Related Party Transactions [Abstract]
Related Party Transactions
Related Party Transactions Disclosure [Text Block]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature Of Business
Nature of Operations [Text Block]
Income Tax Disclosure [Abstract]
Domestic
Income (Loss) from Continuing Operations before Income Taxes, Domestic
International
Income (Loss) from Continuing Operations before Income Taxes, Foreign
Total income before income tax provision
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest
Basis Of Presentation And Significant Accounting Policies [Table]
Basis of Presentation and Significant Accounting Policies [Table]
Basis of Presentation and Significant Accounting Policies [Table]
Initial Application Period Cumulative Effect Transition [Axis]
Initial Application Period Cumulative Effect Transition [Axis]
Initial Application Period Cumulative Effect Transition [Axis]
Initial Application Period Cumulative Effect Transition [Domain]
Initial Application Period Cumulative Effect Transition [Domain]
[Domain] for Initial Application Period Cumulative Effect Transition [Axis]
Difference between Revenue Guidance in Effect before and after Topic 606
Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Adjustments for New Accounting Pronouncements [Axis]
Adjustments for New Accounting Pronouncements [Axis]
Type of Adoption [Domain]
Type of Adoption [Domain]
Accounting Standards Update 2014-09
Accounting Standards Update 2014-09 [Member]
Range [Axis]
Range [Axis]
Range [Domain]
Range [Domain]
Weighted Average
Weighted Average [Member]
Maximum
Maximum [Member]
Minimum
Minimum [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]
Patents
Patents [Member]
Internal-use software
Software Development [Member]
Major Customers [Axis]
Customer [Axis]
Name of Major Customer [Domain]
Customer [Domain]
Client One
Client One [Member]
Client One [Member]
Client Two
Client Two [Member]
Client Two [Member]
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark [Domain]
Concentration Risk Benchmark [Domain]
Accounts receivable
Accounts Receivable [Member]
Sales Revenue, Subscription Fee
Sales Revenue, Subscription Fee [Member]
Sales Revenue, Subscription Fee
Basis of Presentation and Significant Accounting Polcies [Line Items]
Basis of Presentation and Significant Accounting Policies [Line Items]
Basis of Presentation and Significant Accounting Policies [Line Items]
Gain (Loss) on Sale of Investments
Gain (Loss) on Sale of Investments
Impairment losses
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net
Revenue
Revenues
BESP 5pct of Revenue
BESP 5pct of Revenue
Customer revenue of 5% used in BESP calculation
Allowance for doubtful accounts receivable
Allowance for Doubtful Accounts Receivable
Number of significant clients
Number of Significant Clients
Number of Significant Clients
Concentration of credit risk, percentage
Concentration Risk, Percentage
Other-than-temporary impairment loss on investments
Other than Temporary Impairment Losses, Investments
Useful life of property, plant and equipment
Property, Plant and Equipment, Useful Life
Patent assets, useful life
Finite-Lived Intangible Asset, Useful Life
Capitalization of internal-use sofware and website development costs
Capitalized Computer Software, Additions
Amortization of internal-use sofware and website development costs
Capitalized Computer Software, Amortization
Goodwill impairment loss
Goodwill, Impairment Loss
Pre-tax non-cash impairment loss
Other Asset Impairment Charges
Fair value of cost method investments
Cost Method Investments, Fair Value Disclosure
Valuation allowance
Deferred Tax Assets, Valuation Allowance
Cost of revenue
Cost of Revenue
Selling, general and administrative expenses
Selling, General and Administrative Expense
Equity [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]
Award Type [Axis]
Award Type [Axis]
Award Type [Domain]
Equity Award [Domain]
Vested and exercisable
Vestedand Exercisable [Member]
Vested and expected to vest
Vestedand Expectedto Vest [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant
Outstanding (in shares)
Outstanding (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number
Outstanding (in shares)
Outstanding (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price
Outstanding (in dollars per share)
Shares authorized (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized
Options exercised (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period
Options exercised (in dollars per share)
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price
Options forfeited (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period
Options forfeited (in shares)
Options forfeited (in dollars per share)
Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price
Restricted stock units granted (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period
Restricted stock units forfeited (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period
Outstanding (weighted-average contractual life)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term
Outstanding (intrinsic value)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value
Vested and exercisable (shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number
Vested and exercisable (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price
Vested and exercisable (weighted-average contractual life)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term
Vested and exercisable (intrinsic value)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value
Vested and expected to vest (shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number
Vested and expected to vest (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price
Vested and expected to vest (weighted-average contractual life)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term
Vested and expected to vest (intrinsic value)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value
Commitments and Contingencies Disclosure [Abstract]
Area of real estate property (in square feet)
Area of Real Estate Property
Reduction in area of real estate property (in square feet)
Reduction in Area of Leased Real Estate
Reduction in Area of Leased Real Estate
Reduction of future operating lease commitments
