Subsequent Events [Abstract]
SUBSEQUENT EVENT
Subsequent Events [Text Block]
Other Comprehensive Income (Loss), Net of Tax [Abstract]
ACCUMULATED OTHER COMPREHENSIVE LOSS
Comprehensive Income (Loss) Note [Text Block]
Accounting Policies [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Significant Accounting Policies [Text Block]
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
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
Schedule of 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 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 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]
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]
Award Type [Axis]
Award Type [Axis]
Award Type [Domain]
Equity Award [Domain]
Restricted Stock Units (RSUs) [Member]
Restricted Stock Units (RSUs) [Member]
Stock Options [Member]
Employee Stock Option [Member]
ESPP [Member]
Employee Stock [Member]
Income Statement Location [Axis]
Income Statement Location [Axis]
Income Statement Location [Domain]
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 Realized from Exercise of Stock Options
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
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 $11,685 and $11,235 at March 31, 2017 and December 31, 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
DEFERRED TAX ASSETS
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent
PROPERTY AND EQUIPMENT—NET
Property, Plant and Equipment, Net
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 9)
Commitments and Contingencies
STOCKHOLDERS’ EQUITY:
Stockholders' Equity Attributable to Parent [Abstract]
Common stock, $0.001 par value—300,000 shares authorized; 175,443 and 173,078 shares issued and outstanding at March 31, 2017 and December 31, 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
Retained Earnings (Accumulated Deficit)
Total stockholders’ equity
Stockholders' Equity Attributable to Parent
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY
Liabilities and Equity
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment [Table]
Schedule of Segment Reporting Information, by Segment [Table]
Customer [Axis]
Customer [Axis]
Customer [Domain]
Customer [Domain]
Exclusive Networks Group
Exclusive Networks Group [Member]
Exclusive Networks Group [Member]
Fin Tec Computers
Fin Tec Computers [Member]
Fin Tec Computers [Member]
Concentration Risk Type [Axis]
Concentration Risk Type [Axis]
Concentration Risk Type [Domain]
Concentration Risk Type [Domain]
Customer Concentration Risk
Customer Concentration Risk [Member]
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark [Domain]
Concentration Risk Benchmark [Domain]
Sales Revenue
Sales Revenue, Net [Member]
Accounts Receivable
Accounts Receivable [Member]
Statement, Geographical [Axis]
Geographical [Axis]
Segment, Geographical [Domain]
Geographical [Domain]
Total Americas
Americas [Member]
U.S.
UNITED STATES
CANADA
CANADA
Latin America (“LATAM”)
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]
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
Customer concentration (percent)
Concentration Risk, Percentage
Property, Plant and Equipment [Abstract]
PROPERTY AND EQUIPMENT—Net
Property, Plant and Equipment Disclosure [Text Block]
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
Statement of Comprehensive Income [Abstract]
Net income
Net Income (Loss) Attributable to Parent
Other comprehensive income:
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent [Abstract]
Change in unrealized loss on investments
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax
Tax provision related to change in unrealized loss on investments
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent
Other comprehensive income—net of taxes
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent
Comprehensive income
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Schedule of Accumulated Other Comprehensive (Loss) Income
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill
Goodwill impairment
Goodwill, Impairment Loss
Compensation and Retirement Disclosure [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
Investments, All Other Investments [Abstract]
INVESTMENTS IN PRIVATELY-HELD COMPANIES
Cost-method Investments, Description [Text Block]
Income Tax Disclosure [Abstract]
INCOME TAXES
Income Tax Disclosure [Text Block]
Related Party Transactions [Abstract]
RELATED PARTY TRANSACTIONS
Related Party Transactions Disclosure [Text Block]
Income Tax Contingency [Table]
Income Tax Contingency [Table]
Balance Sheet Location [Axis]
Balance Sheet Location [Axis]
Balance Sheet Location [Domain]
Balance Sheet Location [Domain]
Income Tax Contingency [Line Items]
Income Tax Contingency [Line Items]
Effective tax rate (percent)
Effective Income Tax Rate Reconciliation, Percent
