Accounting Policies [Abstract]
Revenue from External Customers by Products and Services [Table]
Revenue from External Customers by Products and Services [Table]
Range [Axis]
Range [Axis]
Range [Domain]
Range [Domain]
Minimum [Member]
Minimum [Member]
Maximum [Member]
Maximum [Member]
Revenue from External Customer [Line Items]
Revenue from External Customer [Line Items]
Revenue recognition period (in years)
Revenue Recognition Period
Revenue Recognition Period
Other Comprehensive Income (Loss), Net of Tax [Abstract]
ACCUMULATED OTHER COMPREHENSIVE LOSS
Comprehensive Income (Loss) Note [Text Block]
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Title of Individual [Axis]
Title of Individual [Axis]
Relationship to Entity [Domain]
Relationship to Entity [Domain]
Non-executive Employee [Member]
Employee [Member]
Employee [Member]
Vesting [Axis]
Vesting [Axis]
Vesting [Domain]
Vesting [Domain]
Award Type [Axis]
Award Type [Axis]
Award Type [Domain]
Equity Award [Domain]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance Share, Weighted Average Assumptions [Abstract]
Performance Share, Weighted Average Assumptions [Abstract]
Performance Share, Weighted Average Assumptions [Abstract]
Expected term in years
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term
Volatility
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate
Risk-free interest rate
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate
Dividend rate
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate
Granted (shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period
Granted, weighted-average grant-date fair value per share (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
Compensation cost not yet recognized
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized
Compensation cost not yet recognized period of recognition
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition
Income Tax Disclosure [Abstract]
Current:
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
Federal
Current Federal Tax Expense (Benefit)
State
Current State and Local Tax Expense (Benefit)
Foreign
Current Foreign Tax Expense (Benefit)
Total current
Current Income Tax Expense (Benefit)
Deferred:
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Federal
Deferred Federal Income Tax Expense (Benefit)
State
Deferred State and Local Income Tax Expense (Benefit)
Foreign
Deferred Foreign Income Tax Expense (Benefit)
Total deferred
Deferred Income Tax Expense (Benefit)
Provision for income taxes
Income Tax Expense (Benefit)
Segment Reporting [Abstract]
SEGMENT INFORMATION
Segment Reporting Disclosure [Text Block]
Schedule of Estimated Useful Lives of Property and Equipment - net
Schedule of Estimated Useful Lives of Property, Plant and Equipment [Table Text Block]
Schedule of Estimated Useful Lives of Property, Plant and Equipment [Table Text Block]
Schedule of Notional Amounts of Outstanding Derivative Positions
Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block]
Revenue from external customers by geographic region
Revenue from External Customers by Geographic Areas [Table Text Block]
Property and equipment by geographic region
Long-lived Assets by Geographic Areas [Table Text Block]
Retirement Benefits [Abstract]
Matching contribution on employee contributions, Percent
Defined Contribution Plan, Employer Matching Contribution, Percent of Match
Maximum contribution percentage of each employee's eligible earnings, Percent
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay
Matching contributions to the RRSP and 401(k) Plans
Defined Contribution Plan, Employer Matching Contribution, Amount
Defined Contribution Plan, Employer Matching Contribution, Amount
Statement of Financial Position [Abstract]
Statement [Table]
Statement [Table]
Statement, Scenario [Axis]
Scenario [Axis]
Scenario, Unspecified [Domain]
Scenario, Unspecified [Domain]
Statement [Line Items]
Statement [Line Items]
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—Net of reserves for sales returns and doubtful accounts of $14,503 and $11,235 at December 31, 2017 and 2016, respectively
Accounts Receivable, Net, Current
Inventory
Inventory, Net
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
DEFERRED TAX ASSETS
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent
OTHER INTANGIBLE ASSETS—NET
Intangible Assets, Net (Excluding Goodwill)
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 liabilities
Accrued Liabilities, Current
Accrued payroll and compensation
Employee-related Liabilities, Current
Income taxes payable
Accrued Income Taxes, Current
Deferred revenue
Deferred Revenue, Current
Total current liabilities
Liabilities, Current
DEFERRED REVENUE
Deferred Revenue, Noncurrent
INCOME TAX LIABILITIES
Accrued Income Taxes, Noncurrent
OTHER LIABILITIES
Other Liabilities, Noncurrent
Total liabilities
Liabilities
COMMITMENTS AND CONTINGENCIES (Note 10)
Commitments and Contingencies
STOCKHOLDERS’ EQUITY:
Stockholders' Equity Attributable to Parent [Abstract]
Common stock, $0.001 par value—300,000 shares authorized; 167,890 and 173,078 shares issued and outstanding at December 31, 2017 and 2016, respectively
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
Retained earnings (deficit)
Retained Earnings (Accumulated Deficit)
Total stockholders’ equity
Stockholders' Equity Attributable to Parent
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY
Liabilities and Equity
Statement of Stockholders' Equity [Abstract]
Equity Components [Axis]
Equity Components [Axis]
Equity Component [Domain]
Equity Component [Domain]
Common Stock [Member]
Common Stock [Member]
Additional Paid-in Capital [Member]
Additional Paid-in Capital [Member]
Accumulated Other Comprehensive (Loss) Income [Member]
AOCI Attributable to Parent [Member]
Retained Earnings [Member]
Retained Earnings [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, shares
Shares, Issued
Balance
Issuance of common stock in connection with equity incentive plans - net of tax withholding (in shares)
Stock Issued During Period, Shares, Equity Incentive Plans
Stock Issued During Period, Shares, Equity Incentive Plans
Issuance of common stock in connection with equity incentive plans - net of tax withholding
Stock Issued During Period, Value, Equity Incentive Plans, Net of Taxes Withheld
Stock Issued During Period, Value, Equity Incentive Plans, Net of Taxes Withheld
Repurchase and retirement of common stock (in shares)
Stock Repurchased and Retired During Period, Shares
Repurchase and retirement of common stock
Stock Repurchased and Retired During Period, Value
Stock-based compensation expense
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition
Cumulative-effect adjustment from adoption of ASU 2016-09
Cumulative Effect of New Accounting Principle in Period of Adoption
Income tax benefit (shortfall) associated with stock-based compensation
Adjustment to Additional Paid in Capital, Income Tax Effect from Share-based Compensation, Net
Net unrealized gain (loss) on investments - net of taxes
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax
Net income
Net Income (Loss) Attributable to Parent
Balance, shares
Balance
Schedule of Finite-Lived Intangible Assets by Major Class [Table]
Schedule of Finite-Lived Intangible Assets [Table]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets [Line Items]
Useful life of finite-lived intangible assets
Finite-Lived Intangible Asset, Useful Life
DEFINED CONTRIBUTION PLANS
Compensation and Employee Benefit Plans [Text Block]
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]
Employee Severance and Other Benefits [Member]
Employee Severance [Member]
Contract Terminations and Other Charges [Member]
Contract Termination [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Cost and Reserve [Line Items]
Balance, beginning
Restructuring Reserve
Costs incurred
Restructuring Charges
Less cash payments
Payments for Restructuring
Less non-cash items
Restructuring Reserve, Settled without Cash
Balance, ending
Share Repurchase Program [Axis]
Share Repurchase Program [Axis]
Share Repurchase Program [Domain]
Share Repurchase Program [Domain]
2016 Share Repurchase Program [Member]
Share Repurchase Program [Member]
Share Repurchase Program [Member]
Share Repurchase Program [Line Items]
Stock repurchase program, authorized amount
Stock Repurchase Program, Authorized Amount
Additional shares authorized
Stock Repurchase Program, Additional Authorized Amount
Stock Repurchase Program, Additional Authorized Amount
Stock repurchased in the period, shares
Stock repurchased in the period, value
Stock repurchase program, unused balance
Stock Repurchase Program, Remaining Authorized Repurchase Amount
Commitments and Contingencies Disclosure [Abstract]
Contractual Obligation, Fiscal Year Maturity Schedule
Contractual Obligation, Fiscal Year Maturity Schedule [Table Text Block]
Related Party Transactions [Abstract]
RELATED PARTY TRANSACTIONS
Related Party Transactions Disclosure [Text Block]
Schedule of Segment Reporting Information, by Segment [Table]
Schedule of Segment Reporting Information, by Segment [Table]
Statement, Geographical [Axis]
Geographical [Axis]
Segment, Geographical [Domain]
Geographical [Domain]
Americas [Member]
Americas [Member]
U.S.