Increase (Decrease) in Future Operating Lease Commitments
Increase (Decrease) in Future Operating Lease Commitments
Estimated litigation liability
Estimated Litigation Liability
Reserves for known and incurred but not reported claims
Liability for Unpaid Claims and Claims Adjustment Expense, Incurred but Not Reported (IBNR) Claims, Amount
Operating Leases, Rent Expense, Net [Abstract]
Operating Leases, Rent Expense, Net [Abstract]
Rent expense
Operating Leases, Rent Expense
Sublease income
Operating Leases, Rent Expense, Sublease Rentals
Rent expense, net of sublease income
Operating Leases, Rent Expense, Net
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table]
Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table]
Proprietary data and models
Proprietary Business Processes [Member]
Trademarks
Trademarks [Member]
Developed technology
Developed Technology Rights [Member]
Customer relationships
Customer Relationships [Member]
Covenant not to compete
Noncompete Agreements [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life
Carrying amount
Finite-Lived Intangible Assets, Gross
Accumulated amortization
Finite-Lived Intangible Assets, Accumulated Amortization
Net carrying amount
Finite-Lived Intangible Assets, Net
Quarterly Financial Information Disclosure [Abstract]
Impairment losses
Asset Impairment Charges
Operating income (loss)
Operating Income (Loss)
Interest and other income (expense), net
Other Nonoperating Income (Expense)
Income (loss) before provision for income taxes
Provision for income taxes
Income Tax Expense (Benefit)
Net income (loss)
Net Income (Loss) Attributable to Parent
Net income available to common stockholders per common share(1):
Net income per common share: [Abstract]
Basic (USD per share)
Earnings Per Share, Basic
Diluted (USD per share)
Earnings Per Share, Diluted
Other Data:
Quarterly Financial Data [Abstract]
Deferred revenue, including current portion
Deferred Revenue
Stock-based compensation expense
Allocated Share-based Compensation Expense
Income Taxes
Income Tax Disclosure [Text Block]
Stockholder's Equity
Stockholders' Equity Note Disclosure [Text Block]
Statement of Financial Position [Abstract]
Common stock, par value per share (in dollars per share)
Common Stock, Par or Stated Value Per Share
Common stock authorized (in shares)
Common Stock, Shares Authorized
Common stock issued (in shares)
Common Stock, Shares, Issued
Common stock outstanding (in shares)
Common Stock, Shares, Outstanding
Preferred stock par value per share (in dollars per share)
Preferred Stock, Par or Stated Value Per Share
Preferred shares authorized (in shares)
Preferred Stock, Shares Authorized
Preferred Stock, Shares Issued
Preferred Stock, Shares Issued
Preferred Stock, Shares Outstanding
Preferred Stock, Shares Outstanding
Statement of Stockholders' Equity [Abstract]
Statement [Table]
Statement [Table]
Statement, Equity Components [Axis]
Equity Components [Axis]
Equity Component [Domain]
Equity Component [Domain]
Common Stock
Common Stock [Member]
Additional Paid-in Capital
Additional Paid-in Capital [Member]
Retained Earnings
Retained Earnings [Member]
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent [Member]
Statement [Line Items]
Statement [Line Items]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance (in shares)
Shares, Outstanding
Balance
Stockholders' Equity Attributable to Parent
Net income
Unrealized loss on available-for-sale investments, net of tax
Available-for-sale Securities, Change in Net Unrealized Holding Gain (Loss), Net of Tax
Foreign currency translation adjustments
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax
Issuance of common stock upon exercise of stock options, vesting of restricted stock units and other common stock issuances (shares)
Stock Issued During Period, Shares, Share-based Compensation, Gross
Issuance of common stock upon exercise of stock options, vesting of restricted stock units and other common stock issuances
Stock Issued During Period, Value, Share-based Compensation, Gross
Repurchase of common stock (shares)
Stock Repurchased During Period, Shares
Repurchase of common stock
Stock Repurchased During Period, Value
Dividends
Dividends
Stock-based compensation
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition
Tax benefit of equity award deductions
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation
Cumulative-effect adjustment from adoption of ASU 2016-09
Cumulative Effect of New Accounting Principle in Period of Adoption
Tax withholdings related to net share settlements of restricted stock units
Increase (Decrease) in Tax withholdings related to net share settlements of restricted stock units
Increase (Decrease) in Tax withholdings related to net share settlements of restricted stock units
Balance (in shares)
Balance
Business Combinations [Abstract]
Business Acquisition, Pro Forma Information, Nonrecurring Adjustments [Table]
Business Acquisition, Pro Forma Information, Nonrecurring Adjustments [Table]
Segments [Axis]
Segments [Axis]
Segments [Domain]
Segments [Domain]
Inventus Solutions Inc., Discovery Services
Inventus Solutions Inc., Discovery Services [Member]
inventus Solutions Inc., Discovery Services [Member]
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Document Fiscal Year Focus
Document Fiscal Year Focus
Transaction costs
Business Acquisition, Transaction Costs
Revenue
Business Acquisition, Pro Forma Revenue
Net income
Business Acquisition, Pro Forma Net Income (Loss)
Pro forma earnings per share - basic (in usd per share)
Business Acquisition, Pro Forma Earnings Per Share, Basic
Pro forma earnings per share - diluted (in usd per share)
Business Acquisition, Pro Forma Earnings Per Share, Diluted
Balance as of January 1,
Unrecognized Tax Benefits
Gross increase related to current period tax positions
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions
Gross decrease related to prior period tax positions
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions
Balance as of December 31,
Fair Value Disclosures [Abstract]
Schedule of financial assets and liabilities measured at fair value on a recurring basis
Fair Value, Assets Measured on Recurring Basis [Table Text Block]