Excess tax benefits from stock options
Effective Income Tax Reconciliation, Excess Tax Benefit on Stock-based Compensation
Effective Income Tax Reconciliation, Excess Tax Benefit on Stock-based Compensation
Unrecognized tax benefits, end of year
Unrecognized Tax Benefits
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
Unrecognized tax benefits subject to significant change over next 12 months
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit
Commitments and Contingencies Disclosure [Abstract]
Contractual Obligation, Fiscal Year Maturity Schedule
Contractual Obligation, Fiscal Year Maturity Schedule [Table Text Block]
DEFINED CONTRIBUTION PLANS
Compensation and Employee Benefit Plans [Text Block]
GOODWILL AND OTHER INTANGIBLE ASSETS - Net
Goodwill and Intangible Assets Disclosure [Text Block]
Accumulated Other Comprehensive (Loss) Income [Table]
Accumulated Other Comprehensive Income (Loss) [Table]
Equity Components [Axis]
Equity Components [Axis]
Equity Component [Domain]
Equity Component [Domain]
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 income 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 income
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 loss, 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
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
Restructuring charges
Restructuring Charges
Total operating expenses
Operating Expenses
OPERATING INCOME (LOSS)
Operating Income (Loss)
INTEREST INCOME
Investment Income, Net
OTHER INCOME (EXPENSE)—NET
Other Nonoperating Income (Expense)
INCOME (LOSS) BEFORE INCOME TAXES
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest
BENEFIT FROM INCOME TAXES
Income Tax Expense (Benefit)
NET INCOME
Net income per share (Note 7):
Earnings Per Share [Abstract]
Basic (in dollars per share)
Earnings Per Share, Basic
Diluted (in dollars per share)
Earnings Per Share, Diluted
Weighted-average shares outstanding:
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Basic (in shares)
Weighted Average Number of Shares Outstanding, Basic
Diluted (in shares)
Weighted Average Number of Shares Outstanding, Diluted
2017 (remainder)
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months
2018
Finite-Lived Intangible Assets, Amortization Expense, Year Two
2019
Finite-Lived Intangible Assets, Amortization Expense, Year Three
2020
Finite-Lived Intangible Assets, Amortization Expense, Year Four
Total
Finite-Lived Intangible Assets, Net
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Employee Stock Purchase Plan [Member]
Employee Stock Purchase Plan [Member]
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average fair value per share granted (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
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
Revenue and Accounts Receivable 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]
Investments in equity securities of privately-held companies
Cost Method Investments, Original Cost
Schedule of Goodwill
Schedule of Goodwill [Table Text Block]
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]
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)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period
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
Granted, weighted-average grant-date fair value per share (in dollars per share)
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
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
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
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
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
Immediate Family Member of Management or Principal Owner [Member]
Related Party Transaction [Line Items]
Related Party Transaction [Line Items]
Related-party expenses incurred
Related Party Transaction, Expenses from Transactions with Related Party
Amounts due and payable to the law firm
Accounts Payable, Related Parties
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
Loss Contingencies [Table]
Loss Contingencies [Table]
Commitment to Purchase Certain Real Estate Properties
Commitment to Purchase Certain Real Estate Properties [Member]
Commitment to Purchase Certain Real Estate Properties [Member]
Loss Contingency Nature [Axis]
Loss Contingency Nature [Axis]
Loss Contingency, Nature [Domain]
Loss Contingency, Nature [Domain]
Indemnification Provisions [Member]
Indemnification Agreement [Member]
Commitment
Loss Contingencies [Line Items]
Rent expense
Operating Leases, Rent Expense, Net
Inventory purchase commitments
Purchase Obligation
Other contractual commitments and open purchase orders
Other Commitment
Awards under indemnification provisions
Loss Contingency, Damages Sought, Value
Inventory Disclosure [Abstract]
Inventory, Net [Abstract]
Raw materials
Inventory, Raw Materials, Net of Reserves
