Entity Central Index Key Document and entity information. Document And Entity Information [Abstract] Trading Symbol Trading Symbol Entity Registrant Name Entity Registrant Name 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 Common Stock, Shares Outstanding Entity Common Stock Shares Outstanding The total amount due to the entity within one year of the balance sheet date from outside sources, including trade accounts receivable and revenues recognized in excess of billings, as well as any other types of receivables, net of allowances established for the purpose of reducing such receivables to an amount that approximates their net realizable value. Aggregate carrying amount, as of the balance sheet date, of noncurrent assets not separately disclosed in the balance sheet. This balance also includes the sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. Noncurrent assets are expected to be realized or consumed after one year. Accrued liabilities and other liabilities current. Non-current accrued expenses and other liabilities. Statement Of Financial Position [Abstract] ASSETS Assets [Abstract] Current assets: Assets Current [Abstract] Cash Cash And Cash Equivalents At Carrying Value Accounts receivable and unbilled revenue, net of allowance of $2,686 and $2,574 at September 29, 2017 and December 30, 2016, respectively Accounts Receivable And Unbilled Revenue Net Prepaid expenses and other current assets Prepaid Expense And Other Assets Current Total current assets Assets Current Property and equipment, net Property Plant And Equipment Net Other assets Other Assets And Intangibles Goodwill, net Goodwill Total assets Assets LIABILITIES AND SHAREHOLDERS’ EQUITY Liabilities And Stockholders Equity [Abstract] Current liabilities: Liabilities Current [Abstract] Accounts payable Accounts Payable Current Accrued expenses and other liabilities Accrued Liabilities And Other Liabilities Current Total current liabilities Liabilities Current Non-current accrued expenses and other liabilities Accrued Expenses And Other Liabilities Non Current Long-term deferred tax liability, net Deferred Tax Liabilities Noncurrent Long-term debt Long Term Debt Total liabilities Liabilities Commitments and contingencies Commitments And Contingencies Shareholders’ equity: Equity [Abstract] Preferred stock, $.001 par value, 1,250,000 shares authorized; none issued and outstanding Preferred Stock Value Common stock, $.001 par value, 125,000,000 shares authorized; 55,600,776 and 54,785,193 shares issued at September 29, 2017 and December 30, 2016, respectively Common Stock Value Additional paid-in capital Additional Paid In Capital Common Stock Treasury stock, at cost, 26,945,776 and 26,197,981 shares September 29, 2017 and December 30, 2016, respectively Treasury Stock Value Accumulated deficit Retained Earnings Accumulated Deficit Accumulated comprehensive loss Accumulated Other Comprehensive Income Loss Net Of Tax Total shareholders' equity Stockholders Equity Total liabilities and shareholders' equity Liabilities And Stockholders Equity Accounts receivable and unbilled revenue, allowance Allowance For Doubtful Accounts Receivable Current Preferred stock, par value Preferred Stock Par Or Stated Value Per Share Preferred stock, shares authorized Preferred Stock Shares Authorized Preferred stock, shares issued Preferred Stock Shares Issued Preferred stock, shares outstanding Preferred Stock Shares Outstanding 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 Treasury stock, at cost, shares Treasury Stock Shares Income Statement [Abstract] Revenue: Revenues [Abstract] Revenue before reimbursements Sales Revenue Services Net Reimbursements Reimbursement Revenue Total revenue Revenues Costs and expenses: Costs And Expenses [Abstract] Cost of service: Cost Of Services [Abstract] Personnel costs before reimbursable expenses (includes $1,876 and $1,450 and $5,160 and $4,216 of stock compensation expense in the quarters and nine months ended September 29, 2017 and September 30, 2016, respectively) Cost Of Services Reimbursable expenses Cost Of Reimbursable Expense Total cost of service Cost Of Revenue Selling, general and administrative costs (includes $894 and $793 and $2,427 and $2,251 of stock compensation expense in the quarters and nine months ended September 29, 2017 and September 30, 2016, respectively) Selling General And Administrative Expense Restructuring costs Restructuring Costs Total costs and operating expenses Costs And Expenses Income from operations Operating Income Loss Other expense: Nonoperating Income Expense [Abstract] Interest expense Interest Expense Income from operations before income taxes Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest Income tax expense Income Tax Expense Benefit Net income Net Income Loss Basic net income per common share: Earnings Per Share Basic [Abstract] Income per common share from operations Earnings Per Share Basic Weighted average common shares outstanding Weighted Average Number Of Shares Outstanding Basic Diluted net income per common share: Earnings Per Share Diluted [Abstract] Income per common share from operations Earnings Per Share Diluted Weighted average common and common equivalent shares outstanding Weighted Average Number Of Diluted Shares Outstanding 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] Income Statement Location Income Statement Location [Axis] Income Statement Location Income Statement Location [Domain] Cost of Sales [Member] Cost Of Sales [Member] Selling General and Administrative [Member] Selling General And Administrative Expenses [Member] Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] Total share based compensation Share Based Compensation Statement Of Income And Comprehensive Income [Abstract] Net income Foreign currency translation adjustment Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent Total comprehensive income Comprehensive Income Net Of Tax The increase (decrease) during the reporting period in the amount due to the entity from outside sources, including trade accounts receivable, and revenues recognized in excess of billings, as well as any other types of receivables. 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 expense Depreciation Amortization expense Amortization Of Intangible Assets Amortization of debt issuance costs Amortization Of Financing Costs Non-cash stock compensation expense Provision (reversal) for doubtful accounts Provision For Doubtful Accounts Loss (gain) on foreign currency translation Foreign Currency Transaction Gain Loss Before Tax Release of valuation allowance Valuation Allowance Deferred Tax Asset Change In Amount Changes in assets and liabilities: Increase Decrease In Operating Capital [Abstract] Increase in accounts receivable and unbilled revenue Increase Decrease Accounts Receivable And Unbilled Revenue Increase in prepaid expenses and other assets Increase Decrease In Prepaid Deferred Expense And Other Assets Decrease in accounts payable Increase Decrease In Accounts Payable Decrease in accrued expenses and other liabilities Increase Decrease In Accrued Liabilities And Other Operating Liabilities (Decrease) increase in income tax payable Increase Decrease In Accrued Income Taxes Payable Net cash provided by operating activities Net Cash Provided By Used In Operating Activities Continuing Operations 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 Cash consideration paid for acquisitions Payments To Acquire Businesses Gross Cash acquired in acquisitions Cash Acquired From Acquisition Net cash used in investing activities Net Cash Provided By Used In Investing Activities Continuing Operations Cash flows from financing activities: Net Cash Provided By Used In Financing Activities [Abstract] Proceeds from ESPP Proceeds From Stock Plans Proceeds from borrowings Proceeds From Issuance Of Debt Repayment of borrowings Repayments Of Long Term Debt Debt issuance costs Payments Of Debt Issuance Costs Dividends paid Payments Of Dividends Exercise of stock options Proceeds From Stock Options Exercised Repurchase of common stock Payments For Repurchase Of Common Stock Net cash used in financing activities Net Cash Provided By Used In Financing Activities Continuing Operations Effect of exchange rate on cash Effect Of Exchange Rate On Cash And Cash Equivalents Continuing Operations Net decrease in cash and cash equivalents Cash And Cash Equivalents Period Increase Decrease Cash at beginning of period Cash at end of period Supplemental disclosure of cash flow information: Supplemental Cash Flow Information [Abstract] Cash paid for income taxes Income Taxes Paid Net Cash paid for interest Interest Paid Supplemental disclosure of non-cash acquisition financing activities: Cash Flow Noncash Investing And Financing Activities Disclosure [Abstract] Shares issued to sellers of Jibe Consulting Stock Issued1 Organization Consolidation And Presentation Of Financial Statements [Abstract] Basis of Presentation and General Information Organization Consolidation And Presentation Of Financial Statements Disclosure [Text Block] Earnings Per Share [Abstract] Net Income Per Common Share Earnings Per Share [Text Block] The total amount due to the entity within one year of the balance sheet date (or one operating cycle, if longer) from outside sources, including trade accounts receivable, and revenues recognized in excess of billings, as well as any other types of receivables, net of allowances established for the purpose of reducing such receivables to an amount that approximates their net realizable value. Accounts receivable and unbilled revenue, net. Accounts Receivable And Unbilled Revenue, Net [Abstract] Accounts Receivable and Unbilled Revenue, Net Accounts Receivable And Unbilled Revenue Net [Text Block] Accounts Payable And Accrued Liabilities Current And Noncurrent [Abstract] Accrued Expenses and Other Liabilities Accounts Payable And Accrued Liabilities Disclosure [Text Block] Restructuring And Related Activities [Abstract] Restructuring Costs Restructuring And Related Activities Disclosure [Text Block] Debt Disclosure [Abstract] Credit Facility Debt Disclosure [Text Block] Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] Stock Based Compensation Disclosure Of Compensation Related Costs Share Based Payments [Text