Amortization of intangible assets
Amortization of Intangible Assets
Tax at statutory federal rate
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount
State tax - net of federal benefit
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount
Permanent differences
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount
Foreign tax
Effective Income Tax Rate Reconciliation, Tax Credit, Amount
Foreign tax credits
Effective Income Tax Rate Reconciliation, Tax Credit, Foreign, Amount
Foreign income not taxed at federal rate
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount
Tax Cuts and Jobs Act of 2017, Change in Tax Rate, Income Tax Expense (Benefit)
Tax Cuts and Jobs Act of 2017, Change in Tax Rate, Income Tax Expense (Benefit)
Tax Cuts and Jobs Act of 2017, Change in Tax Rate, Income Tax Expense (Benefit)
Other
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount
Income Tax Expense (Benefit)
Income Before Income Tax Provision
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]
Components Of The Provision For Income Taxes
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Net Deferred Tax Liabilities
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Reconciliation Of The Statutory Federal Income Tax To Effective Tax
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Unrecognized Tax Benefits
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]
Commitments And Contingencies
Commitments and Contingencies Disclosure [Text Block]
Statement of Comprehensive Income [Abstract]
Other comprehensive income (loss), net of tax:
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Unrealized gains (losses) on available-for-sale investments:
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax [Abstract]
Unrealized holding gains (losses) arising during the period
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax
Less: reclassification adjustment for losses included in net income
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax
Net unrealized gains (losses) on available-for-sale investments, net of tax
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent
Foreign currency translation adjustments
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax
Comprehensive income (loss)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Stock options
Employee Stock Option [Member]
Performance-based restricted stock units with a market condition
Performance Shares [Member]
Dividend yield
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate
Risk-free rate
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate
Expected volatility
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate
Grant date fair value
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value
Expected Future Annual Amortization Expense of Patent Assets [Abstract]
Schedule of Finite-Lived Intangible Assets [Table]
Schedule of Finite-Lived Intangible Assets [Table]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets [Line Items]
2017
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 estimated future amortization expense
Patent assets, net
Carrying amount of finite-lived patent assets after accumulated amortization as of the balance sheet date of the costs pertaining to the exclusive legal rights granted to the owner to exploit an invention or a process for a period of time specified by law. Such costs may have been expended to directly apply and receive patent rights, or to acquire such rights.
Deferred tax assets:
Deferred Tax Assets, Net of Valuation Allowance, Current Classification [Abstract]
Deferred revenue
Deferred Tax Assets, Deferred Income
Reserves and other
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Other
Stock-based compensation
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost
Deferred Tax Assets, Goodwill and Intangible Assets
Deferred Tax Assets, Goodwill and Intangible Assets
Operating Loss Carryforwards
Operating Loss Carryforwards
Deferred Tax Assets, Tax Credit Carryforwards, Foreign
Deferred Tax Assets, Tax Credit Carryforwards, Foreign
Total deferred tax assets
Deferred Tax Assets, Gross
Valuation allowance
Net deferred tax assets
Deferred Tax Assets, Net of Valuation Allowance
Title of Individual [Axis]
Title of Individual [Axis]
Relationship to Entity [Domain]
Relationship to Entity [Domain]
Newly hired employees
Newly hired employees [Member]
Newly hired employees [Member]
Existing employees
Existing employees [Member]
Existing employees [Member]
Plan Name [Axis]
Plan Name [Axis]
Plan Name [Domain]
Plan Name [Domain]
2011 and 2008 Plan
2011 and 2008 Plan [Member]
2011 and 2008 Plan [Member]
2011 Plan
2011 Plan [Member]
2011 Plan [Member]
2008 Plan
2008 Plan [Member]
2008 Plan [Member]
Incentive stock options
Incentive stock options [Member]
Incentive stock options [Member]
Restricted stock
Restricted Stock [Member]
PBRSUs and RSUs
Performance-Based Restricted Stock Units (PBRSUs) and Restricted Stock Units (RSUs) [Member]
Performance-Based Restricted Stock Units (PBRSUs) and Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate
Preferred shares authorized (in shares)
Preferred stock par value per share (in dollars per share)
Common stock reserved for future issuance (in shares)
Common Stock, Capital Shares Reserved for Future Issuance
Share-based Compensation Arrangement by Share-based Payment Award, Grant Exercise Price, Percent of Fair Value
Share-based Compensation Arrangement by Share-based Payment Award, Grant Exercise Price, Percent of Fair Value
Share-based Compensation Arrangement by Share-based Payment Award, Grant Exercise Price, Percent of Fair Value
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period
Share-based Compensation Arrangement by Share-based Payment Award, Stock Options Exercise Period
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period
Share-based Compensation Arrangement by Share-based Payment Award, Amount of Options Owned, Percent
Share-based Compensation Arrangement by Share-based Payment Award, Amount of Options Owned, Percent
Share-based Compensation Arrangement by Share-based Payment Award, Amount of Options Owned, Percent
Additional shares of common stock reserved for issuance under the 2011 Plan (in shares)
