Restructuring and Related Activities [Abstract] Schedule of Restructuring and Related Costs [Table] Schedule of Restructuring and Related Costs [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Vencore Holding Corp. and KGS Holding Corp. Vencore Holding Corp. and KGS Holding Corp. [Member] Vencore Holding Corp. and KGS Holding Corp. [Member] Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Lease Abandonment Liability Restructuring and Related Activities Disclosure [Text Block] Retirement Benefits [Abstract] Schedule of Defined Benefit Plans Disclosures [Table] Schedule of Defined Benefit Plans Disclosures [Table] Retirement Plan Type [Axis] Retirement Plan Type [Axis] Retirement Plan Type [Domain] Retirement Plan Type [Domain] Pension Plan Pension Plan [Member] Medical Plan Postretirement Health Coverage [Member] Retirement Plan Tax Status [Axis] Retirement Plan Tax Status [Axis] Retirement Plan Tax Status [Domain] Retirement Plan Tax Status [Domain] Qualified Plan Qualified Plan [Member] Nonqualified Plan Nonqualified Plan [Member] Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] 2018 Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months 2019 Defined Benefit Plan, Expected Future Benefit Payment, Year Two 2020 Defined Benefit Plan, Expected Future Benefit Payment, Year Three 2021 Defined Benefit Plan, Expected Future Benefit Payment, Year Four 2022 Defined Benefit Plan, Expected Future Benefit Payment, Year Five Years 2023 ‑ 2027 Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter Goodwill and Intangible Assets Disclosure [Abstract] Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [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] Contracts/Customer relationships Customer Relationships [Member] Backlog Order or Production Backlog [Member] Technology Technology-Based Intangible Assets [Member] Favorable leasehold interest Above Market Leases [Member] PhaseOne trademark Trademarks [Member] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Gross Carrying Value Finite-Lived Intangible Assets, Gross Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Net Carrying Value Finite-Lived Intangible Assets, Net Restructuring Type [Axis] Restructuring Type [Axis] Type of Restructuring [Domain] Type of Restructuring [Domain] Lease Abandonment Contract Termination [Member] Lease Abandonment Liability [Roll Forward] Restructuring Reserve [Roll Forward] Beginning balance Restructuring Reserve Non‑cash activities Restructuring Reserve, Accrual Adjustment Lease payments in liability Payments for Restructuring Ending balance Schedule of Goodwill [Table] Schedule of Goodwill [Table] Goodwill [Line Items] Goodwill [Line Items] Changes in the Carrying Amount of Goodwill Schedule of Goodwill [Table Text Block] Accounting Policies [Abstract] Schedule Of Accounting Policies [Table] Schedule Of Accounting Policies [Table] Schedule Of Accounting Policies [Table] Schedule Of Accounting Policies [Line Items] Schedule Of Accounting Policies [Line Items] [Line Items] for Schedule Of Accounting Policies [Table] Principles of Combination and Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Revenue Recognition Revenue Recognition, Policy [Policy Text Block] Cash Cash and Cash Equivalents, Policy [Policy Text Block] Restricted Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Concentration of Risk Concentration Risk, Credit Risk, Policy [Policy Text Block] Receivables Receivables, Policy [Policy Text Block] Property and Equipment Property, Plant and Equipment, Policy [Policy Text Block] Leases Lessee, Leases [Policy Text Block] Intangible Assets Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block] Goodwill Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block] Impairment of Long-lived Assets Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] Self-Insurance Liability Self Insurance Reserve [Policy Text Block] Defined Benefit Plan and Other Postretirement Benefits Pension and Other Postretirement Plans, Policy [Policy Text Block] Fair Value Fair Value Measurement, Policy [Policy Text Block] Share-based Compensation Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block] Cost of Revenue Cost of Sales, Policy [Policy Text Block] General and administrative expenses Selling, General and Administrative Expenses, Policy [Policy Text Block] Deferred Costs Deferred Charges, Policy [Policy Text Block] Income Taxes Income Tax, Policy [Policy Text Block] Commitments and Contingencies Commitments and Contingencies, Policy [Policy Text Block] Comprehensive Income (loss) Comprehensive Income, Policy [Policy Text Block] Variable Interest Entities Consolidation, Variable Interest Entity, Policy [Policy Text Block] Recent Accounting Pronouncements and Standards Issued But Not Yet Effective New Accounting Pronouncements, Policy [Policy Text Block] Other Liabilities Disclosure [Abstract] Schedule Of Liability, Current And Noncurrent [Table] Schedule Of Liability, Current And Noncurrent [Table] Schedule Of Liability, Current And Noncurrent [Table] Schedule Of Liability, Current And Noncurrent [Line Items] Schedule Of Liability, Current And Noncurrent [Line Items] [Line Items] for Schedule Of Liability, Current And Noncurrent [Table] Schedule of Other Long-term Liabilities Other Noncurrent Liabilities [Table Text Block] Deferred Costs [Abstract] Total Employee Severance And Professional And Other Fees [Member] Employee Severance And Professional And Other Fees [Member] Severance and Related Costs Employee Severance [Member] Professional and Other Fees Professional And Other Fees [Member] Professional And Other Fees [Member] Restructuring Reserve [Roll Forward] Additions Restructuring Charges Cash payments Payables and Accruals [Abstract] Billings in excess of costs incurred Billings in Excess of Cost, Current Lease abandonment Restructuring Reserve, Current Self‑insurance liability Self Insurance Reserve, Current Tax indemnification liability Tax Indemnification Liability, Current Tax Indemnification Liability, Current Contract reserves Contract with Customer, Liability, Current Accrued interest Interest Payable, Current Deferred rent Deferred Rent Credit, Current Management advisory fees Accrued Professional Fees, Current Interest rate swap Derivative Liability, Current Taxes payable Taxes Payable, Current Other Other Liabilities, Miscellaneous, Current Other Liabilities, Miscellaneous, Current Other current liabilities Other Liabilities, Current Concentration Risk [Table] Concentration Risk [Table] Customer [Axis] Customer [Axis] Customer [Domain] Customer [Domain] NASA National Aeronautics And Space Administration [Member] National Aeronautics And Space Administration [Member] OPM Office Of Personnel Management [Member] Office Of Personnel Management [Member] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Customer Concentration Risk Customer Concentration Risk [Member] Government Contracts Government Contracts Concentration Risk [Member] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Sales Revenue, Net Sales Revenue, Net [Member] Trade Accounts Receivable Trade Accounts Receivable [Member] Concentration Risk [Line Items] Concentration Risk [Line Items] Net impact of adjustments in contract estimates on income from operations Revenue Recognition, Effect Of Adjustments To Estimated Contract Revenues Revenue Recognition, Effect Of Adjustments To Estimated Contract Revenues Percentage of average case rework provision Revenue Recognition, Percentage Of Case Rework Provision Revenue Recognition, Percentage Of Case Rework Provision Percentage of revenue recognized at Fieldwork Finished status Revenue Recognition, Percentage Of Revenue Recognized At Fieldwork Finished Status Revenue Recognition, Percentage Of Revenue Recognized At Fieldwork Finished Status Percentage of revenue billed at Fieldwork Finished status Revenue Recognition, Percentage Of Revenue Billed Revenue Recognition, Percentage Of Revenue Billed Percentage of unbilled revenue at Fieldwork Finished status Revenue Recognition, Percentage Revenue Unbilled Revenue Recognition, Percentage Revenue Unbilled Percentage of concentration risk Concentration Risk, Percentage Money market funds Money Market Funds, at Carrying Value Business Combinations [Abstract] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] KeyPoint KGS Holding Corp. [Member] KGS Holding Corp. [Member] Vencore Vencore Holding Corp [Member] Vencore Holding Corp [Member] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Ultra SpinCo Ultra SpinCo [Member] Ultra SpinCo [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Business combination, consideration transferred, percentage of total number of shares outstanding Business Combination, Consideration Transferred, Equity Interests Receivable, Percent Business Combination, Consideration Transferred, Equity Interests Receivable, Percent Payments for acquisitions, net of cash acquired Business Combination, Consideration Transferred, Equity Interests, Cash Receivable Business Combination, Consideration Transferred, Equity Interests, Cash Receivable Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] Schedule of Deferred Costs, Capitalized, Prepaid, And Other Assets [Table] Schedule of Deferred Costs, Capitalized, Prepaid, And Other Assets [Table] Schedule of Deferred Costs, Capitalized, Prepaid, And Other Assets [Table] Schedule of Deferred Costs, Capitalized, Prepaid, And Other Assets [Line Items] Schedule of Deferred Costs, Capitalized, Prepaid, And Other Assets [Line Items] [Line Items] for Schedule of Deferred Costs, Capitalized, Prepaid, And Other Assets [Table] Deferred compensation and non‑qualified savings plans Deferred Compensation Plan Assets Non‑qualified and qualified pension plans Assets for Plan Benefits, Defined Benefit Plan Tax indemnification asset Tax Indemnification Asset, Noncurrent Tax Indemnification Asset, Noncurrent Deferred indirect costs, net of current Deferred Indirect Costs, Noncurrent Deferred Indirect Costs, Noncurrent Deferred tax asset Deferred Income Taxes and Other Assets, Noncurrent Security deposits Security Deposit Investment in joint venture Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures Deferred revolver fees Debt Issuance Costs, Line of Credit Arrangements, Net Deferred rent subleases Deferred Rent Receivables, Net, Noncurrent Interest rate Swap Derivative Asset, Noncurrent Other Other Assets, Miscellaneous, Noncurrent Other long‑term assets Other Assets, Noncurrent Other than temporary losses Other than Temporary Impairment Losses, Investments Deferred Costs Deferred Indirect And Direct Costs [Text Block] Deferred Indirect And Direct Costs [Text Block] Schedule of Payables and Accruals [Table] Schedule of Payables and Accruals [Table] Schedule of Payables and Accruals [Table] Schedule of Payables and Accruals [Line Items] Schedule of Payables and Accruals [Line Items] [Line Items] for Schedule of Payables and Accruals [Table] Vendor payables Accounts Payable, Current Accrued expenses Accrued Liabilities, Current Total accounts payable and accrued expenses Accounts Payable and Accrued Liabilities, Current Debt Disclosure [Abstract] 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] Senior Subordinated Notes Senior Subordinated Notes [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] 11.5% Senior Subordinated Notes 11.5% Senior Subordinated Notes [Member] 11.5% Senior Subordinated Notes [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Principal amount Debt Instrument, Face Amount Interest Rate Debt Instrument, Interest Rate, Stated Percentage Debt amendment fee as a percentage Debt Instrument, Amendment Fee Debt Instrument, Amendment Fee Deferred financing costs Payments of Financing Costs Amount of debt extinguished Extinguishment of Debt, Amount Unamortized debt issuance expense Unamortized Debt Issuance Expense Unamortized loan discount Debt Instrument, Unamortized Discount Payment of extinguishment cost Payment for Debt Extinguishment or Debt Prepayment Cost Non-compete agreements Noncompete Agreements [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Useful life Finite-Lived Intangible Asset, Useful Life Indefinite-lived intangible assets Indefinite-Lived Intangible Assets (Excluding Goodwill) Goodwill impairment loss Goodwill, Impairment Loss Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Class B and Class B-1 Class B and Class B-1 [Member] Class B and Class B-1 [Member] Class A Membership Class A Membership [Member] Class A Membership [Member] Class B Membership Class B Membership [Member] Class B Membership [Member] Award Type [Axis] Award Type [Axis] Award Type [Domain] Equity Award [Domain] Stock Compensation Plan Stock Compensation Plan [Member] Phantom Equity Awards Phantom Share Units (PSUs) [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Number of compensation plans Share-based Compensation Arrangement By Share-based Payment Award, Number Of Compensation Plans Share-based Compensation Arrangement By Share-based Payment Award, Number Of Compensation Plans Percentage of aggregate Membership Interests authorized for issuance Share-based Compensation Arrangement by Share-based Payment Award, Percentage Of Shares Authorized Share-based Compensation Arrangement by Share-based Payment Award, Percentage Of Shares Authorized Award vesting rights, percentage Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Annual rate of return on investment for Class A membership interest Limited Liability Company or Limited Partnership, Members or Limited Partners, Dividend Rate Limited Liability Company or Limited Partnership, Members or Limited Partners, Dividend Rate Aggregate outstanding grants as a percentage of Membership Interest Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Percentage Of Outstanding Interests Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Percentage Of Outstanding Interests Percentage of membership interests that are nonvested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Percentage Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Percentage Vesting period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Stock based compensation Allocated Share-based Compensation Expense Share based compensation liability Deferred Compensation Share-based Arrangements, Liability, Current Fair value of share-based compensation Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Fair Value Statement of Comprehensive Income [Abstract] Statement [Table] Statement [Table] Statement [Line Items] Statement [Line Items] Net income Net Income (Loss) Attributable to Parent Other comprehensive loss, net of tax: Other Comprehensive Income (Loss), Net of Tax [Abstract] Post‑retirement benefits: Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax [Abstract] Actuarial loss on defined benefit pension plans, net of tax Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax Amounts reclassified from accumulated other comprehensive loss, net of tax Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax Available‑for‑sale securities: Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax [Abstract] Net changes related to available‑for‑sale securities, net of tax Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax Other comprehensive loss Other Comprehensive Income (Loss), Net of Tax Total comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Receivables [Abstract] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts Receivable Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Schedule of Variable Interest Entities [Table] Schedule of Variable Interest Entities [Table] Investment, Name [Axis] Investment, Name [Axis] Investment, Name [Domain] Investment, Name [Domain] HVH Precision Analytics LLC HVH Precision Analytics LLC [Member] HVH Precision Analytics LLC [Member] Havas Health, Inc. Havas Health, Inc. [Member] Havas Health, Inc. [Member] Variable Interest Entities [Axis] Variable Interest Entities [Axis] Variable Interest Entity, Classification [Domain] Variable Interest Entity, Classification [Domain] Not Primary Beneficiary Variable Interest Entity, Not Primary Beneficiary [Member] Variable Interest Entity [Line Items] Variable Interest Entity [Line Items] Number of countries in which entity operates Number of Countries in which Entity Operates Payments to acquire interest in joint venture Payments to Acquire Interest in Joint Venture Contribution of property Payments To Acquire Interest In Joint Venture, Non-Cash Assets Payments To Acquire Interest In Joint Venture, Non-Cash Assets Number of shares acquired Variable Interest Entity, Number Of Shares Acquired Variable Interest Entity, Number Of Shares Acquired Ownership percentage in VIE Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage Gain recognized in VIE Variable Interest Entity, Measure of Activity, Operating Income or Loss Equity method investments Equity Method Investments Accounts Payable and Accrued Expenses Accounts Payable and Accrued Liabilities Disclosure [Text Block] Taxes receivable Income Taxes Receivable, Current Prepaid insurance Prepaid