Compensation and Retirement Disclosure [Abstract]
2018
Defined Benefit Plan, Expected Future Benefit Payments, Next Twelve Months
2019
Defined Benefit Plan, Expected Future Benefit Payments, Year Two
2020
Defined Benefit Plan, Expected Future Benefit Payments, Year Three
2021
Defined Benefit Plan, Expected Future Benefit Payments, Year Four
2022
Defined Benefit Plan, Expected Future Benefit Payments, Year Five
2023-2027
Defined Benefit Plan, Expected Future Benefit Payments, Five Fiscal Years Thereafter
Income Tax Disclosure [Abstract]
Current
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
U.S. Federal
Current Federal Tax Expense (Benefit)
State and local
Current State and Local Tax Expense (Benefit)
Total current
Current Income Tax Expense (Benefit)
Deferred
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
U.S. Federal
Deferred Federal Income Tax Expense (Benefit)
State and local
Deferred State and Local Income Tax Expense (Benefit)
Total deferred
Deferred Income Tax Expense (Benefit)
Total
Income Tax Expense (Benefit)
Receivables [Abstract]
Schedule of Accounts, Notes, Loans and Financing Receivable [Table]
Schedule of Accounts, Notes, Loans and Financing Receivable [Table]
Balance Sheet Location [Axis]
Balance Sheet Location [Axis]
Balance Sheet Location [Domain]
Balance Sheet Location [Domain]
Accounts Receivable
Accounts Receivable [Member]
Other Noncurrent Assets
Other Noncurrent Assets [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable-billed
Billed Contracts Receivable
Accounts receivable-unbilled
Unbilled Contracts Receivable
Allowance for doubtful accounts
Allowance for Doubtful Accounts Receivable, Current
Accounts receivable, net
Accounts Receivable, Net, Current
Total accounts receivable, net
Accounts Receivable, Net
Provision for doubtful accounts
Provision for Doubtful Accounts
Payables and Accruals [Abstract]
Schedule of accounts payable and other accrued expenses
Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]
Compensation Related Costs [Abstract]
Bonus
Accrued Bonuses, Current
Retirement
Pension and Other Postretirement and Postemployment Benefit Plans, Liabilities, Current
Vacation
Accrued Vacation, Current
Other
Other Employee-related Liabilities, Current
Total accrued compensation and benefits
Employee-related Liabilities, Current
Fair Value Disclosures [Abstract]
Recurring Fair Value Measurements
Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]
Schedule of Defined Benefit Plans Disclosures [Table]
Schedule of Defined Benefit Plans Disclosures [Table]
Title of Individual [Axis]
Title of Individual [Axis]
Relationship to Entity [Domain]
Relationship to Entity [Domain]
Officer and Vice President
Officer and Vice President [Member]
Officer and Vice President [Member]
Officer
Officer [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Axis]
Defined Benefit Plans and Other Postretirement Benefit Plans [Axis]
Defined Benefit Plans and Other Postretirement Benefit Plans [Domain]
Defined Benefit Plan and Other Postretirement Benefit Plan [Domain]
Officer Medical Plan
Other Pension Plan, Postretirement or Supplemental Plans [Member]
Retired Officers' Bonus Plan
Supplemental Employee Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation, beginning of the year
Defined Benefit Plan, Benefit Obligation
Service cost
Defined Benefit Plan, Service Cost
Interest cost
Defined Benefit Plan, Interest Cost
Net actuarial (gain) loss
Defined Benefit Plan, Actuarial Gain (Loss)
Benefits paid
Defined Benefit Plan, Benefits Paid
Benefit obligation, end of the year
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets, beginning of the year
Defined Benefit Plan, Fair Value of Plan Assets
Employer contributions
Defined Benefit Plan, Contributions by Employer
Fair value of plan assets, end of the year
Defined benefit plan, funded status of plan
Defined Benefit Plan, Funded Status of Plan
Subsequent Events [Abstract]
Subsequent Events
Subsequent Events [Text Block]
Valuation and Qualifying Accounts [Abstract]
SUPPLEMENTAL FINANCIAL INFORMATION
Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]
Accounting Policies [Abstract]
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 and Cash Equivalents
Cash and Cash Equivalents, Unrestricted Cash and Cash Equivalents, Policy [Policy Text Block]
Valuation of Accounts Receivable
Trade and Other Accounts Receivable, Policy [Policy Text Block]
Concentrations of Credit Risk
Concentration Risk, Credit Risk, Policy [Policy Text Block]
Property and Equipment
Property, Plant and Equipment, Policy [Policy Text Block]
Business Combinations
Business Combinations Policy [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]
Long-Lived Assets
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]
Income Taxes
Income Tax, Policy [Policy Text Block]
Comprehensive Income
Comprehensive Income, Policy [Policy Text Block]
Share-Based Payments
Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]
Defined Benefit Plan and Other Postretirement Benefits
Pension and Other Postretirement Plans, Policy [Policy Text Block]
Self-Funded Medical Plans
Self Insurance Reserve [Policy Text Block]
Fair Value Measurements
Fair Value Measurement, Policy [Policy Text Block]
Recent Accounting Pronouncements
New Accounting Pronouncements, Policy [Policy Text Block]
Statement of Comprehensive Income [Abstract]
Net income
Net Income (Loss) Attributable to Parent
Change in postretirement plan costs, net of tax
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), Net of Tax
Comprehensive income
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Finite-Lived Intangible Assets [Table]
Schedule of Finite-Lived Intangible Assets [Table]
Range [Axis]
Range [Axis]
Range [Domain]
Range [Domain]
Minimum
Minimum [Member]
Maximum
Maximum [Member]
Weighted Average
Weighted Average [Member]
Finite-Lived Intangible Assets by Major Class [Axis]
Finite-Lived Intangible Assets by Major Class [Axis]
Finite-Lived Intangible Assets, Major Class Name [Domain]
Finite-Lived Intangible Assets, Major Class Name [Domain]
Customer relationships and other amortizable intangible assets
Order or Production Backlog [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life
Finite-Lived Intangible Asset, Useful Life
Amortization of intangible assets
Amortization of Intangible Assets
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2018
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months
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
Finite-Lived Intangible Assets, Net Carrying Value
Finite-Lived Intangible Assets, Net
Components of net postretirement medical expense
Schedule of Net Benefit Costs [Table Text Block]
Weighted-average discount rate for benefit obligation
Schedule of Assumptions Used [Table Text Block]
Assumed health care cost trend rates
Schedule of Health Care Cost Trend Rates [Table Text Block]
Effect of one-percentage-point change in assumed health care cost trend rates
Schedule of Effect of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates [Table Text Block]
Change in Benefit Obligation
Schedule of Changes in Projected Benefit Obligations [Table Text Block]
Change in fair value of plan assets
Schedule of Changes in Fair Value of Plan Assets [Table Text Block]
Expected future benefit payments
Schedule of Expected Benefit Payments [Table Text Block]
Income tax reserve
Liability for Uncertainty in Income Taxes, Noncurrent
Pre-acquisition uncertain tax positions
Pre-acquisition uncertain tax positions
Pre-acquisition uncertain tax positions
Income tax reserve, accrued penalties and interest
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued
Release of indemnified pre-acquisition uncertain tax positions
Release of indemnified pre-acquisition uncertain tax positions
Release of Indemnified Pre-Acquisition Uncertain Tax Positions
Pre-acquisition Uncertain Tax Positions that May Be Indemnified Under the Remaining Available Deferred Payment Obligation
Pre-acquisition Uncertain Tax Positions that May Be Indemnified Under the Remaining Available Deferred Payment Obligation