Shares available for grant (shares)
Aggregate intrinsic value of stock options exercised
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value
Total fair value of stock options vested
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value
Total fair value of RSUs vested
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value
Shares withheld for tax withholdings (in shares)
Shares Paid for Tax Withholding for Share Based Compensation
Total payments for the employees’ minimum tax obligations to taxing authorities
Payments Related to Tax Withholding for Share-based Compensation
PBRSUs granted (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted
Stock-based compensation expense
Unrecognized compensation cost related to unvested equity awards
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized
Weighted-average service period of unrecognized compensation cost related to unvested equity awards
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition
Restricted stock units granted under equity award plans (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value
Stock Repurchase Program, Authorized Amount
Stock Repurchase Program, Authorized Amount
Stock Repurchase Program, Increase in Authorized Amount
Stock Repurchase Program, Increase in Authorized Amount
Stock Repurchase Program, Increase in Authorized Amount
Stock Repurchased, Accumulated Value
Stock Repurchased, Accumulated Value
Stock Repurchased, Accumulated Value
Dividends (USD per share)
Common Stock, Dividends, Per Share, Declared
Number of Directors that also served on client boards
Number of Directors That Also Served On Client Boards
Number of Directors That Also Served On Client Boards
Revenue
Related Party Transaction, Amounts of Transaction
Selling, general and administrative expenses
Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party
Receivables due from related parties
Accounts Receivable, Related Parties, Current
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Schedule of Revenue by Location
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]
2021
Finite-Lived Intangible Assets, Amortization Expense, Year Five
Thereafter
Finite-Lived Intangible Assets, Amortization Expense, after Year Five
Total estimated future amortization expense
Fair Value Measurements, Recurring and Nonrecurring [Table]
Fair Value Measurements, Recurring and Nonrecurring [Table]
Minimum
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]
Realized loss on exchange of short-term investments
Percentage of marketable security investments that mature in one year
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value, Percentage
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value, Percentage
Maturity period
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Maturity Term
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Maturity Term
Percentage of marketable security investments that mature within one to five years
Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value, Percentage
Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value, Percentage
Maturity period, year two through five
Available for sale Securities, Debt Maturities, Year Two Through Five, Fair Value, Maturity Term
Available for sale Securities, Debt Maturities, Year Two Through Five, Fair Value, Maturity Term
Earnings Per Share [Abstract]
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 [Axis]
Antidilutive Securities [Axis]
Weighted-average anti-dilutive securities [Domain]
Antidilutive Securities, Name [Domain]
Stock options outstanding
Restricted stock units outstanding
Weighted-average:
Weighted-average: [Abstract]
Weighted-average anti-dilutive securities
Weighted-Average Anti-Dilutive Securities
Weighted-average anti-dilutive securities not included in the calculation for diluted shares outstanding
Geographical [Axis]
Geographical [Axis]
Segment, Geographical [Domain]
Geographical [Domain]
United States
UNITED STATES
Japan
JAPAN
Korea
KOREA, REPUBLIC OF
Rest of world
Other Country [Member]
United States
Country of Domicile Percent of Total Revenue
Country Of Domicile Percent Of Total Revenue
Other foreign country
Foreign Country Percent of Total Revenue
Foreign Country Percent Of Total Revenue
Total revenue (in dollars)
Total revenue
Percent of Total Revenue
Percent of Total Revenue
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 provision for income taxes
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)
Deferred Foreign Income Tax Expense (Benefit)
Deferred Foreign Income Tax Expense (Benefit)
Total deferred provision for income taxes
Total Deferred Income Tax Expense Benefit
The component of income tax expense for the period representing the net change in deferred tax assets and liabilities of continuing operations.
Basic and Diluted Net Income Per Share Available To Common Stockholders
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Anti-Dilutive Securities Not Included In Diluted Shares Outstanding Calculation
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
Segment Reporting
Segment Reporting Disclosure [Text Block]
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments [Table]
Schedule of Long-term Debt Instruments [Table]
Credit Facility [Axis]
Credit Facility [Axis]
Credit Facility [Domain]
Credit Facility [Domain]
Term Facility
Term Facility [Member]
Term Facility [Member]
Revolving Credit Facility
Revolving Credit Facility [Member]
Variable Rate [Axis]
Variable Rate [Axis]
Variable Rate [Domain]
Variable Rate [Domain]
Base Rate
Base Rate [Member]
London Interbank Offered Rate (LIBOR)
London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt Instrument [Line Items]
Amount of credit facility
Line of Credit Facility, Maximum Borrowing Capacity
Term of credit facility
Debt Instrument, Term
Percentage margin
Debt Instrument, Basis Spread on Variable Rate
Commitment fee on undrawn balances (as a percent)
Line of Credit Facility, Commitment Fee Percentage
Patent Assets [Abstract]
-- None. No documentation exists for this element. --
Amortization of patent assets
Performance Shares [Member]
Restricted stock units granted
Restricted Stock Units Granted [Member]
Restricted stock units vested
Restricted Stock Units Vested [Member]
