Retirement Benefits [Abstract] Defined contribution plan, number of plans Defined Contribution Plan, Number of Plans Defined Contribution Plan, Number of Plans Portion of contributions charged to income Defined Contribution Plan, Cost Benefits plan vesting percentage Defined Contribution Plan, Employers Matching Contribution, Annual Vesting Percentage Contributions accrued by the company Postemployment Benefits Liability, Current Earnings Per Share [Abstract] Reconciliation of Basic and Diluted Weighted Average Shares Outstanding Schedule of Weighted Average Number of Shares [Table Text Block] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Statement of Cash Flows [Abstract] Operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Net income Net Income (Loss) Attributable to Parent Adjustments to reconcile net income to net cash (used in) provided by operating activities: Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization, Excluding Amortization of Financing Costs Depreciation, Depletion and Amortization, Excluding Amortization of Financing Costs Loss on disposal of property, plant, and equipment Gain (Loss) on Disposition of Property Plant Equipment Stock-based compensation Share-based Compensation Amortization of debt issuance costs Amortization of Debt Issuance Costs Changes in assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Receivables Increase (Decrease) in Receivables Other assets Increase (Decrease) in Other Operating Assets Accounts payable Increase (Decrease) in Accounts Payable Billings in excess of costs Increase (Decrease) in Billing in Excess of Cost of Earnings Deferred taxes Increase (Decrease) in Deferred Income Taxes Compensation and other employee benefits Increase (Decrease) in Employee Related Liabilities Other liabilities Increase (Decrease) in Other Operating Liabilities Net cash (used in) provided by operating activities Net Cash Provided by (Used in) Operating Activities Investing activities Net Cash Provided by (Used in) Investing Activities [Abstract] Purchases of capital assets Payments to Acquire Productive Assets Acquisition of business, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Repayments of long-term debt Repayments of Long-term Debt Proceeds from revolver Proceeds from Lines of Credit Repayments of revolver Repayments of Lines of Credit Proceeds from exercise of stock options Proceeds from Stock Options Exercised Payments of employee withholding taxes on share-based compensation Payments Related to Tax Withholding for Share-based Compensation Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Exchange rate effect on cash Effect of Exchange Rate on Cash and Cash Equivalents Net change in cash Cash and Cash Equivalents, Period Increase (Decrease) Cash-beginning of year Cash Cash-end of period Supplemental Disclosure of Cash Flow Information: Supplemental Cash Flow Information [Abstract] Interest paid Interest Paid, Net Income taxes paid Income Taxes Paid, Net Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Stock-Based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] New Accounting Pronouncements and Changes in Accounting Principles [Abstract] Total minimum lease payments Operating Leases, Future Minimum Payments Due Debt Disclosure [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Term facility Term Facility [Member] Term Facility [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] 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 Total Long-term Debt, Gross Business Combinations [Abstract] Sentel Acquisition Business Combination Disclosure [Text Block] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative [Table] Derivative [Table] Hedging Relationship [Axis] Hedging Relationship [Axis] Hedging Relationship [Domain] Hedging Relationship [Domain] Cash Flow Hedging Cash Flow Hedging [Member] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Interest Rate Swap Interest Rate Swap [Member] Foreign Exchange Forward Foreign Exchange Forward [Member] Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Designated as hedging instrument Designated as Hedging Instrument [Member] Derivative [Line Items] Derivative [Line Items] Derivative, notional amount Derivative, Notional Amount Realized gain from foreign currency derivative Gain (Loss) on Derivative Instruments, Net, Pretax Derivative, Fair Value Derivative, Fair Value, Net Statement of Financial Position [Abstract] Assets Assets [Abstract] Current assets Assets, Current [Abstract] Cash Receivables Receivables, Net, Current Costs incurred in excess of billings Costs in Excess of Billings, Current Other current assets Other Assets, 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 non-current assets Other Assets, Noncurrent Total non-current assets Assets, Noncurrent Total Assets Assets Liabilities and Shareholders' Equity Liabilities and Equity [Abstract] Current liabilities Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Billings in excess of costs Billings in Excess of Cost, Current Compensation and other employee benefits Employee-related Liabilities, Current Short-term debt Long-term Debt, Current