Block] Stockholders Equity Note [Abstract] Shareholders' Equity Treasury Stock [Text Block] Related Party Transactions [Abstract] Transactions with Related Parties Related Party Transactions Disclosure [Text Block] Commitments And Contingencies Disclosure [Abstract] Litigation Legal Matters And Contingencies [Text Block] Geographic and service group information. Segment Reporting [Abstract] Geographic and Group Information Geographic And Service Group Information [Text Block] Business Combinations [Abstract] Acquisitions Business Combination Disclosure [Text Block] Basis of Presentation Basis Of Accounting Policy Policy [Text Block] Use of Estimates Use Of Estimates Fair Value Fair Value Of Financial Instruments Policy Business Combinations Business Combinations Policy Recently Issued Accounting Standards New Accounting Pronouncements Policy Policy [Text Block] Reclassifications Prior Period Reclassification Adjustment Description Basic And Diluted Weighted Average Shares Schedule Of Weighted Average Number Of Shares Table [Text Block] Accounts receivable and unbilled revenue net. Accounts Receivable and Unbilled Revenue, Net Accounts Receivable And Unbilled Revenue Net Table [Text Block] Components Of Accrued Expenses And Other Liabilities Schedule Of Accounts Payable And Accrued Liabilities Table [Text Block] Schedule of Activity in Restructuring Expense Accruals Schedule Of Restructuring And Related Costs [Text Block] Geographic Revenue Schedule Of Revenue From External Customers Attributed To Foreign Countries By Geographic Area [Text Block] Long-Lived Assets Attributable To Geographic Area Schedule Of Entity Wide Disclosure On Geographic Areas Long Lived Assets In Individual Foreign Countries By Country [Text Block] Gross revenue by service group. Revenue By Service Group Schedule Of Gross Revenue By Service Group Table [Text Block] Schedule Of Business Acquisitions By Acquisition [Table] Schedule Of Business Acquisitions By Acquisition [Table] Business Acquisition Business Acquisition [Axis] Business Acquisition, Acquiree Business Acquisition Acquiree [Domain] Jibe Consulting, Inc. Jibe Consulting, Inc [Member] Jibe Consulting Inc [Member] AECUS Limited. Aecus Limited [Member] Aecus Limited [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Purchase Price Allocation Schedule Of Business Acquisitions By Acquisition [Text Block] Acquired Intangible Assets Schedule Of Finite Lived Intangible Assets Acquired As Part Of Business Combination [Text Block] Effective tax rate Effective Income Tax Rate Continuing Operations The sum of dilutive potential unvested restricted stock units and common stock subject to vesting requirements used in the calculation of the diluted per-share or per-unit computation. The sum of dilutive potential stock options and stock appreciation rights used in the calculation of the diluted per-share or per-unit computation. Basic weighted average common shares outstanding Unvested restricted stock units and common stock subject to vesting requirements issued to employees and non-employees Dilutive Restricted Stock Units And Common Stock Subject To Vesting Requirements Common stock issuable upon the exercise of stock options and SARs Dilutive Stock Options And Stock Appreciation Rights Dilutive weighted average common shares outstanding Antidilutive common share equivalents Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount Amounts due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer) for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, net of uncollected advanced billings. Unbilled revenue. Accounts Receivable And Unbilled Revenue Net [Abstract] Accounts receivable Accounts Receivable Net Of Uncollected Pre Billings Unbilled revenue Unbilled Revenue Allowance for doubtful accounts Accounts receivable and unbilled revenue, net Accrued compensation and benefits. Accrued share based compensation. Accrued compensation and benefits Accrued Compensation And Benefits Accrued bonuses Accrued Bonuses Current Accrued dividend payable Dividends Payable Current Deferred revenue Deferred Revenue Current Accrued sales, use, franchise and VAT tax Sales And Excise Tax Payable Current And Noncurrent Non-cash stock compensation accrual Accrued Share Based Compensation Income tax payable Taxes Payable Current And Noncurrent Other accrued expenses Other Accrued Liabilities Current Total accrued expenses and other liabilities Restructuring costs Restructuring Charges Remaining restructuring commitments Restructuring Reserve Accrual balance at December 30, 2016 Payments Payments For Restructuring Accrual balance at September 29, 2017 Line Of Credit Facility [Table] Line Of Credit Facility [Table] Long-term Debt, Type Longterm Debt Type [Axis] Long-term Debt, Type Longterm Debt Type [Domain] Term loan. Term Loan [Member] Term Loan [Member] Credit Facility Credit Facility [Axis] Credit Facility Credit Facility [Domain] Revolving line of credit facility [Member] Revolving Credit Facility [Member] Variable Rate Variable Rate [Axis] Variable Rate Variable Rate [Domain] London Interbank Offered Rate (LIBOR) [Member] London Interbank Offered Rate L I B O R [Member]