Restricted stock units forfeited
Restricted Stock Units Forfeited [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted
Non-vested units (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number
Non-vested units (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value
Granted (in shares)
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
Vested (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period
Vested (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value
Forfeited (in shares)
Forfeited (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value
Non-vested units (in shares)
Non-vested units (in dollars per share)
Share-based compensation arrangement by share-based payment award, equity instruments other than options, nonvested, intrinsic value
Aggregate Instrinsic Value of Non-Vested Restricted Stock Units
Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other Than Options, Outstanding, Intrinsic Value
Property and Equipment, Net
-- None. No documentation exists for this element. --
Property and Equipment, Net
Property, Plant and Equipment Disclosure [Text Block]
Schedule of Goodwill
Schedule of Goodwill [Table Text Block]
Payables and Accruals [Abstract]
Fair Value Inputs, Liabilities, Quantitative Information [Table]
Fair Value Inputs, Liabilities, Quantitative Information [Table]
Liability Class [Axis]
Liability Class [Axis]
Fair Value by Liability Class [Domain]
Fair Value by Liability Class [Domain]
Accrued payroll-related expenses
Accrued Payroll Related Expenses [Member]
Accrued expenses
Accrued Liabilities [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Accrued liabilities
Accrued Liabilities, Current
Other current liabilities
Other Liabilities, Current
Income Statement [Abstract]
Scenario [Axis]
Scenario [Axis]
Scenario, Unspecified [Domain]
Scenario, Unspecified [Domain]
Gain on sale of patent assets, net
Gain (Loss) on Disposition of Other Assets
Operating income (loss)
Interest and other income (expense), net:
Nonoperating Income (Expense) [Abstract]
Interest income
Interest Income, Operating
Interest expense
Interest Expense, Debt
Other income (expense), net
Total interest and other income (expense), net
Nonoperating Income (Expense)
Income (loss) before provision for income taxes
Net income (loss)
Net income (loss) per share:
Weighted-average shares used in computing net income (loss) per share:
Weighted-average shares used in computing net income per common share: [Abstract]
Basic (shares)
Weighted Average Number of Shares Outstanding, Basic
Diluted (shares)
Weighted Average Number of Shares Outstanding, Diluted
Activity Under Equity Settled Award Plans And Related Information
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
Restricted Stock Unit Activity
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]
Weighted-Average Assumptions Used To Estimate The Fair Value Of PBRSUs
Schedule of Assumptions Used [Table Text Block]
Stock repurchase activity
Class of Treasury Stock [Table Text Block]
Accrued And Other Current Liabilities
Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]
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
Restricted cash
Restricted Cash and Cash Equivalents, Current
Accounts receivable, net
Accounts Receivable, Gross, Current
Prepaid expenses and other current assets
Prepaid Expense and Other Assets, Current
Total current assets
Assets, Current
Patent assets, net
Property and equipment, net
Property, Plant and Equipment, Net
Intangible assets, net
Intangible Assets, Net (Excluding Goodwill)
Goodwill
Goodwill
Restricted cash, less current portion
Restricted Cash and Cash Equivalents, Noncurrent
Other assets
Other Assets, Noncurrent
Deferred tax assets
Deferred Tax Assets, Net, Noncurrent
Total assets
Assets
Liabilities and stockholders’ equity
Liabilities and Equity [Abstract]
Current liabilities:
Liabilities, Current [Abstract]
Accounts payable
Accounts Payable, Current
Deferred revenue
Deferred Revenue, Current
Current portion of long-term debt
Long-term Debt, Current Maturities
Total current liabilities
Liabilities, Current
Deferred revenue, less current portion
Deferred Revenue, Noncurrent
Deferred tax liabilities
Noncurrent Deferred Tax Liabilities
Represents the noncurrent portion of deferred tax liabilities, which result from applying the applicable tax rate to net taxable temporary differences pertaining to each jurisdictionto which the entity is obligated to pay income tax, as well as the noncurrent portion of the amount recognized for unceratin tax position as of the balance sheet date.
Long-term debt, less current portion
Long-term Debt, Excluding Current Maturities
Other liabilities
Other Liabilities, Noncurrent
Total liabilities
Liabilities
Commitments and contingencies (Note 12)
Commitments and Contingencies
Stockholders’ equity:
Stockholders' Equity Attributable to Parent [Abstract]
Common stock, $0.0001 par value — 200,000 shares authorized; 49,627 and 48,776 issued and outstanding as of December 31, 2017 and 2016, respectively
Common Stock, Value, Issued
Additional paid-in capital
Additional Paid in Capital
Retained earnings
Retained Earnings (Accumulated Deficit)
Accumulated other comprehensive loss
Accumulated Other Comprehensive Income (Loss), Net of Tax
Total stockholders’ equity
Total liabilities and stockholders’ equity
Liabilities and Equity
Patent Assets, Net [Abstract]
Change in Patent Assets [Axis]
Change in Patent Assets [Axis]
-- None. No documentation exists for this element. --
Change in Patent Assets [Domain]
ChangeinIntangibleAssets [Domain]
-- None. No documentation exists for this element. --
Additions
Additions [Member]
Dispositions
Sale Intangibles [Member]
Patent assets
Schedule of repayments of principal
Schedule of Maturities of Long-term Debt [Table Text Block]
Schedule of Segment Reporting Information, by Segment [Table]
Schedule of Segment Reporting Information, by Segment [Table]
Consolidation Items [Axis]
Consolidation Items [Axis]
Consolidation Items [Domain]
Consolidation Items [Domain]
Operating Segments
Operating Segments [Member]
Patent Risk Management
Patent Risk Management [Member]
Patent Risk Management [Member]
Segment Reporting Information [Line Items]