Insurance Prepaid software Prepaid Software Prepaid Software Prepaid rent Prepaid Rent Prepaid advisory fee Prepaid Advisory Fee Prepaid Advisory Fee Tax indemnification asset Tax Indemnification Asset, Current Tax Indemnification Asset, Current Inventory Inventory, Net Other Other Assets, Current Prepaid and other current assets Prepaid Expense and Other Assets, Current Expected long-term rate of return Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets Benefit per participant per quarter Defined Benefit Plan, Reduction To Retirement Plan Benefits Per Participant Per Quarter Defined Benefit Plan, Reduction To Retirement Plan Benefits Per Participant Per Quarter Reduction to interest cost Defined Benefit Plan, Increase (Decrease) In Interest Cost Defined Benefit Plan, Increase (Decrease) In Interest Cost QNA SSG QNA SSG [Member] QNA SSG [Member] Contingent Consideration by Type [Axis] Contingent Consideration by Type [Axis] Contingent Consideration Type [Domain] Contingent Consideration Type [Domain] Financial Performance Financial Performance [Member] Financial Performance [Member] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Secured debt Secured Debt [Member] Revolving Credit Facility Revolving Credit Facility [Member] Letter of Credit Letter of Credit [Member] Delayed Draw Term Loan Delayed Draw Term Loan [Member] Delayed Draw Term Loan [Member] UBS First Lien UBS First Lien [Member] UBS First Lien [Member] UBS Second Lien UBS Second Lien [Member] UBS Second Lien [Member] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] Eurodollar Eurodollar [Member] Payments of dividends Payments of Dividends Total debt Long-term Debt, Gross Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Amount of letters of credit outstanding Letters of Credit Outstanding, Amount Commitment fee as percentage Line of Credit Facility, Commitment Fee Percentage Repayments of delayed draw Repayments Of Delayed Draw Debt Repayments Of Delayed Draw Debt Proceeds from issuance of long‑term debt Proceeds from Issuance of Secured Debt Payment of contingent consideration Payment For Contingent Consideration Liability, Operating And Financing Activities Payment For Contingent Consideration Liability, Operating And Financing Activities Interest rate floor Debt Instrument, Interest Rate Floor Debt Instrument, Interest Rate Floor Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Number of periodic payment Debt Instrument, Number Of Periodic Payment Debt Instrument, Number Of Periodic Payment Frequency of periodic payment Debt Instrument, Frequency of Periodic Payment Periodic payment amount Debt Instrument, Periodic Payment Percentage of net cash proceeds from issued indebtedness Debt Instrument, Mandatory Repayment, Percentage Of Net Cash Proceeds From Issued Indebtedness Debt Instrument, Mandatory Repayment, Percentage Of Net Cash Proceeds From Issued Indebtedness Excess cash flow payment due period Debt Instrument, Mandatory Prepayment, Excess Cash Flow Payment Due, Day Debt Instrument, Mandatory Prepayment, Excess Cash Flow Payment Due, Day Current portion of long-term debt Long-term Debt, Current Maturities Quarterly principal payments Debt Instrument, Periodic Payment, Principal Excess cash flow payable Debt Instrument, Excess Cash Flow Payable Debt Instrument, Excess Cash Flow Payable Debt extinguishment costs Gain (Loss) on Extinguishment of Debt Maximum leverage ratio as a percentage of credit facility commitments Debt Instrument, Covenant, Maximum Leverage Ratio, Percentage Of Credit Facility Commitments Debt Instrument, Covenant, Maximum Leverage Ratio, Percentage Of Credit Facility Commitments Required consolidated net leverage ratio Debt Instrument, Covenant, Leverage Ratio Debt Instrument, Covenant, Leverage Ratio Related Party Transactions [Abstract] Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] TCW, Crescent Mezzanine, LLC TCW, Crescent Mezzanine, LLC [Member] TCW, Crescent Mezzanine, LLC [Member] IP III Mezzanine Partners, L.P. and UT Mezz Partners, L.P IP III Mezzanine Partners, L.P. And UT Mezz Partners, L.P [Member] IP III Mezzanine Partners, L.P. And UT Mezz Partners, L.P [Member] Ownership [Axis] Ownership [Axis] Ownership [Domain] Ownership [Domain] The SI Organization Holdings LLC The SI Organization Holdings LLC [Member] The SI Organization Holdings LLC [Member] Counterparty Name [Axis] Counterparty Name [Axis] Counterparty Name [Domain] Counterparty Name [Domain] Chertoff Group Chertoff Group [Member] Chertoff Group [Member] JKH Consulting JKH Consulting [Member] JKH Consulting [Member] Related Party Transaction [Axis] Related Party Transaction [Axis] Related Party Transaction [Domain] Related Party Transaction [Domain] Management Fee Management Fee [Member] Management Fee [Member] Advisory Fees Advisory Fees [Member] Advisory Fees [Member] Board Of Managers Service Fee Board Of Managers Service Fee [Member] Board Of Managers Service Fee [Member] Contract Labor Services Contract Labor Services [Member] Contract Labor Services [Member] Related Party Transaction [Line Items] Related Party Transaction [Line Items] Amount of transaction with related party Related Party Transaction, Amounts of Transaction Amount of transaction with related party as a percentage of EBITDA Related Party Transaction, Amounts Of Transaction, Percentage Of Consolidated EBITDA Related Party Transaction, Amounts Of Transaction, Percentage Of Consolidated EBITDA Expenses from transactions with related party Related Party Transaction, Expenses from Transactions with Related Party Payment for management fee Payment for Management Fee Repayments of related party debt Repayments of Related Party Debt Term loan from related parties Notes Payable, Related Parties Payment for administrative fees Payment for Administrative Fees Number of related parties in a related party transaction Related Party Transaction, Number Of Related Parties Related Party Transaction, Number Of Related Parties Ownership interest Limited Liability Company or Limited Partnership, Members or Limited Partners, Ownership Interest Significant Accounting Policies Significant Accounting Policies [Text Block] Fair Value Disclosures [Abstract] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value Measurements Fair Value Disclosures [Text Block] Commitments and Contingencies Disclosure [Abstract] Schedule of Operating Leased Assets [Table] Schedule of Operating Leased Assets [Table] Operating Leased Assets [Line Items] Operating Leased Assets [Line Items] Lease Payments Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] 2018 Operating Leases, Future Minimum Payments, Remainder of Fiscal Year 2019 Operating Leases, Future Minimum Payments, Due in Two Years 2020 Operating Leases, Future Minimum Payments, Due in Three Years 2021 Operating Leases, Future Minimum Payments, Due in Four Years 2022 Operating Leases, Future Minimum Payments, Due in Five Years Thereafter Operating Leases, Future Minimum Payments, Due Thereafter Total minimum lease payments Operating Leases, Future Minimum Payments Due Sublease Income Operating Leases, Future Minimum Sublease Rentals, Fiscal Year Maturity [Abstract] Operating Leases, Future Minimum Sublease Rentals, Fiscal Year Maturity 2018 Operating Leases, Future Minimum Sublease Rentals, Remainder Of Fiscal Year Operating Leases, Future Minimum Sublease Rentals, Remainder of Fiscal Year 2019 Operating Leases, Future Minimum Sublease Rentals, Within Two Years Operating Leases, Future Minimum Sublease Rentals, Within Two Years 2020 Operating Leases, Future Minimum Sublease Rentals, Within Three Years Operating Leases, Future Minimum Sublease Rentals, Within Three Years 2021 Operating Leases, Future Minimum Sublease Rentals, Within Four Years Operating Leases, Future Minimum Sublease Rentals, Within Four Years 2022 Operating Leases, Future Minimum Sublease Rentals, Within Five Years Operating Leases, Future Minimum Sublease Rentals, Within Five Years Thereafter Operating Leases, Future Minimum Sublease Rentals, Thereafter Operating Leases, Future Minimum Sublease Rentals, Thereafter Total sublease income Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals Net Lease Payment Operating Leases, Future Minimum Payments Due, Net Of Sublease Income, Fiscal Year Maturity [Abstract] Operating Leases, Future Minimum Payments Due, Net Of Sublease Income, Fiscal Year Maturity 2018 Operating Leases, Future Minimum Payments Due, Net Of Sublease Income, Remainder Of Fiscal Year Operating Leases, Future Minimum Payments Due, Net Of Sublease