Balance Sheet Related Disclosures [Abstract] Property and equipment Property, Plant and Equipment [Table Text Block] Goodwill and Intangible Assets Schedule of Intangible Assets and Goodwill [Table Text Block] Future Amortization Expense Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Accrued Employee Compensation Accrued Employee Compensation (Table Text Block) Accrued employee compensation table text block. Components of Accumulated Other Comprehensive Loss Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Balance Sheet Components Supplemental Balance Sheet Disclosures [Text Block] Stockholders' Equity and Stock-based Compensation [Abstract] Stockholders' equity and stock-based compensation. Stockholders' Equity and Stock-based Compensation Shareholders' Equity and Share-based Payments [Text Block] Fair Value Disclosures [Abstract] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Domain] Major Types of Debt and Equity Securities [Domain] U.S. agency securities US Government Agencies Debt Securities [Member] Commercial paper Commercial Paper [Member] Corporate bonds Corporate Bond Securities [Member] U.S. government bonds US Treasury Securities [Member] Foreign government bonds Foreign Government Debt Securities [Member] Money market funds Money Market Funds [Member] Certificates of deposit Certificates of Deposit [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] Less than 12 Months Available For Sale Securities, Debt Maturities Current Available For Sale Securities, Debt Maturities Current 12 Months or Greater Available For Sale Securities, Debt Maturities NonCurrent Available For Sale Securities, Debt Maturities NonCurrent Estimated Fair Value Available-for-sale Securities Earnings Per Share [Abstract] Numerator: Net Income (Loss) Available to Common Stockholders, Diluted [Abstract] Net loss Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net loss per share: Net Income Loss Per Share [Abstract] Net income (loss) per share. Basic Earnings Per Share, Basic Diluted Earnings Per Share, Diluted Denominator: Weighted Average Number of Shares Outstanding, Basic [Abstract] Weighted average shares used in computing net loss per share: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Basic Weighted Average Number of Shares Outstanding, Basic Diluted Weighted Average Number of Shares Outstanding, Diluted Organization, Consolidation and Presentation of Financial Statements [Abstract] Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Restricted Stock Units (RSUs) Restricted Stock Units (RSUs) [Member] Stock Options Employee Stock Option [Member] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Company and Summary of Significant Accounting Policies and Estimates (Textual) [Abstract] Company and Summary of Significant Accounting Policies and Estimates (Textual) [Abstract] Company and summary of significant accounting policies and estimates. Number of Customers Concentration Of Credit Risk Number of Customers Concentration Of Credit Risk Number of Customers Concentration Of Credit Risk Percentage of Revenue Concentration Risk, Percentage Number of Customers Concentration of Credit Risk Receivables Number of Customers Concentration of Credit Risk Receivables Number of Customers Concentration of Credit Risk Receivables Percentage of accounts receivable Entity Wide Accounts Receivable Major Customer Percentage Entity wide accounts receivable major customer percentage. Range of General Payment Terms Range of General Payment Terms Range of General Payment Terms Period of RSUs time based Vesting Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Period of expiration for share based payment awards Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period Statement of Comprehensive Income [Abstract] Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax Unrealized gains (losses) on available-for-sale securities, net of tax of $4 and $8 Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax Reclassification adjustment for realized gains included in net loss Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax Other comprehensive loss Other Comprehensive Income (Loss), Net of Tax Comprehensive loss Comprehensive Income (Loss), Net of Tax, Attributable to Parent Income Tax Disclosure [Abstract] Income Taxes Income Tax Disclosure [Text Block] Business Nature of Operations [Policy Text Block] Nature of operations. Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Cash. Cash Equivalents and Investments Cash and Cash Equivalents, Investments and Restricted Cash [Policy Text Block] Cash and Cash Equivalents, Investments and Restricted Cash [Policy Text Block] Concentration of Credit Risk Concentration Risk, Credit Risk, Policy [Policy Text Block] Revenue Recognition Revenue Recognition, Policy [Policy Text Block] Deferred Revenues Revenue Recognition, Deferred Revenue [Policy Text Block] Income Taxes Income Tax, Policy [Policy Text Block] Stock-Based Compensation Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block] Recent Accounting Pronouncement New Accounting Pronouncements, Policy [Policy Text Block] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract] Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract] Less than Twelve