Finished goods
Inventory, Finished Goods, Net of Reserves
Inventory
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]
Land [Member]
Land [Member]
Building and building improvements [Member]
Building and Building Improvements [Member]
Computer equipment and software [Member]
Computer Equipment [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]
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
Restructuring and Related Activities [Abstract]
Summary of Restructuring Activity
Restructuring and Related Costs [Table Text Block]
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]
Schedule of Finite-Lived Intangible Assets by Major Class [Table]
Schedule of Finite-Lived Intangible Assets [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]
In Process Research and Development [Member]
In Process Research and Development [Member]
Finite-Lived Intangible Assets by Major Class [Axis]
Finite-Lived Intangible Assets by Major Class [Axis]
Finite-Lived Intangible Assets, Major Class Name [Domain]
Finite-Lived Intangible Assets, Major Class Name [Domain]
Developed Technologies and Other [Member]
Developed Technology Rights [Member]
Customer Relationships [Member]
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets [Line Items]
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
COMMITMENTS AND CONTINGENCIES
Commitments and Contingencies Disclosure [Text Block]
Financial Instruments and Fair Value [Abstract]
Financial Instruments and Fair Value [Abstract]
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]
Operating Lease Commitments:
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Operating lease commitments, 2017 (remainder)
Operating Leases, Future Minimum Payments, Remainder of Fiscal Year
Operating lease commitments, 2018
Operating Leases, Future Minimum Payments, Due in Two Years
Operating lease commitments, 2019
Operating Leases, Future Minimum Payments, Due in Three Years
Operating lease commitments, 2020
Operating Leases, Future Minimum Payments, Due in Four Years
Operating lease commitments, 2021
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, 2017 (remainder)
Purchase Obligation, Future Minimum Payments, Remainder of Fiscal Year
Inventory purchase commitments, 2018
Purchase Obligation, Due in Second Year
Inventory purchase commitments, 2019
Purchase Obligation, Due in Third Year
Inventory purchase commitments, 2020
Purchase Obligation, Due in Fourth Year
Inventory purchase commitments, 2021
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]
Other contractual commitments and open purchase orders, 2017 (remainder)
Other Commitments, Future Minimum Payments, Remainder of Fiscal Year
Other contractual commitments and open purchase orders, 2018
Other Commitment, Due in Second Year
Other contractual commitments and open purchase orders, 2019
Other Commitment, Due in Third Year
Other contractual commitments and open purchase orders, 2020
Other Commitment, Due in Fourth Year
Other contractual commitments and open purchase orders, 2021
Other Commitment, Due in Fifth Year
Other contractual commitments and open purchase orders, Thereafter
Other Commitment, Due after Fifth Year
Other contractual commitments and open purchase orders
Contractual Obligation
Contractual Obligation
Contractual Obligation, 2017 (remainder)
Contractual Obligation, Future Minimum Payments Due, Remainder of Fiscal Year
Contractual Obligation, 2018
Contractual Obligation, Due in Second Year
Contractual Obligation, 2019
Contractual Obligation, Due in Third Year
Contractual Obligation, 2020
Contractual Obligation, Due in Fourth Year
Contractual Obligation, 2021
Contractual Obligation, Due in Fifth Year
Contractual Obligation, Thereafter
Contractual Obligation, Due after Fifth Year
Share Repurchase Program [Axis]
Share Repurchase Program [Axis]
Share Repurchase Program [Domain]
Share Repurchase Program [Domain]
Share Repurchase Program [Member]
Share Repurchase Program [Member]
Share Repurchase Program [Member]
Stock-based Compensation Plan [Member]
Stock Compensation Plan [Member]
Stock repurchase program, remaining repurchase amount
Stock Repurchase Program, Remaining Authorized Repurchase Amount
Remaining shares available for grant under the plans
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant
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
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number
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]
Municipal bonds [Member]
US States and Political Subdivisions Debt Securities [Member]
Certificates of deposit and term deposits [Member]
Certificates of Deposit [Member]
U.S. government and agency securities [Member]
US Treasury and Government [Member]
Commercial paper [Member]
Commercial Paper, Not Included with Cash and Cash Equivalents [Member]