UNITED STATES
CANADA
CANADA
Other Americas
Other Americas [Member]
Other Americas [Member]
EMEA
Europe, Middle East and Africa [Member]
Europe, Middle East and Africa [Member]
France
FRANCE
Other EMEA
Other Europe, Middle East and African Countries [Member]
Other Europe, Middle East and African Countries [Member]
APAC
Asia Pacific and Japan [Member]
Asia Pacific and Japan [Member]
All Countries [Domain]
All Countries [Domain]
Segment Reporting Information [Line Items]
Segment Reporting Information [Line Items]
Business activity (in business activities)
Number of Business Activities
Number of business activities
Segment managers responsible for operations (in segment managers)
Number of Segment Managers Responsible for Operations
Number of Segment Managers Responsible for Operations
Number of operating segments (in operating segments)
Number of Operating Segments
Number of reportable segments (in reportable segments)
Number of Reportable Segments
Revenue
Revenue, Net
Property and equipment - net
Schedule of Deferred Taxes [Table]
Schedule of Deferred Taxes [Table]
Schedule of Deferred Taxes [Table]
Balance Sheet Location [Axis]
Balance Sheet Location [Axis]
Balance Sheet Location [Domain]
Balance Sheet Location [Domain]
Income Taxes Payable [Member]
Income Taxes Payable [Member]
Income Taxes Payable [Member]
Gain Contingencies, Nature [Axis]
Gain Contingencies, Nature [Axis]
Gain Contingency, Nature [Domain]
Gain Contingency, Nature [Domain]
U.S. Tax Court Opinion [Member]
Reduction in Taxes [Member]
Business Acquisition [Axis]
Business Acquisition [Axis]
Business Acquisition, Acquiree [Domain]
Business Acquisition, Acquiree [Domain]
Meru Networks, Inc. [Member]
Meru Networks, Inc. [Member]
Meru Networks, Inc. [Member]
AccelOps, Inc. [Member]
AccelOps, Inc. [Member]
AccelOps, Inc. [Member]
Income Tax Authority [Axis]
Income Tax Authority [Axis]
Income Tax Authority [Domain]
Income Tax Authority [Domain]
Foreign Tax Authority [Member]
Foreign Tax Authority [Member]
Federal [Member]
Domestic Tax Authority [Member]
State and Local Jurisdiction [Member]
State and Local Jurisdiction [Member]
California [Member]
State Jurisdiction, California [Member]
State Jurisdiction, California [Member]
Deferred Taxes [Line Items]
Deferred Taxes [Line Items]
Deferred Taxes [Line Items]
Income tax benefit from employee stock option plans
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation
Foreign earnings and profits repatriated
Foreign Earnings Repatriated
Foreign tax credit resulting from earnings and profits repatriated
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount
Deferred tax assets:
Components of Deferred Tax Assets [Abstract]
General business credit carryforward
Deferred Tax Assets, Tax Credit Carryforwards, General Business
Deferred revenue
Deferred Tax Assets, Deferred Income
Nondeductible reserves and accruals
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals
Net operating loss carryforward
Deferred Tax Assets, Operating Loss Carryforwards
Stock-based compensation expense
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost
Depreciation and amortization
Deferred Tax Assets, Property, Plant and Equipment
Other
Deferred Tax Assets, Other
Total deferred tax assets
Deferred Tax Assets, Net of Valuation Allowance
Net operating loss carryforwards
Operating Loss Carryforwards
Tax credit carryforwards
Tax Credit Carryforward, Amount
Tax benefit
Canadian deemed dividend distribution
Canadian Deemed Dividend Distribution
Canadian Deemed Dividend Distribution
Tax impact of Canadian deemed dividend distribution
Effective Income Tax Rate Reconciliation, Canadian Deemed Dividend Distribution
Effective Income Tax Rate Reconciliation, Canadian Deemed Dividend Distribution
Deferred tax benefit of the Canadian stock based compensation expense
Income tax Expense (Benefit), Deferred Tax Benefit, Canadian Stock Based Compensation Expense
Income tax Expense (Benefit), Deferred Tax Benefit, Canadian Stock Based Compensation Expense
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Finite-Lived and Indefinite-Lived Intangible Assets by Major Class
Schedule of Finite-Lived Intangible Assets [Table Text Block]
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]
Restricted Stock Units (RSUs) [Member]
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Balance, beginning (shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number
Granted (shares)
Forfeited (shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period
Vested (shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period
Balance, ending (shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Balance, weighted-average grant-date fair value per share (in dollars per share)—beginning
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value
Forfeited, weighted-average grant-date fair value per share (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
Vested, weighted-average grant-date fair value per share (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
Balance, weighted-average grant-date fair value per share (in dollars per share)—ending
Shares withheld for taxes
Shares Paid for Tax Withholding for Share Based Compensation
Tax withholding upon vesting of restricted stock awards
Payments Related to Tax Withholding for Share-based Compensation
Financial Instruments and Fair Value [Abstract]
Financial Instruments and Fair Value [Abstract]
Fair Value, by Balance Sheet Grouping [Table]
Fair Value, by Balance Sheet Grouping [Table]
Measurement Frequency [Axis]
Measurement Frequency [Axis]
Fair Value, Measurement Frequency [Domain]
Fair Value, Measurement Frequency [Domain]
Nonrecurring [Member]
Fair Value, Measurements, Nonrecurring [Member]
Income Statement Location [Axis]
Income Statement Location [Axis]
Income Statement Location [Domain]
Income Statement Location [Domain]
Cost of Product Revenue & Sales and Marketing [Member]
Cost of Sales [Member]
Coyote Point Systems, Inc. [Member]
Coyote Point Systems, Inc. [Member]
Coyote Point Systems, Inc. [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impairment of long-lived assets
Impairment of Intangible Assets (Excluding Goodwill)
Business Combinations [Abstract]
Schedule of Business Acquisitions, by Acquisition [Table]
Schedule of Business Acquisitions, by Acquisition [Table]
Indefinite-lived Intangible Assets [Axis]
Indefinite-lived Intangible Assets [Axis]
Indefinite-lived Intangible Assets, Major Class Name [Domain]
Indefinite-lived Intangible Assets, Major Class Name [Domain]
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]
Business Acquisition [Line Items]
Business Acquisition [Line Items]
Cash and cash equivalents
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents
Accounts receivable
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables
Inventory
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory
Prepaid expenses and other assets
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets
Property and equipment
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment
Deferred tax assets
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets Noncurrent
Finite-lived intangible assets
