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Amended and Restated 2008 Equity Incentive Award Plan [Member] TiVo Inc. Amended and Restated 2008 Equity Incentive Award Plan [Member] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] TiVo Solutions [Member] TiVo Inc. [Member] TiVo Inc. 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[Member] DISH Network L.L.C. [Member] DISH Network L.L.C. 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Class of Stock [Line Items] Balance Stockholders' Equity Attributable to Parent Balance (treasury shares) Treasury Stock, Shares Balance (common shares) Common Stock, Shares, Issued Cumulative effect adjustment Cumulative Effect of New Accounting Principle in Period of Adoption Net (loss) income Net Income (Loss) Attributable to Parent Other comprehensive income, net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Issuance of common stock under employee stock purchase plan (in shares) Stock Issued During Period, Shares, Employee Stock Purchase Plans Issuance of common stock under employee stock purchase plan Stock Issued During Period, Value, Employee Stock Purchase Plan Issuance of restricted stock, net Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Equity-based compensation Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Dividends Dividends, Common Stock, Cash 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by (Used in) Operating Activities, Continuing Operations Net cash used in operating activities of discontinued operations Cash Provided by (Used in) Operating Activities, Discontinued Operations 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] Payments for purchase of short- and long-term marketable securities Payments to Acquire Marketable Securities Proceeds from sales or maturities of short- and long-term marketable securities Proceeds from Sale and Maturity of Marketable Securities Cash acquired in TiVo Acquisition, net of cash paid Cash Acquired from Acquisition Return of cash paid for TiVo Acquisition Proceeds from Previous Acquisition Payment to Dissenting Holders in TiVo Acquisition Payments for purchase of property and equipment Payments to Acquire Property, Plant, and Equipment Payments for acquisition of patents Payments to Acquire Intangible Assets Other investing, net Payments for (Proceeds from) Other Investing Activities Net cash (used in) provided by 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 long-term debt, net of issuance costs Proceeds from Issuance of Long-term Debt Principal payments on long-term debt Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities Payments for dividends Payments of Dividends Payments for purchase of warrants Proceeds from (Repurchase of) Equity Proceeds from sale of call options Payments for (Proceeds from) Derivative Instrument, Financing Activities Payments for contingent consideration and deferred holdback Payments for (Proceeds from) Previous Acquisition Payments for withholding taxes related to net settlement of restricted awards Payments Related to Tax Withholding for Share-based Compensation Proceeds from employee stock purchase plan and exercise of employee stock options Proceeds from Issuance of Shares under Incentive and Share-based Compensation Plans, Including Stock Options Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Effect of exchange rate changes on cash and cash equivalents Effect of Exchange Rate on Cash and Cash Equivalents Net increase (decrease) 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 Carrying Value Cash and cash equivalents at end of period Restricted Awards [Member] Restricted Stock Award or Restricted Stock Unit [Member] Restricted Stock Award or Restricted Stock Unit [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Restricted Awards (In Thousands) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Beginning Balance (in shares) Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Ending Balance (in shares) Weighted-Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward] Beginning Balance (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 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 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 dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Ending Balance (in dollars per share) Discontinued Operations and Disposal Groups [Abstract] Statement of Financial Position [Abstract] Preferred Stock, par value (in usd per share) Preferred Stock, Par or Stated Value Per Share Preferred Stock, shares authorized Preferred Stock, Shares Authorized Preferred Stock, shares issued Preferred Stock, Shares Issued Preferred Stock, shares outstanding Preferred Stock, Shares Outstanding Common Stock, par value (in usd 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 outstanding Common Stock, Shares, Outstanding Treasury Stock, shares 2019 Operating Leases, Future Minimum Payments Due, Next Twelve Months 2020 Operating Leases, Future Minimum Payments, Due