Segment Reporting Information [Line Items]
Assets
Schedule of Goodwill [Table]
Schedule of Goodwill [Table]
Goodwill [Line Items]
Goodwill [Line Items]
Goodwill [Roll Forward]
Goodwill [Roll Forward]
Goodwill
Impairment losses
Foreign currency translation adjustments
Goodwill, Foreign Currency Translation Gain (Loss)
Goodwill
Financial Instruments
Fair Value Disclosures [Text Block]
Basis Of Presentation And Significant Accounting Policies
Significant Accounting Policies [Text Block]
Net income available to common stockholders:
Net income available to common stockholders: [Abstract]0
Numerator:
Numerator: [Abstract]
Basic:
Basic: [Abstract]
Denominator:
Denominator: [Abstract]
Basic shares:
Basic shares: [Abstract]
Weighted-average shares used in computing basic net income available to common stockholders (shares)
Diluted shares:
Diluted shares: [Abstract]
Dilutive effect of stock options and restricted stock units using treasury-stock method
Weighted Average Number Diluted Shares Outstanding Adjustment
Weighted-average shares used in computing diluted net income available to common stockholders (shares)
Net income per common share available to common stockholders:
Net income per share: [Abstract]
Schedule of Property, Plant and Equipment [Table]
Property, Plant and Equipment [Table]
Property, Plant and Equipment, type [Axis]
Property, Plant and Equipment, Type [Axis]
Property and equipment, type [Domain]
Property, Plant and Equipment, Type [Domain]
Property and equipment, types
Property, Plant and Equipment, Other Types [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense
Depreciation, Depletion and Amortization
Property And Equipment, Net
Property, Plant and Equipment [Table Text Block]
Share Repurchase Utilized
Share Repurchase Utilized
Share Repurchase Utilized
Stock Repurchased, Accumulated, Weighted Average Price
Stock Repurchased, Accumulated, Weighted Average Price
Stock Repurchased, Accumulated, Weighted Average Price
Stock Repurchased and Retired During Period, Shares
Stock Repurchased and Retired During Period, Shares
Stock Repurchased During Period Weighted Average Price
Stock Repurchased During Period Weighted Average Price
Stock Repurchased During the Period Weighted Average Price per Share
Stock Repurchased During Period, Value
Patent Assets, Net
Patent Assets [Text Block]
Patent assets.
Cash and Cash Equivalents [Axis]
Cash and Cash Equivalents [Axis]
Cash and Cash Equivalents [Domain]
Cash and Cash Equivalents [Domain]
Corporate bonds
Corporate Bond Securities [Member]
US Government Agencies Debt Securities [Member]
US Government Agencies Debt Securities [Member]
U.S. government and agency securities
US Government Corporations and Agencies Securities [Member]
Commercial paper
Commercial Paper [Member]
Municipal bonds
Municipal Bonds [Member]
Money market funds
Money Market Funds [Member]
Investment Type [Axis]
Investment Type [Axis]
Investments [Domain]
Investments [Domain]
Equity Securities
Equity Securities [Member]
Fair Value, Hierarchy [Axis]
Fair Value, Hierarchy [Axis]
Fair Value Hierarchy [Domain]
Fair Value Hierarchy [Domain]
Level 1
Fair Value, Inputs, Level 1 [Member]
Level 2
Fair Value, Inputs, Level 2 [Member]
Assets:
Cash equivalents:
Cash and Cash Equivalents, Fair Value Disclosure
Short-term investments:
Investments, Debt and Equity Securities [Abstract]
Short-term investments amortized cost
Available-for-sale Securities, Amortized Cost Basis
Short-term investments unrealized gains
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax
Short-term investments unrealized losses
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax
Estimated fair value
Available-for-sale Securities
Short-term investments fair value levels
Investments, Fair Value Disclosure
Business Acquisition, Pro Forma Information
Goodwill, Impairment Loss
Aggregate Future Non-Cancelable Minimum Lease Payments For Operating Leases
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]
Schedule of Business Acquisitions, by Acquisition [Table]
Schedule of Business Acquisitions, by Acquisition [Table]
Business Acquisition [Axis]
Business Acquisition [Axis]
Business Acquisition, Acquiree [Domain]
Business Acquisition, Acquiree [Domain]
Business Acquisition [Line Items]
Business Acquisition [Line Items]
Current assets
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets
Intangible assets
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill
Property, plant, equipment and other long term assets
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment
Deferred tax asset
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets Noncurrent
Current liabilities
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities
Deferred tax liability
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent
Other long term liabilities
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt
Cash purchase consideration paid
Payments to Acquire Businesses, Gross
Acquisition related costs
Business Combination, Acquisition Related Costs
Goodwill from business acquisition
Goodwill, Acquired During Period
Basis of Presentation
Basis of Accounting, Policy [Policy Text Block]
Use of Estimates
Use of Estimates, Policy [Policy Text Block]
Revenue Recognition
Revenue Recognition, Policy [Policy Text Block]
Accounting fo Payments to Clients
Revenue Recognition, Incentives [Policy Text Block]
Deferred Revenue
Revenue Recognition, Deferred Revenue [Policy Text Block]
Accounts Receivable
Trade and Other Accounts Receivable, Policy [Policy Text Block]
Concentration of Risk
Concentration Risk, Credit Risk, Policy [Policy Text Block]
Fair Value Measurements
Fair Value of Financial Instruments, Policy [Policy Text Block]
Cash and Cash Equivalents
Cash and Cash Equivalents, Policy [Policy Text Block]
Short-Term Investments
Investment, Policy [Policy Text Block]
Property and Equipment
Property, Plant and Equipment, Policy [Policy Text Block]
Internal-Use Software and Website Development Costs
Internal Use Software, Policy [Policy Text Block]
Patent Assets, Net
Patent Assets [Policy Text Block]
Disclosure of accounting policy for patent assets which which may include the basis of such assets, amortization methods used and estimated useful lives.