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles
Indefinite-lived intangible assets in process research and development
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets
Goodwill
Total assets acquired
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets
Deferred revenue
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Deferred Revenue
Accounts payable and accrued liabilities
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable
Other liabilities
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other
Total liabilities assumed
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities
Total purchase price allocation
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net
Inventory Disclosure [Abstract]
INVENTORY
Inventory Disclosure [Text Block]
Cash consideration paid, net
Payments to Acquire Businesses, Gross
Consideration paid
Business Combination, Consideration Transferred
Withholding tax liability
Business Combination, Consideration Transferred, Estimated Fair Value of Shares Withheld for Taxes
Business Combination, Consideration Transferred, Estimated Fair Value of Shares Withheld for Taxes
Estimated fair value of RSUs
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable
Shares of common stock converted (shares)
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares
Acquisition-related costs
Business Combination, Acquisition Related Costs
Concentration Risk [Table]
Concentration Risk [Table]
Concentration Risk by Type [Axis]
Concentration Risk Type [Axis]
Concentration Risk Type [Domain]
Concentration Risk Type [Domain]
Customer Concentration Risk [Member]
Customer Concentration Risk [Member]
Customer [Axis]
Customer [Axis]
Customer [Domain]
Customer [Domain]
Exclusive Networks Group [Member]
Exclusive Networks Group [Member]
Exclusive Networks Group [Member]
Fin Tec Computers [Member]
Fin Tec Computers [Member]
Fin Tec Computers [Member]
Concentration Risk by Benchmark [Axis]
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark [Domain]
Concentration Risk Benchmark [Domain]
Accounts Receivable [Member]
Accounts Receivable [Member]
Sales Revenue [Member]
Sales Revenue [Member]
Sales Revenue [Member]
Concentration Risk [Line Items]
Concentration Risk [Line Items]
Concentration (percent)
Concentration Risk, Percentage
Investments, All Other Investments [Abstract]
Investments in equity securities of privately-held companies
Cost Method Investments, Original Cost
Summary of Investments
Schedule of Amortized Costs, Unrealized Gains and Losses, and Fair Value of Available For Sale Securities [Table Text Block]
Schedule of Amortized Costs, Unrealized Gains and Losses, and Fair Value of Available For Sale Securities [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]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
Inventory
Schedule of Inventory, Current [Table Text Block]
Share Repurchase Program [Member]
Share-based Compensation Arrangement by Share-based Payment Award Authorized Shares Changes [Axis]
Share-based Compensation Arrangement by Share-based Payment Award Authorized Shares Changes [Axis]
Share-based Compensation Arrangement by Share-based Payment Award Authorized Shares Changes [Axis]
Share-based Compensation Arrangement by Share-based Payment Award Authorized Shares Changes [Domain]
Share-based Compensation Arrangement by Share-based Payment Award Authorized Shares Changes [Domain]
Share-based Compensation Arrangement by Share-based Payment Award Authorized Shares Changes [Domain]
Share-based Compensation Award Authorized Number Changes, Lesser of Fixed Amount of Shares [Member]
Share-based Compensation Award Authorized Number Changes, Lesser of Fixed Amount of Shares [Member]
Share-based Compensation Award Authorized Number Changes, Lesser of Fixed Amount of Shares [Member]
Share-based Compensation Award Authorized Number Changes, Lesser of Outstanding Shares on Last Day of Preceeding Year [Member]
Share-based Compensation Award Authorized Number Changes, Lesser of Outstanding Shares on Last Day of Preceeding Year [Member]
Share-based Compensation Award Authorized Number Changes, Lesser of Outstanding Shares on Last Day of Preceeding Year [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments, by Title of Individual [Axis]
Title of Individual with Relationship to Entity [Domain]
Individual Owning 10 Percent or More of Stock [Member]
Individual Owning 10 Percent or More of Stock [Member]
Individual Owning 10 Percent or More of Stock [Member]
Employee [Member]
Directors and Other Service Providers [Member]
Directors and Other Service Providers [Member]
Directors and Other Service Providers [Member]
Individual Owning 10 Percent or Less of Stock [Member]
Individual Owning 10 Percent or Less of Stock [Member]
Individual Owning 10 Percent or Less of Stock [Member]
Plan Name [Axis]
Plan Name [Axis]
Plan Name [Domain]
Plan Name [Domain]
Stock Plans, 2000 and 2008 [Member]
Stock Plans, 2000 and 2008 [Member]
Stock Plans, 2000 and 2008 [Member]
Stock Plan, 2009 [Member]
Stock Plan, 2009 [Member]
Stock Plan, 2009 [Member]
Stock Options, Nonqualifying [Member]
Stock Options, Nonqualifying [Member]
Stock Options, Nonqualifying [Member]
Stock Options [Member]
Employee Stock Option [Member]
ESPP [Member]
Employee Stock [Member]
Stock Options and Restricted Stock Units, Outstanding [Member]
Stock Options and Restricted Stock Units, Outstanding [Member]
Stock Options and Restricted Stock Units, Outstanding [Member]
Reserved for Future Option, Restricted Stock Unit and Other Equity Award Grants [Member]
Reserved for Future Option, Restricted Stock Unit and Other Equity Award Grants [Member]
Reserved for Future Option, Restricted Stock Unit and Other Equity Award Grants [Member]
Reserved for Future ESPP Issuances [Member]
Reserved for Future ESPP Issuances [Member]
Reserved for Future ESPP Issuances [Member]
Stock-based Compensation Plan [Member]
Stock Compensation Plan [Member]
Stock repurchase program, remaining repurchase amount
Minimum stock ownership percent triggering early award expiration
Share-based Compensation Arrangement by Share-based Payment Award, Minimum Stock Ownership Percent Triggering Early Award Expiration
Share-based Compensation Arrangement by Share-based Payment Award, Minimum Stock Ownership Percent Triggering Early Award Expiration
Percent of market price for non-statutory options
Share-based Compensation Arrangement by Share-based Payment Award, Minimum Exericse Price as Percent of Fair Value On Grant Date
Share-based Compensation Arrangement by Share-based Payment Award, Minimum Exericse Price as Percent of Fair Value On Grant Date
Option contractual term
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period
Award vesting period
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period
Remaining shares available for grant under the plans
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant
Number of shares authorized before adjustments
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Before Adjustments
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Before Adjustments For Forfeitures, Terminations, and Repurchases.
