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United States UNITED STATES Changes in operating assets and liabilities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Issuance of common stock upon exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Schedule of Finite-Lived Intangible Assets, Future Amortization Expense Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Accumulated Deficit Retained Earnings [Member] Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Outstanding RSUs Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Schedule of Cash Equivalents and Marketable Securities Cash And Cash Equivalents And Debt Securities, Available-For-Sale, Amortized Cost To Fair Value [Table Text Block] Tabular disclosure of cash and cash equivalents and debt securities available-for-sale amortized cost to fair value. 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Berquist [Member] Thomas P. Berquist Jeffrey P. Hank [Member] Jeffrey P. 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Number of reportable segments Number of Reportable Segments Other Performance Measure, Amount Other Performance Measure, Amount Weighted Average Exercise Price Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Entity Address, State or Province Entity Address, State or Province Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Security, Excluded EPS Calculation [Table] Unrealized losses before tax Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months Total assets Financial Instruments, Owned, at Fair Value Total current liabilities Liabilities, Current Derivative Instrument [Axis] Derivative Instrument [Axis] Individual: Individual [Axis] Total property and equipment Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, before Accumulated Depreciation and Amortization Net income per share: Earnings Per Share Reconciliation [Abstract] Research and development Research and Development Expense [Member] Net cash used in investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Remaining performance obligation, period Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Sumedh S. Thakar [Member] Sumedh S. Thakar Fair Value Debt Securities, Held-to-Maturity, Fair Value [Abstract] Document Fiscal Year Focus Document Fiscal Year Focus Asset-backed securities Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Amortized Cost Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Stockholders' Equity and Stock-based Compensation Shareholders' Equity and Share-Based Payments [Text Block] Operating leases - right of use asset Operating Lease, Right-of-Use Asset Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Scanner appliances Scanner Appliances [Member] Represents information related to scanner appliances. Income tax rate (as a percent) Effective Income Tax Rate Reconciliation, Percent Entity Interactive Data Current Entity Interactive Data Current Plan Name [Domain] Plan Name [Domain] The 2012 Equity Incentive Plan The 2012 Equity Incentive Plan [Member] Represents plan 2012. Stock-based compensation, recognition period (in years) Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Issuance of common stock upon exercise of stock options (in shares) Exercised (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Equity [Abstract] Scanner Appliances and Other Computer Equipment Scanner Appliances and Other Computer Equipment Subject To Subscription [Member] Represents information related to scanner appliances and other computer equipment subject to subscription. Segment and Geographic Area Information Segment Reporting Disclosure [Text Block] Not Designated as Hedging Instrument Foreign currency forward contracts not designated as hedging instruments Not Designated as Hedging Instrument [Member] Long-Lived Tangible Asset [Axis] Long-Lived Tangible Asset [Axis] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Shares that will vest upon trigger (as a percent) Share-based Compensation Percentage Of Shares That Will Vest Upon Trigger Represents percentage of shares that will vest upon trigger for share-based compensation. Number of installments Share-Based Compensation Arrangement by Share-Based Payment Award, Vesting, Number of Installments Share-Based Compensation Arrangement by Share-Based Payment Award, Vesting, Number of Installments Net change in unrealized gains (losses) on cash flow hedges, net of tax Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Accumulated Other Comprehensive Income (Loss) Comprehensive Income (Loss) Note [Text Block] Intangible asset amortization expense Less: Amortization of intangible assets Amortization of Intangible Assets Deferred tax assets, net Deferred Income Tax Assets, Net Executive Officer 2 Executive Officer 2 [Member] Represents executive officer 2. Schedule of Accumulated Other Comprehensive Income (Loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Depreciation and amortization expense Depreciation, Depletion and Amortization Other noncurrent assets Other Assets, Noncurrent Entity Central Index Key Entity Central Index Key PEO Name PEO Name Schedule of Revenues from External Customers and Long-Lived Assets [Table] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Scanner Appliances and Other Computer Equipment Not Placed in Service Scanner Appliances and Other Computer Equipment Not Placed In Service [Member] Represents scanner appliances and other computer equipment not placed in service. Arrangement Duration Trading Arrangement Duration Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Computer equipment Computer Equipment [Member] Deferred revenues, current Contract with Customer, Liability, Current Segments [Axis] Segments [Axis] Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Local Phone Number Local Phone Number Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Repurchase of common stock (in shares) Repurchase of common stock (in shares) Stock Repurchased and Retired During Period, Shares Assets Assets [Abstract] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Outstanding and expected to vest (in USD per share) Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Expected To Vest, Weighted Average Grant Date Fair Value Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Expected To Vest, Weighted Average Grant Date Fair Value Reclassification of AOCI - Cash flow hedges AOCI Attributable to Parent [Abstract] Forfeited (in USD per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Fair Value of Financial Instruments Fair Value Disclosures [Text Block] Cost Finite-Lived Intangible Assets, Gross Stockholders’ equity: Equity, Attributable to Parent [Abstract] Executive Officer Executive Officer [Member] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Entity Address, Address Line One Entity Address, Address Line One Research and development Research and development Research and development (exclusive of stock-based compensation and amortization of intangible assets) Research and Development Expense Accumulated Other Comprehensive Income (Loss) Total AOCI Attributable to Parent [Member] Accrued liabilities and other noncurrent liabilities Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities Taxes related to net share settlement of equity awards (in shares) Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation Operating lease liabilities, noncurrent Operating Lease, Liability, Noncurrent Net gains (losses) from non-designated forward contracts Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments Fair Value as of Grant Date Award Grant Date Fair Value Carrying value of accounts receivable Accounts Receivable, after Allowance for Credit Loss Foreign Exchange Contracts for INR Foreign Exchange Contracts for INR [Member] Foreign Exchange Contracts for INR Property, Plant and Equipment [Abstract] Entity Registrant Name Entity Registrant Name Executive Officer 4 Executive Officer 4 [Member] Represents executive 4. 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