Expense Provision for doubtful accounts Provision for Doubtful Accounts Provision for non-cash restructuring charges Restructuring Charges Changes in assets and liabilities, net of acquisitions: Increase (Decrease) in Operating Capital [Abstract] Accounts receivable Increase (Decrease) in Accounts Receivable Inventoried costs Increase (Decrease) in Inventories Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Accounts payable Increase (Decrease) in Accounts Payable Accrued compensation Increase (Decrease) in Employee Related Liabilities Accrued expenses Increase (Decrease) in Other Accrued Liabilities Advance payments received on contracts Increase (Decrease) in Customer Advances Accrued interest Increase (Decrease) in Interest Payable, Net Billings in excess of costs and earnings on uncompleted contracts Increase (Decrease) in Billing in Excess of Cost of Earnings Income tax receivable and payable Increase (Decrease) in Income Taxes Payable, Net of Income Taxes Receivable Other liabilities Increase (Decrease) in Other Operating Liabilities Net cash used in operating activities from continuing operations Change in restricted cash Proceeds from exercise of restricted stock units, employee stock options, and employee stock purchase plan Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Preferred Stock: Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract] Par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Shares authorized (in shares) Preferred Stock, Shares Authorized Shares outstanding (in shares) Preferred Stock, Shares Outstanding Common Stock: Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract] Par value (in dollars per share) Common Stock, Par or Stated Value Per Share Shares authorized (in shares) Common Stock, Shares Authorized Shares issued (in shares) Common Stock, Shares, Issued Shares outstanding (in shares) Common Stock, Shares, Outstanding Raw materials Inventory, Raw Materials, Net of Reserves Work in process Inventory, Work in Process, Net of Reserves Finished goods Inventory, Finished Goods, Net of Reserves Supplies and other Other Inventory, Net of Reserves Subtotal inventoried costs Inventory, Net Less: Customer advances and progress payments Progress Payments Netted Against Inventory for Long-term Contracts or Programs Total inventoried costs Segment Information Segment Reporting Disclosure [Text Block] Equity [Abstract] Stockholders' Equity Stockholders' Equity Note Disclosure [Text Block] Summary of Changes in Stockholders' Equity Schedule of Stockholders Equity [Table Text Block] Components of Accumulated Other Comprehensive Loss Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Rollforward of Common Stock Outstanding Schedule of Common Stock Outstanding Roll Forward [Table Text Block] Inventoried Costs Inventory Disclosure [Text Block] Increase (Decrease) in Stockholders' Equity [Roll Forward] Shares outstanding at beginning of the period Stock issued for employee stock purchase plan, stock options and restricted stock units exercised (shares) Stock Issued During Period, Shares, Employee Stock Purchase Plan, Stock Options And Restricted Stock Units Stock Issued During Period, Shares, Employee Stock Purchase Plan, Stock Options And Other Shares outstanding at end of the period Summary of Significant Accounting Policies Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Condensed Consolidating Financial Statements Condensed Financial Statements [Text Block] Commitments and Contingencies Disclosure [Abstract] Number of subsidiaries with certain unallowable costs Number of Subsidiaries With Unallowable Costs from Defense Contract Audit Agency Number of Subsidiaries With Unallowable Costs from Defense Contract Audit Agency Loss Contingencies [Table] Loss Contingencies [Table] Loss Contingencies [Line Items] Loss Contingencies [Line Items] Settlement amount related to unallowable costs Litigation Settlement, Amount Increase (Decrease) in Stockholders' Equity [Roll Forward] Stockholders’ equity at beginning of period Stockholders' Equity Attributable to Parent Comprehensive loss: Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Net income (loss) Change in cumulative translation adjustment Stock-based compensation Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Issuance of common stock for employee stock purchase plan Stock Issued During Period, Value, Employee Stock Purchase Plan Restricted stock units traded for taxes Adjustments Related to Tax Withholding for Share-based Compensation Stockholders’ equity at end of period Reportable Segments Operating Segments [Member] Unallocated corporate expense, net Corporate, Non-Segment [Member] Unmanned Systems Kratos Unmanned Systems [Member] Kratos Unmanned Systems [Member] Revenues: Revenues [Abstract] Depreciation & amortization: Depreciation, Depletion and Amortization, Nonproduction [Abstract] Total depreciation and amortization Operating income (loss) from continuing operations: Operating Income (Loss) [Abstract] Total operating income (loss) from continuing operations Income Taxes Income Tax Disclosure [Text Block] Significant Customers Significant Customers Disclosure [Text Block] Significant Customers Disclosure [Text Block] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Cumulative translation adjustment Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Post-retirement benefit reserve adjustment net of tax expense Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Total