Impairment of Long-Lived Assets
Impairment or Disposal of Long-Lived Assets, Including Intangible Assets, Policy [Policy Text Block]
Goodwill
Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]
Advertising Costs
Advertising Costs, Policy [Policy Text Block]
Foreign Currency Accounting
Foreign Currency Transactions and Translations Policy [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]
Business Combinations
Business Combinations Policy [Policy Text Block]
Reserves for Known and Incurred but not Reported Claims
Unpaid Policy Claims and Claims Adjustment Expense, Policy [Policy Text Block]
Recently Adopted Accounting Standards
New Accounting Pronouncements, Policy [Policy Text Block]
Intangible Assets Net
Intangible Assets Net [Member]
Intangible Assets, Net
Schedule of Finite-Lived Intangible Assets [Table Text Block]
Expected Future Annual Amortization Of Intangible Assets
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]
Accrued Liabilities
Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block]
Business Combinations
Business Combination Disclosure [Text Block]
Number of reportable segments
Number of Reportable Segments
Adjusted operating income
Adjusted Operating Income (Loss)
Adjusted Operating Income (Loss)
Allocated Share-based Compensation Expense, Net of Tax
Allocated Share-based Compensation Expense, Net of Tax
Depreciation and amortization expense
Adjusted EBITDA
Adjusted EBITDA
Earnings before interest, taxes, depreciation, amortization, and share-based compensation and the related employer payroll taxes.
Net capital loss carryforwards
Deferred Tax Assets, Capital Loss Carryforwards
Net operating loss carryforwards
Deferred Tax Assets, Operating Loss Carryforwards
Increase in deferred tax asset resulting from TCJA
Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Change in Tax Rate, Increase (Decrease) in Deferred Tax Asset
Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Change in Tax Rate, Increase (Decrease) in Deferred Tax Asset
Decrease in deferred tax asset valuation allowance resulting from TCJA
Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Change in Tax Rate, Increase (Decrease) in Deferred Tax Asset Valuation Allowance
Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Change in Tax Rate, Increase (Decrease) in Deferred Tax Asset Valuation Allowance
Increase in deferred tax asset resulting from TCJA, net of valuation allowance
Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Change in Tax Rate, Increase (Decrease) in Deferred Tax Asset, Net of Valuation Allowance
Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Change in Tax Rate, Increase (Decrease) in Deferred Tax Asset, Net of Valuation Allowance
Transition tax on accumulated foreign earnings related to the TCJA
Tax Cuts and Jobs Act, Transition Tax for Accumulated Foreign Earnings, Income Tax Expense (Benefit)
Tax Cuts and Jobs Act, Transition Tax for Accumulated Foreign Earnings, Income Tax Expense (Benefit)
Increase (decrease) in valuation allowance of deferred tax asset excluding effects of TCJA
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount Excluding Effects of Tax Cuts and Jobs Act
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount Excluding Effects of Tax Cuts and Jobs Act
Unrecognized tax benefits
Interest and penalties associated with unrecognized tax benefits
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued
Intangible Assets, Net
Intangible Assets Disclosure [Text Block]
Equity Components [Axis]
Retained Earnings
Depreciation and amortization expense
Stock-based Compensation, including payroll taxes
Stock-based Compensation, including payroll taxes
Stock-based Compensation, inclusive of associated payroll taxes
Asset Impairment Charges
Nonoperating Income (Expense)
Subtotal segment adjusted operating income
Debt
Debt Disclosure [Text Block]
Statement of Cash Flows [Abstract]
Cash flows from operating activities
Net Cash Provided by (Used in) Operating Activities [Abstract]
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Depreciation and amortization
Stock-based compensation
Share-based Compensation
Excess tax benefit from stock-based compensation
Excess Tax Benefit from Share-based Compensation, Operating Activities
Gain on sale of patent assets, net
Amortization of premium and discount on investments
Accretion (Amortization) of Discounts and Premiums, Investments
Deferred taxes
Deferred Income Tax Expense (Benefit)
Unrealized foreign currency (gain) loss
Foreign Currency Transaction Gain (Loss), Unrealized
Fair value adjustments on deferred payment obligations
Liabilities, Fair Value Adjustment
Gain on extinguishment of deferred payment obligation
Gain (Loss) on Extinguishment of Debt
Impairment losses
Other
Other Noncash Income (Expense)
Changes in assets and liabilities, net of business acquired:
Increase (Decrease) in Operating Capital [Abstract]
Accounts receivable
Increase (Decrease) in Accounts Receivable
Prepaid expenses and other assets
Increase (Decrease) in Prepaid Expense and Other Assets
Accounts payable
Increase (Decrease) in Accounts Payable
Accrued and other liabilities
Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities
Deferred revenue
Increase (Decrease) in Deferred Revenue
Net cash provided by operating activities
Net Cash Provided by (Used in) Operating Activities
Investing activities
Net Cash Provided by (Used in) Investing Activities [Abstract]
Purchases of investments
Payments to Acquire Available-for-sale Securities
Maturities of investments
Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities
Sales of investments