Pre-acquisition Uncertain Tax Positions that May Be Indemnified Under the Remaining Available Deferred Payment Obligation
Reconciliation of the beginning and ending amount of potential tax benefits
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning of year
Unrecognized Tax Benefits
Increases in prior year position
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions
Increases in current year position
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions
Settlements with taxing authorities
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities
Lapse of statute of limitations
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations
End of year
Accrued interest and penalties
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense
Business Combinations [Abstract]
Schedule of Consideration Transferred
Schedule of Business Acquisitions, by Acquisition [Table Text Block]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]
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]
Award Type [Axis]
Award Type [Axis]
Award Type [Domain]
Equity Award [Domain]
Stock Options
Employee Stock Option [Member]
Dividend, Type [Axis]
Dividend, Type [Axis]
Dividend, Type [Axis]
Dividend, Type [Domain]
Dividend, Type [Domain]
Dividend, Type [Domain]
Special Cash Dividend
Special Cash Dividend [Member]
Special Cash Dividend [Member]
Ordinary Dividend
Ordinary Cash Dividend [Member]
Ordinary Cash Dividend [Member]
Plan Name [Axis]
Plan Name [Axis]
Plan Name [Domain]
Plan Name [Domain]
EIP
Amended and Restated Equity Incentive Plan [Member]
Amended and Restated Equity Incentive Plan [Member]
Rollover Plan
Rollover Options [Member]
Rollover Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividends declared per share
Common Stock, Dividends, Per Share, Declared
Share-based Compensation Arrangement by Share-based Payment Award, Options, Dividend Equivalent, Per Share
Share-based Compensation Arrangement by Share-based Payment Award, Options, Dividend Equivalent, Per Share
Share-based Compensation Arrangement by Share-based Payment Award, Options, Dividend Equivalent, Per Share
Cash payment for special dividends
Payments of Capital Distribution
Share-based compensation arrangement, plan modification, incremental compensation cost recognized in period
Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Incremental Compensation Cost Recognized
Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Incremental Compensation Cost Recognized
Share-based compensation arrangement, plan modification, incremental compensation cost, deferred
Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Deferred Incremental Compensation Cost
Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Deferred Incremental Compensation Cost
Share-based compensation arrangement, plan modification, incremental compensation cost, deferred, recognition period
Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Deferred Incremental Compensation Cost, Recognition Period
Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Deferred Incremental Compensation Cost, Recognition Period
Recorded and unrecorded stock-based compensation liability, current and noncurrent
Deferred Compensation Share-based Arrangements, Liability, Current and Noncurrent, Recorded and Unrecorded
Deferred Compensation Share-based Arrangements, Liability, Current and Noncurrent, Recorded and Unrecorded
Stock-based compensation liability, current
Deferred Compensation Share-based Arrangements, Liability, Current
Unrecorded stock-based compensation liability, current and noncurrent
Deferred Compensation Share-based Arrangements, Liability, Current and Noncurrent, Unrecorded
Deferred Compensation Share-based Arrangements, Liability, Current and Noncurrent, Unrecorded
Unrecognized compensation cost, amortization period
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition
GOODWILL AND INTANGIBLE ASSETS
Goodwill and Intangible Assets Disclosure [Text Block]
Related Party Transactions [Abstract]
RELATED-PARTY TRANSACTIONS
Related Party Transactions Disclosure [Text Block]
Quarterly Financial Information Disclosure [Abstract]
Schedule of quarterly financial information
Quarterly Financial Information [Table Text Block]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of operating segments
Number of Operating Segments
Number of employees
Entity Number of Employees
STOCK-BASED COMPENSATION
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]
Vice Presidents
Vice President [Member]
Weighted-average discount rate for benefit obligation
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate
Commitments and Contingencies Disclosure [Abstract]
Future minimum operating lease payments
Operating Leases of Lessee Disclosure [Table Text Block]
EMPLOYEE BENEFIT PLANS
Pension and Other Postretirement Benefits Disclosure [Text Block]
Schedule of Business Acquisitions, by Acquisition [Table]
Schedule of Business Acquisitions, by Acquisition [Table]
Business Acquisition [Axis]
Business Acquisition [Axis]
Business Acquisition, Acquiree [Domain]
Business Acquisition, Acquiree [Domain]
Aquilent
eGov Holdings, Inc. (d/b/a Aquilent) [Member]
eGov Holdings, Inc. (d/b/a Aquilent)
Business Acquisition [Line Items]
Business Acquisition [Line Items]
Cash purchase price paid to Aquilent shareholders
Payments to Acquire Businesses, Gross
Working capital and other closing adjustments
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Consideration Transferred
Acquired cash on hand
Cash Acquired from Acquisition
Acquisition-related compensation expenses
Business Combination, Separately Recognized Transactions, Additional Disclosures, Acquisition Cost Expensed
Acquisition-related contingent consideration
Business Combination, Contingent Consideration, Liability
Total estimated purchase consideration and liabilities paid at closing
Business Combination, Consideration Transferred
Schedule of Related Party Transactions, by Related Party [Table]
Schedule of Related Party Transactions, by Related Party [Table]
Related Party [Axis]
Related Party [Axis]
Related Party [Domain]
Related Party [Domain]
Affiliated Entity [Member]
Affiliated Entity [Member]
Related Party Transaction [Axis]
Related Party Transaction [Axis]
Related Party Transaction [Domain]
Related Party Transaction [Domain]
Pledge Obligation [Member]
Pledge Obligation [Member]
Pledge Obligation [Member]
Related Party Transaction [Line Items]
Related Party Transaction [Line Items]
Amount of pledge
Due to Affiliate, Current
Management agreement, annual fee
Management Agreement, Annual Fee
Management Agreement, Annual Fee
Management agreement, advisory fees
Related Party Transaction, Management Agreement Advisory Fees
Related Party Transaction, Management Agreement Advisory Fees
Statement of Cash Flows [Abstract]
Cash flows from operating activities
Net Cash Provided by (Used in) Operating Activities [Abstract]
Adjustments to reconcile net income to net cash provided by operating activities:
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Depreciation and amortization
Depreciation, Depletion and Amortization
Stock-based compensation expense
Share-based Compensation
Deferred income taxes
Excess tax benefits from stock-based compensation
Excess Tax Benefit from Share-based Compensation, Operating Activities
Amortization of debt issuance costs and loss on extinguishment
Amortization Of Financing Costs And Discounts and Gain/Loss on Extinguishment of Debt
Amortization Of Financing Costs And Discounts and Loss on Extinguishment of Debt
Losses on dispositions and impairments
Losses on Disposition of Property and Intangible Impairment
Losses on Disposition of Property and Intangible Impairment
Changes in assets and liabilities:
Increase (Decrease) in Operating Capital [Abstract]
Accounts receivable
Increase (Decrease) in Accounts Receivable
Income taxes receivable / payable
Increase (Decrease) in Income Taxes Payable, Net of Income Taxes Receivable
Prepaid expenses and other current assets
Increase (Decrease) in Prepaid Expense and Other Assets
Other long-term assets
Increase (Decrease) in Other Noncurrent Assets
Accrued compensation and benefits
