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] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Hedvig, Inc. Hedvig, Inc. [Member] Hedvig, Inc. [Member] Award Type [Axis] Award Type [Axis] Award Type [Domain] Award Type [Domain] Restricted stock units 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] Weighted-average fair value, units 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 Equity interests issuable (in shares) Business Acquisition, Equity Interest Issued or Issuable, Number of Shares Stock based compensation expense Share-based Payment Arrangement, Expense Expected to recognized weighted average period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms Business Combinations [Abstract] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Business Acquisition [Line Items] Business Acquisition [Line Items] Cash paid at closing Payments to Acquire Businesses, Gross Fair value of restricted stock units included in purchase price Business Combination, Consideration Transferred, Equity Interests Issued and Issuable Fair value of contingent consideration Business Combination, Contingent Consideration, Liability Total purchase price Business Combination, Consideration Transferred Cash Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents Trade accounts receivable Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables Other current assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other Property and equipment Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Intangible assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles Other assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets Accounts payable and accrued liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable Deferred revenue Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Contract With Customer, Liability Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Contract With Customer, Liability Operating lease liability, net of operating lease assets Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Operating Lease, Liability, Net Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Operating Lease, Liability, Net Deferred tax liability Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Total identifiable net assets acquired and liabilities assumed Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Goodwill Goodwill Total purchase price Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net Statement of Comprehensive Income [Abstract] Net income (loss) Net Income (Loss) Attributable to Parent Other comprehensive loss: Other Comprehensive Income (Loss), Net of Tax [Abstract] Foreign currency translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Attributable to Parent Subsequent Events [Abstract] Subsequent Events Subsequent Events [Text Block] Accounting Policies [Abstract] 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] Developed technology Developed Technology Rights [Member] Customer relationships Customer Relationships [Member] Acquired Finite-Lived Intangible Assets [Line Items] Acquired Finite-Lived Intangible Assets [Line Items] Intangible assets economic lives Finite-Lived Intangible Asset, Useful Life Goodwill and Intangible Assets Disclosure [Abstract] Purchased Intangible Assets, Net of Amortization Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block] Schedule of Finite-Lived Intangible Assets Future Amortization Expense Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Statement of Financial Position [Abstract] Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized (in shares) Common Stock, Shares Authorized Common stock, shares issued (in shares) Common Stock, Shares, Issued Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Leases [Abstract] Remainder of FY 2020 Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year FY 2021 Lessee, Operating Lease, Liability, Payments, Due Year Two FY 2022 Lessee, Operating Lease, Liability, Payments, Due Year Three FY 2023 Lessee, Operating Lease, Liability, Payments, Due Year Four FY 2024 Lessee, Operating Lease, Liability, Payments, Due Year Five Thereafter Lessee, Operating Lease, Liability, Payments, Due after Year Five Total Minimum Lease Payments Lessee, Operating Lease, Liability, Payments, Due Less: Imputed Interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Present value of operating lease liabilities Operating Lease, Liability Less: Current Portion of operating lease liabilities Operating Lease, Liability, Current Long-term operating lease liabilities Operating Lease, Liability, Noncurrent Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Stock Plans Share-based Payment Arrangement [Text Block] Schedule of Error Corrections and Prior Period Adjustment Restatement [Table] Schedule of Error Corrections and Prior Period Adjustment Restatement [Table] Adjustments for Error Corrections [Axis] Adjustments for Error Corrections [Axis] Adjustments for Error Correction [Domain] Adjustments for Error Correction [Domain] Immaterial error related to classification of legal fees related to intellectual property Immaterial Error Related to Classification of Legal Fees Related To Intellectual Property [Member] Immaterial Error Related to Classification of Legal Fees Related To Intellectual Property [Member] Error Corrections and Prior Period Adjustments Restatement [Line Items] Error Corrections and Prior Period Adjustments Restatement [Line Items] Research and development Research and Development Expense General and administrative General and Administrative Expense Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] 