Proceeds from Sale of Available-for-sale Securities
Business acquisition, net of cash acquired
Decrease in restricted cash
Increase (Decrease) in Restricted Cash
Purchases of property and equipment
Payments to Acquire Property, Plant, and Equipment
Acquisitions of patent assets
Payments to Acquire Other Productive Assets
Proceeds from sale of patent assets
Proceeds from Sale of Intangible Assets
Acquisition of other assets
Payments to Acquire Assets, Investing Activities
Net cash used in investing activities
Net Cash Provided by (Used in) Investing Activities
Financing activities
Net Cash Provided by (Used in) Financing Activities [Abstract]
Repayments of principal on deferred payment obligations
Repayments of Other Debt
Proceeds from deferred payment obligations
Proceeds from (Payments for) Other Financing Activities
Proceeds from issuance of term debt
Proceeds from Issuance of Long-term Debt
Payment of debt issuance costs
Payments of Debt Issuance Costs
Repayment of principal on term debt
Repayments of Long-term Debt
Deferred acquisition payment
Payments of Merger Related Costs, Financing Activities
Proceeds from exercise of stock options
Proceeds from Issuance of Shares under Incentive and Share-based Compensation Plans, Including Stock Options
Taxes paid related to net-share settlements of restricted stock units
Excess tax benefit from stock-based compensation
Excess Tax Benefit from Share-based Compensation, Financing Activities
Payments of capital leases
Repayments of Long-term Capital Lease Obligations
Payments of Dividends
Payments of Dividends
Repurchase 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
Foreign-currency effect on cash and cash equivalents
Effect of Exchange Rate on Cash and Cash Equivalents
Net increase in cash and cash equivalents
Cash and Cash Equivalents, Period Increase (Decrease)
Cash and cash equivalents at beginning of period
Cash and cash equivalents at end of period
Supplemental disclosures of cash flow information
Supplemental Cash Flow Information [Abstract]
Cash paid for interest
Interest Paid
Cash paid for income taxes
Income Taxes Paid
Non-cash investing and financing activities
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Change in patent assets purchased and accrued but not paid
Change in patent assets purchased and accrued but not paid.
Change in fixed assets purchased and accrued but not paid
Capital Expenditures Incurred but Not yet Paid
Patent assets and intangible assets received in barter transactions
Noncash or Part Noncash Acquisition, Intangible Assets Acquired
Nonmonetary exchange for investments
Noncash or Part Noncash Acquisition, Net Nonmonetary Assets Acquired (Liabilities Assumed)
Document and Entity Information [Abstract]
Entity Registrant Name
Entity Registrant Name
Document Type
Document Type
Current Fiscal Year End Date
Current Fiscal Year End Date
Document Period End Date
Document Period End Date
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
Amendment Flag
Amendment Flag
Entity Central Index Key
Entity Central Index Key
Entity Current Reporting Status
Entity Current Reporting Status
Entity Voluntary Filers
Entity Voluntary Filers
Entity Filer Category
Entity Filer Category
Entity Well-known Seasoned Issuer
Entity Well-known Seasoned Issuer
Document Fiscal Period Focus
Document Fiscal Period Focus
Entity Public Float
Entity Public Float
Goodwill
Goodwill Disclosure [Text Block]
Net Income Available to Common Stockholders
Earnings Per Share [Text Block]
2018
Operating Leases, Future Minimum Payments Due, Next Twelve Months
2019
Operating Leases, Future Minimum Payments, Due in Two Years
2020
Operating Leases, Future Minimum Payments, Due in Three Years
2021
Operating Leases, Future Minimum Payments, Due in Four Years
2022
Operating Leases, Future Minimum Payments, Due in Five Years
Thereafter
Operating Leases, Future Minimum Payments, Due Thereafter
Future non-cancelable minimum operating lease payments
Operating Leases, Future Minimum Payments Due
Less: minimum payments to be received from non-cancelable subleases
Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals
Total future non-cancelable minimum operating lease payments, net
Future non-cancelable minimum operating lease payments, net
Future non-cancelable minimum operating lease payments, net
Selected Quarterly Financial Information (Unaudited)
Quarterly Financial Information [Text Block]
Property and Equipment, Net [Abstract]
Leasehold improvements
Leasehold Improvements [Member]
Computer, equipment and software
Computer Equipment [Member]
Furniture and fixtures
Furniture and Fixtures [Member]
Construction-in-progress
Asset under Construction [Member]
Internal-use software
Capitalized Computer Software, Gross
Leasehold improvements
Leasehold Improvements, Gross
Computer, equipment and software
Machinery and Equipment, Gross
Furniture and fixtures
Furniture and Fixtures, Gross
Construction-in-progress
Construction in Progress, Gross
Total property, plant and equipment, gross
Property, Plant and Equipment, Gross
Less: Accumulated depreciation and amortization
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment
Total property and equipment, net
Schedule of Business Acquisitions
Schedule of Business Acquisitions, by Acquisition [Table Text Block]
Schedule of proforma information
Business Acquisition, Pro Forma Information [Table Text Block]
Patent Assets, Net
Schedule of Patent Assets [Table Text Block]
Schedule of Patent Assets
Expected Future Annual Amortization Of Patent Assets
Selected Quarterly Financial Information (Unaudited)
Quarterly Financial Information [Table Text Block]