Increase (Decrease) in Employee Related Liabilities
Accounts payable and other accrued expenses
Increase (Decrease) in Accounts Payable and Accrued Liabilities
Accrued interest
Increase (Decrease) in Interest Payable, Net
Income tax reserves
Increase (Decrease) in Reserve for Commissions, Expense and Taxes
Other current liabilities
Increase (Decrease) in Other Operating Liabilities
Other long-term liabilities
Increase (Decrease) in Other Noncurrent Liabilities
Net cash provided by operating activities
Net Cash Provided by (Used in) Operating Activities
Cash flows from investing activities
Net Cash Provided by (Used in) Investing Activities [Abstract]
Purchases of property and equipment
Payments to Acquire Property, Plant, and Equipment
Payments for business acquisitions, net of cash acquired
Payments to Acquire Businesses, Net of Cash Acquired
Insurance proceeds received for damage to equipment
Proceeds from Insurance Settlement, Investing Activities
Net cash used in investing activities
Net Cash Provided by (Used in) Investing Activities
Cash flows from financing activities
Net Cash Provided by (Used in) Financing Activities [Abstract]
Proceeds from issuance of common stock
Proceeds from Issuance of Common Stock
Stock option exercises
Proceeds from Stock Options Exercised
Excess tax benefits from stock-based compensation
Excess Tax Benefit from Share-based Compensation, Financing Activities
Repurchases of common stock
Payments for Repurchase of Common Stock
Cash dividends paid
Payments of Dividends
Dividend equivalents paid to option holders
Repayment of debt
Repayments of Debt
Proceeds from debt issuance
Proceeds from Issuance of Long-term Debt
Net cash used in financing activities
Net Cash Provided by (Used in) Financing Activities
Net increase (decrease) in cash and cash equivalents
Cash and Cash Equivalents, Period Increase (Decrease)
Cash and cash equivalents-beginning of year
Cash and Cash Equivalents, at Carrying Value
Cash and cash equivalents-end of year
Supplemental disclosures of cash flow information
Supplemental Cash Flow Information [Abstract]
Interest
Interest Paid
Income taxes
Income Taxes Paid, Net
Supplemental disclosures of non-cash investing and financing activities
Noncash Investing and Financing Items [Abstract]
Share repurchases transacted but not settled and paid
Share Repurchases Incurred But Not Yet Paid
Share Repurchases Incurred But Not Yet Paid
Contingent consideration arising from businesses acquired
Noncash or Part Noncash Acquisition, Other Liabilities Assumed
Federal statutory income tax rate
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent
Income tax expense computed at U.S. federal statutory rate (35%)
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount
Changes in uncertain tax positions
Effective Income Tax Rate Reconciliation, Tax Contingency, Amount
State and local income taxes, net of federal tax
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount
Meals and entertainment
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Meals and Entertainment, Amount
Other
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount
ACCRUED COMPENSATION AND BENEFITS
Compensation Related Costs, General [Text Block]
Customer relationships
Property, Plant and Equipment [Abstract]
PROPERTY AND EQUIPMENT, NET
Property, Plant and Equipment Disclosure [Text Block]
Class of Stock [Axis]
Class of Stock [Axis]
Class of Stock [Domain]
Class of Stock [Domain]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Unvested, beginning balance
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number
Unvested, beginning balance, 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
Granted
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period
Granted, weighted average grant date fair value
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value
Vested
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period
Vested, weighted average grant date fair value
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value
Forfeited
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period
Forfeited, weighted average grant date fair value
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value
Unvested, ending balance
Unvested, beginning balance, weighted average grant date fair value
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding, beginning balance
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number
Outstanding, beginning balance, weighted average exercise price
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price
Granted
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross
Granted, weighted average exercise price
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price
Forfeited
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period
Forfeited, weighted average exercise price
Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price
Expired
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period
Expired, weighted average exercise price
Share-based Compensation Arrangements by Share-based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price
Exercised
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period
Exercised, weighted average exercise price
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price
Outstanding, ending balance
Outstanding, ending balance, weighted average exercise price
Dividend, option exercise price reduction, per share
Dividend, Option Exercise Price Reduction, Per Share
Dividend, Option Exercise Price Reduction, Per Share
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract]
Unvested, beginning balance
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number
Unvested, beginning balance, weighted average grant date fair value
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value
Granted, weighted average grant date fair value
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value
Vested
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares
Vested, weighted average grant date fair value
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Weighted Average Grant Date Fair Value
Forfeited
Forfeited, weighted average grant date fair value
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested Options Forfeited, Weighted Average Grant Date Fair Value
Unvested, ending balance
Unvested, ending balance, weighted average grant date fair value
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Exercise price, lower range limit
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Lower Range Limit
Exercise price, upper range limit
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Upper Range Limit
Outstanding, ending balance, weighted average remaining contractual life, in years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term
Outstanding, intrinsic value
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value
Stock options exercisable
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number
Stock options exercisable, weighted average exercise price
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price
Stock options exercisable, weighted average remaining contractual life, in years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term
Stock options exercisable, intrinsic value
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value
Equity [Abstract]
ACCUMULATED OTHER COMPREHENSIVE LOSS
Comprehensive Income (Loss) Note [Text Block]
Dividends Declared
Dividends Declared [Table Text Block]
STOCKHOLDERS' EQUITY
Stockholders' Equity Note Disclosure [Text Block]
Statement of Financial Position [Abstract]
Statement [Table]
Statement [Table]
Common stock, Class A
Common Class A [Member]
Non-voting common stock, Class B
Common Class B [Member]
Restricted common stock, Class C
Common Class C [Member]
Special voting common stock, Class E
Common Class E [Member]
Classification of common stock that has different rights than Common Class A, B or C shares, representing the voting rights that accompany options that were issued in exchange for old stock rights that existed prior to the merger with The Carlyle Group.