Months, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value Less than 12 Months, Aggregate Losses Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Twelve Months or Longer, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 12 Months or Longer, Aggregate Losses Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value Aggregate Losses Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss Number of Positions Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Table] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs, by Report Line [Axis] Income Statement Location [Axis] Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Report Line [Domain] Income Statement Location [Domain] Cost of license revenues Cost of license and other [Member] Cost of license and other [Member] Cost of maintenance revenues Cost of Maintenance Revenues [Member] Cost of Maintenance Revenues [Member] Cost of services revenues Cost of Services Revenues [Member] Cost of Services Revenues [Member] Research and development Research and Development Expense [Member] Sales and marketing Selling and Marketing Expense [Member] General and administrative General and Administrative Expense [Member] Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] Total stock-based compensation expenses Share-based Compensation Unrecognized Expense Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Average Expected Recognition Period Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] 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 RSUs Outstanding Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Balance at beginning of period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Released Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Canceled Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Balance at end of period Expected to vest as of October 31, 2015 Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Expected to Vest Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Expected to Vest 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] Balance at beginning of period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Released Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Canceled Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Balance at end of period Expected to vest as of October 31, 2015 Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Expected to Vest, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Expected to Vest, Weighted Average Grant Date Fair Value Aggregate intrinsic value, Nonvested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Nonvested Aggregate intrinsic value, Vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested Aggregate intrinsic value, Expected to vest Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Expected to Vest Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Expected to Vest Number of Stock Options Outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Balance at beginning of period Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Granted Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures Exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Canceled Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Balance at end of period Vested and expected to vest as of October 31, 2015 Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Exercisable as of October 31, 2015 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] Balance at beginning of period Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Granted Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Exercised Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Canceled Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price Balance at end of period Vested and expected to vest as of October 31, 2015 Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Exercisable as of October 31, 2015 Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] Weighted Average Remaining Contractual Life Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Vested and expected to vest as of October 31, 2015 Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term Exercisable as of October 31, 2015 Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term Share-based Compensation Arrangement by Share-based Payment Award, Aggregate Intrinsic Value [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Aggregate Intrinsic Value [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Aggregate Intrinsic Value [Abstract] Aggregate intrinsic value Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Vested and expected to vest as of October 31, 2015 Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value Exercisable as of October 31, 2015 Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Share Price Share Price Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities Excluded From Computation Of Earnings Per Share By Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities Name [Domain] Antidilutive Securities, Name [Domain] Stock options to purchase common stock Restricted stock units Restricted Stock [Member] Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Net Income (Loss) Per Share (Textual) [Abstract] Net Earnings Loss Per Share (Textual) [Abstract] Net