in Two Years 2021 Operating Leases, Future Minimum Payments, Due in Three Years 2022 Operating Leases, Future Minimum Payments, Due in Four Years 2023 Operating Leases, Future Minimum Payments, Due in Five Years Thereafter Operating Leases, Future Minimum Payments, Due Thereafter Gross future minimum lease payments Operating Leases, Future Minimum Payments Due Less: Sublease receipts Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals Net future minimum lease payments Operating Leases, Future Minimum Payments, Net Operating Leases, Future Minimum Payments, Net Revenues Revenue from Contract with Customer [Text Block] Schedule of Acquired Indefinite-lived Intangible Assets by Major Class [Table] Schedule of Acquired Indefinite-lived Intangible Assets by Major Class [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] TiVo Tradename [Member] TiVo Tradename [Member] TiVo Tradename [Member] Acquired Indefinite-lived Intangible Assets [Line Items] Acquired Indefinite-lived Intangible Assets [Line Items] Indefinite-Lived Trade Names Indefinite-Lived Trade Names Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table] Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table] Acquired Finite-Lived Intangible Assets by Major Class [Axis] Developed Technology and Patents [Member] Developed Technology And Patents [Member] Developed Technology and Patents [Member] Existing Contracts and Customer Relationships [Member] Existing Contracts And Customer Relationships [Member] Existing Contracts and Customer Relationships [Member] Content Databases and Other [Member] Database Rights [Member] Trademarks / Tradenames [Member] Trademarks and Trade Names [Member] Acquired Finite-Lived Intangible Assets [Line Items] Acquired Finite-Lived Intangible Assets [Line Items] Weighted-Average Remaining Useful Life Finite-Lived Intangible Asset, Useful Life Gross Finite-Lived Intangible Assets, Gross Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Total Finite-Lived Intangible Assets, Net Total Intangible Assets, Gross Intangible Assets, Gross (Excluding Goodwill) Total Intangible Assets, Net Intangible Assets, Net (Excluding Goodwill) Tax Credit Carryforward [Table] Tax Credit 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Purchase Plan Valuation Assumptions [Table Text Block] Tabular disclosure of the significant assumptions used during the year to estimate the fair value of employee stock purchase plans and option plans, including, but not limited to: (a) expected term, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. Weighted Average Fair Value Per Share Of Equity-Based Awards Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value [Table Text Block] Restricted Awards Activity Nonvested Restricted Stock Shares Activity [Table Text Block] Schedule of Stock Option Activity Share-based Compensation, Stock Options, Activity [Table Text Block] Quarterly Financial Information Disclosure [Abstract] Schedule of Quarterly Consolidated Financial Data (Unaudited) Quarterly Financial Information [Table Text Block] Financial Statement Details Additional Financial Information Disclosure [Text Block] Business Combinations [Abstract] Schedule of Preliminary Purchase Price Allocation Schedule of Business Acquisitions, by Acquisition [Table Text Block] Pro Forma Information Business Acquisition, Pro Forma Information [Table Text Block] Acquisitions Business Combination Disclosure [Text Block] Weighted average shares used in computing basic per share amounts Dilutive effect of equity-based compensation awards Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Weighted average shares used in computing diluted per share amounts Movement in Deferred Tax Asset, Valuation Allowance Movement in Deferred Tax Valuation Allowances [Roll Forward] Movement in Deferred Tax Valuation Allowances [Roll Forward] Balance at beginning of period Additions Valuation Allowance, Deferred Tax Asset, Additions Valuation Allowance, Deferred Tax Asset, Additions Assumed in acquisition Valuation Allowance, Deferred Tax Asset, Acquired in Acquisition Valuation Allowance, Deferred Tax Asset, Acquired in Acquisition Deductions resulting from business combination Valuation Allowance, Deferred Tax Asset, Decrease due to Business Combination Valuation Allowance, Deferred Tax Asset, Decrease due to Business Combination Balance at end of period Facility-related costs Facility-Related Costs Facility-Related Costs Severance costs Severance Costs Share-based payments Restructuring and Related Activities, Share-based Compensation Restructuring and Related Activities, Share-based Compensation Contract termination costs Business Exit Costs Asset impairment Asset Impairment Charges Restructuring and asset impairment charges Schedule of Future Minimum Rental Payments for Operating Leases Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] Schedule of New Accounting Pronouncements and Changes in Accounting Principles Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block] Revenue