Statement [Line Items]
Statement [Line Items]
ASSETS
Assets [Abstract]
Current assets:
Assets, Current [Abstract]
Cash and cash equivalents
Accounts receivable, net of allowance
Prepaid expenses and other current assets
Prepaid Expense and Other Assets, Current
Total current assets
Assets, Current
Property and equipment, net of accumulated depreciation
Property, Plant and Equipment, Net
Deferred income taxes
Deferred Tax Assets, Net, Noncurrent
Intangible assets, net of accumulated amortization
Intangible Assets, Net (Excluding Goodwill)
Goodwill
Goodwill
Other long-term assets
Other Assets, Noncurrent
Total assets
Assets
LIABILITIES AND STOCKHOLDERS' EQUITY
Liabilities and Equity [Abstract]
Current liabilities:
Liabilities, Current [Abstract]
Current portion of long-term debt
Long-term Debt, Current Maturities
Accounts payable and other accrued expenses
Accounts Payable and Accrued Liabilities, Current
Accrued compensation and benefits
Other current liabilities
Other Liabilities, Current
Total current liabilities
Liabilities, Current
Long-term debt, net of current portion
Long-term Debt, Excluding Current Maturities
Other long-term liabilities
Other Liabilities, Noncurrent
Total liabilities
Liabilities
Commitments and contingencies (Note 20)
Commitments and Contingencies
Stockholders' equity:
Stockholders' Equity Attributable to Parent [Abstract]
Common stock
Common Stock, Value, Issued
Treasury stock, at cost - 7,013,777 shares at March 31, 2017 and 5,398,596 shares at March 31, 2016
Treasury Stock, Value
Additional paid-in capital
Additional Paid in Capital, Common Stock
Retained earnings
Retained Earnings (Accumulated Deficit)
Accumulated other comprehensive loss
Accumulated Other Comprehensive Income (Loss), Net of Tax
Total stockholders' equity
Stockholders' Equity Attributable to Parent
Total liabilities and stockholders' equity
Liabilities and Equity
Other Liabilities Disclosure [Abstract]
Deferred rent
Deferred Rent Credit, Noncurrent
Postretirement benefit obligatons
Pension and Other Postretirement and Postemployment Benefit Plans, Liabilities, Noncurrent
Other
Other Liabilities and Deferred Revenue, Noncurrent
Total other long-term liabilities
Long-term disability obligation
Postemployment Benefits Liability, Noncurrent
Beginning of year
Other comprehensive income (loss) before reclassifications
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax
Amounts reclassified from accumulated other comprehensive loss
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax
Net current-period other comprehensive income (loss)
Other Comprehensive Income (Loss), Net of Tax
End of year
Supplemental Employee Retirement Plan [Member]
Retired Officers' Bonus Plan, total pension expense
Defined Benefit Plan, Net Periodic Benefit Cost
Benefits paid
Common stock votes per share
Common Stock Votes Per Share
Common stock votes per share
Vendor payables
Accounts Payable, Trade, Current
Accrued expenses
Accrued Liabilities, Current
Total accounts payable and other accrued expenses
Accounts receivable, net
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
Employer Matching Contribution, Percent of Match
Defined Contribution Plan, Employer Matching Contribution, Percent of Match
Employees’ Capital Accumulation Plan, Total expense recognized
Defined Contribution Plan, Cost Recognized
Employees’ Capital Accumulation Plan, Company-paid contributions
Defined Contribution Plan, Employer Discretionary Contribution Amount
Nature of Error [Axis]
Nature of Error [Axis]
Nature of Error [Domain]
Nature of Error [Domain]
Impact to general and administrative expense
Impact to general and administrative expense [Member]
Impact to general and administrative expense [Member]
Deferred Compensation Arrangement with Individual, Annual Cash Award Granted per Year of Service, Amount
Deferred Compensation Arrangement with Individual, Annual Cash Award Granted per Year of Service, Amount
Deferred Compensation Arrangement with Individual, Annual Cash Award Granted per Year of Service, Amount
Cumulative effect of change recognized in earnings
Quantifying Misstatement in Current Year Financial Statements, Amount
Accrued compensation and benefits
Schedule of Accrued Compensation And Benefits [Table Text Block]
Schedule of Accrued Compensation And Benefits [Table Text Block]
Director
Director [Member]
Annual Incentive Plan
Annual Incentive Plan [Member]
Annual Incentive Plan [Member]
Restricted Stock
Restricted Stock [Member]
Restricted Stock Units (RSUs)
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross
Share-Based Compensation Arrangement By Share-based Payment Award, Options, Grants In Period, Grant Date Fair Value
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Grant Date Fair Value
share-based compensation arrangement by share-based payment award, options, grants in period, grant date fair value
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant
Share-Based Compensation Arrangement By Share-based Payment Award, Annual Incentive Payment, Equity Portion, Increase Percentage
Share-Based Compensation Arrangement By Share-based Payment Award, Annual Incentive Payment, Equity Portion, Increase Percentage
Share-Based Compensation Arrangement By Share-based Payment Award, Annual Incentive Payment, Equity Portion, Increase Percentage
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period
Share Based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Fair Value
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value
Share Price
Share Price
Employee stock purchase plan, aggregate shares
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized
Repurchase of common stock, in shares
Treasury Stock, Shares, Acquired
Repurchase of common stock, cost per share
Treasury Stock Acquired, Average Cost Per Share
Repurchase of common stock
Treasury Stock, Value, Acquired, Cost Method
Loss Contingencies [Table]
Loss Contingencies [Table]
Loss Contingency Nature [Axis]
Loss Contingency Nature [Axis]
Loss Contingency, Nature [Domain]
Loss Contingency, Nature [Domain]
Former stockholder litigation
Former Stockholder Litigation [Member]
Former Stockholder Litigation [Member]
Litigation Case [Axis]
Litigation Case [Axis]
Litigation Case Type [Domain]
Litigation Case [Domain]
RICO
Racketeer Influenced and Corrupt Organizations Act [Member]
Racketeer Influenced and Corrupt Organizations Act [Member]
Litigation Court [Axis]
Litigation Court [Axis]
Litigation Court [Axis]
Litigation Court Type [Domain]
Litigation Court Type [Domain]
Litigation Court Type [Domain]
United States Court of Appeals for the Ninth Circuit
United States Court of Appeals for the Ninth Circuit [Member]
United States Court of Appeals for the Ninth Circuit [Member]
United States District Court for the Southern District of New York
United States Court of Appeals for the Second Circuit [Member]
United States Court of Appeals for the Second Circuit [Member]
Loss Contingencies [Line Items]
Loss Contingencies [Line Items]
Loss contingencies, number of plaintiffs
Loss Contingency, Number of Plaintiffs
Loss contingencies, new claims filed, number
Loss Contingency, New Claims Filed, Number
Loss contingencies, claims amended, number
Loss Contingency, Claims Amended, Number
Loss Contingency, Claims Amended, Number
Loss contingencies, claims dismissed, number
Loss Contingency, Claims Settled and Dismissed, Number
Loss contingencies, claims settled, number
Loss Contingency, Claims Settled, Number
Loss contingencies, pending claims, number
Loss Contingency, Pending Claims, Number
Loss contingencies, damages sought, value
Loss Contingency, Damages Sought, Value
Statement of Stockholders' Equity [Abstract]