accumulated other comprehensive loss Reclassifications from other comprehensive income Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Net Income (Loss) Per Common Share Earnings Per Share [Text Block] Line of Credit Facility [Table] Line of Credit Facility [Table] Revolving Loans Letter of Credit Letter of Credit [Member] Swingline Loan Swing Line Loan [Member] Swing Line Loan [Member] Revolving Loans plus outstanding Swingline Loans plus Letters of Credit Revolving Loan, Swingline Loan, and Line of Credit [Member] Revolving Loan, Swingline Loan, and Line of Credit [Member] Federal Funds Rate Federal Funds Effective Swap Rate [Member] Base Rate Base Rate [Member] Eurodollar Eurodollar [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] 2014 Credit Agreement, Third Amendment Two Thousand Fourteen Credit Agreement, Third Amendment [Member] Two Thousand Fourteen Credit Agreement, Third Amendment [Member] 2014 Credit Agreement, Fourth Amendment Two Thousand Fourteen Credit Agreement, Fourth Amendment [Member] Two Thousand Fourteen Credit Agreement, Fourth Amendment [Member] Fixed charge coverage ratio not measured Scenario One [Member] Scenario One [Member] Fixed charge coverage ratio of at least 1.05 Scenario Two [Member] Scenario Two [Member] Herley disposition proceeds reinvestment reserve, as defined in the amendment Scenario Five [Member] Scenario Five [Member] Fixed charge coverage ratio of at least 1.10 Scenario Three [Member] Scenario Three [Member] Fixed charge coverage ratio remains at 1.15 Scenario Four [Member] Scenario Four [Member] Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Potential maximum borrowing capacity, subject to Lender approval Line Of Credit Facility, Maximum Possible Borrowings Subject To Application And Bank Approval Line Of Credit Facility, Maximum Possible Borrowings Subject To Application And Bank Approval Base rate (the greater of prime rate or 0.5% over federal funds rate) (in percent) Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum Base rate (floor, 1.0% over one-month LIBOR) (in percent) Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum Minimum amount required for repurchase Line of Credit Facility, Covenant Compliance, Required Amount of Loan Repurchased Line of Credit Facility, Covenant Compliance, Required Amount of Loan Repurchased Covenant Terms, capacity of outstanding loans or credit Line of Credit Facility, Covenant Terms, Capacity of Outstanding Borrowing Line of Credit Facility, Covenant Terms, Capacity of Outstanding Borrowing Covenant Terms, percentage of reinvestment in excess of loans and credit (percent) Line of Credit Facility, Covenant Terms, Percentage of Reinvestment Reserve over Outstanding Borrowings in Excess of Capacity of Outstanding Borrowing Line of Credit Facility, Covenant Terms, Percentage of Reinvestment Reserve over Outstanding Borrowings in Excess of Capacity of Outstanding Borrowing Reserve amount based on collateral carrying value Line of Credit Facility, Collateral, Reserve Amount Line of Credit Facility, Collateral, Reserve Amount Period from sale allowed to reinvest in similar collateral assets Debt Instrument, Duration for Collateral Adjustment Debt Instrument, Duration for Collateral Adjustment Reserve on the maximum borrowings Debt Instrument, Collateral Amount Increase (Decrease) Debt Instrument, Collateral Amount Increase (Decrease) Letter of credit exposure outstanding Debt Instrument, Covenant Compliance, Credit Line Outstanding Excluded From Calculation of Minimum Fixed Charge Coverage Ratio, Amount Debt Instrument, Covenant Compliance, Credit Line Outstanding Excluded From Calculation of Minimum Fixed Charge Coverage Ratio, Amount Remaining borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Disposal Groups, Including Discontinued Operations [Table] Name of Property [Axis] Name of Property [Axis] Name of Property [Domain] Name of Property [Domain] Walterboro Facility Walterboro Facility [Member] Walterboro Facility [Member] Disposal Group Classification [Axis] Disposal Group Classification [Axis] Disposal Group Classification [Domain] Disposal Group Classification [Domain] Held-for-sale Discontinued Operations, Held-for-sale [Member] Estimated cost of disposal Fiscal year duration Fiscal Year Duration Fiscal Year Duration First quarter duration Fiscal Year To Date Duration Fiscal Year To Date Duration Cost-share contract, award value Government Contract, Cost-share Award Government Contract, Cost-share Award Government funding to be received Government Contract Receivable Investment obligation Contractual Obligation Costs expected to be capitalized Contractual Obligation, Costs Expected to be Capitalized Contractual Obligation, Costs Expected to be Capitalized Total expected costs to be incurred Contractual Obligation, Expected Costs Contractual Obligation, Expected Costs Schedule of Goodwill Schedule of Goodwill [Table Text Block] Schedule of Intangible Assets (Finite-Lived) Schedule of Finite-Lived Intangible Assets [Table Text Block] Schedule of Intangible Assets (Indefinite-Lived) Schedule of Indefinite-Lived Intangible Assets [Table Text Block] Schedule of Goodwill [Table] Schedule of Goodwill [Table] Goodwill [Line Items] Goodwill [Line Items] Gross value Goodwill, Gross Less accumulated impairment Goodwill, Impaired, Accumulated Impairment Loss Net Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block]