Number of shares authorized
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized
Number of shares authorized, maximum
Share-based Compensation Arrangement by Share-based Payment Award, Increase to Number of Shares Authorized Per Original Plan Terms, Maximum
Share-based Compensation Arrangement by Share-based Payment Award, Increase to Number of Shares Authorized Per Original Plan Terms, Maximum
Increase to number of shares authorized, maximum, percent
Share-based Compensation Arrangement by Share-based Payment Award, Increase to Number of Shares Authorized Per Original Plan Terms, Maximum, Percent
Share-based Compensation Arrangement by Share-based Payment Award, Increase to Number of Shares Authorized Per Original Plan Terms, Maximum, Percent
Award expiration period
Share-based Compensation Arrangement by Share-based Payment Award, Award Expiration Period
Share-based Compensation Arrangement by Share-based Payment Award, Award Expiration Period
Maximum stock ownership percent triggering early award expiration
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Stock Ownership Percent For Options Granted to Individuals
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Stock Ownership Percent For Options Granted to Individuals
Common stock reserved for future issuances
Common Stock, Capital Shares Reserved for Future Issuance
Maximum employee contribution rate (percent)
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Employee Subscription Rate
Purchase price of common stock as percentage of lower of fair market value of common stock on first day of offering period or last day of purchase period
Purchase Price of Common Stock As Percentage Of Lower Of Fair Market Value Of Common Stock On First Day Of Offering Period Or Last Day Of Purchase Period
Purchase Price of Common Stock As Percentage Of Lower Of Fair Market Value Of Common Stock On First Day Of Offering Period Or Last Day Of Purchase Period
Periodic purchase limit (shares)
Employee Stock Purchase Plan, Periodic Purchase Limit
Employee Stock Purchase Plan, Periodic Purchase Limit
Annual purchase limit
Employee Stock Purchase Plan, Annual Purchase Limit
Employee Stock Purchase Plan, Annual Purchase Limit
Business Combination, Non-Option Equity Instrument Assumed, Fair Value
Business Combination, Non-Option Equity Instrument Assumed, Fair Value
Business Combination, Non-Option Equity Instrument Assumed, Fair Value
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Balance - Beginning (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, Net of Forfeitures
Forfeited (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period
Exercised (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period
Balance - Ending (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Balance - Beginning (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
Forfeited (in dollars per share)
Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures 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
Balance - Ending (in dollars per share)
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]
Options vested and expected to vest, Outstanding (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number
Options vested and expected to vest, Weighted average exercise price (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 vested and expected to vest, Weighted average remaining contractual life (in years)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term
Options vested and expected to vest, Aggregate intrinsic value
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value
Options exercisable, Outstanding (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number
Options exercisable, Weighted average exercise price (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price
Options exercisable, Weighted average remaining contractual life (in years)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term
Options exercisable, Aggregate intrinsic value
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value
Weighted-average fair value per share granted
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value
Intrinsic value of options exercised
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value
Total fair value of awards vested
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value
Estimated fair value of earned equity awards assumed by Fortinet
Business Combination, Consideration Transferred, Fair Value, Earned Equity Awards Assumed
Business Combination, Consideration Transferred, Fair Value, Earned Equity Awards Assumed
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number
Short-term investments, minimum original maturity
Investments, Classification as Short-term, Minimum Original Maturity
Investments, Classification as Short-term, Minimum Original Maturity
Short-term investments, maximum original maturity
Investments, Classification as Short-term, Maximum Original Maturity
Investments, Classification as Short-term, Maximum Original Maturity
Long-term investments, minimum original maturity
Investments, Classification as Long-term, Minimum Maturity
Investments, Classification as Long-term, Minimum Maturity
INVESTMENTS IN PRIVATELY-HELD COMPANIES
Cost-method Investments, Description [Text Block]
STOCKHOLDERS' EQUITY
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]
Property, Plant and Equipment [Abstract]
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]
Building and building improvements [Member]
Building and Building Improvements [Member]
Computer equipment and software [Member]
Computer Equipment [Member]
Land [Member]
Land [Member]
Leasehold improvements and tooling [Member]
Leaseholds and Leasehold Improvements [Member]
Evaluation units [Member]
Evaluation Units [Member]
Evaluation units [Member]
Furniture and fixtures [Member]
Furniture and Fixtures [Member]
Construction-in-progress [Member]
Construction in Progress [Member]
Payment to Acquire Real Property [Member]
Land and Building [Member]
Building [Member]
Building [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Net, by Type [Abstract]
Property, Plant and Equipment, Net, by Type [Abstract]
Total property and equipment
Property, Plant and Equipment, Gross
Less: accumulated depreciation
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment
Property and equipment - net
Depreciation expense
Depreciation
Purchase of real estate properties
Payments to Acquire Productive Assets
COMMITMENTS AND CONTINGENCIES
Commitments and Contingencies Disclosure [Text Block]
Restructuring Plan [Axis]
Restructuring Plan [Axis]
Restructuring Plan [Domain]
Restructuring Plan [Domain]
Restructuring charges
Restructuring reserve
Employee Stock Purchase Plan [Member]
Employee Stock Purchase Plan [Member]
Employee Stock Purchase Plan [Member]
INCOME TAXES
Income Tax Disclosure [Text Block]
Summary of Restructuring Activity
Restructuring and Related Costs [Table Text Block]
Earnings Per Share [Abstract]
Schedule of Earnings Per Share [Table]
Schedule of Earnings Per Share [Table]
Earnings Per Share [Line Items]
Earnings Per Share [Line Items]
Earnings Per Share [Line Items]
Basic shares:
Weighted Average Number of Shares Outstanding, Basic [Abstract]
Weighted-average common shares outstanding-basic (in shares)
Weighted Average Number of Shares Outstanding, Basic
Diluted shares:
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Effect of potentially dilutive securities:
Incremental Weighted Average Shares Attributable to Dilutive Effect [Abstract]
Employee stock options and purchase rights (in shares)
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements
Weighted-average shares used to compute diluted net income per share (in shares)
Weighted Average Number of Shares Outstanding, Diluted
Basic (in dollars per share)
Earnings Per Share, Basic
Diluted (in dollars per share)
Earnings Per Share, Diluted
Income Tax Contingency [Table]
Income Tax Contingency [Table]
Scenario, Forecast [Member]
Scenario, Forecast [Member]
Subsequent Event Type [Axis]
Subsequent Event Type [Axis]
Subsequent Event Type [Domain]