earnings loss per share. Schedule of antidilutive securities excluded from EPS Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 2016 (remainder of fiscal year) Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year 2017 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2018 Finite-Lived Intangible Assets, Amortization Expense, Year Three Intangible assets, net Finite-Lived Intangible Assets, Net Segment Reporting [Abstract] Statement [Table] Statement [Table] Statement, Geographical [Axis] Geographical [Axis] Segment, Geographical [Domain] Geographical [Domain] United States UNITED STATES Canada CANADA United Kingdom UNITED KINGDOM Other EMEA Other EMEA [Member] Other EMEA [Member] Other Other Americas [Member] Other Americas [Member] Americas Americas [Member] EMEA EMEA [Member] APAC APAC [Member] APAC [Member] Revenues by country Revenues from External Customers and Long-Lived Assets [Line Items] Revenues : Revenues [Abstract] Total revenues Revenues Entity-wide revenue attributable to other country Entity-wide revenue attributable to other country Entity-wide revenue attributable to other country, Segment disclosure EntityWideRevenueMajorCountryPercentage EntityWideRevenueMajorCountryPercentage EntityWideRevenueMajorCountryPercentage Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Level 1 Fair Value, Inputs, Level 1 [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Level 3 Fair Value, Inputs, Level 3 [Member] Cash and cash equivalents: Cash and Cash Equivalents, Fair Value Disclosure Short-term investments: Available-for-sale Securities, Current Long-term investments: Available-for-sale Securities, Noncurrent Total assets Accrued bonuses Accrued Bonuses, Current Accrued commission Accrued Sales Commission, Current Accrued vacation Accrued Vacation, Current Accrued salaries, payroll taxes and benefits Other Payroll Accruals Current Other Payroll Accruals, Current portion Total Employee-related Liabilities, Current Document and Entity Information [Abstract] Document and entity information. Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Entity Filer Category Entity Filer Category Current Fiscal Year End Date Current Fiscal Year End Date Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Line of Credit Facility [Table] Line of Credit Facility [Table] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Line of Credit Associated With Operating Lease Line of Credit Associated With Operating Lease [Domain] Line of Credit Associated With Operating Lease [Domain] Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Duration of lease for a facility to serve as its corporate headquarters Duration of Lease for Facility to Serve as its Corporate Headquarters Duration of lease for a facility to serve as its corporate headquarters. Rentable area of current corporate headquarters Rentable Area of Current Corporate Headquarters Rentable area of current corporate headquarters. Line of Credit Facility, Maximum Borrowing Capacity Line of Credit Facility, Maximum Borrowing Capacity Lease expense for all worldwide facilities and equipment Operating Leases, Rent Expense Number of Unsecured Credit Facilities Outstanding Number of Unsecured Credit Facilities Outstanding Number of Unsecured Credit Facilities Outstanding Line of Credit Facility, Current Borrowing Capacity Line of Credit Facility, Current Borrowing Capacity Statement of Financial Position [Abstract] ASSETS Assets [Abstract] CURRENT ASSETS: Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Short-term investments Short-term Investments Accounts receivable Accounts Receivable, Net, Current Deferred tax assets, current Deferred Tax Assets, Net of Valuation Allowance, Current Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Total current assets Assets, Current Long-term investments Long-term Investments Property and equipment, net Property, Plant and Equipment, Net Intangible assets, net Intangible Assets, Net (Excluding Goodwill) Deferred tax assets, noncurrent Deferred Tax Assets, Net of Valuation Allowance, Noncurrent Goodwill 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 employee compensation Deferred revenues, current Deferred Revenue, Current Other current liabilities Other Liabilities, Current Total current liabilities Liabilities, Current Deferred revenues, noncurrent Deferred Revenue, Noncurrent Other liabilities Other Liabilities, Noncurrent Total liabilities Liabilities STOCKHOLDERS’ EQUITY: Stockholders' Equity Attributable to Parent [Abstract] Common stock Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital, Common Stock Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated deficit Retained Earnings (Accumulated Deficit) Total stockholders’ equity Stockholders' Equity Attributable to Parent TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity The Company and Summary of Significant Accounting Policies and Estimates Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] Computer hardware Computer Hardware Gross Computer hardware gross. Software Capitalized Computer Software, Gross Furniture and fixtures Furniture and Fixtures, Gross Leasehold improvements Leasehold Improvements, Gross Total property and equipment Property, Plant and Equipment, Gross