By Contract Type Revenue By Contract Type [Table Text Block] Revenue By Contract Type [Table Text Block] Revenue from External Customers by Geographic Areas Revenue from External Customers by Geographic Areas [Table Text Block] Schedule of Accounts, Notes, Loans and Financing Receivable Schedule of Accounts, Notes, Loans and Financing Receivable [Table 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Grants in Period, Weighted Average Grant Date Fair Value Equity-based compensation Share-based Compensation [Abstract] Pre-tax equity-based compensation, excluding amounts included in restructuring expense Pre-tax equity-based compensation, included in restructuring expense Fair Value Disclosures [Abstract] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [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] Carrying Amount [Member] Reported Value Measurement [Member] Fair Value [Member] Estimate of Fair Value Measurement [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Significant Other Observable Inputs (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] Long-term Debt Total Long-term debt Long-term Debt, Fair Value Allowance for Doubtful Accounts Receivable [Roll Forward] Allowance for Doubtful Accounts Receivable [Roll Forward] Balance at beginning of period Allowance for Doubtful Accounts Receivable, Current Provision for bad debt Provision for Doubtful Accounts Deductions, net Allowance For Doubtful Accounts Receivable Adjustments Increase (Decrease) Allowance For Doubtful Accounts Receivable Adjustments Increase (Decrease) Balance at end of period Product and Intellectual Property Licensing Segments [Member] Product and Intellectual Property Licensing Segments [Member] Product and Intellectual Property Licensing Segments [Member] Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Fair Value, Measurements, Nonrecurring [Member] Fair Value, Measurements, Nonrecurring [Member] Fair Value, Measurements, Recurring [Member] Fair Value, Measurements, Recurring [Member] Fair Value Assets, Nature of Assets [Axis] Fair Value, by Balance Sheet Grouping [Axis] Fair Value, by Balance Sheet Grouping [Axis] Fair Value Assets, Nature of Assets [Domain] Fair Value Assets Nature Of Assets [Domain] Fair Value Assets, Nature of Assets [Domain] Cash and cash equivalents/Short-term marketable securities [Member] Current Assets [Member] Current Assets [Member] Long-term marketable securities [Member] Non Current Assets [Member] Non-Current Assets [Member] Accounts payable and accrued expenses [Member] Current Liabilities [Member] Current Liabilities [Member] Other long-term liabilities [Member] Non Current Liabilities [Member] Non Current Liabilities [Member] Money Market Funds [Member] U.S. Treasuries / Agencies [Member] US Government Agencies Debt Securities [Member] Cubiware Contingent Consideration [Member] Cubiware Contingent Consideration [Member] Cubiware Contingent Consideration [Member] Interest Rate Swaps [Member] Interest Rate Swap [Member] Cash and Cash Equivalents [Member] Quoted Prices In Active Markets (Level 1) [Member] Fair Value, Inputs, Level 1 [Member] Significant Unobservable Inputs (Level 3) [Member] Fair Value, Inputs, Level 3 [Member] Fair value assets measured on recurring basis Assets, Fair Value Disclosure Fair value liabilities measured on a recurring basis Financial and Nonfinancial Liabilities, Fair Value Disclosure Impairment of Long-Lived Assets Held-for-use Impairment of Long-Lived Assets Held-for-use Carrying Value and Par Value of Debt Schedule of Long-term Debt Instruments [Table Text Block] Convertible Debt Convertible Debt [Table Text Block] Components of Interest Expense Interest Income and Interest Expense Disclosure [Table Text Block] Schedule of Maturities of Long-term Debt Schedule of Maturities of Long-term Debt [Table Text Block] Summary of Interest Rate Swaps Schedule of Interest Rate Derivatives [Table Text Block] Available-For-Sale And Other Investment Securities Schedule Of Available For Sale Securities Including Cash and Cash Equivalents [Table Text Block] Schedule Of Available For Sale Securities Including Cash and Cash Equivalents [Table Text Block] Fair Value And Gross Unrealized Losses Related To Available-For-Sale Securities Fair Value And Gross Unrealized Losses Related To Available-For-Sale Securities [Table Text Block] Fair value and gross unrealized losses related to available-for-sale securities [Table Text Block] Available-For-Sale Debt Investments At Fair Value Investments Classified by Contractual Maturity Date [Table Text Block] Basis of Presentation and Summary of Significant Accounting Policies Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Revenues, net Revenues Operating income (loss) from continuing operations Loss from continuing operations, net of tax Income (loss) from discontinued operations, net of tax Statement of Comprehensive Income [Abstract] Other comprehensive (loss) income, net of tax: Other Comprehensive Income (Loss), Net of Tax [Abstract] Change in foreign currency translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent Change in unrealized gains (losses) on marketable securities Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, after Tax Less: Reclassification adjustment on sale Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax Other comprehensive (loss) income, net of tax Comprehensive (loss) income Comprehensive Income (Loss), Net of Tax, Attributable to Parent 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] As If Applying Prior Guidance [Member] Calculated under Revenue Guidance in Effect before Topic 606 [Member] Effect of Change Higher/(Lower) [Member] Difference between Revenue Guidance in Effect before and after Topic 606 [Member] Total Revenues, net Loss from continuing operations before income taxes Income tax expense Legacy TiVo Solutions Plan and Legacy Rovi Plan [Member] Legacy TiVo Solutions Plan and Legacy Rovi Plan [Member] Legacy TiVo Solutions Plan and Legacy Rovi Plan [Member] Legacy Rovi Plans [Member] Legacy Rovi Plans [Member] Legacy Rovi Plans [Member] Accrual adjustment Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Equity-based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Long-term Debt [Member] Long-term Debt [Member] Threshold trading days Debt Instrument, Convertible, Threshold Trading Days Threshold trading days Debt Instrument, Convertible, Threshold Consecutive Trading Days Minimum percentage of common stock price on applicable conversion price resulting in the noteholders ability to convert the notes into cash or stock Minimum percentage of common stock price on applicable conversion price resulting in the noteholders ability to convert the notes into cash or stock Minimum percentage of common stock price on applicable conversion price resulting in the noteholders ability to convert the notes into cash or stock Threshold business days Debt Instrument, Convertible, Threshold Business Days Debt Instrument, Convertible, Threshold Business Days Measurement period Debt Instrument, Convertible, Threshold Consecutive Trading Days, Debt Instrument Trading Price Condition Debt Instrument, Convertible, Threshold Consecutive Trading Days, Debt Instrument Trading Price Condition Maximum percentage of trading price on product sale price resulting in conversion of notes into cash or stock Maximum percentage of trading price on product sale price resulting in conversion of notes into cash or stock If the trading price per note for each day of the measurement period was less than this percentage of the product of the last reported sale price of the Company's common stock and the conversion rate on such day, the notes are eligible for conversion. Non-convertible borrowing rate (percent) Debt Instrument, Interest Rate, Effective Percentage Debt issuance costs Debt Issuance Costs, Gross Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Balance at beginning of period Unrecognized Tax Benefits Assumed in acquisition Unrecognized Tax Benefits, Increase Resulting from Acquisition Tax positions related to the current year Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Tax positions related to prior years Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions Tax Act of 2017 Unrecognized Tax Benefits, Increase Resulting from Tax Cuts and Jobs Act of 2017 Unrecognized Tax Benefits, Increase Resulting from Tax Cuts and Jobs Act of 2017 Tax positions related to prior years Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions Tax Act of 2017 Unrecognized Tax Benefits, Decrease Resulting from Tax Cuts and Jobs Act of 2017 Unrecognized Tax Benefits, Decrease Resulting from Tax Cuts and Jobs Act of 2017 Audit settlements Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities Statute of limitations lapses Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations Foreign currency Unrecognized Tax Benefits, Increase Resulting from Foreign Currency Translation Foreign currency Unrecognized Tax Benefits, Decrease Resulting from Foreign Currency Translation Balance at end of period Significant Portions of the Deferred Tax Assets and Liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Summary of Tax Credit Carryforwards Summary of Tax Credit Carryforwards [Table Text Block] Summary of Operating Loss Carryforwards Summary of Operating Loss Carryforwards [Table Text Block] Schedule of Deferred Tax Asset Valuation Roll Forward Schedule of Deferred Tax Asset Valuation Roll Forward [Table Text Block] Schedule of Deferred Tax Asset Valuation Roll Forward [Table Text Block] Schedule of Unrecognized Tax Benefits Roll Forward Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] Components of Income from Continuing Operations Before Income Taxes Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block] Schedule of Components of Income Tax Expense (Benefit) Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss Description of Business Business Description [Policy Text Block] The entire disclosure for the business description. Business description describes the nature and type of organization including but not limited to organizational structure as may be applicable to holding companies, parent and subsidiary relationships, business divisions, business units, business segments, affiliates and information about significant ownership of the reporting entity. Basis of Presentation and Principles of Consolidation Basis of Presentation and Principles Of Consolidation [Policy Text Block] The entire disclosure for the basis of presentation concepts and principles of consolidation. Basis of presentation describes the underlying basis used to prepare the financial statements. Principles of consolidation discloses the accounting policy regarding (1) the principles it follows in consolidating or combining the separate financial statements, including the principles followed in determining the inclusion or exclusion of subsidiaries or other entities in the consolidated or combined financial statements and (2) its treatment of interests (for example, common stock, a partnership interest or other means of exerting influence) in other entities, for example consolidation or use of the equity or cost methods of accounting. The accounting policy may also address the accounting treatment for intercompany accounts and transactions, noncontrolling interest, and the income statement treatment in consolidation for issuances of stock by a subsidiary. Use of Estimates Use of Estimates, Policy [Policy Text Block] Business Combinations Business Combinations Policy [Policy Text Block] Fair Value Measurements Fair Value Measurement, Policy [Policy Text Block] Foreign Currency Translations Foreign Currency Transactions and Translations Policy [Policy Text Block] Concentrations of Risk Concentration Risk, Credit Risk, Policy [Policy Text Block] Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Investments Investment, Policy [Policy Text Block] Accounts Receivable Receivables, Policy [Policy Text Block] Allowance for Doubtful Accounts Receivables, Trade and Other Accounts Receivable, Allowance for Doubtful Accounts, Policy [Policy Text Block] Inventory Inventory, Policy [Policy Text Block] Long-Lived Assets, including Property and Equipment Property, Plant and Equipment, Policy [Policy Text Block] Software Development Costs Software to be Sold, Leased, or Otherwise Marketed, Policy [Policy Text Block] Goodwill and Indefinite-Lived Intangible Assets Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block] Contract Liabilities, including Unearned Revenue Contract Liabilities, Policy [Policy Text Block] Contract Liabilities, Policy [Policy Text Block] Income Taxes Income Tax, Policy [Policy Text Block] Revenue Recognition Revenue from Contract with Customer [Policy Text Block] Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Fair Value of Financial Instruments Fair Value of Financial Instruments, Policy [Policy Text Block] Schedule of Inventory Schedule of Inventory, Current [Table Text Block] Property and Equipment, Net Property, Plant and Equipment [Table Text Block] Accounts Payable and Accrued Expenses Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] Interest income and other, net Interest and Other Income [Table Text Block] Supplemental Cash Flow Information Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Goodwill And Intangible Assets, Net Goodwill and Intangible Assets Disclosure [Text Block] Effective Income Tax Rate Reconciliation, Amount [Abstract] Effective Income Tax Rate Reconciliation, Amount [Abstract] Federal income tax Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount State income tax, net of federal benefit Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Foreign income tax rate differential Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount Foreign withholding tax Effective Income Tax Rate Reconciliation, Withholding Tax, Foreign, Amount Effective Income Tax Rate Reconciliation, Withholding Tax, Foreign, Amount Repatriation of foreign income, deemed and actual Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount Change in unrecognized tax benefits Effective Income Tax Rate Reconciliation, Change in Unrecognized Tax Benefits, Amount Effective Income Tax Rate Reconciliation, Change in Unrecognized Tax Benefits, Amount Change in valuation allowance Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount Equity-based compensation Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Compensation Cost, Amount Tax settlements Effective Income Tax Rate Reconciliation, Tax Settlement, Amount TiVo Acquisition-related items Effective Income Tax Rate Reconciliation, Acquisition of Business, Amount Effective Income Tax Rate Reconciliation, Acquisition of Business, Amount Entity rationalization Effective Income Tax Rate Reconciliation, Entity Rationalization, Amount Effective Income Tax Rate