Payables and Accruals [Abstract] Accrued Expenses and Other Current Liabilities Accounts Payable and Accrued Liabilities Disclosure [Text Block] Revenue from Contract with Customer [Abstract] Revenue Recognition Revenue from Contract with Customer [Text Block] Commitments and Contingencies Disclosure [Abstract] Legal Matters Legal Matters and Contingencies [Text Block] Accounting Policies [Abstract] Description of Business and Basis of Presentation Business Description and Accounting Policies [Text Block] Earnings Per Share [Abstract] Net Loss Per Share Earnings Per Share [Text Block] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Cumulative Effect, Period Of Adoption [Axis] Cumulative Effect, Period Of Adoption [Axis] Cumulative Effect, Period Of Adoption [Axis] Cumulative Effect, Period Of Adoption [Domain] Cumulative Effect, Period Of Adoption [Domain] [Domain] for Cumulative Effect, Period Of Adoption [Axis] Adjusted balance Cumulative Effect, Period Of Adoption, Adjusted Balance [Member] Cumulative Effect, Period Of Adoption, Adjusted Balance [Member] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Allowance for Doubtful Accounts Accounts Receivable, Allowance for Credit Loss [Roll Forward] Balance at beginning of year, as adjusted for the adoption of ASU 2016-13 (Topic 326) Accounts Receivable, Allowance for Credit Loss Accruals for credit loss charged to expense, net Accounts Receivable, Credit Loss Expense (Reversal) Balance at end of period Segment Reporting [Abstract] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] United States UNITED STATES Israel ISRAEL Australia AUSTRALIA Netherlands NETHERLANDS Other United Kingdom, Germany, Japan, France, Italy [Member] United Kingdom, Germany, Japan, France, Italy [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Total long-lived assets Long-Lived Assets Restructuring and Related Activities [Abstract] Schedule of Restructuring and Related Costs [Table] Schedule of Restructuring and Related Costs [Table] Restructuring Type [Axis] Restructuring Type [Axis] Type of Restructuring [Domain] Type of Restructuring [Domain] Severance and other associated costs Employee Severance [Member] Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Restructuring costs Restructuring Charges Income Statement [Abstract] Statement [Table] Statement [Table] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Cost of revenue Cost of Sales [Member] Sales and marketing Selling and Marketing Expense [Member] General and administrative General and Administrative Expense [Member] Product development Research and Development Expense [Member] Statement [Line Items] Statement [Line Items] Revenue Revenues Costs and expenses Costs and Expenses [Abstract] Cost of revenue Cost of Revenue Sales and marketing Selling and Marketing Expense General and administrative General and Administrative Expense Product development Research and Development Expense Amortization of purchased intangibles Amortization of Intangible Assets, Nonproduction Amortization of Intangible Assets, Nonproduction Total costs and expenses Costs and Expenses Loss from operations Operating Income (Loss) Other (expense) income, net Other Nonoperating Income (Expense) [Abstract] Interest expense, net Interest Income (Expense), Nonoperating, Net Other (expense) income, net Other Nonoperating Income (Expense) Total other (expense) income, net Nonoperating Income (Expense) Loss before provision for income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest (Benefit from) provision for income taxes Income Tax Expense (Benefit) Net loss Net Income (Loss) Attributable to Parent Net loss per share of common stock: Basic net loss per common share (in dollars per share) Earnings Per Share, Basic Diluted net loss per common share (in dollars per share) Earnings Per Share, Diluted Weighted-average shares used to compute net loss per share: Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Weighted average shares outstanding used in basic net loss per common share calculation (in shares) Weighted Average Number of Shares Outstanding, Basic Weighted average shares outstanding used in diluted net loss per common share calculation (in shares) Weighted Average Number of Shares Outstanding, Diluted Additional Information on Operating Expenses Operating Expenses [Abstract] Stock-based compensation expense Share-based Payment Arrangement, Expense Depreciation expense Depreciation, Nonproduction Amortization of purchased intangibles Cost, Amortization Fair Value Disclosures [Abstract] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Measurement Frequency [Axis] Measurement Frequency [Axis] Measurement Frequency [Domain] Measurement Frequency [Domain] Recurring Fair Value, Recurring [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Hierarchy and NAV [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] Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] Money market funds Money Market Funds [Member] Contingent earn-out Contingent Earn-Out [Member] Contingent Earn-Out [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] Assets: Assets, Fair Value Disclosure [Abstract] Money market funds Cash and Cash Equivalents, Fair Value Disclosure Total assets Assets, Fair Value Disclosure Liabilities: Liabilities, Fair Value Disclosure [Abstract] Contingent earn-out Business Combination, Contingent Consideration, Liability, Current Total liabilities Financial and Nonfinancial Liabilities, Fair Value Disclosure Business Combinations [Abstract] Acquisitions Business Combination Disclosure [Text Block] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Other Americas Other Americas [Member] Other Americas [Member] Total Americas Americas [Member] EMEA EMEA [Member] APAC POSIT - ASIA PACIFIC [Member] United Kingdom UNITED KINGDOM