Maturities Other accrued liabilities Accrued Liabilities, Current Total current liabilities Liabilities, Current Long-term debt, net Long-term Debt, Excluding Current Maturities Deferred tax liability Deferred Income Tax Liabilities, Net Other non-current liabilities Other Liabilities, Noncurrent Total non-current liabilities Liabilities, Noncurrent Total liabilities Liabilities Commitments and contingencies Commitments and Contingencies Shareholders' Equity Stockholders' Equity Attributable to Parent [Abstract] Preferred stock; $0.01 par value; 10,000,000 shares authorized; No shares issued and outstanding Preferred Stock, Value, Issued Common stock; $0.01 par value; 100,000,000 shares authorized; 11,222,424 and 11,120,528 shares issued and outstanding Common Stock, Value, Issued Additional paid in capital Additional Paid in Capital Retained earnings Retained Earnings (Accumulated Deficit) Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Total shareholders' equity Stockholders' Equity Attributable to Parent Total Liabilities and Shareholders' Equity Liabilities and Equity Senior secured credit facilities Senior Secured Credit Facilities [Member] Senior Secured Credit Facilities [Member] Revolver Revolving Credit Facility [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Line of Credit Line of Credit [Member] Letters of credit Letter of Credit [Member] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] London Interbank Offered Rate (LIBOR) London Interbank Offered Rate (LIBOR) [Member] Base Rate Base Rate [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Credit facility, maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Debt instrument, term Debt Instrument, Term Distribution to subsidiary of Exelis Payments of Distributions to Affiliates Debt financing fees Debt Issuance Costs, Net Amortization expense Term facility, amortization rate, year one Long-term Debt, Maturities, Amortization Rate of Repayments of Principal in Next Twelve Months Long-term Debt, Maturities, Amortization Rate of Repayments of Principal in Next Twelve Months Term facility, amortization rate, year two Long-term Debt, Maturities, Amortization Rate of Repayments of Principal in Year Two Long-term Debt, Maturities, Amortization Rate of Repayments of Principal in Year Two Term facility, amortization rate, year three Long-term Debt, Maturities, Amortization Rate of Repayments of Principal in Year Three Long-term Debt, Maturities, Amortization Rate of Repayments of Principal in Year Three Term facility, amortization rate, year four Long-term Debt, Maturities, Amortization Rate of Repayments of Principal in Year Four Long-term Debt, Maturities, Amortization Rate of Repayments of Principal in Year Four Term facility, amortization rate, year five Long-term Debt, Maturities, Amortization Rate of Repayments of Principal in Year Five Long-term Debt, Maturities, Amortization Rate of Repayments of Principal in Year Five Balance outstanding under term loan facility Line of Credit, Current Number of letters of credit outstanding Letters of Credit Outstanding, Number Outstanding Letters of Credit Outstanding, Number Outstanding Letters of credit outstanding Letters of Credit Outstanding, Amount Available borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Maximum allowed dividend distribution Line of Credit Facility, Covenant Terms, Maximum Allowed Dividend Distribution Line of Credit Facility, Covenant Terms, Maximum Allowed Dividend Distribution Covenant terms, ratio of total indebtedness to combined EBITDA Line of Credit Facility, Covenant Terms, Maximum Debt to EBITDA Ratio Line of Credit Facility, Covenant Terms, Maximum Debt to EBITDA Ratio Covenant terms, maximum debt to EBITDA ratio, twelve months following purchase Line of Credit Facility, Covenant Terms, Maximum Debt to EBITDA Ratio, Twelve Months Following Purchase Line of Credit Facility, Covenant Terms, Maximum Debt to EBITDA Ratio, Twelve Months Following Purchase Covenant terms, ratio of EBITDA to interest expense, net, Line of Credit Facility, Covenant Terms, Minimum EBITDA to Interest Expense, Net, Ratio Line of Credit Facility, Covenant Terms, Minimum EBITDA to Interest Expense, Net, Ratio Ratio of total indebtedness to combined EBITDA Debt Instrument, Covenant Compliance, Debt to EBITDA Ratio Debt Instrument, Covenant Compliance, Debt to EBITDA Ratio Ratio of combined EBITDA to combined interest expense Debt Instrument, Covenant Compliance, EBITDA to Interest Expense Ratio Debt Instrument, Covenant Compliance, EBITDA to Interest Expense Ratio Spread on variable rate Debt Instrument, Basis Spread on Variable Rate Interest rate Debt Instrument, Interest Rate, Effective Percentage Undrawn portion of revolving facility, commitment fee percentage Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Document and Entity Information [Abstract] Document and Entity Information Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Trading Symbol Trading Symbol 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 Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized (in shares) Common Stock, Shares Authorized