Less accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Property, Plant and Equipment, Net Income Statement [Abstract] License Licenses Revenue Maintenance Maintenance Revenue Services Technology Services Revenue Total revenues Cost of revenues: Cost of Revenue [Abstract] License License Costs Maintenance Maintenance Costs Services Cost of Services Total cost of revenues Cost of Revenue Gross profit : Gross Profit [Abstract] License License Gross Profit License gross profit. Maintenance Maintenance Gross Profit Maintenance gross profit. Services Services Gross Profit Services gross profit. Total gross profit Gross Profit Operating expenses: Operating Expenses [Abstract] Research and development Research and Development Expense Sales and marketing Selling and Marketing Expense General and administrative General and Administrative Expense Total operating expenses Operating Expenses Income (loss) from operations Operating Income (Loss) Interest income, net Interest Income (Expense), Nonoperating, Net Other income (expense), net Other Nonoperating Income (Expense) Loss before income taxes Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest Provision for (benefit from) income taxes Income Tax Expense (Benefit) Net income (loss) Earnings (loss) per share: Shares used in computing earnings (loss) per share: Diluted 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] Acquired Technology Acquired Technology [Member] Acquired Technology [Member] Cost Finite-Lived Intangible Assets, Gross Accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Company's basic and diluted earnings per share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Schedule of Antidilutive Securities excluded from EPS Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Statement of Cash Flows [Abstract] CASH FLOWS FROM OPERATING ACTIVITIES: Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net loss to net cash used in operating activities: Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Stock-based compensation Excess tax benefit from exercise of stock options and vesting of RSUs Excess Tax Benefit from Share-based Compensation, Operating Activities Deferred tax assets Deferred Income Taxes and Tax Credits Amortization of premium on available-for-sale securities Accretion (Amortization) of Discounts and Premiums, Investments Loss on disposals of property and equipment Gain (Loss) on Disposition of Property Plant Equipment Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Accounts receivable Increase (Decrease) in Accounts Receivable Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Accounts payable Increase (Decrease) in Accounts Payable, Trade Accrued employee compensation Increase (Decrease) in Employee Related Liabilities Other liabilities Increase (Decrease) in Other Operating Liabilities Deferred revenues Increase (Decrease) in Deferred Revenue Net cash used in operating activities Net Cash Provided by (Used in) Operating Activities CASH FLOWS FROM INVESTING ACTIVITIES: Net Cash Provided by (Used in) Investing Activities [Abstract] Purchases of available-for-sale securities Payments to Acquire Available-for-sale Securities Sales of available-for-sale securities Proceeds from Sale of Available-for-sale Securities Purchase of property and equipment Payments to Acquire Property, Plant, and Equipment Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities CASH FLOWS FROM FINANCING ACTIVITIES: Net Cash Provided by (Used in) Financing Activities [Abstract] Proceeds from issuance of common stock upon exercise of stock options Proceeds from Stock Options Exercised Taxes remitted on RSU awards vested Payments Related to Tax Withholding for Share-based Compensation Excess tax benefit from exercise of stock options and vesting of RSUs Excess Tax Benefit from Share-based Compensation, Financing Activities Net cash provided by (used in) 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 and Cash Equivalents NET CHANGE IN CASH AND CASH EQUIVALENTS Cash and Cash Equivalents, Period Increase (Decrease) CASH AND CASH EQUIVALENTS—Beginning of period CASH AND CASH EQUIVALENTS—End of period SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION: Supplemental Cash Flow Elements [Abstract] Cash paid for income taxes Income Taxes Paid, Net SUPPLEMENTAL DISCLOSURES OF NONCASH INVESTING AND FINANCING ACTIVITIES: Other Noncash Investing and Financing Items [Abstract] Accruals for purchase of property and equipment Capital Expenditures Incurred but Not yet Paid Common Stock Reserved for Issuance Common Stock Reserved for Issuance [Abstract] Common stock reserved for issuance. Exercise of stock options to purchase common stock Vesting of restricted stock units Issuances of shares available under stock plans Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Total common stock reserved for issuance Common Stock, Capital Shares Reserved for Future Issuance Net Income (Loss) Per Share Earnings Per Share [Text Block] Maximum Summary of assumptions for fair value of employee stock option estimates Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract] Expected life (in years) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Risk-free interest