Netherlands Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Property, Plant and Equipment [Abstract] Summary of Property and Equipment Property, Plant and Equipment [Table Text Block] Billing Status, Type [Axis] Billing Status, Type [Axis] Receivables Billing Status [Domain] Receivables Billing Status [Domain] Billed receivable Billed Revenues [Member] Unbilled receivable Unbilled Revenues [Member] Contract Balances [Roll Forward] Contract Balances [Roll Forward] Contract Balances [Roll Forward] Accounts receivable, opening balance Accounts Receivable, after Allowance for Credit Loss, Current Accounts receivable, increase (decrease), net Accounts Receivable, Period Increase (Decrease), Net Accounts Receivable, Period Increase (Decrease), Net Accounts receivable, ending balance Contract acquisition costs noncurrent, opening balance Capitalized Contract Cost, Net, Noncurrent Contract acquisition costs noncurrent, increase (decrease), net Capitalized Contract Costs, Period Increase (Decrease), Net Capitalized Contract Costs, Period Increase (Decrease), Net Contract acquisition costs noncurrent, ending balance Deferred revenue (current), opening balance Contract with Customer, Liability, Current Deferred revenue (current), increase (decrease), net Contract With Customer Liability, Current, Period Increase (Decrease), Net Contract With Customer Liability, Current, Period Increase (Decrease), Net Deferred revenue (current), ending balance Deferred revenue (long-term), opening balance Contract with Customer, Liability, Noncurrent Deferred revenue (long-term), increase (decrease), net Contract With Customer Liability, Noncurrent, Period Increase (Decrease), Net Contract With Customer Liability, Noncurrent, Period Increase (Decrease), Net Deferred revenue (long-term), ending balance Restructuring expense Restructuring liability Restructuring Reserve Statement of Stockholders' Equity [Abstract] ASU 2016-13 Adjustment Cumulative Effect, Period Of Adoption, Adjustment [Member] Cumulative Effect, Period Of Adoption, Adjustment [Member] 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 [Member] Accumulated Other Comprehensive Loss AOCI Attributable to Parent [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning balance Stockholders' Equity Attributable to Parent Beginning balance (in shares) Common Stock, Shares, Issued Common stock issued upon exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Common stock issued upon exercise of stock options (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Common stock issued upon vesting of restricted stock units Stock Issued During Period, Value, New Issues Common stock issued upon vesting of restricted stock units (in shares) Stock Issued During Period, Shares, New Issues Common stock as earnout payment in connection with AdvantageTec Inc. Stock Issued During Period, Value, Earnout Payment Stock Issued During Period, Value, Earnout Payment Common stock as earnout payment in connection with AdvantageTec Inc. (in shares) Stock Issued During Period, Shares, Earnout Payment Stock Issued During Period, Shares, Earnout Payment Stock-based compensation APIC, Share-based Payment Arrangement, Increase for Cost Recognition Bonus cash payment settled in shares of the Company's common stock Stock Issued During Period, Value, Bonus Payment Settled In Shares Stock Issued During Period, Value, Bonus Payment Settled In Shares Bonus cash payment settled in shares of the Company's common stock (in shares) Stock Issued During Period, Shares, Bonus Payment Settled In Shares Stock Issued During Period, Shares, Bonus Payment Settled In Shares Common stock issued under Employee Stock Purchase Plan Stock Issued During Period, Value, Employee Stock Purchase Plan Common stock issued under Employee Stock Purchase Plan (in shares) Stock Issued During Period, Shares, Employee Stock Purchase Plans Common stock repurchase Stock Repurchased During Period, Value Common stock repurchase (in shares) Stock Repurchased During Period, Shares Equity component of convertible senior notes Debt Conversion Options Issued During Period Debt Conversion Options Issued During Period Equity component of convertible senior notes issuance costs Adjustments to Additional Paid in Capital, Debt Conversion Option, Issuance Costs Amount of decrease in additional paid in capital (APIC) resulting from direct costs associated with issuing debt conversion option. Includes, but is not limited to, legal and accounting fees and other direct costs of issuance. Purchase of capped call option Adjustments to Additional Paid in Capital, Capped Call Option, Issuance Costs Amount of decrease in additional paid in capital (APIC) resulting from direct costs associated with issuing capped call options. Includes, but is not limited to, legal and accounting fees and direct costs associated with issuance. Net loss Other comprehensive loss Other Comprehensive Income (Loss), Net of Tax Ending balance Ending balance (in shares) Other Commitments [Table] Other Commitments [Table] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Letter of Credit Letter of Credit [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] LOC for Office Space Letter Of Credit For Office Space [Member] Letter Of Credit For Office Space [Member] LOC for Security Deposit Letter Of Credit For Security Deposit [Member] Letter Of Credit For Security Deposit [Member] Defined Contribution Plan Match Groups [Axis] Defined Contribution Plan Match Groups [Axis] Defined Contribution Plan Match Groups [Axis] Defined Contribution Plan Match Groups [Domain] Defined Contribution Plan Match Groups [Domain] [Domain] for Defined Contribution Plan Match Groups [Axis] Match Step One Matching Tranche One [Member] Matching Tranche One [Member] Match Step Two Matching Tranche Two [Member] Matching Tranche Two [Member] Other