Schedule of Available-for-sale Securities [Line Items]
Schedule of Available-for-sale Securities [Line Items]
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
NET INCOME PER SHARE
Earnings Per Share [Text Block]
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
Title of Individual [Axis]
Title of Individual [Axis]
Relationship to Entity [Domain]
Relationship to Entity [Domain]
Vesting [Axis]
Vesting [Axis]
Vesting [Domain]
Vesting [Domain]
Performance Share, Weighted Average Assumptions [Abstract]
Performance Share, Weighted Average Assumptions [Abstract]
Performance Share, Weighted Average Assumptions [Abstract]
Granted (shares)
Inventory
Schedule of Inventory, Current [Table Text Block]
Fair Value Measurements, Recurring and Nonrecurring [Table]
Fair Value Measurements, Recurring and Nonrecurring [Table]
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]
Measurement Frequency [Axis]
Measurement Frequency [Axis]
Fair Value, Measurement Frequency [Domain]
Fair Value, Measurement Frequency [Domain]
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]
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
Balance, beginning
Restructuring Reserve
Costs incurred
Cash payments
Payments for Restructuring
Non-cash items
Restructuring Reserve, Settled without Cash
Balance, ending
INVENTORY
Inventory Disclosure [Text Block]
New Accounting Pronouncement, Early Adoption [Table]
New Accounting Pronouncement, Early Adoption [Table]
Pro Forma [Member]
Pro Forma [Member]
New Accounting Pronouncement, Early Adoption [Axis]
New Accounting Pronouncement, Early Adoption [Axis]
New Accounting Principles, Early Adoption [Domain]
New Accounting Principles, Early Adoption [Domain]
Accounting Standards Update 2016-02 [Member]
Accounting Standards Update 2016-02 [Member]
Accounting Standards Update 2016-02 [Member]
New Accounting Pronouncement, Early Adoption [Line Items]
New Accounting Pronouncement, Early Adoption [Line Items]
Expected increase to assets and liabilities upon adoption of new accounting pronouncement
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification
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]
Recently Adopted Accounting Standards and Recent Accounting Standards Not Yet Effective
New Accounting Pronouncements, Policy [Policy Text Block]
Subsequent Event [Table]
Subsequent Event [Table]
Subsequent Event Type [Axis]
Subsequent Event Type [Axis]
Subsequent Event Type [Domain]
Subsequent Event Type [Domain]
Subsequent Event
Subsequent Event [Member]
Subsequent Event [Line Items]
Subsequent Event [Line Items]
Area of real estate purchased (in sq. ft)
Area of Real Estate Property
Cash payment to acquire real estate
Payments to Acquire Real Estate
Fair Value Disclosures [Abstract]
Fair Value, by Balance Sheet Grouping [Table]
Fair Value, by Balance Sheet Grouping [Table]
Income Statement Location [Axis]
Income Statement Location [Domain]
Business Acquisition [Axis]
Business Acquisition [Axis]
Business Acquisition, Acquiree [Domain]
Business Acquisition, Acquiree [Domain]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
2016 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 repurchase program, unused balance
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:
Increase (Decrease) in Other Operating Assets and Liabilities, Net [Abstract]
Accounts receivable—net
Increase (Decrease) in Accounts Receivable
Inventory
Increase (Decrease) in Inventories
Deferred tax assets
Increase (Decrease) in Deferred Income Taxes
Prepaid expenses and other current assets
Increase (Decrease) in Prepaid Expense and Other Assets
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 to Acquire Productive Assets
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
Proceeds from Issuance of Common Stock
Taxes paid related to net share settlement of equity awards
Repurchase and retirement of common stock
Payments for Repurchase of Common Stock
Net cash provided by (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 period
CASH AND CASH EQUIVALENTS—End of period
NON-CASH INVESTING AND FINANCING ACTIVITIES:
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Liability for purchase of property and equipment
Capital Expenditures Incurred but Not yet Paid
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
Property, Plant and Equipment - Net
Property, Plant and Equipment [Table Text Block]
SEGMENT INFORMATION
Segment Reporting Disclosure [Text Block]
STOCKHOLDERS' EQUITY
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]
FINANCIAL INSTRUMENTS AND FAIR VALUE
Financial Instruments Disclosure [Text Block]
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)
Diluted shares:
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)
Diluted (in dollars per share)
RESTRUCTURING CHARGES
Restructuring and Related Activities Disclosure [Text Block]