2020 (remaining) Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year 2021 Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months 2022 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2023 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2023 Finite-Lived Intangible Assets, Amortization Expense, Year Four Thereafter Finite-Lived Intangible Assets, Amortization Expense, after Year Five Net Assets Finite-Lived Intangible Assets, Net Business Combination Business Combination Disclosure [Text Block] Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Restructuring and Related Activities [Abstract] Restructuring and Related Costs Restructuring and Related Costs [Table Text Block] Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common Stock Common 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] Statement [Line Items] Statement [Line Items] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning balance (in shares) Shares, Outstanding Beginning balance Stockholders' Equity Attributable to Parent Stock-based compensation APIC, Share-based Payment Arrangement, Increase for Cost Recognition Share issuances related to business combinations Stock Issued During Period, Value, Acquisitions Share issuances related to stock-based compensation (in shares) Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture Share issuances related to stock-based compensation Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture Repurchase of common stock (in shares) Stock Repurchased During Period, Shares Repurchase of common stock Stock Repurchased During Period, Value Net income (loss) Other comprehensive income (loss) Ending balance (in shares) Ending balance 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 & payroll related charges Employee Severance [Member] Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Restructuring Reserve [Roll Forward] Restructuring Reserve [Roll Forward] Balance at beginning of period Restructuring Reserve Restructuring charges Restructuring Charges Payments Payments for Restructuring Accrual reversals Restructuring Reserve, Accrual Adjustment Balance at end of period Lease impairment loss, excluded from restructuring charges Operating Lease, Impairment Loss Goodwill and Intangible Assets, Net Goodwill and Intangible Assets Disclosure [Text Block] Revenue from Contract with Customer [Abstract] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] Software and Products Revenue Software [Member] Software [Member] Customer Support Revenue Customer Support [Member] Customer Support [Member] Professional Services Professional Services [Member] Professional Services [Member] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] Americas Americas [Member] EMEA EMEA [Member] APAC Asia Pacific [Member] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Total Revenue Revenue from Contract with Customer, Excluding Assessed Tax Earnings Per Share [Abstract] Net Income per Common Share Earnings Per Share [Text Block] Financial Assets Measured at Fair Value Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Table Text Block] Equity [Abstract] Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Share Repurchase Program [Axis] Share Repurchase Program [Axis] Share Repurchase Program [Domain] Share Repurchase Program [Domain] Common stock repurchase program Common Stock Repurchase Program [Member] Common Stock Repurchase Program [Member] Class of Stock [Line Items] Class of Stock [Line Items] Remaining amount available under share repurchase program Stock Repurchase Program, Remaining Authorized Repurchase Amount Schedule of Goodwill [Table] Schedule of Goodwill [Table] Goodwill [Line Items] Goodwill [Line Items] Goodwill expected tax deductible amount Business Acquisition, Goodwill, Expected Tax Deductible Amount Purchase consideration Cash paid Contingent consideration purchase Business Combination, Consideration Transferred, Liabilities Incurred Compensation arrangements, vesting period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Cash payments to shareholders following the date of acquisition Business Combination, Consideration Transferred, After Acquisition Date Business Combination, Consideration Transferred, After Acquisition Date Cash payments to shareholders following the date of acquisition, period Business Combination, Consideration Transferred, After Acquisition Date, Period Business Combination, Consideration Transferred, After Acquisition Date, Period Contingent consideration arrangements range of outcomes value low Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, Low Contingent consideration arrangements range of outcomes value high Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High Acquisition related costs Business Combination, Acquisition Related Costs Summary of the Purchase Price and Preliminary Purchase Price Allocation as of the Date of Acquisition Schedule of Business Acquisitions, by Acquisition [Table Text Block] Revenue and Net Loss of the Combined Entity Business Acquisition, Pro Forma Information [Table Text Block] Income Statement [Abstract] Software and products Software And Products [Member] Software And Products [Member] Services Service [Member] Revenues: Total revenues Cost of revenues: Cost of Goods and Services Sold [Abstract] Total cost of revenues Cost of Goods and Services Sold Gross margin Gross Profit Operating expenses: Operating Expenses [Abstract] Sales and marketing Selling and Marketing Expense Restructuring Restructuring and Related Cost, Incurred Cost Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Total