Commitments [Line Items] Other Commitments [Line Items] Employer matching contribution, percent of match Defined Contribution Plan, Employer Matching Contribution, Percent of Match Employer matching contribution percent of eligible compensation Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay Employer matching contributions Defined Benefit Plan, Plan Assets, Contributions by Employer Letters of credit outstanding Line of Credit Facility, Maximum Borrowing Capacity Proceeds from amounts drawn against letters of credit Proceeds from Lines of Credit Estimated sales tax liability, including interest, minimum Estimated Sales Tax Liability, Including Interest, Minimum Estimated Sales Tax Liability, Including Interest, Minimum Estimated sales tax liability, including interest, maximum Estimated Sales Tax Liability, Including Interest, Maximum Estimated Sales Tax Liability, Including Interest, Maximum Accrued sales tax, including interest Accrued Sales Tax Liability, Including Interest Accrued Sales Tax Liability, Including Interest Schedule of Accrued Expenses and Other Current Liabilities Schedule of Accrued Liabilities [Table Text Block] Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Restructuring Reserve [Roll Forward] Restructuring Reserve [Roll Forward] Balance, Beginning of the year Severance and other associated costs Severance Costs Cash payments Payments for Restructuring Balance, End of period Rental expense for operating leases Operating Lease, Expense Undiscounted future lease payments Lessee, Operating Lease, Liability, Payment, Due [Abstract] 2020 (remaining six months for June 30, 2020) Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year 2021 Lessee, Operating Lease, Liability, Payments, Due Year Two 2022 Lessee, Operating Lease, Liability, Payments, Due Year Three 2023 Lessee, Operating Lease, Liability, Payments, Due Year Four 2024 Lessee, Operating Lease, Liability, Payments, Due Year Five Thereafter Lessee, Operating Lease, Liability, Payments, Due after Year Five Total undiscounted lease payments Lessee, Operating Lease, Liability, Payments, Due Less: present value adjustment Lessee, Operating Lease, Liability, Undiscounted Excess Amount Total operating lease liability Operating Lease, Liability Statement of Cash Flows [Abstract] OPERATING ACTIVITIES: Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net loss to net cash provided by (used in) operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Stock-based compensation expense Share-based Payment Arrangement, Noncash Expense Depreciation and amortization Depreciation Amortization of tenant allowance Tenant Allowance, Amortization, Lessee Amortization of lessee lease liability over time which offsets lease expense. Amortization of purchased intangibles Amortization of Intangible Assets Amortization of debt issuance costs Amortization of Debt Issuance Costs Accretion of debt discount on convertible senior notes Amortization of Debt Discount (Premium) Changes in fair value of contingent consideration Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability Provision for doubtful accounts Receivable, Credit Loss Expense (Reversal) Receivable, Credit Loss Expense (Reversal) Deferred income taxes Deferred Income Tax Expense (Benefit) Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Accounts receivable Increase (Decrease) in Accounts Receivable Prepaid expenses and other current assets Increase Decrease In Prepaid Expense And Other Current Assets Increase (Decrease) In Prepaid Expense And Other Current Assets Contract acquisition costs noncurrent Increase (Decrease) In Capitalized Contract Cost Increase (Decrease) In Capitalized Contract Costs Other assets Increase (Decrease) in Other Operating Assets Accounts payable Increase (Decrease) in Accounts Payable Accrued expenses and other current liabilities Increase (Decrease) in Accrued Liabilities Deferred revenue Increase (Decrease) in Deferred Revenue Operating lease liabilities Increase (Decrease) In Operating Lease Liability Increase (Decrease) In Operating Lease Liability Other liabilities Increase (Decrease) in Other Operating Liabilities Net cash provided by (used in) operating activities Net Cash Provided by (Used in) Operating Activities INVESTING ACTIVITIES: Net Cash Provided by (Used in) Investing Activities [Abstract] Purchases of property and equipment, including capitalized software Payments to Acquire Property, Plant, and Equipment Payments for intangible assets Payments to Acquire Intangible Assets 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] Repurchase of common stock Payments for Repurchase of Common Stock Proceeds from issuance of common stock in connection with the exercise of options and ESPP Proceeds, Issuance of Shares, Share-based Payment Arrangement, Including Option Exercised Proceeds from issuance of convertible senior notes Proceeds from Convertible Debt Payment of issuance costs in connection with convertible senior notes Payments of Debt Issuance Costs Payments related to contingent consideration Payment for Contingent Consideration Liability, Financing Activities Purchase of capped call option Payments for Derivative Instrument, Financing Activities Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities EFFECT OF FOREIGN EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents CHANGE IN CASH AND CASH EQUIVALENTS Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect CASH AND CASH EQUIVALENTS - Beginning of the period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents CASH AND CASH EQUIVALENTS - End of the period SUPPLEMENTAL DISCLOSURE OF OTHER CASH FLOW INFORMATION: Supplemental Cash Flow Information [Abstract] Cash paid for income taxes Income Taxes Paid, Net SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Purchase of property and equipment