Income, Remainder Of Fiscal Year 2019 Operating Leases, Future Minimum Payments Due, Net Of Sublease Income, Due In Two Years Operating Leases, Future Minimum Payments Due, Net Of Sublease Income, Due In Two Years 2020 Operating Leases, Future Minimum Payments Due, Net Of Sublease Income, Due In Three Years Operating Leases, Future Minimum Payments Due, Net Of Sublease Income, Due In Three Years 2021 Operating Leases, Future Minimum Payments Due, Net Of Sublease Income, Due In Four Years Operating Leases, Future Minimum Payments Due, Net Of Sublease Income, Due In Four Years 2022 Operating Leases, Future Minimum Payments Due, Net Of Sublease Income, Due In Five Years Operating Leases, Future Minimum Payments Due, Net Of Sublease Income, Due In Five Years Thereafter Operating Leases, Future Minimum Payments Due, Net Of Sublease Income, Due Thereafter Operating Leases, Future Minimum Payments Due, Net Of Sublease Income, Due Thereafter Total net lease payment Operating Leases, Future Minimum Payments Due, Net of Sublease Income Operating Leases, Future Minimum Payments Due, Net of Sublease Income Goodwill [Roll Forward] Goodwill [Roll Forward] Goodwill, beginning period Goodwill Goodwill acquired Goodwill, Acquired During Period Goodwill, ending period Goodwill Goodwill, Gross Accumulated impairment losses Goodwill, Impaired, Accumulated Impairment Loss Goodwill, ending period Financial assets and liabilities subject to fair value measurements Fair Value, by Balance Sheet Grouping [Table Text Block] Fair value level 3 reconciliation Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Document Information [Abstract] Document Information [Abstract] Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Entity Filer Category Entity Filer Category Document Type Document Type Document Period End Date Document Period End Date Amendment Flag Amendment Flag Organization, Consolidation and Presentation of Financial Statements [Abstract] Schedule Of Organization, Consolidation And Presentation Of Financial Statements [Table] Schedule Of Organization, Consolidation And Presentation Of Financial Statements [Table] Schedule Of Organization, Consolidation And Presentation Of Financial Statements [Table] Schedule Of Organization, Consolidation And Presentation Of Financial Statements [Line Items] Schedule Of Organization, Consolidation And Presentation Of Financial Statements [Line Items] [Line Items] for Schedule Of Organization, Consolidation And Presentation Of Financial Statements [Table] Organization and Business Overview Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Billing Status, Type [Axis] Billing Status, Type [Axis] Receivables Billing Status [Domain] Receivables Billing Status [Domain] Unbilled Revenues Unbilled Revenues [Member] Contract closeouts Contract Receivable Retainage Accounts receivable, gross Accounts Receivable, Gross, Current Prepaid and Other Current Assets Other Current Assets [Text Block] Other Current Liabilities Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block] Income Tax Disclosure [Abstract] Operating Loss Carryforwards [Table] Operating Loss Carryforwards [Table] Operating Loss Carryforwards [Line Items] Operating Loss Carryforwards [Line Items] Provisional reduction in net deferred tax assets Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Change in Tax Rate, Provisional Income Tax Expense (Benefit) Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Change in Tax Rate, Provisional Income Tax Expense (Benefit) Provisional deferred tax benefit resulting from the remeasurement of deferred tax liabilities Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Change In Tax Rate, Deferred Tax Liability, Provisional Income Tax (Expense) Benefit Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Change In Tax Rate, Deferred Tax Liability, Provisional Income Tax (Expense) Benefit Provisional deferred tax benefit resulting from release of valuation allowance Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Release Of Valuation Allowance, Deferred Tax Liability, Provisional Income Tax Benefit Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Release Of Valuation Allowance, Deferred Tax Liability, Provisional Income Tax Benefit Valuation allowance Deferred Tax Assets, Valuation Allowance Net deferred tax liabilities Deferred Tax Liabilities, Net Of Valuation Allowance Deferred Tax Liabilities, Net Of Valuation Allowance Federal net operating loss carryforwards Deferred Tax Assets, Operating Loss Carryforwards, Domestic State net operating loss carryforwards Deferred Tax Assets, Operating Loss Carryforwards, State and Local Number of income tax groups Number Of Income Tax Entities Number Of Income Tax Entities Accrual for tax exposures (excluding accrued interest) Income Tax Examination, Penalties Accrued Interest expense related to the tax exposures Income Tax Examination, Interest Expense Accrued interest related to unrecognized tax benefits Unrecognized Tax Benefits, Interest on Income Taxes Accrued Service cost Defined Benefit Plan, Service Cost Interest cost Defined Benefit Plan, Interest Cost Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Settlement and curtailment expense Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment Amortization of net loss/(gain) Defined Benefit Plan, Amortization of Gain (Loss) Amortization of prior service (credit) Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Amendments, settlements and curtailments expense Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due To Amendment, Settlement And Curtailment Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due To Amendment, Settlement And Curtailment Total net pension expense (benefit) Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Debt Instrument, Payment, Period [Axis] Debt Instrument, Payment, Period [Axis] Debt Instrument, Payment, Period [Axis] Debt Instrument, Payment, Period [Domain] Debt Instrument, Payment, Period [Domain] [Domain] for Debt Instrument, Payment, Period [Axis] Installments at 1.25% Debt Instrument, Payment, Period One [Member] Debt Instrument, Payment, Period One [Member] Installments at 2.5% Debt Instrument, Payment, Period Two [Member] Debt Instrument, Payment, Period Two [Member] Keypoint Government Solutions, Inc (Keypoint OpCo) Keypoint Government Solutions, Inc (Keypoint OpCo) [Member] Keypoint Government Solutions, Inc (Keypoint OpCo) [Member] Cortland First Lien Cortland First Lien [Member] Cortland First Lien [Member] Periodic payment as a percentage of principal Debt Instrument, Periodic Payment, Percentage Of Principal Debt Instrument, Periodic Payment, Percentage Of Principal Percentage of outstanding capital stock acquired Business Acquisition, Percentage of Voting Interests Acquired Consideration transferred Business Combination, Consideration Transferred Maximum contingent consideration agreed to pay Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High Fair value of contingent consideration Business Combination, Contingent Consideration, Liability Adjustment made to contingent consideration liability Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability Goodwill Goodwill Disclosure [Text Block] Related Party Transactions Related Party Transactions Disclosure [Text Block] UBS / B1 loans UBS B1 Loans [Member] UBS B1 Loans [Member] UBS B1 Loans Amended UBS B1 Loans Amended [Member] UBS B1 Loans Amended [Member] Federal Funds Federal Funds Effective Swap Rate [Member] One-Month LIBOR One-Month LIBOR [Member] One-Month LIBOR [Member] Additional interest rate per annum on top of the base rate Debt Instrument, Additional Interest Rate Per Annum Debt Instrument, Additional Interest Rate Per Annum Long-term debt outstanding Long-term Debt Repayments of debt Repayments of Debt Paid time off Accrued Vacation, Current Accrued payroll and payroll taxes Accrued Salaries And Payroll Taxes, Current Accrued Salaries And Payroll Taxes, Current Incentive bonus plan Accrued Bonuses, Current Other Other Employee-related Liabilities, Current Total accrued compensation and benefits Employee-related Liabilities, Current Vacation time period Vacation Time, Period Vacation Time, Period Defined Benefit Plan, Asset Categories [Axis] Defined Benefit Plan, Asset Categories [Axis] Plan Asset Categories [Domain] Plan Asset Categories [Domain] Cash and cash equivalents Cash and Cash Equivalents [Member] Equity securities Equity Securities [Member] Fixed income Fixed Income Funds [Member] Real estate Real Estate [Member] Other Defined Benefit Plan, Other