Equity Components [Axis]
Equity Components [Axis]
Equity Component [Domain]
Equity Component [Domain]
Common Stock
Common Stock [Member]
Treasury Stock
Treasury Stock [Member]
Additional Paid-in Capital
Additional Paid-in Capital [Member]
(Accumulated Deficit) Retained Earnings
Retained Earnings [Member]
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent [Member]
Balance (shares)
Shares, Outstanding
Balance
Issuance of common stock, in shares
Stock Issued During Period, Shares, New Issues
Issuance of common stock
Stock Issued During Period, Value, New Issues
Stock options exercised, in shares
Stock options exercised
Stock Issued During Period, Value, Stock Options Exercised
Excess tax benefits from the exercise of stock options
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation
Share exchange, in shares
Stock Issued During Period Shares, Share Exchange
Stock ssued During Period Shares, Share Exchange
Share exchange
Stock Issued During Period, Value Share Exchange
Stock Issued During Period, Value Share Exchange
Repurchase of common stock, in shares
Repurchase of common stock
Recognition of liability related to future stock option exercises (Note 17)
Adjustments To Additional Paid In Capital Recognition Of Liability Related To Future Stock Option Exercises
Adjustments To Additional Paid In Capital Recognition Of Liability Related To Future Stock Option Exercises
Comprehensive income
Dividends paid
Dividends, Cash
Stock-based compensation expense
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition
Balance (shares)
Balance
Health care cost trend rate assumed for next year, Pre 65
Defined Benefit Plan, Health Care Cost Trend Rate Assumed For Next Fiscal Year, Pre 65
Defined Benefit Plan, Health Care Cost Trend Rate Assumed For Next Fiscal Year, Pre 65
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate), Pre 65
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate, Pre 65
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate, Pre 65
Year that the rate reaches the ultimate trend rate, Pre 65
Defined Benefit Plan, Year That Rate Reaches Ultimate Trend Rate, Pre 65
Defined Benefit Plan, Year That Rate Reaches Ultimate Trend Rate, Pre 65
Health care cost trend rate assumed for next year, Post 65
Defined Benefit Plan, Health Care Cost Trend Rate Assumed For Next Fiscal Year, Post 65
Defined Benefit Plan, Health Care Cost Trend Rate Assumed For Next Fiscal Year, Post 65
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate), Post 65
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate, Post 65
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate, Post 65
Year that the rate reaches the ultimate trend rate, Post 65
Defined Benefit Plan, Year That Rate Reaches Ultimate Trend Rate, Post 65
Defined Benefit Plan, Year That Rate Reaches Ultimate Trend Rate, Post 65
Effect of one percentage point increase on total of service and interest cost
Defined Benefit Plan, Effect of One Percentage Point Increase on Service and Interest Cost Components
Effect of one percentage point decrease on total of service and interest cost
Defined Benefit Plan, Effect of One Percentage Point Decrease on Service and Interest Cost Components
Effect of one percentage point increase on postretirement benefit obligation
Defined Benefit Plan, Effect of One Percentage Point Increase on Accumulated Postretirement Benefit Obligation
Effect of one percentage point decrease on postretirement benefit obligation
Defined Benefit Plan, Effect of One Percentage Point Decrease on Accumulated Postretirement Benefit Obligation
Deferred payment obligation, original amount
Deferred Payment Obligation, original amount
Deferred Payment Obligation, original amount
Deferred payment obligation, term
Deferred Payment Obligation Term
Deferred Payment Obligation Term
Deferred payment obligation, payment pursuant of the Merger Agreement
Deferred Payment Obligation, Payment, Persuant of the Merger Agreement
Deferred Payment Obligation, Payment, Persuant of the Merger Agreement
Deferred payment obligation, payment
Deferred Payment Obligation, Payment
Deferred Payment Obligation, Payment
Deferred payment obligation, accrued interest payment
Deferred Payment Obligation, Interest Payment
Deferred Payment Obligation, Interest Payment
Deferred payment obligation
Deferred Payment Obligation
Deferred Payment Obligation
Indemnified pre-acquisition uncertain tax positions
Interest rate per six-month period on unpaid deferred payment obligation
Interest Rate Per Six-Month Period on Unpaid Deferred Payment Obligation
Interest Rate Per Six-Month Period on Unpaid Deferred Payment Obligation
Accrued interest
Accrued Interest on Deferred Payment Obligation
Accrued Interest on Deferred Payment Obligation
Deferred payment obligation, amount recorded in the consolidated balance sheets
Liabilities of Business Transferred under Contractual Arrangement, Current and Noncurrent
Liabilities of Business Transferred under Contractual Arrangement, Current and Noncurrent
Earnings Per Share [Abstract]
Reconciliation of the income used to compute basic and diluted EPS
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Schedule of Valuation and Qualifying Accounts [Table Text Block]
Schedule of Valuation and Qualifying Accounts [Table Text Block]
Schedule of Valuation and Qualifying Accounts [Table Text Block]
ACCOUNTS PAYABLE AND OTHER ACCRUED EXPENSES
Accounts Payable and Accrued Liabilities Disclosure [Text Block]
Customer Relationship
Customer Relationships [Member]
Income Statement Location [Axis]
Income Statement Location [Axis]
Income Statement Location [Domain]
Income Statement Location [Domain]
General and administrative expenses
General and Administrative Expense [Member]
Preliminary transaction costs
Business Acquisition, Transaction Costs
Customer-relationship intangible assets
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill
Finite-lived intangible asset, useful life (in years)
Tax indemnification liability
Business Combination, Tax Indemnification Liability
Business Combination, Tax Indemnification Liability
Income tax uncertainty
Goodwill
Employee Stock Purchase Plan
Employee Stock Purchase Plan [Member]
Employee Stock Purchase Plan [Member]
Employee stock purchase plan, purchase price discount from the fair market value
Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Purchase Date
Stock Issued During Period, Shares, Employee Stock Purchase Plans
Stock Issued During Period, Shares, Employee Stock Purchase Plans
Share repurchase program, amount authorized
Stock Repurchase Program, Authorized Amount
Share repurchase program, remaining authorized repurchase amount
Stock Repurchase Program, Remaining Authorized Repurchase Amount
Gross Carrying Value
Finite-Lived Intangible Assets, Gross
Accumulated Amortization
Finite-Lived Intangible Assets, Accumulated Amortization
Impairment of Intangible Assets, Finite-lived
Impairment of Intangible Assets, Finite-lived
Intangible assets
Schedule of Intangible Assets and Goodwill [Table Text Block]
Expected amortization expense for intangible assets
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]
Valuation and Qualifying Accounts Disclosure [Table]
Valuation and Qualifying Accounts Disclosure [Table]
Valuation Allowances and Reserves Type [Axis]
Valuation Allowances and Reserves Type [Axis]
Valuation Allowances and Reserves [Domain]
Valuation Allowances and Reserves [Domain]
Allowance for doubtful accounts
Allowance for Doubtful Accounts, Continuing Operations [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Valuation and Qualifying Accounts Disclosure [Line Items]
Movement in Valuation Allowances and Reserves [Roll Forward]
Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance
Valuation Allowances and Reserves, Balance
Provision for doubtful accounts
Valuation Allowances and Reserves, Additions for Charges to Cost and Expense
Charges against allowance
Valuation Allowances and Reserves, Deductions
Ending balance
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]
Secured Debt
Secured Debt [Member]
Debt Instrument [Axis]
Debt Instrument [Axis]
Debt Instrument, Name [Domain]
Debt Instrument, Name [Domain]
Term Loan A
Tranche-A Loans [Member]
Tranche A Loans [Member]
Term Loan B
Tranche B Loans [Member]
Tranche B Loans [Member]
Debt Instrument [Line Items]
Debt Instrument [Line Items]
Total
Long-term Debt, Gross
2018
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months
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
Other Expense [Member]
Other Expense [Member]
Revolving Credit Facility
Revolving Credit Facility [Member]
Letter of Credit
Letter of Credit [Member]
Variable Rate [Axis]
Variable Rate [Axis]
Variable Rate [Domain]
Variable Rate [Domain]
Overnight Federal Funds Rate [Member]
Overnight Federal Funds Rate [Member]
Overnight Federal Funds Rate
London Interbank Offered Rate (LIBOR)
London Interbank Offered Rate (LIBOR) [Member]
Alternative Base Rate (ABR) [Member]
Alternative Base Rate (ABR) [Member]
Alternative Base Rate (ABR) [Member]
Proceeds from Issuance of Other Long-term Debt
Proceeds from Issuance of Other Long-term Debt
Write off of Deferred Debt Issuance Cost
Write off of Deferred Debt Issuance Cost
Write off of debt issuance costs and creditor fees not qualifying for deferral
Write off of debt issuance costs and creditor fees not qualifying for deferral
Write off of debt issuance costs and creditor fees not qualifying for deferral
Term loan, face amount
Debt Instrument, Face Amount
Proceeds from Issuance of Debt
Proceeds from Issuance of Debt
Revolving credit facility, maximum borrowing capacity
Line of Credit Facility, Maximum Borrowing Capacity
Long-term Debt, Maximum Expanded Loan Facility
Long-term Debt, Maximum Expanded Loan Facility
Long-Term Debt, Maximum Expanded Loan Facility
Proceeds from line of credit
Proceeds from Lines of Credit
Revolving credit facility, amount outstanding
Long-term Line of Credit
Quarterly periodic payment percentage, principal
Debt Instrument, Quarterly Periodic Payment Percentage, Principal
Debt Instrument, Quarterly Periodic Payment Percentage, Principal
Long-term debt, basis spread on variable rate
Debt Instrument, Basis Spread on Variable Rate
Line of Credit Facility, Commitment Fee Percentage
Line of Credit Facility, Commitment Fee Percentage
Interest Paid
INCOME TAXES
Income Tax Disclosure [Text Block]
Other long-term liabilities
Schedule of Other Assets and Other Liabilities [Table Text Block]
UNAUDITED QUARTERLY FINANCIAL DATA
Quarterly Financial Information [Text Block]
Long-term Debt, Current and Noncurrent [Abstract]
Long-term Debt, Current and Noncurrent [Abstract]
Interest rate
Debt Instrument, Interest Rate, Effective Percentage
Line of Credit Facility, Interest Rate at Period End
Line of Credit Facility, Interest Rate at Period End
Long-term Debt, Gross
Revolving credit facility
Unamortized debt issuance costs and discount on debt
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net
Long-term debt
Long-term Debt
Less: Current portion of long-term debt
Preliminary allocation:
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net [Abstract]
Current assets
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets
Other tangible assets
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets
Current liabilities
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities
Tax indemnification liability
Income tax uncertainty
Estimated total purchase consideration and liabilities paid at closing
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net
Subsequent Event [Table]
Subsequent Event [Table]
5.125% Senior Notes Due 2025
Senior Notes Due 2025 [Member]
Senior Notes Due 2025 [Member]
Senior Notes
Senior Notes [Member]
Derivative Instrument [Axis]
Derivative Instrument [Axis]
Derivative Contract [Domain]
Derivative Contract [Domain]
Interest Rate Swap
Interest Rate Swap [Member]
Subsequent Event Type [Axis]
Subsequent Event Type [Axis]
Subsequent Event Type [Domain]
Subsequent Event Type [Domain]
Subsequent Event
Subsequent Event [Member]
Subsequent Event [Line Items]
Subsequent Event [Line Items]
Number of interest rate derivatives held
Number of Interest Rate Derivatives Held
Number of different financial institutions entered into agreement with
Number Of Different Financial Institutions Entered Into Agreement With
Number Of Different Financial Institutions Entered Into Agreement With
Notional amount
Derivative, Notional Amount
Basis spread on variable rate
Derivative, Basis Spread on Variable Rate
Aggregate principal amount
Debt Instrument, Interest Rate, Stated Percentage
Debt Instrument, Interest Rate, Stated Percentage
Stock repurchased during period, value
Stock Repurchased During Period, Value
Stock repurchased during period, shares
Stock Repurchased During Period, Shares
Dividends payable, date declared
Dividends Payable, Date Declared
Dividends payable, amount (in usd per share)
Dividends Payable, Amount Per Share
Dividends payable, date to be paid
Dividends Payable, Date to be Paid
Dividends payable, date of record
Dividends Payable, Date of Record
Unrecognized compensation cost related to unvested stock-based compensation agreements
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized
2018
Unrecognized Compensation Cost, Next 12 Months
Unrecognized Compensation Cost, Next 12 Months
2019
Unrecognized Compensation Cost, Year Two
Unrecognized Compensation Cost, Year Two
2020
Unrecognized Compensation Cost, Year Three
Unrecognized Compensation Cost, Year Three
2021
Unrecognized Compensation Cost, Year Four
Unrecognized Compensation Cost, Year Four
2022
Unrecognized Compensation Cost, Year Five
Unrecognized Compensation Cost, Year Five
Components of property and equipment, net
Property, Plant and Equipment [Table Text Block]
Schedule of Earnings Per Share, Basic and Diluted, by Common Class, Including Two Class Method [Table]
Schedule of Earnings Per Share Basic And Diluted by Common Class [Table]
Schedule of Earnings Per Share Basic And Diluted by Common Class [Table]
Antidilutive Securities [Axis]
Antidilutive Securities [Axis]
Antidilutive Securities, Name [Domain]
Antidilutive Securities, Name [Domain]
Earnings Per Share, Basic and Diluted, by Common Class, Including Two Class Method [Line Items]
Schedule of Earnings Per Share Basic And Diluted by Common Class [Line Items]
Schedule of Earnings Per Share Basic And Diluted by Common Class [Line Items]
Earnings for basic computations
Undistributed Earnings, Basic
Weighted-average common shares outstanding for basic computations
Weighted Average Number of Shares Outstanding, Basic
Earnings for diluted computations
Undistributed Earnings, Diluted
Dilutive stock options and restricted stock
Weighted Average Number Diluted Shares Outstanding Adjustment
Average number of common shares outstanding for diluted computations
Weighted Average Number of Shares Outstanding, Diluted
Earnings per common share, Basic
Earnings Per Share, Basic
Earnings per common share, Diluted
Earnings Per Share, Diluted
Unvested shares participating in the payment of the Company's dividends declared
Incremental Common Shares Attributable to Participating Nonvested Shares with Non-forfeitable Dividend Rights
Payments of Dividends
Undistributed earnings (loss) allocated to participating securities, basic
Undistributed Earnings (Loss) Allocated to Participating Securities, Basic
Undistributed earnings (loss) allocated to participating securities, diluted
Undistributed Earnings (Loss) Allocated to Participating Securities, Diluted
Antidilutive options excluded from the computation of EPS
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Deferred payment obligation
Deferred Payment Obligation [Table Text Block]
Deferred Payment Obligation [Table Text Block]
Fair Value Measurements, Recurring and Nonrecurring [Table]
Fair Value Measurements, Recurring and Nonrecurring [Table]
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]
Asset Class [Axis]
Asset Class [Axis]
Fair Value by Asset Class [Domain]
Asset Class [Domain]
Cash and cash equivalents
Cash [Member]
Money market fund
Money Market Funds [Member]
Liability Class [Axis]
Liability Class [Axis]
Fair Value by Liability Class [Domain]
Fair Value by Liability Class [Domain]
Contingent Consideration Liability
Contingent Consideration [Member]
Contingent Consideration [Member]
Liability
Other Noncurrent Liabilities [Member]
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]
Total cash and cash equivalents
Cash and Cash Equivalents, Fair Value Disclosure
Total liabilities
Liabilities, Fair Value Disclosure, Recurring
Business Combination, Contingent Consideration, Liability, Noncurrent
Business Combination, Contingent Consideration, Liability, Noncurrent
Money market funds, net asset value per share
Cash And Cash Equivalents Invested In Money Market Funds, Net Asset Value, Per Share
Cash And Cash Equivalents Invested In Money Market Funds, Net Asset Value, Per Share
Interest Expense, Debt
Interest Expense, Debt
Amortization of Debt Issuance Costs (DIC) and Original Issue Discount (OID)
Amortization of Debt Issuance Costs and Discounts
Interest Expense, Other
Interest Expense, Other
Interest Expense
Interest Expense
Debt
Schedule of Debt [Table Text Block]
Future debt principal repayments
Schedule of Maturities of Long-term Debt [Table Text Block]
Interest expense
Interest Income and Interest Expense Disclosure [Table Text Block]
Unrecognized gross actuarial gain
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), Net Gains (Losses), before Tax
Unrecognized actuarial gain, tax
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Tax
Amount of tax expense (benefit) related to (increase) decrease in the value of the projected benefit obligation related to a change in an actuarial assumption and increase (decrease) in the value of the plan assets resulting from experience different from that assumed, that has not been recognized in net periodic benefit (cost) credit.
Amount to be amortized from accumulated other comprehensive income (loss) next fiscal year
Defined Benefit Plan, Future Amortization of Gain (Loss)
Net prior service cost, accumulated other comprehensive income net periodic cost in fiscal 2016
Defined Benefit Plan, Future Amortization of Prior Service Cost (Credit)
Net transition (asset) obligation, accumulated other comprehensive income net periodic cost in fiscal 2016
Defined Benefit Plan, Future Amortization of Transition Obligation (Asset)
DEFERRED PAYMENT OBLIGATION
Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Noncurrent [Text Block]
Dividend yield
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate
Expected volatility
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate
Risk-free interest rate
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate
Expected life (in years)
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term
Segment Reporting [Abstract]
Number of reportable segments
Number of Reportable Segments
FAIR VALUE MEASUREMENTS
Fair Value Disclosures [Text Block]
Common stock, par value
Common Stock, Par or Stated Value Per Share
Common stock, shares authorized
Common Stock, Shares Authorized
Common stock, shares issued
Common Stock, Shares, Issued
Common stock, shares outstanding
Common Stock, Shares, Outstanding
Treasury stock, shares
Treasury Stock, Shares
Components of income tax expense
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Effective income tax rate reconciliation
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Components of deferred tax assets and liabilities
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Potential tax benefits roll forward
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]
COMMITMENTS AND CONTINGENCIES
Commitments and Contingencies Disclosure [Text Block]
Document and Entity Information [Abstract]
Entities [Table]
Entities [Table]
Entity Information [Line Items]
Entity Information [Line Items]
Entity Registrant Name
Entity Registrant Name
Entity Central Index Key
Entity Central Index Key
Document Type
Document Type
Document Period End Date
Document Period End Date
Amendment Flag
Amendment Flag
Document Fiscal Year Focus
Document Fiscal Year Focus
Document Fiscal Period Focus
Document Fiscal Period Focus
Current Fiscal Year End Date
Current Fiscal Year End Date
Entity Filer Category
Entity Filer Category
Entity Well-known Seasoned Issuer
Entity Well-known Seasoned Issuer
Entity Voluntary Filers
Entity Voluntary Filers
Entity Current Reporting Status
Entity Current Reporting Status
Entity Public Float
Entity Public Float
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
Schedule of 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]
Furniture and equipment
Furniture and Fixtures [Member]
Computer equipment
Computer Equipment [Member]
Software
Software and Software Development Costs [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life
Property, Plant and Equipment, Useful Life
Leasehold improvements
Leasehold Improvements [Member]
Internally developed software
Software Development [Member]
Property and equipment, gross
Property, Plant and Equipment, Gross
Accumulated depreciation and amortization
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment
Property and equipment, net
Depreciation and amortization expense related to property and equipment
Depreciation
Reduction to gross cost and accumulated depreciation for zero net book value assets
Accumulated Depreciation, Depletion and Amortization, Sale or Disposal of Property, Plant and Equipment
Deferred income tax assets:
Deferred Tax Assets, Net [Abstract]
Accrued expenses
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities
Accrued compensation
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Compensation
Stock-based compensation
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost
Pension and postretirement benefits
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Postretirement Benefits
Property and equipment
Deferred Tax Assets, Property, Plant and Equipment
Capital loss carryforwards
Deferred Tax Assets, Net Operating Loss & Capital Loss Carryforwards
Deferred Tax Assets, Net Operating Loss & Capital Loss Carryforwards
Deferred rent and tenant allowance
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Deferred Rent
Extended disability benefits
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Benefits
Other
Deferred Tax Assets, Other
Total gross deferred income tax assets
Deferred Tax Assets, Gross
Less: Valuation allowance
Deferred Tax Assets, Valuation Allowance
Total net deferred income tax assets
Deferred Tax Assets, Net of Valuation Allowance
Deferred income tax liabilities:
Deferred Tax Liabilities, Net [Abstract]
Unbilled receivables
Deferred Tax Liabilities, Current Accounts Receivable, Unbilled
Amount of deferred tax liability attributable to taxable temporary differences from unbilled current accounts receivable.