operating expenses Operating Expenses Income (loss) from operations Operating Income (Loss) Interest income Investment Income, Interest Income (loss) before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income tax expense (benefit) Income Tax Expense (Benefit) Net income (loss) Net income (loss) per common share: Basic (in dollars per share) Earnings Per Share, Basic Diluted (in dollars per share) Earnings Per Share, Diluted Weighted average common shares outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Income Tax Disclosure [Abstract] Income tax expense (benefit) Deferred tax assets Deferred Tax Assets, Net of Valuation Allowance Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Software, licenses Software, Licenses [Member] Software, Licenses [Member] Software, appliances Software, Appliances [Member] Software, Appliances [Member] Professional Services, other Professional Services, Other [Member] Professional Services, Other [Member] Professional Services, education services Professional Services, Education Services [Member] Professional Services, Education Services [Member] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Performance obligation, expected payment terms Revenue, Performance Obligation, Description Of Payment Terms, Period Revenue, Performance Obligation, Description Of Payment Terms, Period Income Taxes Income Tax Disclosure [Text Block] Operating Lease Cost Operating Lease, Cost Short-term Lease Cost Short-term Lease, Cost Variable Lease Cost Variable Lease, Cost Net Lease Cost Lease, Cost Sources of primary revenue Sources Of Primary Revenue The number of sources of revenue in a typical sales agreement. Customer support agreement term Customer Support Agreement The typical length of Customer Support Agreements. Number of operating segments Number of Operating Segments Revenue recognized in period, included in opening deferred revenue balance Contract with Customer, Liability, Revenue Recognized Revenue expected to be recognized from remaining performance obligations Revenue, Remaining Performance Obligation, Amount Schedule of Stock-Based Compensation Expense Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Schedule of Stock Option Activity Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block] Schedule of Restricted Stock Unit Activity Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] Revenue Revenue from Contract with Customer [Text Block] ASSETS Assets [Abstract] Current assets: Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Restricted cash Restricted Cash, Current Short-term investments Debt Securities, Held-to-maturity, Current Trade accounts receivable Receivables, Net, Current Other current assets Other Assets, Current Total current assets Assets, Current Property and equipment, net Property, Plant and Equipment, Net Operating lease assets Operating Lease, Right-of-Use Asset Deferred commissions cost Capitalized Contract Cost, Net, Noncurrent Intangible assets, net Intangible Assets, Net (Excluding Goodwill) 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 liabilities Accrued Liabilities, Current Current portion of operating lease liabilities Deferred revenue Contract with Customer, Liability, Current Total current liabilities Liabilities, Current Deferred revenue, less current portion Contract with Customer, Liability, Noncurrent Deferred tax liabilities, net Deferred Income Tax Liabilities, Net Long-term operating lease liabilities Other liabilities Other Liabilities, Noncurrent Commitments and contingencies Commitments and Contingencies Stockholders’ equity: Stockholders' Equity Attributable to Parent [Abstract] Preferred stock, $0.01 par value: 50,000 shares authorized, no shares issued and outstanding Preferred Stock, Value, Issued Common stock, $0.01 par value: 250,000 shares authorized, 46,497 shares and 45,582 shares issued and outstanding at December 31, 2019 and March 31, 2019, respectively Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital, Common Stock 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 Number of Options Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Outstanding (in shares) as of March 31, 2019 Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Options granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures Options exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Options forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Options expired (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period Outstanding (in shares) as of December 31, 2019 Exercisable (in shares) as of December 31, 2019 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] Outstanding (in dollars per share) as of March 31, 2019 Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Options granted (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Options exercised (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Options forfeited (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Options expired (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price Outstanding (in dollars per share) as of December 31, 2019 Exercisable (in dollars per share) as of December 31, 2019 Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Weighted- Average Remaining Contractual Term (Years) Share Based Compensation Arrangement By Share Based Payment Award Other Than Options Weighted Average Remaining Contractual Term [Abstract] Share based Compensation Arrangement by Share based Payment Award, Other than Options, Weighted Average Remaining Contractual Term [Abstract] Outstanding as of