Reconciliation, Entity Rationalization, Amount Tax Act of 2017 Effective Income Tax Rate Reconciliation,Tax Cuts and Jobs Act of 2017, Amount Effective Income Tax Rate Reconciliation,Tax Cuts and Jobs Act of 2017, Amount Goodwill impairment Effective Income Tax Rate Reconciliation, Nondeductible Expense, Impairment Losses, Amount Other, net Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount Schedule of Segment Reporting Information Schedule of Segment Reporting Information, by Segment [Table Text Block] Contract Termination Costs [Member] Accrued restructuring costs Product [Member] Maximum [Member] Maximum [Member] Patents [Member] Patents [Member] Asset Acquisition [Axis] Asset Acquisition [Axis] Asset Acquisition [Axis] Asset Acquisition [Domain] Asset Acquisition [Domain] [Domain] for Asset Acquisition [Axis] Portfolio of Patents [Member] Portfolio of Patents [Member] Portfolio of Patents [Member] Goodwill, Impairment Loss Number of Patents Portfolio Acquired Number of Patents Portfolio Acquired Number of Patents Portfolio Acquired Asset Acquisition, Consideration Transferred Asset Acquisition, Consideration Transferred Asset Acquisition, Consideration Transferred Payments for purchase of patents Acquired finite-lived intangible assets weighted average useful life Acquired Finite-lived Intangible Assets, Weighted Average Useful Life Stated interest Interest Expense, Debt, Excluding Amortization Amortization of debt discount Amortization of Debt Discount (Premium) Amortization of debt issuance costs Amortization of Debt Issuance Costs Total interest expense Interest Expense, Debt Assets And Liabilities Measured And Recorded At Fair Value On A Recurring Basis Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] Summary Of Level 3 Auction Rate Securities Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Outstanding Debt Fair Value Schedule of Outstanding Debt Fair Value [Table Text Block] Schedule of outstanding debt fair value [Table Text Block] Quarterly Financial Data (Unaudited) Quarterly Financial Information [Text Block] Timing of Transfer of Good or Service [Axis] Timing of Transfer of Good or Service [Axis] Timing of Transfer of Good or Service [Domain] Timing of Transfer of Good or Service [Domain] Transferred at Point in Time [Member] Transferred at Point in Time [Member] Transferred over Time [Member] Transferred over Time [Member] Out-of-license settlements [Member] Timing of Transfer Out-of-License Settlements [Member] Timing of Transfer Out-of-License Settlements [Member] ASSETS Assets [Abstract] Current assets: Assets, Current [Abstract] Cash and cash equivalents Short-term marketable securities Marketable Securities, Current Accounts receivable, net Inventory Prepaid expenses and other current assets Total current assets Assets, Current Long-term marketable securities Marketable Securities, Noncurrent Property and equipment, net Intangible assets, net Goodwill Other long-term assets Total assets Assets LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] Current liabilities: Liabilities, Current [Abstract] Accounts payable and accrued expenses Unearned revenue Current portion of long-term debt Total current liabilities Liabilities, Current Taxes payable, less current portion Accrued Income Taxes, Noncurrent Unearned revenue, less current portion Deferred Revenue, Noncurrent Deferred tax liabilities, net Other long-term liabilities Other Liabilities, Noncurrent Total liabilities Liabilities Commitments and contingencies (Note 11) Commitments and Contingencies Stockholders' equity: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Preferred stock, $0.001 par value, 5,000 shares authorized; no shares issued or outstanding Preferred Stock, Value, Issued Common stock, $0.001 par value, 250,000 shares authorized; 125,781 shares issued and 123,975 shares outstanding as of December 31, 2018; and 123,385 shares issued and 122,116 shares outstanding as of December 31, 2017 Common Stock, Value, Issued Treasury stock, 1,806 shares and 1,269 shares as of December 31, 2018 and December 31, 2017, respectively, at cost Treasury Stock, Value Additional paid-in capital Additional Paid in Capital Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Total stockholders’ equity Total liabilities and stockholders’ equity Liabilities and Equity Options Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Beginning Balance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Forfeited and expired (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period Ending Balance (in shares) Vested and expected to vest (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Exercisable (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number Weighted-Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Beginning Balance (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Forfeited and expired (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price Ending Balance (in dollars per share)