Intangible assets
Deferred Tax Liabilities, Intangible Assets
Debt issuance costs
Deferred Tax Liabilities, Deferred Expense, Debt Issuance Costs
Other
Deferred Tax Liabilities, Other
Total deferred income tax liabilities
Deferred Tax Liabilities, Gross
Net deferred income tax asset
Deferred Tax Assets, Net
Schedule of Indefinite-Lived Intangible Assets [Table]
Schedule of Indefinite-Lived Intangible Assets [Table]
Indefinite-lived Intangible Assets by Major Class [Axis]
Indefinite-lived Intangible Assets [Axis]
Indefinite-lived Intangible Assets, Major Class Name [Domain]
Indefinite-lived Intangible Assets, Major Class Name [Domain]
Trade name
Trade Names [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets
Indefinite-Lived Intangible Assets (Excluding Goodwill)
Intangible Assets
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Intangible Assets, Gross
Intangible Assets, Gross (Excluding Goodwill)
Intangible Assets, Net
EARNINGS PER SHARE
Earnings Per Share [Text Block]
Acquisition
Business Combination Disclosure [Text Block]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Basis of Presentation and Significant Accounting Policies [Text Block]
Schedule of accumulated other comprehensive loss
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Reclassifications out of accumulated other comprehensive loss to net income
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]
Income Statement [Abstract]
Revenue
Sales Revenue, Services, Net
Operating costs and expenses:
Costs and Expenses [Abstract]
Cost of revenue
Cost of Services, Direct Labor, Employee Benefits, and Overhead
Cost of revenue includes direct labor, related employee benefits, and overhead.
Billable expenses
Billable Expenses
Billable expenses include direct subcontractor expenses, travel expenses, and other expenses incurred to perform on contracts.
General and administrative expenses
General and Administrative Expense
Total operating costs and expenses
Costs and Expenses
Operating income
Operating Income (Loss)
Interest expense
Other, net
Other Nonoperating Income (Expense)
Income before income taxes
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest
Income tax expense
Net income
Earnings per common share (Note 3):
Basic (in dollars per share)
Diluted (in dollars per share)
BUSINESS OVERVIEW
Nature of Operations [Text Block]
BUSINESS SEGMENT INFORMATION
Segment Reporting Disclosure [Text Block]
Stock-based compensation expense recognized in the consolidated statements of operations
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]
Schedule of unrecognized compensation cost
Schedule of Unrecognized Compensation Cost, Nonvested Awards [Table Text Block]
Shares withheld to cover taxes
Class of Treasury Stock [Table Text Block]
Black Scholes weighted average assumptions
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
Recorded stock-based compensation liabilities
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]
Unvested restricted stock activity
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]
Stock options outstanding
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
Dividend Equivalent
Dividend equivalent [Member]
Dividend equivalent [Member]
Dividends
Dividends
Dividends paid
Common Stock, Dividends, Per Share, Cash Paid
Reclassification out of Accumulated Other Comprehensive Income [Table]
Reclassification out of Accumulated Other Comprehensive Income [Table]
Reclassification out of Accumulated Other Comprehensive Income [Axis]
Reclassification out of Accumulated Other Comprehensive Income [Axis]
Reclassification out of Accumulated Other Comprehensive Income [Domain]
Reclassification out of Accumulated Other Comprehensive Income [Domain]
Reclassification out of Accumulated Other Comprehensive Income
Reclassification out of Accumulated Other Comprehensive Income [Member]
Accumulated Defined Benefit Plans Adjustment
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
Total before tax
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), before Tax
Tax benefit
Net of tax
Net Income (Loss) Available to Common Stockholders, Basic
ACCOUNTS RECEIVABLE, NET
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]
Revenue
Operating income
Income before income taxes
Earnings per common share:
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]
Cost of revenue
Cost of Sales [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense
Allocated Share-based Compensation Expense
OTHER LONG-TERM LIABILITIES
Other Liabilities Disclosure [Text Block]
Net actuarial loss
Defined Benefit Plan, Amortization of Gains (Losses)
Total postretirement medical expense
Rent expense, net
Operating Leases, Rent Expense, Net
Rent expense, sublease rentals
Operating Leases, Rent Expense, Sublease Rentals
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2018
Operating Leases, Future Minimum Payments Due, Next Twelve Months
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
Operating leases, future minimum payments due
Operating Leases, Future Minimum Payments Due
Operating Leases, Future Minimum Payments Due, Sublease Rentals, Fiscal Year Maturity [Abstract]
Operating Leases, Future Minimum Payments Due, Sublease Rentals, Fiscal Year Maturity [Abstract]
Operating Leases, Future Minimum Payments Due, Sublease Rentals, Fiscal Year Maturity [Abstract]
2018
Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals, In Twelve Months
Contractually required future rental payments receivable within twelve months from the balance sheet date on noncancelable subleasing arrangements.
2019
Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals, in Two Years
Contractually required future rental payments receivable within the second year from the balance sheet date on noncancelable subleasing arrangements.
2020
Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals, in Three Years
Contractually required future rental payments receivable within the third year from the balance sheet date on noncancelable subleasing arrangements.
2021
Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals, in Four Years
Contractually required future rental payments receivable within the fourth year from the balance sheet date on noncancelable subleasing arrangements.
2022
Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals, in Five Years
Contractually required future rental payments receivable within the fifth year from the balance sheet date on noncancelable subleasing arrangements.
Thereafter
Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals, Due Thereafter
Contractually required future rental payments receivable after the fifth year from the balance sheet date on noncancelable subleasing arrangements.
Operating leases, future minimum payments due, future minimum sublease rentals
Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals
Concentration Risk [Table]
Concentration Risk [Table]
Guarantor Obligations, Nature [Axis]
Guarantor Obligations, Nature [Axis]
Guarantor Obligations, Nature [Domain]
Guarantor Obligations, Nature [Domain]
Financial Standby Letter of Credit [Member]
Financial Standby Letter of Credit [Member]
Concentration Risk Type [Axis]
Concentration Risk Type [Axis]
Concentration Risk Type [Domain]
Concentration Risk Type [Domain]
Contracts with U.S. government agencies or other U.S. government contractors
Government Contracts Concentration Risk [Member]
Concentration Risk [Line Items]
Concentration Risk [Line Items]
Guarantor Obligations, Current Carrying Value
Guarantor Obligations, Current Carrying Value
Guarantor Obligations, Liquidation Proceeds, Monetary Amount
Guarantor Obligations, Liquidation Proceeds, Monetary Amount
Guarantor Obligations, Facility
Guarantor Obligations, Facility
Guarantor Obligations, Facility
Guarantor Obligations, Available Amount
Guarantor Obligations, Available Amount
Guarantor Obligations, Available Amount
Concentration risk, percentage
Concentration Risk, Percentage
Unfavorable Regulatory Action
Unfavorable Regulatory Action [Member]
Liability for reductions and/or penalties from U.S Governement audits
Loss Contingency Accrual
DEBT
Debt Disclosure [Text Block]
Schedule of Quantifying Prior Year Misstatement Corrected in Current Year Financial Statements [Table]
Schedule of Quantifying Prior Year Misstatement Corrected in Current Year Financial Statements [Table]
Impact to goodwill
Impact to goodwill [Member]
Impact to goodwill [Member]
Quantifying Misstatement in Current Year Financial Statements [Line Items]
Quantifying Misstatement in Current Year Financial Statements [Line Items]
Increase in goodwill due to immaterial misstatement