recorded in accounts payable Capital Expenditures Incurred but Not yet Paid Issuance of 11,508 shares of common stock as earnout payment in connection with AdvantageTec Inc. Other Significant Noncash Transaction, Value of Shares Issued As Earnout Payment Other Significant Noncash Transaction, Value of Shares Issued As Earnout Payment Issuance of 11,508 shares of common stock as earnout payment in connection with AdvantageTec Inc. (shares) Other Significant Noncash Transaction, Shares Issued As Earnout Payment Other Significant Noncash Transaction, Shares Issued As Earnout Payment Issuance of 991,905 shares of common stock to settle cash awards Other Significant Noncash Transaction, Value of Shares To Settle Bonus Cash Payment Other Significant Noncash Transaction, Value of Shares To Settle Bonus Cash Payment Issuance of 991,905 shares of common stock to settle cash awards (shares) Other Significant Noncash Transaction, Shares Issued To Settle Bonus Cash Payment Other Significant Noncash Transaction, Shares Issued To Settle Bonus Cash Payment Operating lease right of use asset Operating Lease Right Of Use Asset Supplemental Cash Flow Operating Lease Right Of Use Asset Supplemental Cash Flow Operating lease liabilities- short-term and long term Operating Lease Liability Supplemental Cash Flow Operating Lease Liability Supplemental Cash Flow Debt offering costs, accrued but not paid Debt Offering Costs Incurred But Not Yet Paid Debt Offering Costs Incurred But Not Yet Paid Segment Information Segment Reporting Disclosure [Text Block] Share-based Payment Arrangement [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] Award Type [Domain] Restricted Stock Units (RSUs) Restricted Stock Units (RSUs) [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Number of Shares (in thousands) Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward] Beginning balance outstanding (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number Awarded (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted Released (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Exercised Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Forfeitures Non-vested and outstanding at end of period (in shares) Expected to vest (in shares) Share-Based Compensation Arrangement By Share-Based Payment Award, Non-Option Equity Instruments, Expected To Vest Share-Based Compensation Arrangement By Share-Based Payment Award, Non-Option Equity Instruments, Expected To Vest Weighted Average Grant Date Fair Value (usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Weighted Average Grant Date Fair Value [Abstract] [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Weighted Average Grant Date Fair Value [Abstract] [Roll Forward] Beginning balance outstanding (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 Awarded (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 Released (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 (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 Non-vested and outstanding at end of period (in dollars per share) Expected to vest (in dollars per share) Share-Based Compensation Arrangement By Share-Based Payment Award, Non-Option Equity Instruments, Expected To Vest, Weighted Average Grant Date Fair Value Share-Based Compensation Arrangement By Share-Based Payment Award, Non-Option Equity Instruments, Expected To Vest, Weighted Average Grant Date Fair Value Aggregate Fair Value (in thousands) Share-Based Compensation Arrangement By Share-Based Payment Award, Non-Option Equity Instruments, Aggregate Intrinsic Value [Roll Forward] Share-Based Compensation Arrangement By Share-Based Payment Award, Non-Option Equity Instruments, Aggregate Intrinsic Value [Roll Forward] Aggregate fair value, Non-vested and outstanding Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Aggregate Intrinsic Value, Nonvested And Outstanding Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Aggregate Intrinsic Value, Nonvested And Outstanding Aggregate fair value, Expected to vest Share-Based Compensation Arrangement By Share-Based Payment Award, Non-Option Equity Instruments, Aggregate Intrinsic Value, Expected To Vest Share-Based Compensation Arrangement By Share-Based Payment Award, Non-Option Equity Instruments, Aggregate Intrinsic Value, Expected To Vest Amortization Amortization Payroll and other employee related costs Employee-related Liabilities, Current Professional services and consulting and other vendor fees Accrued Professional Fees, Current Unrecognized tax benefits Taxes Payable, Current Sales commissions Accrued Sales Commission, Current Restructuring Sales tax liabilities Accrual for Taxes Other than Income Taxes Other Other Accrued Liabilities, Current Total Accrued Liabilities, Current Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract] Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract] Common stock, authorized (in shares) Common Stock, Shares Authorized Common stock, issued (in shares) Common stock, outstanding (in shares) Common Stock, Shares, Outstanding Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock to be authorized pending charter amendment Common Stock, Shares Authorized Pending Charter Amendment Common Stock, Shares Authorized Pending Charter Amendment Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract] Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract] Preferred stock, authorized (in shares) Preferred Stock, Shares Authorized Preferred stock, issued (in shares) Preferred Stock, Shares Issued Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Statistical Measurement [Axis] Statistical Measurement [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] 1998 Plan Nineteen Ninety Eight Plan [Member] Nineteen Ninety Eight Plan [Member] 2000 Plan Two Thousand Plan [Member] Two Thousand Plan [Member] 1998 and 2000 Plan Nineteen Ninety Eight And Two Thousand Plan [Member] Nineteen Ninety Eight and Two Thousand Plan [Member] 2009 Plan Two Thousand Nine Plan [Member] Two Thousand Nine Plan [Member] 2009 Plan, Amended Two Thousand Nine Plan, Amended [Member] Two Thousand Nine Plan, Amended [Member] 2010 Employee Stock Purchase Plan Employee Stock Purchase Plan Twenty Ten [Member] Employee Stock Purchase Plan, 2010 [Member] Two Thousand Nineteen Employee Stock Purchase Plan [Member] Two Thousand Nineteen Employee Stock Purchase Plan [Member] Two Thousand Nineteen Employee Stock Purchase Plan [Member] 2018 Plan 2018 Plan [Member] 2018 Plan [Member] Award Type [Domain] Stock Option Share-based Payment Arrangement, Option [Member] Incentive Stock Option Incentive Stock Option [Member] Incentive Stock Option [Member] Stock repurchased during period (in shares) Per share weighed average fair value of stock options granted during the period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Dividend yield (percent) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Period used to determine volatility Share-based Compensation Arrangement By Share-based Payment Award, Fair Value Assumptions, Period Used To Determine Volatility Share-based Compensation Arrangement By Share-based Payment Award, Fair Value Assumptions, Period Used To Determine Volatility Expected life (in years) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Shares of common stock available for issuance (up to) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Increase in stock compensation cost due to change in forfeiture rate Share-based Payment Arrangement, Change In Forfeiture Rate, Incremental Cost Share-based Payment Arrangement, Change In Forfeiture Rate, Incremental Cost Options term (in years) Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period Increase in number of shares of common stock available for issuance Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized Shares reserved for future issuance Common Stock, Capital Shares Reserved for Future Issuance Fair value of stock options exercised Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Exercises in Period, Fair Value Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Exercises in Period, Fair Value Unrecognized compensation cost related to novested share-based compensation arrangements Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Unrecognized compensation cost related to nonvested share-based compensation arrangements Share-based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount Accrual for cash awards Share-Based Compensation, Accrual For Cash Awards Share-Based Compensation, Accrual For Cash Awards Weighted average recognition period of unrecognized compensation cost Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Component of stock-based compensation expense to be paid out in RSUs Share-Based Compensation, Component To Be Paid Out In RSU Amount of noncash expense for share-based payment arrangement related to component that will be paid out in Restricted Stock Units. Accrual for stock-based compensation arrangement to be paid out in RSUs Deferred Compensation Share-based Arrangements, Liability, Current Vesting period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] Hosted Services - Business Hosted Services - Business [Member] Hosted Services - Business [Member] Hosted Services - Consumer Hosted Services - Consumer [Member] Hosted Services - Consumer [Member] Professional Services Professional Services [Member] Professional Services [Member] Segments [Axis] Segments [Axis] Segment [Domain] Segments [Domain] Business Business [Member] Business [Member]. Consumer Consumer [Member] Consumer [Member] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Operating Segments Operating Segments [Member] Corporate Corporate, Non-Segment [Member] Revenue: Segment Reporting Information, Revenue for Reportable Segment [Abstract] Revenue Sales and marketing Unallocated corporate expenses Segment Reporting Unallocated Corporate Expenses Segment Reporting Unallocated Corporate Expenses Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Convertible Debt Convertible Debt [Member] Convertible Senior Notes Convertible Senior Notes [Member] Convertible Senior Notes [Member] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Anti-dilutive common stock awards not included in earnings per share calculation (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Convertible debt conversion price (in dollars per share) Debt Instrument, Convertible, Conversion Price Schedule of Financial Assets and Liabilities Measured at Fair Value Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Schedule of Changes in Fair Value of Level 3 Liabilities Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Stockholders' Equity Share-based Payment Arrangement [Text Block] Fair Value Measurements Fair Value Disclosures [Text Block] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Liability Class [Axis] Liability Class [Axis] Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] AdvantageTec AdvantageTec Inc [Member] AdvantageTec Inc [Member] Conversable, Inc. Conversable Inc [Member] Conversable Inc [Member] BotCentral Conversable [Member] Conversable [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Aggregate purchase price Business Combination, Consideration Transferred Cash payment in acquisition Payments to Acquire Businesses, Gross Equity consideration in acquisition Business Combination, Consideration Transferred, Equity Interests Issued and Issuable Potential earn-out consideration payments based on achieving targets Potential Earn-Out Contingent Consideration Payments, Target Based Potential Earn-Out Contingent Consideration Payments, Target Based Re-measurement to fair value increase (decrease) Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Fair Value Adjustments Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Fair Value Adjustments Contingent earn-out settled in stock Contingent Earn Out Settled In Stock Contingent Earn Out Settled In Stock Payments related to contingent consideration Goodwill acquired in acquisition Goodwill, Acquired During Period Intangible assets acquired Finite-lived Intangible Assets Acquired Business acquisition transaction costs Business Acquisition, Transaction Costs Assets acquired and liabilities assumed, net liability Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Income Tax Disclosure [Abstract] Income tax benefit recognized as result of CARES Act Income Tax Benefit, CARES Act Income Tax Benefit, CARES Act Statement of Financial Position [Abstract] ASSETS Assets [Abstract] CURRENT ASSETS: Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Accounts receivable, net of allowances of $7,346 and $4,226 as of June 30, 2020 and December 31, 2019, respectively Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Total current assets Assets, Current Operating lease right of use asset Operating Lease, Right-of-Use Asset Property and equipment, net Property, Plant and Equipment, Net Contract acquisition costs Intangibles, net Intangible Assets, Net (Excluding Goodwill) Goodwill Goodwill Deferred tax assets Deferred Income Tax Assets, Net Other assets Other Assets, Noncurrent Total assets Assets LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] CURRENT LIABILITIES: Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Accrued expenses and other current liabilities Deferred revenue Operating lease liability Operating Lease, Liability, Current Total current liabilities Liabilities, Current Deferred revenue, net of current portion Convertible senior notes, net Convertible Notes Payable, Noncurrent Other liabilities Other Liabilities, Noncurrent Operating lease liability, net of current portion Operating Lease, Liability, Noncurrent Deferred tax liability Deferred Income Tax Liabilities, Net Total liabilities Liabilities Commitments and contingencies (Note 11) Commitments and Contingencies STOCKHOLDERS’ EQUITY: Stockholders' Equity Attributable to Parent [Abstract] Preferred stock, $0.001 par value - 5,000,000 shares authorized, none issued Preferred Stock, Value, Issued Common stock, $0.001 par value - 200,000,000 shares authorized, 68,731,477 and 66,543,073 shares issued, 66,021,647 and 63,833,243 shares outstanding as of June 30, 2020 and December 31, 2019, respectively Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital Treasury stock Treasury Stock, Value Accumulated deficit Retained Earnings (Accumulated Deficit) Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Total stockholders’ equity Total liabilities and stockholders’ equity Liabilities and Equity Schedule of Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Property Plant And Equipment By Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Computer equipment and software Computer Equipment And Software [Member] Computer Equipment And Software [Member] Furniture, equipment and building improvements Furniture Equipment And Building Improvements [Member] Furniture, Equipment and Building Improvements [Member] Internal-use software development costs Software Development [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Property and equipment, gross Property, Plant and Equipment, Gross Less: accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Total Change in Fair Value of Level 3 Liabilities Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Beginning balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value Fair value adjustment Payments Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements Ending balance Contract acquisition costs Capitalized Contract Cost, Net Remaining performance obligation Revenue, Remaining Performance Obligation, Amount Recognition of deferred revenue Contract with Customer, Liability, Revenue Recognized Accounts for doubtful accounts Sales reserve Sales Reserve Sales Reserve Statement of Comprehensive Income [Abstract] Foreign currency translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Comprehensive loss Comprehensive Income (Loss), Net of Tax, Attributable to Parent Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Principles of Consolidation Consolidation, Policy [Policy Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Recently Issued Accounting Standards and Recently Adopted Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Revenue Recognition Revenue from Contract with Customer [Policy Text Block] Net Loss Per Share Earnings Per Share, Policy [Policy Text Block] Segment Information Segment Reporting, Policy [Policy Text Block] Stock-Based Compensation Share-based Payment Arrangement [Policy Text Block] Debt Disclosure [Abstract] Convertible Senior Notes and Capped Call Transactions Debt Disclosure [Text Block] Schedule of Goodwill Schedule of Goodwill [Table Text Block] Summary of Intangible Assets Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block] Schedule of Finite-Lived Intangible Assets, Future Amortization Expense Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Weighted Average Assumptions of Fair Value Options Using Black-Scholes Option-Pricing Model Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Summary of Stock Option Activity and Weighted Average Exercise Prices Share-based Payment Arrangement, Option, Activity [Table Text Block] Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity Share-based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block] Reconciliation of Shares Used in Calculating Basic and Diluted Earnings Per Share Schedule of Weighted Average Number of Shares [Table Text Block] Conversable, Inc. and AdvntageTec Conversable Inc And AdvntageTec Inc [Member] Conversable Inc And AdvntageTec Inc [Member] Convertible senior note Senior Debt Obligations [Member] Convertible senior note net Convertible Debt, Fair Value Disclosures Contingent earn-out increase (decrease) Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Period Increase (Decrease) Equity issued as payment for contingent consideration Payment For Contingent Consideration, Value, Equity Shares Issued Payment For Contingent Consideration, Value, Equity Shares Issued Payment related to contingent consideration Property and Equipment Property, Plant and Equipment Disclosure [Text Block] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Debt Instrument [Line Items] Debt Instrument [Line Items] Carrying Amount of Liability Component: Long-term Debt, Unclassified [Abstract] Principal Long-term Debt, Gross Unamortized discount Debt Instrument, Unamortized Discount Unamortized issuance costs Debt Issuance Costs, Net Net carrying amount Long-term Debt Carrying Amount of Equity Component: Convertible Debt Equity Component [Abstract] Convertible Debt Equity Component [Abstract] Proceeds allocated to the conversion options (debt discount) Debt Instrument, Convertible, Carrying Amount of Equity Component Issuance costs Deferred Finance Costs, Allocated To Equity Component Deferred Finance Costs, Allocated To Equity Component Net carrying amount Debt Instrument, Convertible, Carrying Amount Of Equity Component, Net Of Issuance Costs Debt Instrument, Convertible, Carrying Amount Of Equity Component, Net Of Issuance Costs Interest Expense: Interest Expense, Debt [Abstract] Contractual interest expense Interest Expense, Debt, Excluding Amortization Amortization of issuance costs Amortization of debt discount Total interest expense Interest Expense, Debt Summary of Financial Information by Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Long-Lived Assets by Geographic Region Long-lived Assets by Geographic Areas [Table Text Block] Schedule of Goodwill [Table] Schedule of Goodwill [Table] Goodwill [Line Items] Goodwill [Line Items] Goodwill [Roll Forward] Goodwill [Roll Forward] Goodwill, beginning balance Foreign exchange adjustment Goodwill, Foreign Currency Translation Gain (Loss) Goodwill, ending balance Basic (in shares) Effect of assumed exercised options (in shares) Weighted Average Number Diluted Shares Outstanding Adjustment Diluted (in shares) Other expense, ent Other Expense [Member] Capped Calls Capped Calls [Member] Capped Calls [Member] Aggregate principal Debt Instrument, Face Amount Debt instrument stated rate (percent) Debt Instrument, Interest Rate, Stated Percentage Aggregate principal from exercise in full of over-allotment options Aggregate Principal From Exercise In Full Of Over-Allotment Options Aggregate Principal From Exercise In Full Of Over-Allotment Options Proceeds from debt offering, net of debt issuance costs Proceeds from Debt, Net of Issuance Costs Debt instrument, unit of principal for conversion Debt Instrument, Unit Of Principal For Conversion, Amount Debt Instrument, Unit Of Principal For Conversion, Amount Number of shares per convertible note Debt Instrument, Convertible, Number of Equity Instruments Per 1000 Principal Debt Instrument, Convertible, Number of Equity Instruments Per 1000 Principal Percentage of principal amount paid if repurchase due to fundamental change (percent) Debt Instrument, Redemption Price, Percentage Threshold trading days in consideration of note conversion Debt Instrument, Convertible, Threshold Trading Days Threshold consecutive trading days in analysis of conversion price Debt Instrument, Convertible, Threshold Consecutive Trading Days Threshold percentage of stock price if converted Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger Threshold for five day period, product of sale price of common stock and conversion rate of notes Debt Instrument, Convertible, Five Day Period, Threshold Of Product Of Sale Price Of Stock And Conversion Rate Debt Instrument, Convertible, Five Day Period, Threshold Of Product Of Sale Price Of Stock And Conversion Rate Carry amount of equity component of convertible notes Total deferred issuance costs Deferred Finance Costs, Liability And Equity Component Deferred Finance Costs, Liability And Equity Component Debt issuance costs attributable to liability Debt Issuance Costs, Gross Remaining amortization period for debt discount and debt issuance costs Debt Instrument, Convertible, Remaining Discount Amortization Period Effective interest rate (percent) Debt Instrument, Interest Rate During Period Interest expense Capped caps initial strike price (in dollars per share) Capped Calls, Initial Option Strike Price Capped Calls, Initial Option Strike Price Capped caps initial cap price (in dollars per share) Capped Calls, Initial Cap Price Capped Calls, Initial Cap Price Number of shares of common stock covered by called caps (shares) Number Of Shares Of Common Stock Covered By Capped Calls Number Of Shares Of Common Stock Covered By Capped Calls Reduction to additional paid-in-capital related to called caps Adjustments to additional paid in capital related to issuance costs attributable to equity component Restructuring Restructuring and Related Activities Disclosure [Text Block] Accounts receivable, allowance Allowance For Doubtful Accounts And Sales Reserve Allowance For Doubtful Accounts And Sales Reserve Subsequent Events [Abstract] Subsequent Events Subsequent Events [Text Block] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Schedule of Carrying Amount of Convertible Debt and Related Interest Convertible Debt [Table Text Block] Operating lease right-of-use asset Current operating lease liability Long term operating lease liability Total operating lease liability Operating leases, weighted