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[Domain] Measurement Frequency [Domain] Aggregate Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value [Abstract] Concentration risk, percentage Concentration Risk, Percentage Entity File Number Entity File Number Business Acquisition [Axis] Business Acquisition [Axis] Geographical [Domain] Geographical [Domain] Covenant Compliance Period Three Covenant Compliance Period Three [Member] Covenant Compliance Period Three [Member] Minimum commitment amount Long-term Purchase Commitment, Amount Deferred revenue Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Deferred Revenue Statement [Line Items] Statement [Line Items] Schedule of Antidilutive Securities Excluded from Computation of Diluted Net Loss Per Share Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Percent of company owned by 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Entity Small Business Entity Small Business Issued in merger plus acceleration (in shares) Business Acquisition, Equity Interest Issued or Issuable, Number of Shares, Additionally With Acceleration Business Acquisition, Equity Interest Issued or Issuable, Number of Shares, Additionally With Acceleration Cost of revenue Cost of Sales [Member] Vesting [Domain] Vesting [Domain] Depreciation and amortization Depreciation, Depletion and Amortization Entity Filer Category Entity Filer Category Cash and cash equivalents Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents TOTAL LIABILITIES Liabilities Entity Address, City or Town Entity Address, City or Town Restricted stock units assumed in merger (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Assumed In Period In Merger, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by 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Document Fiscal Year Focus Number of Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Internal use software development costs, net Internal Use Software Development Costs, Net The carrying amount of internal use software development costs net of accumulated amortization as of the balance sheet date. 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[Abstract] Income Statement [Abstract] Restricted stock units assumed in merger (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Assumed In Period In Merger Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Assumed In Period In Merger Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Condensed Balance Sheet Statements, Captions [Line Items] Condensed Balance Sheet Statements, Captions [Line Items] Lease liabilities, non-current Operating Lease, Liability, Noncurrent 2024 Finite-Lived Intangible Asset, Expected Amortization, Year Four Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Intangible assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles Nonvested Restricted Stock Shares Activity Nonvested Restricted Stock Shares Activity [Table Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Current assets: Assets, Current [Abstract] Adjusted Quick Ratio Debt Instrument Adjusted Quick Ratio1 Debt Instrument Adjusted Quick Ratio1 Non-cash stock-based compensation (double-trigger acceleration and severance) Non-cash stock-based compensation Restructuring Reserve And Merger Related Costs, Settled without Cash Restructuring Reserve And Merger Related Costs, Settled without Cash Comprehensive loss Comprehensive Income (Loss), Net of Tax, Attributable to Parent Dividend yield Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Preferred stock, par value (usd per share) Preferred Stock, Par or Stated Value Per Share Restructuring Reserve [Roll Forward] Restructuring Reserve [Roll Forward] Telaria Telaria [Member] Telaria [Member] Payment terms Revenue, Payment Terms Revenue, Payment Terms Purchases of property and equipment 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Conversion of Stock, Amount Converted Business Combination, Consideration Transferred, Conversion of Stock, Amount Converted Stock options exchanged pre-acquisition Business Combination, Consideration Transferred, Equity Interests Issued and Issuable, Stock Options Exchanged Pre-Acquisition Business Combination, Consideration Transferred, Equity Interests Issued and Issuable, Stock Options Exchanged Pre-Acquisition Debt outstanding amount Long-term Debt Contract with Customer, Sales Channel [Axis] Contract with Customer, Sales Channel [Axis] Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Condensed Balance Sheet Statement [Table] Condensed Balance Sheet Statement [Table] Lease Obligations Lessee, Operating Leases [Text Block] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Debt and Lease Obligation Debt and Lease Obligation City Area Code City Area Code Customer relationships Customer Relationships [Member] Share-based Payment 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[Domain] Accounts Receivable, Allowance for Credit Loss Accounts Receivable, Allowance for Credit Loss [Table Text Block] Lease liabilities, current Operating Lease, Liability, Current Unrecognized employee stock-based compensation Share-based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount Canceled (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 Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] United States UNITED STATES Exercised (usd per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Fair Value Measurements Fair Value Disclosures [Text Block] OPERATING ACTIVITIES: Net Cash Provided by (Used in) Operating 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Customer [Domain] Customer [Domain] Business Acquisition [Line Items] Business Acquisition [Line Items] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Weighted average discount rate Operating Lease, Weighted Average Discount Rate, Percent Other liabilities Increase (Decrease) in Other Operating Liabilities Accounts Receivable, Allowance for Credit Loss [Roll Forward] Accounts Receivable, Allowance for Credit Loss [Roll Forward] Capitalized debt issuance costs Debt Issuance Costs, Net Weighted- Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] CTV Connected Television [Member] Connected Television Technology and development Research and Development Expense [Member] Accounts receivable, net Accounts Receivable, after Allowance for Credit Loss, Current Total lease payments (undiscounted) Lessee, Operating Lease, Liability, to be Paid ESPP 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Acquisition, Pro Forma Earnings Per Share, Basic Goodwill Goodwill Other comprehensive loss Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Other liabilities, non-current Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Other (income) expense: Nonoperating Income (Expense) [Abstract] Significant Other Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Vesting [Axis] Vesting [Axis] Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period General and administrative General and Administrative Expense [Member] Contra seller payable Accounts Payable, Seller Accounts Payable, Seller Schedule of Antidilutive 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previous write-offs Accounts Receivable, Allowance for Credit Loss, Recovery Sales and marketing Selling and Marketing Expense Common stock, shares, issued and outstanding (in shares) Business Combination, Consideration Transferred, Equity Interests Issued and Issuable, Entity Shares Converted Per Acquiree Share Business Combination, Consideration Transferred, Equity Interests Issued and Issuable, Entity Shares Converted Per Acquiree Share Covenant Compliance Period Two Covenant Compliance Period Two [Member] Covenant Compliance Period Two [Member] Lease liabilities - non-current portion Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Lease, Noncurrent Liabilities Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Lease, Noncurrent Liabilities Cash paid for restructuring costs Payments For Restructuring And Merger Related Costs Payments For Restructuring And Merger Related Costs Net cash used in financing 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