Plan Assets [Member] Defined Benefit Plan, Other Plan Assets [Member] Target Allocation 2018 Defined Benefit Plan, Plan Assets, Target Allocation, Percentage Actual Allocation 2017 Defined Benefit Plan, Actual Plan Asset Allocations Schedule of Lease Abandonment Liability Schedule of Restructuring Reserve by Type of Cost [Table Text Block] Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Leasehold improvements Leasehold Improvements [Member] Computer equipment Computer Equipment [Member] Software Software Development [Member] Furniture and fixtures Furniture and Fixtures [Member] Machinery and equipment Machinery and Equipment [Member] Land Land [Member] Other equipment Other Machinery and Equipment [Member] Construction in progress Construction in Progress [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Total Property, Plant and Equipment, Gross Less accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Property, equipment, and capitalized software Property, Plant and Equipment, Net Depreciation expense Depreciation, Depletion and Amortization, Nonproduction Schedule of Capital Leased Assets [Table] Schedule of Capital Leased Assets [Table] Capital Leased Assets [Line Items] Capital Leased Assets [Line Items] 2018 Capital Leases, Future Minimum Payments, Remainder of Fiscal Year 2019 Capital Leases, Future Minimum Payments Due in Two Years 2020 Capital Leases, Future Minimum Payments Due in Three Years 2021 Capital Leases, Future Minimum Payments Due in Four Years Total payments Capital Leases, Future Minimum Payments Due Less amount representing interest Capital Leases, Future Minimum Payments, Interest Included in Payments Executory costs Capital Leases, Future Minimum Payments, Executory Costs Present value of future lease payments Capital Leases, Future Minimum Payments, Present Value of Net Minimum Payments Current portion Capital Lease Obligations, Current Net of current portion Capital Lease Obligations, Noncurrent Billed Revenues Billed Revenues [Member] Allowance for doubtful accounts Allowance for Doubtful Accounts Receivable, Current Accounts receivable - net Accounts Receivable, Net, Current Long-term Debt, Fiscal Year Maturity [Abstract] Long-term Debt, Fiscal Year Maturity [Abstract] 2018 Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year 2019 Long-term Debt, Maturities, Repayments of Principal in Year Two 2020 Long-term Debt, Maturities, Repayments of Principal in Year Three 2021 Long-term Debt, Maturities, Repayments of Principal in Year Four 2022 Long-term Debt, Maturities, Repayments of Principal in Year Five Thereafter Long-term Debt, Maturities, Repayments of Principal after Year Five Long-term Debt Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Table] Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Table] Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] Reconciliation of the Funded Status of Defined Benefit Plans and Other Postretirement Medical Plan Changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status of Plan [Table Text Block] Schedule of Amounts Recognized as a Component of Other Comprehensive (Loss) Income Schedule of Defined Benefit Plan Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block] Schedule of Net Periodic Benefit Cost Not yet Recognized Schedule of Net Periodic Benefit Cost Not yet Recognized [Table Text Block] Schedule of Net Pension Cost and Net Postretirement Benefit Cost Schedule of Net Benefit Costs [Table Text Block] Schedule of Actuarial Assumptions Used Schedule of Assumptions Used [Table Text Block] Schedule of Asset Allocations Schedule of Allocation of Plan Assets [Table Text Block] Schedule of Benefit Payments Expected to be Paid Schedule of Expected Benefit Payments [Table Text Block] Schedule of Fair Value of Plan Assets Schedule of Changes in Fair Value of Plan Assets [Table Text Block] Schedule of Level 3 Reconciliation Schedule of Effect of Significant Unobservable Inputs, Changes in Plan Assets [Table Text Block] Schedule of Unrecognized (Losses) Gains in Accumulated Other Comprehensive (Loss) Income Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block] Schedule Of Unrecognized Tax Benefits [Table] Schedule Of Unrecognized Tax Benefits [Table] Schedule Of Unrecognized Tax Benefits [Table] Schedule Of Unrecognized Tax Benefits [Line Items] Schedule Of Unrecognized Tax Benefits [Line Items] [Line Items] for Schedule Of Unrecognized Tax Benefits [Table] Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Balance at beginning of fiscal year Unrecognized Tax Benefits Gross increases - tax positions in prior period Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions Gross decreases - tax positions in prior period Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions Balance at end of fiscal year Schedule Of Income Taxes [Table] Schedule Of Income Taxes [Table] Schedule Of Income Taxes [Table] Schedule Of Income Taxes [Line Items] Schedule Of Income Taxes [Line Items] [Line Items] for Schedule Of Income Taxes [Table] Schedule of (Provision) Benefit for Income Taxes Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Schedule of Effective Income Tax Rate Reconciliation Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Schedule of Primary Components of Federal and State Deferred Income Tax Assets and Liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Schedule of Changes in Valuation Allowance Summary of Valuation Allowance [Table Text Block] Schedule of Unrecognized Tax Benefits Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Scenario, Forecast Scenario, Forecast [Member] Keypoint Postretirement Plans Interest accrued Payment for Pension Benefits Employer match (as a percent) Defined Contribution Plan, Employer Matching Contribution, Percent of Match Employer matching contribution per participation per year Defined Contribution Plan, Employer Matching Contribution, Per Participation Defined Contribution Plan, Employer Matching Contribution, Per Participation Service cost Investment liquidated Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Decrease For Sale Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Decrease For Sale Value of investment Defined Benefit Plan, Fair Value of Plan Assets Defined Contribution Plan [Table] Defined Contribution Plan [Table] Retirement Plan Name [Axis] Retirement Plan Name [Axis] Retirement Plan Name [Domain] Retirement Plan Name [Domain] 401(k) Plan 401(k) Plan [Member] 401(k) Plan [Member] Profit Sharing Feature Profit Sharing Feature [Member] Profit Sharing Feature [Member] Defined Contribution Plan Disclosure [Line Items] Defined Contribution Plan Disclosure [Line Items] Contribution expense Defined Contribution Plan, Cost Amount from forfeiture account used to fund plan contribution Defined Contribution Plan, Employer Contribution Amount From Forfeitures Defined Contribution Plan, Employer Contribution Amount From Forfeitures Income Statement [Abstract] Revenue Revenues Operating costs and expenses Operating Costs and Expenses [Abstract] Cost of revenue (excluding depreciation and amortization) Cost of Services, Excluding Depreciation, Depletion, and Amortization General and administrative expenses Selling, General and Administrative Expense Depreciation and amortization Depreciation, Depletion and Amortization Gain on contingent consideration Deferred contract costs Amortization of Deferred Charges Gain on pension plan Pension Cost (Reversal of Cost) Total operating costs and expenses Operating Expenses Income from operations Operating Income (Loss) Interest expense Interest Expense Other, net Other Nonoperating Gains (Losses) Investment gain Gain (Loss) on Investments Income before income taxes and equity in net losses of affiliate Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Income tax (expense) benefit Income Tax Expense (Benefit) Income before equity in net losses of affiliate Income (Loss) From Continuing Operations Before Equity Method Investments Income (Loss) from Continuing Operations before Equity Method Investments Equity in net losses of affiliate Income (Loss) from Equity Method Investments Net income Assets Held under Capital Leases Assets Held under Capital Leases [Member] Gross equipment Accumulated amortization Current capital lease liability Non-current capital lease liability Depreciation of capital lease assets Capital Leases, Income Statement, Amortization Expense Rent expense on operating leases Operating Leases, Rent Expense Sublease rental for operating leases Operating Leases, Rent Expense, Sublease Rentals Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Fair Value, Measurements, Recurring Fair Value, Measurements, Recurring [Member] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Level 1 Fair Value, Inputs, Level 1 [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Level 3 Fair Value, Inputs, Level 3 [Member] Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Fixed income mutual funds Investments, Fair Value Disclosure Interest rate swap Derivative Asset Total assets Assets, Fair Value Disclosure Deferred compensation and nonqualified savings plan liabilities Deferred Compensation Liability, Fair Value Disclosure Deferred Compensation Liability, Fair Value Disclosure Interest rate swap Derivative Liability Class B/B‑1 membership interests Nonfinancial Liabilities Fair Value Disclosure Total liabilities Financial and Nonfinancial Liabilities, Fair Value Disclosure Changes In Deferred Indirect Costs [Roll Forward] Changes In Deferred Indirect Costs [Roll Forward] Changes In Deferred Indirect Costs [Roll Forward] Beginning balance Deferred Indirect Costs Deferred Indirect Costs Add: Severance and related costs Deferred Indirect Costs, Severance And Related Costs Deferred Indirect Costs, Severance And Related Costs Add: Write‑off of a building Deferred Indirect Costs, Write Off Of Building Deferred Indirect Costs, Write Off Of Building Add: Professional and other fees Deferred Indirect Costs, Professional And Other Fees Deferred Indirect Costs, Professional And Other Fees Less: Costs released to contracts Deferred Indirect Costs, Released To Contracts Deferred Indirect Costs, Released To Contracts Ending balance Changes In Deferred Direct Costs [Roll Forward] Changes In Deferred Direct Costs [Roll Forward] Changes In Deferred Direct Costs [Roll Forward] Beginning balance Deferred Direct Costs Deferred Direct Costs Add: Production costs Deferred Direct Costs, Production Costs Deferred Direct Costs, Production Costs Less: Costs released to contracts Deferred Direct Costs, Released To Contracts Deferred Direct Costs, Released To Contracts Ending balance Change in benefit obligation Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] Benefit obligation at the beginning of the year Defined Benefit Plan, Benefit Obligation Service cost Interest cost Participants’ contributions Defined Benefit Plan, Benefit Obligation, Contributions by Plan Participant Benefits paid Defined Benefit Plan, Benefit Obligation, Benefits Paid Actuarial losses (gains) Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) Amendments, settlements and curtailments Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Amendments, Settlements and Curtailments Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Amendments, Settlements and Curtailments Projected benefit obligation at end of year Change in plan assets Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] Fair value of plan assets at beginning of year Actual return on plan assets Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss) Benefits paid Defined Benefit Plan, Plan Assets, Benefits Paid Employer contributions Defined Benefit Plan, Plan Assets, Contributions by Employer Plan participants’ contributions Defined Benefit Plan, Plan Assets, Contributions by Plan Participant Settlement accounting Defined Benefit Plan, Plan Assets, Payment for Settlement Fair value of plan assets at end of year Defined Benefit Plan, Fair Value of Plan Assets Before Adjustment Of Claims Payable Defined Benefit Plan, Fair Value of Plan Assets Before Adjustment Of Claims Payable Claims payable from VEBA Defined Benefit Plan, Claims Payable Defined Benefit Plan, Claims Payable Fair value of plan assets at end of year Unfunded (funded) status of the plans Defined Benefit Plan, Funded (Unfunded) Status of Plan Amounts recognized in the balance sheet Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract] Current postretirement benefit liabilities Liability, Defined Benefit Plan, Current Noncurrent postretirement benefit (liabilities) assets Liability (Asset), Other Postretirement Defined Benefit Plan, Noncurrent Liability (Asset), Other Postretirement Defined Benefit Plan, Noncurrent Noncurrent pension liabilities Liability, Defined Benefit Pension Plan, Noncurrent Accumulated other comprehensive income (pretax) related to: Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract] Net actuarial losses (gains) Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax Prior service (credit) cost Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, Prior Service Cost (Credit), before Tax Assets held in rabbi trust Assets Held-in-trust, Noncurrent Contributions made Expected required contributions in 2018 Schedule of Accounts Payable and Accrued Liabilities Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] Unobservable inputs Real Estate Funds Defined Benefit Plan, Real Estate [Member] Defined Benefit Plan, Real Estate [Member] Hedge Funds Hedge Funds [Member] Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward] Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward] Adjusted fair value of plan assets at beginning of year Defined Benefit Plan, Adjusted Fair Value of Plan Assets Defined Benefit Plan, Adjusted Fair Value of Plan Assets Actual Return on Plan Assets Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Increase (Decrease) for Actual Return (Loss) on Plan Assets Still Held Purchases, Sales and Settlements Net Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Increase (Decrease) for Purchases, Sales, and Settlements Realized but not recognized Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, after Tax [Abstract] Actuarial losses and (gains) Prior Service cost/(Credit) Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), after Tax Recognition of previously deferred amounts Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, after Tax [Abstract] Actuarial gains and (losses) Prior Service Credit Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, after Tax Schedule Of Deferred Income Tax Expense (Benefit) [Table] Schedule Of Deferred Income Tax Expense (Benefit) [Table] Schedule Of Deferred Income Tax Expense (Benefit) [Table] Schedule Of Deferred Income Tax Expense (Benefit) [Line Items] Schedule Of Deferred Income Tax Expense (Benefit) [Line Items] [Line Items] for Schedule Of Deferred Income Tax Expense (Benefit) [Table] Current Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Federal expense Current Federal Tax Expense (Benefit) State expense Current State and Local Tax Expense (Benefit) Total current Current Income Tax Expense (Benefit) Deferred Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] Federal expense Deferred Federal Income Tax Expense (Benefit) State expense Deferred State and Local Income Tax Expense (Benefit) Total deferred Deferred Income Tax Expense (Benefit), As Adjusted Deferred Income Tax Expense (Benefit), As Adjusted Total (provision) benefit for income taxes Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Other current liabilities Other Current Liabilities [Member] Other long-term liabilities Other Noncurrent Liabilities [Member] Lease payments in liability Accrual adjustments to lease abandonment liability Lease abandonment liability Vencore Inc. (Vencore OpCo) Vencore Inc. (Vencore OpCo) [Member] Vencore Inc. (Vencore OpCo) [Member] Valuation Allowance [Table] Valuation Allowance [Table] Valuation Allowance [Line Items] Valuation Allowance [Line Items] Valuation Allowance, Deferred Tax Asset [Roll Forward] Valuation Allowance, Deferred Tax Asset [Roll Forward] Valuation Allowance, Deferred Tax Asset [Roll Forward] Beginning balance Increases (decreases) Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount Ending balance Property, Plant and Equipment Property, Plant and Equipment [Table Text Block] New Accounting Pronouncements or Change in Accounting Principle [Table] New Accounting Pronouncements or Change in Accounting Principle [Table] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] ASU 2015-07 Accounting Standards Update 2015-07 [Member] ASU 2016-15 Accounting Standards Update 2016-15 [Member] AUS 2017-07 Accounting Standards Update 2017-07 [Member] Accounting Standards Update 2017-07 [Member] Accounting Standards Update 2016-18 [Member] Accounting Standards Update 2016-18 [Member] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] Investments net asset value Investments Net Asset Value Reclassified contingent consideration payment made out of investing Payment for Contingent Consideration Liability, Investing