Subsequent Event Type [Domain]
Final review approval
Subsequent Event [Member]
Income Tax Liabilities - Non-current [Member]
Income Tax Liabilities - Non-current [Member]
Income Tax Liabilities - Non-current [Member]
Income Tax Contingency [Line Items]
Income Tax Contingency [Line Items]
Unrecognized tax benefits that would favoraby affect effective tax rate
Unrecognized Tax Benefits that Would Impact Effective Tax Rate
Accrued interest and penalties related to uncertain tax benefits
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefits, beginning of year
Unrecognized Tax Benefits
Gross increases for tax positions related to the current year
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions
Gross decreases for tax positions related to the current year
Unrecognized Tax Benefits, Decrease Resulting from Current Period Tax Positions
Gross increases for tax positions related to the prior year
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions
Gross decreases for tax positions related to prior year
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions
Gross decreases for tax positions related to expiration of statute of limitations
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations
Unrecognized tax benefits, end of year
Liability for uncertain tax positions
Liability for Uncertainty in Income Taxes, Noncurrent
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit
Approved refund claim
Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority
Tax at federal statutory tax rate
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount
Foreign income taxed at different rates
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount
Foreign withholding taxes
Effective Income Tax Rate Reconciliation, Foreign Withholding Taxes, Amount
Effective Income Tax Rate Reconciliation, Foreign Withholding Taxes, Amount
Stock-based compensation expense
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Compensation Cost, Amount
Foreign tax credit
Effective Income Tax Rate Reconciliation, Tax Credit, Foreign, Amount
State taxes—net of federal benefit
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount
Research and development credit
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount
Dividend distribution
Deferred tax asset remeasurement due to reduction in the federal corporate income tax rate
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount
One-time transition tax
Effective Income Tax Rate Reconciliation, Tax Cuts and Jobs Act of 2017, Transition Tax on Accumulated Foreign Earnings, Amount
Amount of reported income tax expense (benefit) in excess of (less than) expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operations, attributable to increase (decrease) from transition tax on accumulated earnings of controlled foreign corporation deemed repatriated pursuant to Tax Cuts and Jobs Act of 2017
Other
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount
Provision for income taxes
GOODWILL AND OTHER INTANGIBLE ASSETS - Net
Goodwill and Intangible Assets Disclosure [Text Block]
Property, Plant and Equipment - Net
Property, Plant and Equipment [Table Text Block]
Schedule of Available-for-sale Securities [Table]
Schedule of Available-for-sale Securities [Table]
Schedule of Available-for-sale Securities, 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]
Corporate debt securities [Member]
Corporate Debt Securities [Member]
Commercial paper [Member]
Commercial Paper, Not Included with Cash and Cash Equivalents [Member]
Certificates of deposit and term deposits [Member]
Certificates of Deposit [Member]
U.S. government and agency securities [Member]
US Treasury and Government [Member]
Municipal bonds [Member]
US States and Political Subdivisions Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Schedule of Available-for-sale Securities [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax
Available-for-sale Securities, Gross Realized Losses
Amortized Cost
Available-for-sale Debt Securities, Amortized Cost Basis
Unrealized Gains
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax
Unrealized Losses
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax
Fair Value
Available-for-sale Securities, Debt Securities
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value
Less Than 12 Months, Unrealized Losses
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss
12 Months or Greater, Fair Value
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value
12 Months or Greater, Unrealized Losses
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss
Total, Fair Value
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value
Total, Unrealized Losses
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Due within one year
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value
Due within one to three years
Available-for-sale Securities, Debt Maturities, after One Year, Fair Value
This item represents the fair value of debt securities which are expected to mature after one year from the balance sheet date and which are categorized neither as held-to-maturity nor trading securities.
Fair Value
Accumulated Other Comprehensive (Loss) Income [Table]
Accumulated Other Comprehensive Income (Loss) [Table]
Unrealized Gains and Losses on Investments [Member]
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Accumulated Other Comprehensive (Loss) Income [Line Items]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive (Loss) Income [Roll Forward]
Accumulated Other Comprehensive Income [Roll Forward]
Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance
AOCI Including Portion Attributable to Noncontrolling Interest, before Tax
Other comprehensive loss before reclassifications
Other Comprehensive Income (Loss), before Reclassifications, before Tax
Amounts reclassified from accumulated other comprehensive loss
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax
Net current-period other comprehensive loss
Other Comprehensive Income (Loss), before Tax
Ending balance
Tax Benefit Related To Items of Other Comprehensive Income or Loss [Roll Forward]
Accumulated Other Comprehensive Income, Tax [Roll Forward]
Accumulated Other Comprehensive Income, Tax [Roll Forward]
Beginning balance, tax
Accumulated Other Comprehensive Income Loss Tax
Accumulated Other Comprehensive Income Loss Tax
Other comprehensive income before reclassifications, tax
Other Comprehensive Income (Loss) before Reclassifications, Tax
Amounts reclassified from accumulated other comprehensive income, tax
Reclassification from Accumulated Other Comprehensive Income, Current Period, Tax
Reclassification from Accumulated Other Comprehensive Income, Current Period, Tax
Net current-period other comprehensive income, tax
Other Comprehensive Income (Loss), Tax
Ending balance, tax
Foreign currency transaction gains (losses)
Foreign Currency Transaction Gain (Loss), before Tax
PROPERTY AND EQUIPMENT—Net
Property, Plant and Equipment Disclosure [Text Block]
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table]
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table]
Income Statement Location [Axis]
Income Statement Location [Domain]
Cost of product revenue [Member]
Cost of Goods Sold [Member]
Cost of Goods Sold [Member]
Cost of service revenue [Member]
Cost of Services [Member]
Cost of Services [Member]
Research and development [Member]
Research and Development Expense [Member]
Sales and marketing [Member]
Selling and Marketing Expense [Member]
General and administrative [Member]
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 expense
Allocated Share-based Compensation Expense
Income tax benefit from employee stock option plans
Employee Service Share-based Compensation, Tax Benefit from Exercise of Stock Options
Fair Value Measurements, Recurring and Nonrecurring [Table]
Fair Value Measurements, Recurring and Nonrecurring [Table]
Adjustment [Member]
Scenario, Adjustment [Member]
Measurement Basis [Axis]
Measurement Basis [Axis]
Fair Value Measurement [Domain]
Fair Value Measurement [Domain]