December 31, 2019 Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Exercisable as of December 31, 2019 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 Aggregate Intrinsic Value [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Aggregate Intrinsic Value [Abstract] Outstanding as of December 31, 2019 Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Exercisable as of December 31, 2019 Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Accounts Receivable Accounts Receivable [Roll Forward] Accounts Receivable [Roll Forward] Opening Balance as of March 31, 2019 Accounts Receivable, after Allowance for Credit Loss Increase/(decrease), net Increase (Decrease) in Accounts Receivable Ending Balance as of December 31, 2019 Unbilled Receivable (current) Contract With Customer, Asset, Net, Current [Roll Forward] Contract With Customer, Asset, Net, Current [Roll Forward] Opening Balance as of March 31, 2019 Unbilled Receivables, Current Increase/(decrease), net Increase (Decrease) In Unbilled Receivables, Current Increase (Decrease) in Unbilled Receivables, Current Ending Balance as of December 31, 2019 Unbilled Receivable (long-term) Contract With Customer, Asset, Net, Noncurrent [Roll Forward] Contract With Customer, Asset, Net, Noncurrent [Roll Forward] Opening Balance as of March 31, 2019 Unbilled Receivables, Noncurrent Unbilled Receivables, Noncurrent Increase/(decrease), net Increase (Decrease) In Unbilled Receivables, Noncurrent Increase (Decrease) In Unbilled Receivables, Noncurrent Ending Balance as of December 31, 2019 Deferred Revenue (current) Contract With Customer, Liability, Current [Roll Forward] Contract with Customer, Liability, Current [Roll Forward] Opening Balance as of March 31, 2019 Increase/(decrease), net Contract With Customer, Liability, Current, Increase (Decrease) Contract With Customer, Liability, Current, Increase (Decrease) Ending Balance as of December 31, 2019 Deferred Revenue (long-term) Contract With Customer, Liability, Noncurrent [Roll Forward] Contract With Customer, Liability, Noncurrent [Roll Forward] Opening Balance as of March 31, 2019 Increase/(decrease), net Contract With Customer, Liability, Noncurrent, Increase (Decrease) Contract With Customer, Liability, Noncurrent, Increase (Decrease) Ending Balance as of December 31, 2019 Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block] Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Contract with Customer, Asset and Liability Contract with Customer, Asset and Liability [Table Text Block] Capitalization Capitalization [Text Block] Entities disclosure for capitalization. Antidilutive securities excluded from computation (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Concentration Risk [Table] Concentration Risk [Table] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Customer Concentration Risk Customer Concentration Risk [Member] Customer [Axis] Customer [Axis] Customer [Domain] Customer [Domain] Arrow Arrow [Member] Arrow [Member] Hitachi Vantara Hitachi Vantara [Member] Hitachi Vantara [Member] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Revenue Revenue Benchmark [Member] Accounts receivable Accounts Receivable [Member] Concentration Risk [Line Items] Concentration Risk [Line Items] Concentration risk percentage Concentration Risk, Percentage Cover page. 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 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 Title of 12(b) Security Title of 12(b) Security Trading Symbol Trading Symbol Security Exchange Name Security Exchange Name 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 Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding 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 Restructuring Restructuring and Related Activities Disclosure [Text Block] Actual from 10/01/19 - 12/31/19, Revenue Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual Actual from 10/01/19 - 12/31/19, Net Loss Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual Supplemental pro forma, Revenue Business Acquisition, Pro Forma Revenue Supplemental pro forma, Net Loss Business Acquisition, Pro Forma Net Income (Loss) PSU Performance Restricted Stock Units [Member] Performance Restricted Stock Units [Member] Market performance shares Performance Shares [Member] Awarded (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Service period Maximum potential to vest (as a percentage) Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Maximum Potential To Vest Share-based Compensation Arrangement By Share-based Payment Award, Equity Instruments Other Than Options, Maximum Potential To Vest Maximum potential to vest (in shares) Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other than Options, Maximum Number Of Shares To Vest Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other than Options, Maximum Number Of Shares To Vest Number of annual tranches Share-Based Compensation Arrangement By Share-Based Payment Award, Number Of Annual Tranches Share-Based Compensation Arrangement By Share-Based Payment Award, Number Of Annual Tranches Statement of Cash Flows [Abstract] Cash flows from operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Net Income (loss) Adjustments to reconcile net income (loss) 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 Noncash stock-based compensation Share-based Payment Arrangement, Noncash Expense Deferred income taxes Deferred Income Tax Expense (Benefit) Amortization of deferred commissions cost Amortization of Deferred Sales Commissions Impairment of operating lease