Activities Contingent consideration payment made for operating activities Payment for Contingent Consideration Liability, Operating Activities Contingent consideration made for financing activities Payment for Contingent Consideration Liability, Financing Activities Reclassification from cost of revenue to other, net Reclassification from cost of revenue to other, net cash, cash equivalents and restricted cash and restricted cash equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Defined benefit pension plans Retiree medical plan Actuarial assumptions used to determine the benefit obligations Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract] Discount rate Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate Actuarial assumptions used to determine the net expense Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] Discount rate Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate Expected long‑term rate of return on assets Software and Software Development Costs Software and Software Development Costs [Member] Estimated useful lives of assets Property, Plant and Equipment, Useful Life Deferred costs Deferred Costs [Member] Deferred Costs [Member] Other long-term assets Other Noncurrent Assets [Member] Deferred costs amortization period Deferred Indirect Costs, Amortization Period Deferred Indirect Costs, Amortization Period Deferred indirect costs Deferred direct costs Schedule of Outstanding Indebtedness Schedule of Long-term Debt Instruments [Table Text Block] Schedule of Expected Maturities of Long-term Debt Schedule of Maturities of Long-term Debt [Table Text Block] Deferred income tax liability Deferred Income Tax Liabilities, Net Deferred compensation and non‑qualified savings plans Deferred Compensation Liability, Classified, Noncurrent Tax indemnification liability Tax Indemnification Liability, Noncurrent Tax Indemnification Liability, Noncurrent Deferred rent Deferred Rent Credit, Noncurrent Lease abandonment liability Restructuring Reserve, Noncurrent Interest rate swap Derivative Liability, Noncurrent Other Other Liabilities, Miscellaneous, Noncurrent Other Liabilities, Miscellaneous, Noncurrent Other long‑term liabilities Other Liabilities, Noncurrent Schedule of Other Long-Term Assets Schedule of Other Assets, Noncurrent [Table Text Block] Fair Value Inputs, Liabilities, Quantitative Information [Table] Fair Value Inputs, Liabilities, Quantitative Information [Table] Measurement Basis [Axis] Measurement Basis [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Carrying value Reported Value Measurement [Member] Estimate fair value Estimate of Fair Value Measurement [Member] Fair Value Inputs, Liabilities, Quantitative Information [Line Items] Fair Value Inputs, Liabilities, Quantitative Information [Line Items] Fair value inputs, volatility factor Fair Value Assumptions, Weighted Average Volatility Rate Fair value inputs, risk-free interest rate Fair Value Assumptions, Risk Free Interest Rate Fair value inputs, discount on lack of marketability Fair Value Inputs, Discount for Lack of Marketability Long-term debt fair value disclosure Debt Instrument, Fair Value Disclosure Long-term Debt and Interest Rate Swap Debt Disclosure [Text Block] Discount Deferred financing Debt Issuance Costs, Net Current portion Long‑term debt, net of current portion Long-term Debt, Excluding Current Maturities Business Combination Business Combination Disclosure [Text Block] Proposed Merger Mergers, Acquisitions and Dispositions Disclosures [Text Block] Equity funds Equity Funds [Member] Real estate funds Corporate funds Defined Benefit Plan, Corporate Funds [Member] Defined Benefit Plan, Corporate Funds [Member] Hedge funds Total investments measured at fair value Defined Benefit Plan, Fair Value of Plan Assets, Excluding Net Asset Value Investments Defined Benefit Plan, Fair Value of Plan Assets, Excluding Net Asset Value Investments Total investments Investments measured at NAV Defined Benefit Plan, Alternative Investments, Fair Value Of Plan Assets Defined Benefit Plan, Alternative Investments, Fair Value Of Plan Assets Schedule of Accrued Liabilities Schedule of Accrued Liabilities [Table Text Block] Purchased Intangible Assets Intangible Assets Disclosure [Text Block] Income Tax Rate Reconciliation [Table] Income Tax Rate Reconciliation [Table] Income Tax Rate Reconciliation [Table] Income Tax Rate Reconciliation [Line Items] Income Tax Rate Reconciliation [Line Items] [Line Items] for Income Tax Rate Reconciliation [Table] U.S. statutory tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Equity based awards Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Compensation Cost, Percent Noncash income or gain Effective Income Tax Rate Reconciliation,Business Acquisition, Percent Effective Income Tax Rate Reconciliation,Business Acquisition, Percent Valuation allowance Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent Amortization of intangible assets Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amortization, Percent State tax expense Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Uncertain tax position interest Effective Income Tax Rate Change In Uncertain Tax Positions The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate that can be explained by the change in uncertain tax positions recorded during the period. 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The Veritas Capital Fund IV, L.P. [Member] The Veritas Capital Fund IV, L.P. [Member] PGSI Holdings LLC PGSI Holdings LLC [Member] PGSI Holdings LLC [Member] TSIO Holdings LLC TSIO Holdings LLC [Member] TSIO Holdings LLC [Member] The Veritas Capital Fund III, L.P. The Veritas Capital Fund III, L.P. [Member] The Veritas Capital Fund III, L.P. [Member] John Hancock Entities John Hancock Entities [Member] John Hancock Entities [Member] KGS Holding Corp. And Chertoff Group Investments, LLC KGS Holding Corp. And Chertoff Group Investments, LLC [Member] KGS Holding Corp. And Chertoff Group Investments, LLC [Member] Other Ownership Interests [Line Items] Other Ownership Interests [Line Items] Number of employees Entity Number of Employees Subsequent Events [Abstract] Subsequent Event [Table] Subsequent Event [Table] Subsequent Event [Line Items] Subsequent Event [Line Items] Subsequent Events Subsequent Events [Text Block] 2018 Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year 2019 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2020 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2021 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2022 Finite-Lived Intangible Assets, Amortization Expense, Year Five Thereafter Finite-Lived Intangible Assets, Amortization Expense, after Year Five Accrued Compensation and Benefits Schedule Of Deferred Tax Assets And Liabilities [Table] Schedule Of Deferred Tax Assets And Liabilities [Table] Schedule Of Deferred Tax Assets And Liabilities [Table] Schedule Of Deferred Tax Assets And Liabilities [Line Items] Schedule Of Deferred Tax Assets And Liabilities [Line Items] [Line Items] for Schedule Of Deferred Tax Assets And Liabilities [Table] Deferred tax assets related to: Components of Deferred Tax Assets [Abstract] Postretirement benefit plans Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Postretirement Benefits Property, equipment and capitalized software Deferred Tax Assets, Property, Plant and Equipment Amortization of intangible assets Deferred Tax Assets, Goodwill and Intangible Assets Accrued expenses Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities Other liabilities Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Other Net operating loss carryforwards Deferred Tax Assets, Operating Loss Carryforwards Deferred compensation Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost Acquisition transaction costs Deferred Tax Assets, Tax Deferred Expense, Acquisition Transaction Costs Deferred Tax Assets, Tax Deferred Expense, Acquisition Transaction Costs Deferred financing costs Deferred Tax Assets, Tax Deferred Expense, Debt Issuance Costs Deferred Tax Assets, Tax Deferred Expense, Debt Issuance Costs Other Deferred Tax Assets, Other Total Deferred Tax Assets, Gross Valuation allowance Deferred tax assets Deferred Tax Assets, Net of Valuation Allowance Deferred tax liabilities related to: Components of Deferred Tax Liabilities [Abstract] Goodwill and other intangible assets Deferred Tax Liabilities, Goodwill and Intangible Assets Other current assets Deferred Tax Liabilities, Other Assets Deferred Tax Liabilities, Other