Common stock, shares issued (in shares) Common Stock, Shares, Issued Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table] Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Sentel Corporation Sentel Corporation [Member] Sentel Corporation [Member] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] 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] Backlog Order or Production Backlog [Member] Re-competes Contract Re-competes [Member] Contract Re-competes [Member] Acquired Finite-Lived Intangible Assets [Line Items] Acquired Finite-Lived Intangible Assets [Line Items] Percentage of outstanding common stock acquired Business Acquisition, Percentage of Voting Interests Acquired Preliminary purchase price, net of cash acquired Consideration transferred Business Combination, Consideration Transferred Working capital adjustments Payment for Contingent Consideration Liability, Investing Activities Intangible assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles Amortization period Finite-Lived Intangible Asset, Useful Life Weighted average remaining useful life Acquired Finite-lived Intangible Assets, Weighted Average Useful Life Amortization expense Amortization of Intangible Assets Acquisition related costs Business Combination, Acquisition Related Costs Revenue of acquiree since acquisition date Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual Recognized revenue from acquired entity Revenues Recent Accounting Pronouncements New Accounting Pronouncements and Changes in Accounting Principles [Text Block] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Vesting [Axis] Vesting [Axis] Vesting [Domain] Vesting [Domain] Share-based Compensation Award, Tranche One Share-based Compensation Award, Tranche One [Member] Share-based Compensation Award, Tranche Two Share-based Compensation Award, Tranche Two [Member] Share-based Compensation Award, Tranche Three Share-based Compensation Award, Tranche Three [Member] Title of Individual [Axis] Title of Individual [Axis] Relationship to Entity [Domain] Relationship to Entity [Domain] Key Employees Key Employees [Member] Key Employees [Member] Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Restricted Stock Units (RSUs) Restricted Stock Units (RSUs) [Member] Total Shareholder Return Awards (TSR) Total Shareholder Return Awards [Member] Total Shareholder Return Awards [Member] Share-based Compensation Award, by Instrument Type [Axis] Share-based Compensation Award, by Instrument Type [Axis] Share-based Compensation Award, by Instrument Type [Axis] Share-based Compensation Award, by Instrument Type [Domain] Share-based Compensation Award, by Instrument Type [Domain] [Domain] for Share-based Compensation Award, by Instrument Type [Axis] Equity Based Awards Equity Based Awards [Member] Equity Based Awards [Member] Liability Based Awards Liability Based Awards [Member] Liability Based Awards [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Unrecognized compensation costs Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Unrecognized compensation costs, period for recognition Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition RSU's granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period RSUs granted, weighted average grant date fair value (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Vesting increments Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Vesting period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Aggregate award target value Share based Compensation Arrangement by Share based Payment Award, Performance Based Award, Granted Aggregate Target Value Share based Compensation Arrangement by Share based Payment Award, Performance Based Award, Granted Aggregate Target Value Percentage of shareholder return award target Share-based Compensation Arrangement by Share-based Payment Award, Performance-Based Award, Percentage Payment of Aggregate Target Value of Shares Issued Share-based Compensation Arrangement by Share-based Payment Award, Performance-Based Award, Percentage Payment of Aggregate Target Value of Shares Issued Balance Sheet Related Disclosures [Abstract] Schedule of Compensation and Other Employee Benefits Schedule of Compensation and Other Employee Benefits [Table Text Block] Schedule of Compensation and Other Employee Benefits [Table Text Block] Schedule of Other Accrued Liabilities Schedule of Accrued Liabilities [Table Text Block] Revenue from Contract with Customer [Abstract] Contract assets Contract with Customer, Asset, Net Contract liability Contract with Customer, Liability Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Products and Services [Axis] Products and Services [Axis] Products and Services [Domain] Products and Services [Domain] Facility and logistics services Facility and Logistics Services [Member] Facility and Logistics Services [Member] Information technology and network communications services Information Technology and Network Communications Services [Member] Information Technology and Network Communications Services [Member] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Total revenue Revenue from Contract with Customer, Excluding Assessed Tax Income Tax Disclosure [Abstract] Income Taxes Income Tax Disclosure [Text Block] Contract Relationship [Axis] Contract Relationship [Axis] Contract Relationship [Axis] Contract Relationship [Domain] Contract Relationship [Domain] [Domain] for Contract Relationship [Axis] Prime contractor Prime Contractor [Member] Prime Contractor [Member] Subcontractor Subcontractor [Member] Subcontractor [Member] 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] Anti-dilutive stock options Employee Stock Option [Member] Anti-dilutive restricted stock units Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Anti-dilutive stock options (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Non-Qualified Stock Options (NQO) Non-Qualified Stock Options [Member] Non-Qualified Stock Options [Member] NQOs, Shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Outstanding at beginning of period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period Forfeited or expired (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period Outstanding at end of period (in shares) NQOs, Weighted Average Exercise Price Per Share Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Outstanding at beginning of period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Granted (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Exercised (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Vested (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Weighted Average Exercise Price Forfeited or expired (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price Outstanding at end of period (in dollars per share) RSUs, Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Outstanding at beginning of period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Granted (in shares) Exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Exercised in Period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Exercised in Period Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Forfeited or expired (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Outstanding at end of period (in shares) RSUs, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Outstanding at beginning of period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Granted (in dollars per share) Exercised (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Exercised in Period, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Exercised in Period, Weighted Average Grant Date Fair Value Vested (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Forfeited or expired (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Outstanding at beginning of period (in dollars per share) Organization, Consolidation and Presentation of Financial Statements [Abstract] Accounting Policies [Table] Accounting Policies [Table] Accounting Policies [Table] Investment, Name [Axis] Investment, Name [Axis] Investment, Name [Domain] Investment, Name [Domain] High Desert Support Services (HDSS) High Desert Support Services (HDSS) [Member] High Desert Support Services (HDSS) [Member] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Total revenue Sales Revenue, Net [Member] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Credit risk Government Contracts Concentration Risk [Member] Customer [Axis] Customer [Axis] Customer [Domain] Customer [Domain] U.S. Army U.S. Army [Member] U.S. Army [Member] Accounting Policies [Line Items] Accounting Policies [Line Items] [Line Items] for Accounting Policies [Table] Number of reportable segments Number of Reportable Segments Ownership percentage Equity Method Investment, Ownership Percentage Revenue Contracts Revenue Concentration risk, percentage Concentration Risk, Percentage Equity Investment Equity Method Investments [Policy Text Block] Principles of Consolidation Consolidation, Policy [Policy Text Block] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Reclassifications Reclassification, Policy [Policy Text Block] Revenue Recognition Revenue Recognition, Policy [Policy Text Block] Derivative Instruments Derivatives, Policy [Policy Text Block] Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Schedule of Maturities of Long-term Debt Schedule of Maturities of Long-term Debt [Table Text Block] Schedule of Carrying Values and Fair Values of Term Facility Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block] Revenue, Initial Application Period Cumulative Effect Transition [Table] Revenue, Initial Application Period Cumulative Effect Transition [Table] Initial Application Period Cumulative Effect Transition [Axis] Initial Application Period Cumulative Effect Transition [Axis] Initial Application Period Cumulative Effect Transition [Domain] Initial Application Period Cumulative Effect Transition [Domain] Impact Difference between Revenue Guidance in Effect before and after Topic 606 [Member] Before Topic 606 Calculated under Revenue Guidance in Effect before Topic 606 [Member] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] Accounting Standards Update 2014-09 Accounting Standards Update 2014-09 [Member] Revenue, Initial Application Period Cumulative Effect Transition [Line Items] Revenue, Initial Application Period Cumulative Effect Transition [Line Items] Receivables (unbilled) Unbilled Receivables, Current Impact to contract liabilities Retained earnings, net of tax Effects of the Adoption of ASC 606 compared to Former ASC Topic 605 [Abstract] Effects of the Adoption of ASC 606 compared to Former ASC Topic 605 [Abstract] Effects of the Adoption of ASC 606 compared to Former ASC Topic 605 [Abstract] Cost of revenue Contract Revenue Cost Selling, general and administrative expenses Selling, General and Administrative Expense Operating income Operating Income (Loss) Receivables (unbilled) Unbilled Contracts Receivable Earnings Per Share Earnings Per Share [Text Block] Provision for income income taxes Income Tax Expense (Benefit) Effective income tax rate Effective Income Tax Rate Reconciliation, Percent Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Business Acquisition [Line Items] Business Acquisition [Line Items] Receivables Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables Deferred taxes Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets Property, plant and equipment Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Intangible assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill Other current assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other Accounts payable Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable Other current liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other Other non-current liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other Preliminary purchase price, net of cash acquired Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net Income Statement [Abstract] Selling, general and administrative expenses Operating income Interest (expense) income, net Interest Income (Expense), Nonoperating, Net Income from operations before income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Income tax expense Net income Earnings Per Share Basic (in dollars per share) Earnings Per Share, Basic Diluted (in dollars per share) Earnings Per Share, Diluted 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 Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, performance obligation, percentage Revenue, Remaining Performance Obligation, Percentage Revenue, Remaining Performance Obligation, Percentage Revenue,expected performance obligation, percentage Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Funded backlog Statement of Comprehensive Income [Abstract] Statement [Table] Statement [Table] Statement [Line Items] Statement [Line Items] Other comprehensive income, net of tax Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Changes in derivative instrument: Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax [Abstract] Net change in fair value of interest rate swap Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax Net gain reclassified to interest expense Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax Tax expense Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax, Portion Attributable to Parent Net change in derivative instruments Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax, Portion Attributable to Parent Foreign currency translation adjustments, net of tax Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent Other comprehensive income, net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Total comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Other accrued liabilities Other Accrued Liabilities [Member] Other Accrued Liabilities [Member] Other non-current liabilities Other Noncurrent Liabilities [Member] Foreign currency forward designated as cash flow hedge, liability Foreign Currency Cash Flow Hedge Liability at Fair Value Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Compensation costs for equity-based awards Compensation costs for liability-based awards Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] Compensation cost for awards Allocated Share-based Compensation Expense Future tax benefit Employee Service Share-based Compensation, Tax Benefit from Compensation Expense Other non-current assets Other Noncurrent Assets [Member] Interest rate swap designated as cash flow hedge, liability Interest Rate Derivative Liabilities, at Fair Value Interest rate swap designated as cash flow hedge, other non-current assets Interest Rate Derivative Assets, at Fair Value Schedule of Derivative Liabilities at Fair Value Schedule of Derivative Liabilities at Fair Value [Table Text Block] Schedule of Foreign Exchange Contracts, Statement of Financial Position Schedule of Foreign Exchange Contracts, Statement of Financial Position [Table Text Block] Schedule of Notional Amounts of Outstanding Derivative Positions Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Measurement Basis [Axis] Measurement Basis [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Portion at Fair Value Measurement [Member] Portion at Fair Value Measurement [Member] Carrying Amount Reported Value Measurement [Member] Fair Value Estimate of Fair Value Measurement [Member] Short-term debt Short-term Debt [Member] Long-term debt Long-term Debt [Member] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Level 2 Fair Value, Inputs, Level 2 [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Debt Debt Instrument, Fair Value Disclosure Debt financing fees Total debt with debt financing fees Long-term Debt Post Employment Benefit Plans Pension and Other Postretirement Benefits Disclosure [Text Block] Compensation and Other Employee Benefits Employee-related Liabilities, Current [Abstract] Accrued salaries and wages Accrued Salaries, Current Accrued bonus Accrued Bonuses, Current Accrued employee benefits Accrued Employee Benefits, Current Total Favorable adjustments Contract with Customer, Liability, Cumulative Catch-up Adjustment to Revenue, Favorable, Change in Measure of Progress And Modification Of Contract Contract with Customer, Liability, Cumulative Catch-up Adjustment to Revenue, Favorable, Change in Measure of Progress And Modification Of Contract Unfavorable adjustments Contract with Customer, Liability, Cumulative Catch-up Adjustment to Revenue, Unfavorable, Change in Measure of Progress And Modification Of Contract Contract with Customer, Liability, Cumulative Catch-up Adjustment to Revenue, Unfavorable, Change in Measure of Progress And Modification Of Contract Net favorable adjustments Contract with Customer, Liability, Cumulative Catch-up Adjustment to Revenue, Change in Measure of Progress And Modification Of Contract Contract with Customer, Liability, Cumulative Catch-up Adjustment to Revenue, Change in Measure of Progress And Modification Of Contract Net favorable adjustment to operating income Contract with Customer, Liability, Cumulative Catch-up Adjustment to Revenue, Gross, Change in Measure of Progress And Modification Of Contract Contract with Customer, Liability, Cumulative Catch-up Adjustment to Revenue, Gross, Change in Measure of Progress And Modification Of Contract Contract with Customer, Basis of Pricing [Axis] Contract with Customer, Basis of Pricing [Axis] Contract with Customer, Basis of Pricing [Domain] Contract with Customer, Basis of Pricing [Domain] Cost-plus and cost-reimbursable Time-and-materials Contract [Member] Firm-fixed-price Fixed-price Contract [Member] Army Army [Member] Army [Member] Air Force Air Force [Member] Air Force [Member] Navy Navy [Member] Navy [Member] Other Other Customers [Member] Other Customers [Member] Derivative, Notional Receivables [Abstract] Billed receivables Billed Contracts Receivable Unbilled receivables Other Other Receivables, Net, Current Total receivables Estimated unbilled contract receivables related to requests for equitable adjustments and contract line item realignments Unbilled Receivables, Not Billable, Amount Expected to be Collected after Next Twelve Months Receivables Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Other Accrued Liabilities Accrued Liabilities, Current [Abstract] Workers' compensation, auto and general liability reserve Accrued Insurance, Current Contract related reserves Accrued Insurance Financing, Current Accrued Insurance Financing, Current Other accrued liabilities Other Accrued Liabilities, Current Total Derivative Instruments Derivatives and Fair Value [Text Block] Description of Business and Summary of Significant Accounting Policies Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] Middle East Middle East [Member] United States UNITED STATES Europe Europe [Member] Schedule of Impact of Stock-Based Compensation in Consolidation and Combined Statements of Income Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block] Schedule of Non-Qualified Stock Options, Activity Share-based Compensation, Stock Options, Activity [Table Text Block] Schedule of Recognized Identified Assets Acquired and Liabilities Assumed Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Composition of Certain Financial Statement Captions Supplemental Balance Sheet Disclosures [Text Block] Contract with Customer, Asset and Liability Contract with Customer, Asset and Liability [Table Text Block] Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Schedule of Effect of New Accounting Principle Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block] Add: Dilutive impact of stock options (in shares) Incremental Common Shares Attributable to Dilutive Effect of Call Options and Warrants Add: Dilutive impact of restricted stock units (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Diluted weighted average common shares outstanding (in shares) Earnings per share Earnings Per Share, Basic and Diluted [Abstract] Loss Contingencies [Table] Loss Contingencies [Table] Litigation Case [Axis] Litigation Case [Axis] Litigation Case [Domain] Litigation Case [Domain] Contract compliance Contract Compliance [Member] Contract Compliance [Member] Loss Contingencies [Line Items] Loss Contingencies [Line Items] Contracts loss contingency accrual Loss Contingency Accrual Debt Debt Disclosure [Text Block] Schedule of Receivables Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Revenue Revenue from Contract with Customer [Text Block]