Portion at Fair Value Measurement [Member]
Portion at Fair Value Measurement [Member]
Fair Value [Member]
Estimate of Fair Value Measurement [Member]
Reported as [Member]
Reported Value Measurement [Member]
Money market funds [Member]
Money Market Funds, Excluding Commercial Paper [Member]
Money Market Funds, Excluding Commercial Paper [Member]
Recurring [Member]
Fair Value, Measurements, Recurring [Member]
Cash equivalents [Member]
Cash Equivalents, Line Item [Member]
Cash Equivalents, Line Item [Member]
Short-term investments [Member]
Short Term Investments, Line Item [Member]
Short Term Investments, Line Item [Member]
Long-term investments [Member]
Long Term Investments, Line Item [Member]
Long Term Investments, Line Item [Member]
Fair Value, Hierarchy [Axis]
Fair Value, Hierarchy [Axis]
Fair Value, Measurements, Fair Value Hierarchy [Domain]
Fair Value Hierarchy [Domain]
Level 1 [Member]
Fair Value, Inputs, Level 1 [Member]
Level 2 [Member]
Fair Value, Inputs, Level 2 [Member]
Level 3 [Member]
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]
Available-for-sale securities, Fair Value Disclosure
Available-for-sale Securities
Total Assets, Fair Value Disclosure
Assets, Fair Value Disclosure
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 Compensation Plan [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities (in shares)
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Weighted-average fair value per share granted (in dollars per share)
Shares issued under the ESPP (in shares)
Stock Issued During Period, Shares, Employee Stock Purchase Plans
Weighted-average price per share issued (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Issued, Weighted Average Price per Share
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Issued, Weighted Average Price per Share
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table]
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table]
Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Axis]
Exercise Price Range [Axis]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Domain]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Domain]
Range $19.94–19.94 [Member]
Range, 8.43 to 8.99 [Member]
Range, 8.43 to 8.99 [Member]
Range 20.13–24.92 [Member]
Range, 15.28 to 19.94 [Member]
Range, 15.28 to 19.94 [Member]
Range 26.49–26.70 [Member]
Range, 20.13 to 23.96 [Member]
Range, 20.13 to 24.96 [Member]
Range 31.39–33.31 [member]
Range, 26.49 to 26.70 [Member]
Range, 26.49 to 26.70 member [Member]
Range 36.70–48.83 [Member]
Range, 31.39 to 33.31 [Member]
Range, 31.39 to 33.31 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price, minimum (in dollars per share)
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Lower Range Limit
Exercise Price, maximum (in dollars per share)
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Upper Range Limit
Options Outstanding, Number Outstanding (in shares)
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Outstanding Options
Options Outstanding, Weighted Average Remaining Contractual Life (in years)
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Remaining Contractual Term
Options Outstanding, Weighted Average Exercise Price (in dollars per share)
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Exercise Price
Options Exercisable, Number Exercisable (in shares)
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options
Options Exercisable, Weighted Average Exercise Price (in dollars per share)
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Exercisable Options, Weighted Average Exercise Price
Valuation and Qualifying Accounts [Abstract]
Valuation and Qualifying Accounts Disclosure [Table]
Valuation and Qualifying Accounts Disclosure [Table]
Valuation Allowances and Reserves Type [Axis]
Valuation Allowances and Reserves Type [Axis]
Valuation Allowances and Reserves [Domain]
Valuation Allowances and Reserves [Domain]
Reserves for Sales Returns and Allowance for Doubtful Accounts [Member]
Allowance for Doubtful Accounts & Reserve for Sales Returns [Member]
Allowance for Doubtful Accounts & Reserve for Sales Returns [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Valuation and Qualifying Accounts Disclosure [Line Items]
Movement in Valuation Allowances and Reserves [Roll Forward]
Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance
Valuation Allowances and Reserves, Balance
Charged to costs and expenses, net of deductions
Valuation Allowances and Reserves, Additions for Charges to Cost and Expense
Ending balance
Fiscal Years:
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2018
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months
2019
Finite-Lived Intangible Assets, Amortization Expense, Year Two
2020
Finite-Lived Intangible Assets, Amortization Expense, Year Three
Total
Finite-Lived Intangible Assets, Net
Rent expense
Operating Leases, Rent Expense, Net
Inventory purchase commitments
Purchase Obligation
Other contractual commitments and open purchase orders
Other Commitment
Loss Contingencies [Table]
Loss Contingencies [Table]
Litigation Status [Axis]
Litigation Status [Axis]
Litigation Status [Domain]
Litigation Status [Domain]
Settled Litigation [Member]
Settled Litigation [Member]
Loss Contingencies [Line Items]
Loss Contingencies [Line Items]
Proceeds from legal settlement
Proceeds from Legal Settlements
Period of covenant not to sue
Loss Contingency, Amortization Period of Covenant Not to Sue
Loss Contingency, Amortization Period of Covenant Not to Sue
Proceeds from legal settlement used to offset contingent legal fees
Proceeds from Legal Settlement Used to Offset Contingent Legal Fees
Proceeds from Legal Settlement Used to Offset Contingent Legal Fees
Deferred proceeds from legal settlements
Proceeds from Legal Settlement, Deferred
Proceeds from Legal Settlement, Deferred
Inventory, Net [Abstract]
Raw materials
Inventory, Raw Materials, Net of Reserves
Finished goods
Inventory, Finished Goods, Net of Reserves
Inventory
Finished goods held by distributors
Inventory, Finished Goods, Net of Reserves, Held by Distributors
Inventory, Finished Goods, Net of Reserves, Held by Distributors
Materials at contract manufacturers
Inventory, Raw Materials, Net of Reserves, at Contract Manufacturers
Inventory, Raw Materials, Net of Reserves, at Contract Manufacturers
Schedule of Warranties [Table]
Schedule of Warranties [Table]
Schedule of Warranties [Table]
Products and Services [Axis]
Products and Services [Axis]
Products and Services [Domain]
Products and Services [Domain]
Hardware Products [Member]
Hardware, Product Warranty [Member]
Hardware, Product Warranty [Member]
Software Products [Member]
Software, Product Warranty [Member]
Software, Product Warranty
Warranties [Line Items]
Warranties [Line Items]
Warranties [Line Items]
Warranty length
Warranty Length
Warranty Length
Schedule of Related Party Transactions, by Related Party [Table]
Schedule of Related Party Transactions, by Related Party [Table]
Other Commitments [Axis]
Other Commitments [Axis]
Other Commitments [Domain]
Other Commitments [Domain]
Contingency Fee Arrangement [Member]
Contingency Fee Arrangement [Member]
Contingency Fee Arrangement [Member]
Related Party [Axis]
Related Party [Axis]
Related Party [Domain]
Related Party [Domain]
Law Firm where Board Member's Son is a Partner [Member]
Immediate Family Member of Management or Principal Owner [Member]
Related Party Transaction [Line Items]
Related Party Transaction [Line Items]
Expenses for legal services
Related Party Transaction, Expenses from Transactions with Related Party
Amounts due and payable to the law firm
Accounts Payable, Related Parties
Reserves for sales returns and doubtful accounts
Allowance For Doubtful Accounts Receivable and Sales Returns
Allowance For Doubtful Accounts Receivable and Sales Returns
Common Stock, par value (dollars per share)
Common Stock, Par or Stated Value Per Share
Common Stock, shares authorized
Common Stock, Shares Authorized
Common Stock, shares issued
Common Stock, Shares, Issued
Common Stock, shares outstanding
Common Stock, Shares, Outstanding