Assets Deferred financing costs Deferred Tax Liabilities, Deferred Expense, Debt Issuance Costs Accounts receivable Deferred Tax Liabilities, Accounts Receivable Deferred Tax Liabilities, Accounts Receivable Deferred direct costs Deferred Tax Liabilities, Deferred Expense, Deferred Direct Costs Deferred Tax Liabilities, Deferred Expense, Deferred Direct Costs Deferred tax liabilities Deferred Tax Liabilities, Gross Net deferred tax assets and liabilities Deferred Tax Liabilities, Net Postretirement Plans Pension and Other Postretirement Benefits Disclosure [Text Block] Statement of Financial Position [Abstract] Assets: Assets [Abstract] Current assets: Assets, Current [Abstract] Cash Cash Accounts receivable, net Restricted cash Restricted Cash, Current Prepaid and other current assets Deferred costs Deferred Costs, Current Total current assets Assets, Current Property, equipment, and capitalized software, net Purchased intangible assets, net Goodwill Other long‑term assets Total assets Assets Liabilities and stockholder’s equity Liabilities and Equity [Abstract] Current liabilities: Liabilities, Current [Abstract] Accounts payable and accrued expenses Accrued compensation and benefits Current portion of long‑term debt Other current liabilities Total current liabilities Liabilities, Current Long‑term debt, net of current portion Accrued pension and other post‑retirement liabilities, net of current portion Liability, Pension and Other Postretirement and Postemployment Benefits, Noncurrent Other long‑term liabilities Total liabilities Liabilities Commitments and Contingencies (Note 20) Commitments and Contingencies Stockholders' equity: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Common stock, $0.01 par value, 2,000 shares authorized, 2 shares issued and outstanding at December 31, 2016, 2017 and March 30, 2018 Common Stock, Value, Issued Additional paid‑in capital Additional Paid in Capital Accumulated deficit Retained Earnings (Accumulated Deficit) Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Total liabilities and stockholder’s equity Liabilities and Equity Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock, authorized (in shares) Common Stock, Shares Authorized Common stock, issued (in shares) Common Stock, Shares, Issued Common stock, outstanding (in shares) Schedule of Other Current Liabilities Other Current Liabilities [Table Text Block] Other Long-term Liabilities Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Noncurrent [Text Block] Property, Equipment and Capitalized Software Property, Plant and Equipment Disclosure [Text Block] Statement of Cash Flows [Abstract] Operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by (used for) operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Amortization of debt discount and debt issuance costs Amortization of Debt Issuance Costs and Discounts Amortization of deferred contract costs Gain on contingent consideration Loss on debt extinguishment Share‑based compensation expense (income) Share-based Compensation Deferred income taxes Deferred Income Tax Expense (Benefit) Remeasurement of lease abandonment Gain (Loss) on Termination of Lease (Gain) losses on dispositions of property and equipment Gain (Loss) on Disposition of Property Plant Equipment Gain on investment Loss from equity‑method investment Changes in operating assets and liabilities, net of the effect of acquisitions Increase (Decrease) in Operating Capital [Abstract] Accounts receivable, net Increase (Decrease) in Accounts Receivable Prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Deferred costs Increase (Decrease) in Deferred Charges Other long‑term assets Increase (Decrease) in Other Noncurrent Assets Accounts payable and accrued expenses Increase (Decrease) in Accounts Payable and Accrued Liabilities Accrued compensation and benefits Increase (Decrease) in Employee Related Liabilities Other current liabilities Increase (Decrease) in Other Current Liabilities Post‑retirement pension plans Increase (Decrease) in Obligation, Pension Benefits Other long term liabilities Increase (Decrease) in Other Noncurrent Liabilities Payment of contingent consideration, in excess of acquisition date fair value Other, net Increase (Decrease) in Other Operating Assets and Liabilities, Net Net cash provided by (used for) operating activities Net Cash Provided by (Used in) Operating Activities Investing activities Net Cash Provided by (Used in) Investing Activities [Abstract] Expenditures for property, equipment and capitalized software Payments to Acquire Property, Plant, and Equipment Proceeds from property and equipment disposal Proceeds from Sale of Property, Plant, and Equipment Investment in deferred compensation plans Payments to Acquire Available-for-sale Securities Investment in company owned life insurance Payment to Acquire Life Insurance Policy, Investing Activities Proceeds from sale of investment in company owned life insurance plan Proceeds from Life Insurance Policy Change in restricted cash Increase (Decrease) in Restricted Cash Investments in affiliate/JV Payments to Acquire Interest in Subsidiaries and Affiliates Net cash provided by (used for) investing activities Net Cash Provided by (Used in) Investing Activities Financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Liquidating dividend Repayments of delayed draw Payments of long‑term debt Repayments of Secured Debt Payment of debt issuance costs Payments of Debt Issuance Costs Debt extinguishment cost Payments on capital lease Repayments of Long-term Capital Lease Obligations Cash paid to revolving credit facility Repayments of Lines of Credit Payment of contingent consideration Net cash used for financing activities Net Cash Provided by (Used in) Financing Activities Net increase (decrease) in cash, included restricted Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash, including restricted, at beginning of period Cash, including restricted, at end of period Less restricted cash included in prepaid and other current assets at end of period Restricted Cash Cash at end of period Cash and Cash Equivalents, at Carrying Value Supplemental disclosure of cash flow information Supplemental Cash Flow Information [Abstract] Equipment acquired under capital leases Payments to Acquire Equipment on Lease Purchases of property & equipment in accounts payable & accrued expenses Capital Expenditures Incurred but Not yet Paid Cash paid for interest Interest Paid, Net Cash (paid for) received for taxes Income Taxes Paid, Net Allowance for Doubtful Accounts Receivable [Roll Forward] Allowance for Doubtful Accounts Receivable [Roll Forward] Allowance for doubtful accounts, beginning balance Charged to costs and expenses Provision for Doubtful Accounts Deductions Allowance for Doubtful Accounts Receivable, Write-offs Allowance for doubtful accounts, beginning balance Schedule of Accounts Receivable, Net Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Schedule of Changes in Allowance for Doubtful Accounts Allowance for Credit Losses on Financing Receivables [Table Text Block] Schedule of Other Current Assets Schedule of Other Current Assets [Table Text Block] Schedule of Future Minimum Lease Payments for Capital Leases Schedule of Future Minimum Lease Payments for Capital Leases [Table Text Block] Schedule of Future Minimum Operating Lease Payments Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] Share-based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Asset Class [Axis] Asset Class [Axis] Asset Class [Domain] Asset Class [Domain] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Liability balance, beginning period Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value Net changes in valuation Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases, (Sales), Issuances, (Settlements) Transfers in/or out of level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Transfers, Net Liability balance, period end Derivative [Table] Derivative [Table] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Interest rate swap Interest Rate Swap [Member] Other current assets Other Current Assets [Member] Derivative [Line Items] Derivative [Line Items] Notional amount of interest rate swap Derivative, Notional Amount Fixed interest rate on derivative Derivative, Fixed Interest Rate Term of derivative contract Derivative, Term of Contract Interest rate swap liability Interest rate swap asset Gain (loss) on derivatives Derivative, Gain (Loss) on Derivative, Net Income Taxes Income Tax Disclosure [Text Block]