rate, minimum Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum Risk-free interest rate, maximum Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum Expected volatility, minimum Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum Expected volatility, maximum Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum Expected dividend yield Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Grant date fair value (USD per share), Options Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Weighted Average Grant Date Fair Value Revenues by country Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block] Property and equipment, net by geographic region Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country [Table Text Block] Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Class of Stock [Line Items] Class of Stock [Line Items] Grant date fair value (USD per share) Total intrinsic value of options exercised Stockholders Equity and Stock Based Compensation (Additional Textual) [Abstract] Stockholders Equity and Stock Based Compensation (Additional Textual) [Abstract] Stockholders equity and stock based compensation. Common stock, shares authorized Common Stock, Shares Authorized Common stock, par value Common Stock, Par or Stated Value Per Share Common Stock, Shares, Outstanding Common Stock, Shares, Outstanding Stock-based compensation expense Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] Unrecognized compensation cost, adjusted for estimated forfeitures Schedule of Unrecognized Compensation Cost, Nonvested Awards [Table Text Block] Schedule of Share-based Compensation, Restricted Stock Units Award Activity Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block] Schedule of Share-based Compensation, Stock Options, Activity Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] Black-Scholes valuation assumptions Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Common Stock Reserved for Issuance Common Stock Reserved For Issuance [Table Text Block] Common stock reserved for issuance. Tax provision on unrealized gains on available-for-sale securities Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax Fair Value of Financial Instruments Fair Value Disclosures [Text Block] Goodwill [Roll Forward] Goodwill [Roll Forward] Balance at beginning of period Balance at end of period Segment Information Segment Reporting Disclosure [Text Block] Amortized Cost Available-for-sale Securities, Amortized Cost Basis Unrealized Gains Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax Unrealized Losses Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Accumulated Translation Adjustment [Member] Accumulated Translation Adjustment [Member] Available-for-sale Securities [Member] Available-for-sale Securities [Member] Statement [Line Items] Statement [Line Items] Increase (Decrease) in Accumulated Other Comprehensive Income (Loss) [Roll Forward] Increase (Decrease) in Accumulated Other Comprehensive Income (Loss) [Roll Forward] Increase (Decrease) in Accumulated Other Comprehensive Income (Loss) [Roll Forward] Balance at beginning of period Other comprehensive gain (loss) before reclassification Other Comprehensive Income (Loss), before Reclassifications, before Tax Amounts reclassified from accumulated other comprehensive loss to earnings Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Tax effect Other Comprehensive Income Loss Before Reclassifications Tax Other Comprehensive Income Loss Before Reclassifications Tax Balance at end of period Property and equipment pledged as collateral Property and Equipment Pledged as Collateral Property and equipment pledged as collateral. Depreciation Depreciation Amortization expense Amortization of Intangible Assets Benefit from income taxes Effective Income Tax Rate, Continuing Operations Effective Income Tax Rate Reconciliation, Percent Percentage of Statutory federal income tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Undistributed Earnings of Foreign Subsidiaries Undistributed Earnings of Foreign Subsidiaries Undistributed earnings from certain foreign subsidiaries Deferred Tax Liabilities, Undistributed Foreign Earnings Unrecognized Tax Benefits, Period Increase (Decrease) Unrecognized Tax Benefits, Period Increase (Decrease) Unrecognized tax benefits Unrecognized Tax Benefits that Would Impact Effective Tax Rate Americas North America [Member] EMEA APAC Segment Reporting, Asset Reconciling Item [Line Items] Segment Reporting, Asset Reconciling Item [Line Items] Long-lived asset, including intangibles and goodwill Property, Plant and Equipment [Abstract] Total Long-lived Assets, Property, Plant and Equipment, Net, Including Intangibles and Goodwill Long-lived Assets, Property, Plant and Equipment, Net, Including Intangibles and Goodwill Schedule of Available-for-sale Securities Reconciliation Schedule of Available-for-sale Securities Reconciliation [Table Text Block] Schedule of Unrealized Loss on Investments Schedule of Unrealized Loss on Investments [Table Text Block] Investments Classified by Contractual Maturity Date Investments Classified by Contractual Maturity Date [Table Text Block] Fair Value, Assets Measured on Recurring Basis Fair Value, Assets Measured on Recurring Basis [Table Text Block]