average remaining lease term (in years) Operating Lease, Weighted Average Remaining Lease Term Operating leases, weighted average discount rate (percent) Operating Lease, Weighted Average Discount Rate, Percent Schedule of Lease Information Lease, Cost [Table Text Block] Schedule of Undiscounted Future Lease Payments Lessee, Operating Lease, Liability, Maturity [Table Text Block] Option-Pricing Model Weighted Average Assumptions Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract] Risk-free interest rate, minimum (percent) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum Risk-free interest rate, maximum (percent) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum Historical volatility, minimum (percent) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum Historical volatility, maximum (percent) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum Cover [Abstract] Document Type Document Type Document Quarterly Report Document Quarterly Report Document Period End Date Document Period End Date Document Transition Report Document Transition Report Entity File Number Entity File Number Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Tax Identification Number Entity Address, Address Line One Entity Address, Address Line One Entity Address, City or Town Entity Address, City or Town Entity Address, State or Province Entity Address, State or Province Entity Address, Postal Zip Code Entity Address, Postal Zip Code City Area Code City Area Code Local Phone Number Local Phone Number Entity Current Reporting Status Entity Current Reporting Status Entity Interactive Data Current Entity Interactive Data Current Entity Filer Category Entity Filer Category Entity Small Business Entity Small Business Entity Emerging Growth Company Entity Emerging Growth Company Entity Shell Company Entity Shell Company Title of 12(b) Security Title of 12(b) Security Trading Symbol Trading Symbol Security Exchange Name Security Exchange Name Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Estimated Amortization Expense Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] Remaining 2020 Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year 2021 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2022 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2023 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2024 Finite-Lived Intangible Assets, Amortization Expense, Year Five Thereafter Finite-Lived Intangible Assets, Amortization Expense, after Year Five Total Finite-Lived Intangible Assets, Net Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table] Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table] Finite Lived Intangible Assets By Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Technology Technology [Member] Technology [Member] Customer relationships Customer Contracts [Member] Patents Patents [Member] Other Other Intangible Assets [Member] Acquired Finite-Lived Intangible Assets [Line Items] Acquired Finite-Lived Intangible Assets [Line Items] Gross Carrying Amount Finite-Lived Intangible Assets, Gross Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Net Carrying Amount Weighted Average Amortization Period Acquired Finite-lived Intangible Assets, Weighted Average Useful Life Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Operating leases term (in years) Lessee, Operating Lease, Term of Contract Operating lease liabilities Cash payments for operating leases Operating Lease, Payments Loss on termination of lease Gain (Loss) on Termination of Lease Schedule of Restructuring and Related Costs Restructuring and Related Costs [Table Text Block] Number of operating segments Number of Operating Segments Total deferred revenue - short term Total deferred revenue - long term Schedule of Deferred Revenues and Contract Balances Contract with Customer, Asset and Liability [Table Text Block] Schedule of Revenue by Geographic Region Revenue from External Customers by Geographic Areas [Table Text Block] Schedule of Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Schedule of Accounts Receivable, Allowance for Doubtful Accounts Accounts Receivable, Allowance for Credit Loss [Table Text Block] Options Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Beginning balance (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) Cancelled or expired (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Ending balance (in shares) Options vested and expected to vest (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Options exercisable at end of period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Beginning balance (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 Cancelled or expired (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Ending balance (in dollars per share) Options vested and expected to vest (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Options exercisable at end of period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Weighted Average Remaining Contractual Term (in years) Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] Weighted average remaining contract term, Options outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Weighted average remaining contract term, Options vested and expected to vest Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term Weighted average remaining contract term, Options exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Aggregate Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract] Aggregate intrinsic value, Options outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Aggregate intrinsic value, Options vested and expected to vest Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value Aggregate intrinsic value, Options exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Income Taxes Income Tax Disclosure [Text Block]