Developed Technologies [Member]
Technology-Based Intangible Assets [Member]
Customer Relationships [Member]
Customer Relationships [Member]
Other Intangible Assets [Member]
Other Intangible Assets [Member]
Trade Name [Member]
Trade Names [Member]
Estimated useful life
Fair values
Finite-lived Intangible Assets Acquired
Equity Award [Domain]
Schedule of Accumulated Other Comprehensive (Loss) Income
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest [Abstract]
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest [Abstract]
Domestic
Income (Loss) from Continuing Operations before Income Taxes, Domestic
Foreign
Income (Loss) from Continuing Operations before Income Taxes, Foreign
INCOME BEFORE INCOME TAXES
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Significant Accounting Policies [Text Block]
NET INCOME PER SHARE
Earnings Per Share [Text Block]
New Accounting Pronouncement, Early Adoption [Table]
New Accounting Pronouncement, Early Adoption [Table]
Adjustments for New Accounting Pronouncements [Axis]
Adjustments for New Accounting Pronouncements [Axis]
Type of Adoption [Domain]
Type of Adoption [Domain]
Accounting Standards Update 2016-02 [Member]
Accounting Standards Update 2016-02 [Member]
Accounting Standards Update 2014-09 [Member]
Accounting Standards Update 2014-09 [Member]
New Accounting Pronouncement, Early Adoption [Line Items]
New Accounting Pronouncement, Early Adoption [Line Items]
Stock-based compensation expense
Benefit from income taxes
Net income (loss)
Diluted (in dollars per share)
Diluted (in shares)
Deferred tax assets
Retained earnings
Expected increase to assets and liabilities upon adoption of new accounting pronouncement
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification
Operating Lease Commitments:
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Operating lease commitments, 2018
Operating Leases, Future Minimum Payments Due, Next Twelve Months
Operating lease commitments, 2019
Operating Leases, Future Minimum Payments, Due in Two Years
Operating lease commitments, 2020
Operating Leases, Future Minimum Payments, Due in Three Years
Operating lease commitments, 2021
Operating Leases, Future Minimum Payments, Due in Four Years
Operating lease commitments, 2022
Operating Leases, Future Minimum Payments, Due in Five Years
Operating lease commitments, Thereafter
Operating Leases, Future Minimum Payments, Due Thereafter
Operating lease commitments
Operating Leases, Future Minimum Payments Due
Inventory purchase commitments:
Purchase Obligation, Fiscal Year Maturity [Abstract]
Inventory purchase commitments, 2018
Purchase Obligation, Due in Next Twelve Months
Inventory purchase commitments, 2019
Purchase Obligation, Due in Second Year
Inventory purchase commitments, 2020
Purchase Obligation, Due in Third Year
Inventory purchase commitments, 2021
Purchase Obligation, Due in Fourth Year
Inventory purchase commitments, 2022
Purchase Obligation, Due in Fifth Year
Inventory purchase commitments, Thereafter
Purchase Obligation, Due after Fifth Year
Inventory purchase commitments
Other contractual commitments and open purchase orders:
Other Commitments [Abstract]
Contractual Obligation, 2018
Contractual Obligation, Due in Next Fiscal Year
Contractual Obligation, 2019
Contractual Obligation, Due in Second Year
Contractual Obligation, 2020
Contractual Obligation, Due in Third Year
Contractual Obligation, 2021
Contractual Obligation, Due in Fourth Year
Contractual Obligation, 2022
Contractual Obligation, Due in Fifth Year
Contractual Obligation, Thereafter
Contractual Obligation, Due after Fifth Year
Contractual Obligation
Contractual Obligation
FINANCIAL INSTRUMENTS AND FAIR VALUE
Financial Instruments Disclosure [Text Block]
DEI [Abstract]
DEI [Abstract]
Entity Registrant Name
Entity Registrant Name
Entity Central Index Key
Entity Central Index Key
Document Type
Document Type
Document Period End Date
Document Period End Date
Amendment Flag
Amendment Flag
Document Fiscal Year Focus
Document Fiscal Year Focus
Document Fiscal Period Focus
Document Fiscal Period Focus
Current Fiscal Year End Date
Current Fiscal Year End Date
Entity Current Reporting Status
Entity Current Reporting Status
Entity Filer Category
Entity Filer Category
Entity Well Known Seasoned Issuer
Entity Well-known Seasoned Issuer
Entity Voluntary Filers
Entity Voluntary Filers
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
Entity Public Float
Entity Public Float
In Process Research and Development [Member]
In Process Research and Development [Member]
Developed Technologies and Other [Member]
Developed Technology Rights [Member]
Weighted average useful life
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life
Finite-Lived Intangible Assets, Net [Abstract]
Finite-Lived Intangible Assets, Net [Abstract]
Gross
Finite-Lived Intangible Assets, Gross
Accumulated Amortization
Finite-Lived Intangible Assets, Accumulated Amortization
Indefinite-Lived Intangible Assets (Excluding Goodwill) [Abstract]
Indefinite-Lived Intangible Assets (Excluding Goodwill) [Abstract]
In-process research and development
Indefinite-Lived Intangible Assets (Excluding Goodwill)
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Gross
Intangible Assets, Gross (Excluding Goodwill)
Net
Amortization expense
Amortization of Intangible Assets
BUSINESS COMBINATIONS
Business Combination Disclosure [Text Block]
Excess tax benefits recognized in tax provision
Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefit, Amount
Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefit, Amount
Provisional expense on the remeasurement of deferred tax assets
Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Change in Tax Rate, Deferred Tax Asset, Provisional Income Tax Expense
Amount of reasonable estimate for income tax expense for remeasurement of deferred tax asset from change in tax rate pursuant to Tax Cuts and Jobs Act of 2017 for which accounting for tax effect is incomplete.
Expense for transition tax
Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Transition Tax for Accumulated Foreign Earnings, Provisional Income Tax Expense
Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Transition Tax for Accumulated Amount of reasonable estimate for income tax expense from transition tax on accumulated earnings of controlled foreign corporation deemed repatriated pursuant to Tax Cuts and Jobs Act of 2017 for which accounting for tax effect is incomplete.
Goodwill impairment
Goodwill, Impairment Loss
RESTRUCTURING CHARGES
Restructuring and Related Activities Disclosure [Text Block]
Consolidated Statements of Comprehensive Income [Abstract]
Consolidated Statements of Comprehensive Income [Abstract]
Other comprehensive income (loss):
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent [Abstract]
Change in unrealized gains (losses) on investments
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax
Tax provision (benefit) related to change in unrealized gains (losses) on investments
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent
Other comprehensive income (loss)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent
Comprehensive income
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Sales Returns Reserve [Member]
Allowance for Sales Returns [Member]
Allowance for Doubtful Accounts [Member]
Allowance for Doubtful Accounts [Member]
Reserve balance
Income Statement [Abstract]
REVENUE:
Revenue, Net [Abstract]
Product
Sales Revenue, Goods, Net
Service
Sales Revenue, Services, Net
Total revenue
COST OF REVENUE:
Cost of Goods and Services Sold [Abstract]
Product
Cost of Goods Sold
Service
Cost of Services
Total cost of revenue
Cost of Goods and Services Sold
GROSS PROFIT:
Gross Profit [Abstract]
Product
Product Gross Profit
Products Gross profit is the aggregate revenue less cost of goods sold directly attributable to the revenue generation activity.
Service
Services Gross Profit
Service Gross Profit is the aggregate revenue less cost of services sold or operating expenses directly attributable to the revenue generation activity.
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
OPERATING INCOME
Operating Income (Loss)
INTEREST INCOME
Investment Income, Net
OTHER INCOME (EXPENSE)—NET
Other Nonoperating Income (Expense)
PROVISION FOR INCOME TAXES
NET INCOME
Net income per share (Note 8):
Weighted-average shares outstanding:
Basic (in shares)
Statement of Cash Flows [Abstract]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Cash Provided by (Used in) Operating Activities [Abstract]
Adjustments to reconcile net income to net cash provided by operating activities:
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Depreciation and amortization
Depreciation, Depletion and Amortization
Amortization of investment premiums
Accretion (Amortization) of Discounts and Premiums, Investments
Stock-based compensation
Share-based Compensation
Other non-cash items—net
Other Noncash Income (Expense)
Changes in operating assets and liabilities, net of assets acquired and liabilities assumed in business acquisitions:
Increase (Decrease) in Other Operating Assets and Liabilities, Net [Abstract]
Accounts receivable—net
Increase (Decrease) in Accounts Receivable
Inventory
Increase (Decrease) in Inventories
Prepaid expenses and other current assets
Increase (Decrease) in Prepaid Expense and Other Assets
Deferred tax assets
Increase (Decrease) in Deferred Income Taxes
Other assets
Increase (Decrease) in Other Operating Assets
Accounts payable
Increase (Decrease) in Accounts Payable
Accrued liabilities
Increase (Decrease) in Accrued Liabilities
Accrued payroll and compensation
Increase (Decrease) in Employee Related Liabilities
Other liabilities
Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities
Deferred revenue
Increase (Decrease) in Deferred Revenue
Income taxes payable
Increase (Decrease) in Income Taxes Payable
Net cash provided by operating activities
Net Cash Provided by (Used in) Operating Activities
CASH FLOWS FROM INVESTING ACTIVITIES:
Net Cash Provided by (Used in) Investing Activities [Abstract]
Purchases of investments
Payments to Acquire Investments
Sales of investments
Proceeds from Sale of Available-for-sale Securities
Maturities of investments
Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities
Purchases of property and equipment
Payments made in connection with business acquisitions, 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 and retirement of common stock
Payments for Repurchase of Common Stock
Proceeds from issuance of common stock
Proceeds from Issuance of Common Stock
Taxes paid related to net share settlement of equity awards
Payments of debt assumed in connection with business acquisition
Repayments of Assumed Debt
Net cash used in financing activities
Net Cash Provided by (Used in) Financing Activities
NET INCREASE IN CASH AND CASH EQUIVALENTS
Cash and Cash Equivalents, Period Increase (Decrease)
CASH AND CASH EQUIVALENTS—Beginning of year
CASH AND CASH EQUIVALENTS—End of year
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Supplemental Cash Flow Information [Abstract]
Cash paid for income taxes—net
Income Taxes Paid, Net
NON-CASH INVESTING AND FINANCING ACTIVITIES:
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Transfers of evaluation units from inventory to property and equipment
Transfers of Evaluation Units from Inventory to Property and Equipment
Transfers of Evaluation Units from Inventory to Property and Equipment
Liability for purchase of property and equipment and asset retirement obligations
Capital Expenditures Incurred but Not yet Paid
Equity awards assumed in connection with business acquisition
Business Acquisition, Equity Awards Assumed
Business Acquisition, Equity Awards Assumed
Schedule of Income before Income Tax, Domestic and Foreign
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]
Schedule of Components of Income Tax Expense (Benefit)
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Schedule of Effective Income Tax Rate Reconciliation
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Schedule of Deferred Tax Assets and Liabilities
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Schedule of Aggregate Changes in Unrecognized Tax Benefits
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]
Schedule II Valuation and Qualifying Accounts
Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]
Schedule of Purchase Price Allocation
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]
Schedule of Acquired Intangible Assets
Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block]
Derivative [Table]
Derivative [Table]
Position [Axis]
Position [Axis]
Position [Domain]
Position [Domain]
Sell
Short [Member]
Currency [Axis]
Currency [Axis]
All Currencies [Domain]
All Currencies [Domain]
CAD
Canada, Dollars
Derivative [Line Items]
Derivative [Line Items]
Notional amount of forward exchange contracts
Derivative, Notional Amount
Basis of Presentation and Preparation
Presentation and Preparation of Consolidated Financial Statements [Policy Text Block]
Presentation and Preparation of Consolidated Financial Statements [Policy Text Block]
Use of Estimates
Use of Estimates, Policy [Policy Text Block]
Concentration of Credit Risk
Concentration Risk [Policy Text Block]
Concentration Risk [Policy Text Block]
Financial Instruments and Fair Value
Fair Value of Financial Instruments, Policy [Policy Text Block]
Comprehensive Income
Comprehensive Income Loss [Policy Text Block]
Comprehensive Income Loss [Policy Text Block]
Foreign Currency and Transaction Gains and Losses
Foreign Currency Transactions and Translations Policy [Policy Text Block]
Cash, Cash Equivalents and Available-for-sale Investments
Cash and Cash Equivalents and Available-for-Sale Investments [Policy Text Block]
Cash and Cash Equivalents and Available-for-Sale Investments [Policy Text Block]
Inventory
Inventory, Policy [Policy Text Block]
Property and Equipment
Property, Plant and Equipment, Policy [Policy Text Block]
Other Investments
Cost Method Investments, Policy [Policy Text Block]
Consolidation of Variable Interest Entities
Consolidation, Variable Interest Entity, Policy [Policy Text Block]
Business Combinations
Business Combinations Policy [Policy Text Block]
Impairment of Long-Lived Assets
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]
Restructuring
Costs Associated with Exit or Disposal Activities or Restructurings, Policy [Policy Text Block]
Goodwill
Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]
Other Intangible Assets
Intangible Assets, Finite-Lived, Policy [Policy Text Block]
Deferred Revenue
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]
Leases
Lessee, Leases [Policy Text Block]
Advertising Expense
Advertising Cost, Policy, Expensed Advertising Cost [Policy Text Block]
Research and Development Costs
Research and Development Expense, Policy [Policy Text Block]
Software Development Costs
Software to be Sold, Leased, or Otherwise Marketed, Policy [Policy Text Block]
Revenue Recognition
Revenue Recognition, Policy [Policy Text Block]
Shipping and Handling
Shipping and Handling Cost, Policy [Policy Text Block]
Accounts Receivable
Trade and Other Accounts Receivable, Policy [Policy Text Block]
Warranties
Standard Product Warranty, Policy [Policy Text Block]
Foreign Currency Derivatives
Derivatives, Methods of Accounting, Hedging Derivatives [Policy Text Block]
Recently Adopted Accounting Standards and Recent Accounting Standards Not Yet Effective
New Accounting Pronouncements, Policy [Policy Text Block]
Property and equipment, useful life
Property, Plant and Equipment, Useful Life
Schedule of Earnings Per Share, Basic and Diluted
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
Number of reporting units
Number of Reporting Units
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, Shares Withheld for Taxes
Schedule of Share-based Compensation, Shares Withheld for Taxes [Table Text Block]
Schedule of Share-based Compensation, Shares Withheld for Taxes [Table Text Block]
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions And Allocation of Recognized Period Costs [Table Text Block]
Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed.
Schedule of Share-based Compensation, Stock Options, Activity
Share-based Compensation, Stock Options, Activity [Table Text Block]
Schedule of Share-based Compensation, Stock Options, Activity, Additional Information
Schedule of Share-based Compensation, Stock Options, Activity, Additional Information [Table Text Block]
Schedule of Share-based Compensation, Stock Options, Activity, Additional Information
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]
Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions
Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block]
Schedule of Share-based Payment Award Employee Stock Purchase Plan Additional Information
Schedule of Share based Payment Award Employee Stock Purchase Plan Additional Information [Table Text Block]
Schedule of Share based Payment Award Employee Stock Purchase Plan Additional Information [Table Text Block]
Schedule of Shares Reserved for Future Issuance
Schedule of Shares Reserved for Future Issuance [Table Text Block]
Schedule of Shares Reserved for Future Issuance [Table Text Block]
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]
Schedule of Employee Service Share based Compensation Allocation of Recognized Period Costs by Award Type
Schedule of Employee Service Share based Compensation Allocation of Recognized Period Costs by Award Type [Table Text Block]
Schedule of Employee Service Share based Compensation Allocation of Recognized Period Costs by Award Type [Table Text Block]
Income Tax Benefit from Stock Option Plans
Income Tax Benefit from Stock Option Plans [Table Text Block]
Income Tax Benefit from Stock Option Plans [Table Text Block]