assets Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Trade accounts receivable Increase (Decrease) in Receivables Operating lease assets and liabilities, net Increase (Decrease) In Operating Lease, Right-Of-Use Asset And Liability, Net Increase (Decrease) In Operating Lease, Right-Of-Use Asset And Liability, Net Other current assets and Other assets Increase (Decrease) in Other Operating Assets Deferred commissions cost Increase (Decrease) In Deferred Sales Commissions Increase (Decrease) in Deferred Sales Commissions Accounts payable Increase (Decrease) in Accounts Payable Accrued liabilities Increase (Decrease) in Accrued Liabilities Deferred revenue Increase (Decrease) in Contract with Customer, Liability Other liabilities Increase (Decrease) in Other Operating 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] Purchase of short-term investments Payments to Acquire Short-term Investments Proceeds from maturity of short-term investments Proceeds from Sale of Short-term Investments Purchase of property and equipment Payments to Acquire Property, Plant, and Equipment Business combination, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Cash flows from financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Repurchase of common stock Payments for Repurchase of Common Stock Proceeds from stock-based compensation plans Proceeds, Issuance of Shares, Share-based Payment Arrangement, Including Option Exercised Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Effects of exchange rate — changes in cash Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Net decrease in cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash, cash equivalents and restricted cash at beginning of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash, cash equivalents and restricted cash at end of period Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Recently Issued Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Concentration of Credit Risk Concentration Risk, Credit Risk, Policy [Policy Text Block] Fair Value of Financial Instruments Fair Value of Financial Instruments, Policy [Policy Text Block] Revenue Revenue from Contract with Customer [Policy Text Block] Leases Lessee, Leases [Policy Text Block] Goodwill and Intangible Assets Goodwill and Intangible Assets, Policy [Policy Text Block] Number of Awards Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Non-vested (in shares) as of March 31, 2019 Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Non-vested (in shares) as of December 31, 2019 Weighted- Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Non-vested (in dollars per share) as of March 31, 2019 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) Vested (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Forfeited (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 (in dollars per share) as of December 31, 2019 Stock-Based Compensation Stock-Based Compensation [Member] Stock-Based Compensation [Member] Restructuring charges incurred Operating lease impairment loss, number of leases Operating Lease, Impairment Loss, Number Of Leases Operating Lease, Impairment Loss, Number Of Leases Net Lease Cost Recognized on Condensed Consolidated Statement of Operations Lease, Cost [Table Text Block] Maturities of Lease Liabilities Lessee, Operating Lease, Liability, Maturity [Table Text Block] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Hierarchy Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [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] 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: Cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Short-term investments Debt Securities, Held-to-maturity, Fair Value Total assets Assets, Fair Value Disclosure Liabilities: Liabilities [Abstract] Contingent consideration Additions of operating lease assets Increase (Decrease) In Operating Lease, Right Of Use Asset Increase (Decrease) in Operating Lease, Right Of Use Asset Weighted-average remaining operating lease term Operating Lease, Weighted Average Remaining Lease Term Weighted-average discount rate, operating leases Operating Lease, Weighted Average Discount Rate, Percent Rental expense Operating Leases, Rent Expense, Net Stock options and restricted stock units Stock Options and Restricted Stock Units [Member] Stock Options and Restricted Stock Units [Member] Unrecognized stock-based compensation expense, net of estimated forfeitures Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Weighted average period awards are expected to be recognized Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Subsequent Event [Table] Subsequent Event [Table] 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] Share repurchase program, amount available Stock Repurchase Program, Authorized Amount Leases Lessee, Operating Leases [Text Block] Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table] Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs, by Report Line Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Cost of services revenue Cost Of Services Revenue [Member] Cost of services revenue Member. Sales and marketing Selling and Marketing Expense [Member] Research and development Research and Development Expense [Member] General and administrative General and Administrative Expense [Member] Restructuring Restructuring Charges [Member] Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Stock-based compensation expense Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Gross Finite-Lived Intangible Assets, Gross Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization