Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Weighted average shares used in computation of net loss per share: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Trading Arrangement: Trading Arrangement [Axis] Maximum Maximum [Member] Statistical Measurement [Domain] Statistical Measurement [Domain] Title of 12(b) Security Title of 12(b) Security Document Fiscal Year Focus Document Fiscal Year Focus Adjustment to Compensation, Amount Adjustment to Compensation Amount Financial Instrument [Axis] Financial Instrument [Axis] Segment Reporting [Abstract] Schedule of Estimated Intangible Asset Amortization Expense Intangible Asset, Finite-Lived, and Capitalized Cost, Software to be Sold, Leased, or Marketed, Estimated Amortization Expense [Table Text Block] Schedule of Financial Assets Measured at Fair Value on Recurring Basis Fair Value, Assets Measured on Recurring Basis [Table Text Block] 2027 Lessee, Operating Lease, Liability, to be Paid, Year One Service condition satisfied (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Award Requisite Service Period Liabilities recorded Loss Contingency Accrual Restatement Determination Date Restatement Determination Date Thereafter Lessee Operating Lease Liability To Be Paid After Year Four Lessee, operating lease, liability, to be paid, after year four. Measurement Frequency [Axis] Measurement Frequency [Axis] Conversion price per share (in usd per share) Debt Instrument, Convertible, Conversion Price Amendment Flag Amendment Flag Current liabilities Liabilities, Current [Abstract] Entity Common Stock Shares Outstanding Entity Common Stock, Shares Outstanding Marketable securities, Gross Unrealized Losses Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax Loss Contingencies [Table] Loss Contingencies [Table] Leases [Abstract] Leases [Abstract] Severance and Related Charges Severance And Related Charges [Member] Severance and Related Charges. Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Marketable securities contractual maturities period Marketable Securities Contractual Maturities Period Marketable securities contractual maturities period. Schedule of Cash and Cash Equivalents Schedule of Cash and Cash Equivalents [Table Text Block] Entity Address, State or Province Entity Address, State or Province Foreign currency translation Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent PEO Total Compensation Amount PEO Total Compensation Amount Common stock par value (in usd per share) Common Stock, Par or Stated Value Per Share Debt Instrument, Redemption, Period [Axis] Debt Instrument, Redemption, Period [Axis] Outstanding restricted stock, unvested beginning balance (in shares) Outstanding restricted stock, unvested ending balance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Basic (in shares) Weighted-average common shares - Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Loss Contingencies [Line Items] Loss Contingencies [Line Items] Number of reportable segments Number of Reportable Segments Total current liabilities Liabilities, Current 2030 Lessee, Operating Lease, Liability, to be Paid, Year Four Entity Address, City or Town Entity Address, City or Town Rebecca Morrow June 9, 2026 Plan [Member] Rebecca Morrow June 9, 2026 Plan Outstanding restricted stock, Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Outstanding restricted stock, Vested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Class of Stock [Axis] Class of Stock [Axis] Intangible assets, net Net Intangible Asset, Finite-Lived, after Accumulated Amortization Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Debt issuance costs Debt Issuance Costs, Gross One Month Secured Overnight Financing Rate S O F R Overnight Index Swap Rate One Month Secured Overnight Financing Rate S O F R Overnight Index Swap Rate [Member] One month secured overnight financing rate overnight index swap rate. Level 2 Fair Value, Inputs, Level 2 [Member] Accumulated Amortization Intangible Asset, Finite-Lived, Accumulated Amortization Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Other Other Restructuring [Member] United States UNITED STATES Issuance of Class A non-voting common stock for vesting of restricted stock units and restricted stock awards, net (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Gross Debt Instrument [Table] Schedule of Long-Term Debt Instruments [Table] Schedule of Segment Reporting Information, by Segment Segment Reporting [Table Text Block] Amortization of debt issuance costs and debt discount (premium) Amortization of debt issuance costs Amortization of Debt Issuance Costs Use of Estimates Use of Estimates, Policy [Policy Text Block] Cumulative upward adjustments Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Cumulative Amount Total other comprehensive income (loss), net of tax Other comprehensive income (loss), net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Debt Instrument, Redemption, Period Two Debt Instrument, Redemption, Period Two [Member] Goodwill intangible assets Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill Net Carrying Amount Long-Term Debt Proceeds from issuance of notes, net of issuance costs Proceeds from Debt, Net of Issuance Costs Marketable securities contractual maturities Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five Schedule of Present Value of Operating Lease Liabilities Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Document Period End Date Document Period End Date Change in operating assets and liabilities, net of effect of acquisitions: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Net cash provided by (used in) investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Debt instrument, principal amount Principal Debt Instrument, Face Amount 2028 Lessee, Operating Lease, Liability, to be Paid, Year Two Net loss per share: Earnings Per Share, Basic [Abstract] Costs and expenses: Costs and Expenses [Abstract] Security Exchange Name Security Exchange Name Earnings Per Share [Line Items] Earnings Per Share [Line Items] Earnings per share. Treasury stock, at cost. 43,527 and 44,670 shares of Class A non-voting common stock at June 30, 2026 and December 31, 2025, respectively. Treasury Stock, Common, Value Effective rate (as a percent) Debt Instrument, Interest Rate, Effective Percentage Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Purchases of marketable securities Payments to Acquire Marketable Securities Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Shell Company Entity Shell Company Common Class B Class B voting common stock Common Class B [Member] Operating lease liabilities Operating Lease, Liability, Current Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Net Loss per Share Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Net loss per share attributable to Class A, Class B, and Class C common stockholders (Note 3): Earnings Per Share [Abstract] Sales of marketable securities Proceeds from Sale and Maturity of Marketable Securities Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Document Fiscal Period Focus Document Fiscal Period Focus Initial cost Equity Securities without Readily Determinable Fair Value, Initial Cost Equity Securities without Readily Determinable Fair Value, Initial Cost Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Total liabilities Liabilities Trading Symbol Trading Symbol Geographical [Domain] Geographical [Domain] Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Company Selected Measure Name Company Selected Measure Name Amounts reclassified from AOCI Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent Schedule of Restrictions on Cash and Cash Equivalents Restrictions on Cash and Cash Equivalents [Table Text Block] Number of share-based employee compensation plans Share Based Compensation Arrangement By Share Based Payment Award Number Of Share Based Employee Compensation Plans Share-based compensation arrangement by share-based payment award, number of share-based employee compensation plans. Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Amortization of debt issuance costs and debt discount (premium) Amortization of Debt Issuance Costs and Discounts Unvested RSUs and RSAs Unvested Restricted Stock Units And Restricted Stock Awards Not Subject To A Performance Condition [Member] Unvested restricted stock units and restricted stock awards not subject to a performance condition. Credit Facility [Domain] Credit Facility [Domain] Cash flows from operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] 2025 Stock Repurchase Plan 2025 Stock Repurchase Plan [Member] 2025 Stock Repurchase Plan Compensation Amount Outstanding Recovery Compensation Amount Individual: Individual [Axis] Diluted (in shares) Weighted-average common shares - Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Disaggregation Of Revenue [Line Items] Disaggregation of Revenue [Line Items] Purchases of strategic investments Payments To Acquire Strategic Investments Payments to acquire strategic investments. Entity Emerging Growth Company Entity Emerging Growth Company Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Repurchases of convertible notes Payments For Repurchase Of Convertible Notes Payments For Repurchase Of Convertible Notes Miscellaneous Miscellaneous [Member] Miscellaneous. U.S. government securities US Treasury Securities [Member] Entities [Table] Entities [Table] Douglas Hott June 2026 Plan [Member] Douglas Hott June 2026 Plan Less: imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Restricted Stock Units and Restricted Stock Awards Restricted Stock Units And Restricted Stock Awards [Member] Restricted stock units and restricted stock awards. Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Short-term debt, net Short-Term Debt Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Other Other Intangible Assets [Member] Operating cash outflows for operating leases Operating Lease, Payments Award Timing Predetermined Award Timing Predetermined [Flag] Treasury stock Treasury Stock, Common [Member] Intangible Asset, Goodwill and Other [Abstract] Intangible Asset, Goodwill and Other [Abstract] Outstanding letters of credit Letters of Credit Outstanding, Amount Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Stock-based compensation expense APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Level 1 Fair Value, Inputs, Level 1 [Member] Total lease payments Lessee, Operating Lease, Liability, to be Paid Conversion ratio Debt Instrument, Convertible, Conversion Ratio Weighted-average grant date fair value per restricted stock, unvested beginning balance (in usd per share) Weighted-average grant date fair value per restricted stock, unvested ending balance (in usd per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value All Executive Categories All Executive Categories [Member] Retirement of Class A non-voting common stock Stock Repurchased and Retired During Period, Value Operating lease liabilities Increase (Decrease) in Operating Lease Liability Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Other comprehensive income (loss), net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Plan Name [Domain] Plan Name [Domain] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Number of Class A Shares Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward] Operating lease right-of-use assets Operating Lease, Right-of-Use Asset Sales and marketing Selling and Marketing Expense Reissuances of Class A non-voting common stock for vesting of restricted stock units (in shares) Stock Issued During Period, Shares, Treasury Stock Reissued Schedule of Numerators and Denominators of Basic and Diluted Net Loss per Share Computations for Common Stock Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Segments and Geographic Information Segment Reporting [Text Block] Maturities of marketable securities Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale Amounts outstanding under the credit facility Long-Term Line of Credit Minimum Minimum [Member] Expiration Date Trading Arrangement Expiration Date Change in cash, cash equivalents, and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Excluding Exchange Rate Effect, Including Discontinued Operation Schedule of Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Denominator: Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Income Statement Location [Axis] Location, Statement of Income, Balance [Axis] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Credit facility expiration period ( in years) Line of Credit Facility, Expiration Period Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Convertible notes Convertible Debt, Fair Value Disclosures Preliminary settlement agreement amount Loss Contingency, Estimate of Possible Loss Other liabilities Business Combination, Consideration Transferred, Liabilities Incurred Business Combination [Line Items] Business Combination [Line Items] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Convertible Notes Convertible Notes [Member] Convertible Notes Common stock authorized (in shares) Common Stock, Shares Authorized Rebecca Morrow [Member] Rebecca Morrow Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table] Antidilutive Security, Excluded EPS Calculation [Table] Accumulated Other Comprehensive Income Loss [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Schedule Of Earnings Per Share [Table] Schedule Of Earnings Per Share [Table] Schedule of earnings per share. Unamortized (Discount) Premium Debt Instrument, Unamortized Discount (Premium), Net Exercise Price Award Exercise Price Schedule Of Restructuring And Related Costs [Table] Restructuring Cost [Table] Cash flows from investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Fair Value, Measurements, Recurring Fair Value, Recurring [Member] Segment Reporting [Line Items] Segment Reporting [Line Items] Share repurchase program, authorized amount Share Repurchase Program, Authorized, Amount Unrecognized compensation cost Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Document Quarterly Report Document Quarterly Report Convertible Notes (if-converted) Convertible Senior Notes If Converted [Member] Convertible senior notes if converted. Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Segments [Domain] Segments [Domain] Europe Europe [Member] Schedule of Long-Lived Assets by Geographic Areas Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Long-Lived Asset [Table Text Block] Debt Debt Disclosure [Text Block] Commitments due within two years Contractual Obligation Debt issuance costs Debt Issuance Costs, Net 2027 Notes Two Thousand Twenty Seven Convertible Senior Note [Member] Two Thousand Twenty Seven Convertible Senior Note. Schedule of Restructuring Charges (Benefits) Restructuring and Related Costs [Table Text Block] Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Schedule Of Business Acquisitions By Acquisition [Table] Business Combination [Table] Equity Component [Domain] Equity Component [Domain] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract] Total costs and expenses Costs and Expenses Adoption Date Trading Arrangement Adoption Date Debt instrument, interest rate (as a percent) Debt Instrument, Interest Rate, Stated Percentage Total stockholders’ equity Balance, beginning of period Balance, end of period Equity, Attributable to Parent Restructuring Type [Axis] Restructuring Type [Axis] Equity securities, cost or amortized cost Equity Securities, FV-NI, Current Assets Assets [Abstract] Title Trading Arrangement, Individual Title Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Marketable securities, Cost or Amortized Cost Debt Securities, Available-for-Sale, Amortized Cost Accounting Policies [Abstract] Accounting Policies [Abstract] Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Present value of lease liabilities Operating Lease, Liability Accumulated Other Comprehensive Income Loss [Abstract] Accumulated Other Comprehensive Income Loss [Abstract] Accumulated other comprehensive income (loss). Insider Trading Policies and Procedures [Line Items] Other Proceeds from (Payment for) Other Financing Activity Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Patents Patents [Member] Type of Restructuring [Domain] Type of Restructuring [Domain] Business Combination [Domain] Business Combination [Domain] 2026 Acquisitions 2026 Acquisitions [Member] 2026 Acquisitions Revenues From External Customers And Long Lived Assets [Line Items] Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Number of operating segments Number of Operating Segments Anti-dilutive securities excluded from calculation of diluted net loss per share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Schedule of Changes in Carrying Amount of Goodwill Goodwill [Table Text Block] Schedule of Potentially Dilutive Shares Excluded from Calculation of Diluted Net Loss per Share Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Entity Central Index Key Entity Central Index Key Common stock, value Common Stock, Value, Outstanding All Adjustments to Compensation All Adjustments to Compensation [Member] Business Combination [Axis] Business Combination [Axis] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Indemnification Agreement Indemnification Agreement [Member] Other Stockholders' Equity, Other Stockholders’ equity Equity, Attributable to Parent [Abstract] Income Statement [Abstract] Income Statement [Abstract] Document Transition Report Document Transition Report Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Gains (losses) on strategic investments, net Gain (Loss) on Investments Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Schedule of Intangible Assets Intangible Asset, Finite-Lived [Table Text Block] Basis spread on variable interest rate (percentage) Debt Instrument, Basis Spread on Variable Rate City Area Code City Area Code Variable Rate [Domain] Variable Rate [Domain] Debt Instrument, Redemption, Period One Debt Instrument, Redemption, Period One [Member] Accumulated other comprehensive income AOCI Attributable to Parent [Member] All Individuals All Individuals [Member] Schedule of Disaggregation of Revenue by Geography Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue [Table Text Block] Name Forgone Recovery, Individual Name Weighted average recognition period Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Operating leases, terms Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract Statement [Line Items] Statement [Line Items] Sterling Overnight Index Sterling Overnight Index [Member] Sterling overnight index. Total assets Assets 2028 Notes Two Thousand Twenty Eight Senior Convertible Notes [Member] 2028 Senior Convertible Notes. 2024 Stock Repurchase Plan 2024 Stock Repurchase Plan [Member] 2024 Stock Repurchase Plan Gains (losses) recognized on publicly traded equity securities sold during the period, net Equity Securities, FV-NI, Realized Gain (Loss) Convertible Debt Convertible Debt [Member] February 2025 Note Repurchases February 2025 Note Repurchases [Member] February 2025 Note Repurchases Interest expense Interest Expense, Nonoperating Schedule of Total Stock-based Compensation Expense Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] 2026 Stock Repurchase Plan 2026 Stock Repurchase Plan [Member] 2026 Stock Repurchase Plan Carrying value Equity Securities without Readily Determinable Fair Value, Amount Marketable securities, Gross Unrealized Gains Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax Other comprehensive loss before reclassifications OCI, before Reclassifications, Net of Tax, Attributable to Parent Other assets Increase (Decrease) in Other Operating Assets PEO PEO [Member] Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] Stock-based compensation expense Share-Based Payment Arrangement, Expense Douglas Hott May 2026 Plan [Member] Douglas Hott May 2026 Plan Retirement of Class A non-voting common stock (in shares) Retirement of Class A non-voting common stock (in shares) Stock Repurchased and Retired During Period, Shares Marketable securities Marketable Securities, Current Other liabilities Other Liabilities, Noncurrent Goodwill Goodwill, beginning balance Goodwill, ending balance Goodwill Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Goodwill acquired Goodwill, Acquired During Period Weighted-average grant date fair value per restricted stock, Granted (in usd 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 Common Class C Class C voting common stock Common Class C [Member] Gains (losses) on publicly traded equity securities, net Equity Securities, FV-NI, Gain (Loss) Accumulated deficit Retained Earnings [Member] Operating lease liabilities, noncurrent Operating Lease, Liability, Noncurrent Operating expenses Operating Expenses Money market funds Money Market Funds [Member] Revolving Credit Facility Revolving Credit Facility [Member] Weighted-average grant date fair value per restricted stock, Forfeited (in usd per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Marketable Securities AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member] Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Common stock outstanding (in shares) Common stock, beginning of period (in shares) Common stock, end of period (in shares) Common Stock, Shares, Outstanding Award Timing Disclosures [Line Items] Foreign Currency Translation Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Corporate debt securities Corporate Debt Securities [Member] Diluted (in usd per share) Earnings Per Share, Diluted Accumulated Other Comprehensive Income Loss [Table] Accumulated Other Comprehensive Income (Loss) [Table] Entity Current Reporting Status Entity Current Reporting Status Net cash used in financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Total Shareholder Return Amount Total Shareholder Return Amount Prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Unrealized gains on strategic investments still held at the reporting date Unrealized Gain (Loss) on Investments Thereafter Finite Lived Intangible Assets Amortization Expense After Year Four Finite lived intangible assets amortization expense after year four. Amortization of intangible assets Intangible Asset, Finite-Lived, Amortization Expense Intangible Asset, Finite-Lived [Line Items] Intangible Asset, Finite-Lived [Line Items] Research and development Research and Development Expense Adjustments to reconcile net loss to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Share-Based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Property and equipment, net Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization Revenue Total revenue Revenue from Contract with Customer, Excluding Assessed Tax Cash flows from financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Debt Instrument, Redemption, Period Three Debt Instrument, Redemption, Period Three [Member] Annual commitment fee Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Financial Instruments [Domain] Financial Instruments [Domain] Numerator: Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Intangible Asset, Finite-Lived, Class [Axis] Intangible Asset, Finite-Lived, Class [Axis] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Goodwill and Intangible Assets Intangible Asset and Goodwill [Text Block] Underlying Securities Award Underlying Securities Amount Revenue Revenue from Contract with Customer [Text Block] Depreciation and amortization Cost, Depreciation and Amortization Other Payment for (Proceeds from) Other Investing Activity Weighted-average discount rate Operating Lease, Weighted Average Discount Rate, Percent Gain (loss) on repurchase of debt instrument Gain (Loss) on Repurchase of Debt Instrument Schedule of RSU and RSA Activity Nonvested Restricted Stock Shares Activity [Table Text Block] Segment Reporting [Table] Segment Reporting [Table] Content and developer partner costs Content And Developer Partner Costs Content And Developer Partner Costs Cash Cash [Member] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] All Trading Arrangements All Trading Arrangements [Member] Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Operating loss Operating Income (Loss) Current Fiscal Year End Date Current Fiscal Year End Date Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Business Acquisitions Business Combination [Text Block] Total long-lived assets Long-Lived Asset, Excluding Financial Instrument, Customer Relationship, Mortgage Servicing Right, Deferred Policy Acquisition Cost, and Deferred Tax Asset, Amount Repurchases of Class A non-voting common stock (in shares) Stock Repurchased During Period, Shares Lease not yet commenced amount Unrecorded Unconditional Purchase Obligation Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Entity File Number Entity File Number Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Common stock issued (in shares) Common Stock, Shares, Issued Measure: Measure [Axis] Strategic Investments Equity Method Investments and Joint Ventures Disclosure [Text Block] Advertising partner and other costs Advertising Partner And Other Costs Advertising Partner And Other Costs Amortization of debt discount (premium) Amortization of Debt Discount (Premium) Entity Information [Line Items] Entity Information [Line Items] Treasury stock, shares (in shares) Treasury stock, beginning of period (in shares) Treasury stock, end of period (in shares) Treasury Stock, Common, Shares Contractual obligation maturity Contractual Obligation Maturity Contractual Obligation Maturity Operating lease right-of-use assets Increase Decrease In Operating Lease Right Of Use Asset Increase decrease in operating lease right of use asset. Debt instrument, increase (decrease), net Debt Instrument, Increase (Decrease), Net Accumulated Other Comprehensive Income (Loss) Comprehensive Income (Loss) Note [Text Block] Equity Components [Axis] Equity Components [Axis] Debt instrument, repurchase amount Debt Instrument, Repurchase Amount Accounts receivable, net of allowance Increase (Decrease) in Accounts Receivable Product and Service [Domain] Product and Service [Domain] Disaggregation Of Revenue [Table] Disaggregation of Revenue [Table] Entity Interactive Data Current Entity Interactive Data Current Cash, equity securities and marketable securities, Total Estimated Fair Value Cash And Available For Sale Debt Securities Fair Value Cash and available for sale debt securities fair value. Variable Rate [Axis] Variable Rate [Axis] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Rest of World Rest of world Rest Of World [Member] Rest of World. Entity Small Business Entity Small Business Total comprehensive loss Comprehensive Income (Loss), Net of Tax, Attributable to Parent 2029 Lessee, Operating Lease, Liability, to be Paid, Year Three Termination Date Trading Arrangement Termination Date Weighted- Average Remaining Useful Life (Years) Intangible Asset, Finite-Lived, Acquired, Weighted-Average Amortization Period Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Fair Value, Recurring and Nonrecurring [Table] Description of Business and Summary of Significant Accounting Policies Business Description and Accounting Policies [Text Block] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Other assets Other Assets, Noncurrent Document Type Document Type Debt instrument, repurchased face amount Debt Instrument, Repurchased Face Amount Cash paid for acquisitions, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired 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] Accrued expenses and other current liabilities Accrued Liabilities, Current Gain on extinguishment of debt Gain on extinguishment of debt Gain (Loss) on Extinguishment of Debt Fair Value as of Grant Date Award Grant Date Fair Value Repayment of convertible notes Repayments of Convertible Debt Debt instrument, redemption price percentage Debt Instrument, Redemption Price, Percentage Pending Matters Pending Matters [Member] Pending Matters Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Share repurchase program, remaining authorized, amount Share Repurchase Program, Remaining Authorized, Amount Arrangement Duration Trading Arrangement Duration Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Local Phone Number Local Phone Number Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Loss before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Rebecca Morrow June 2026 Plan [Member] Rebecca Morrow June 2026 Plan Commitments and contingencies (Note 8) Commitments and Contingencies Gross Carrying Amount Intangible Asset, Finite-Lived, before Accumulated Amortization Debt Instrument, Redemption, Period [Domain] Debt Instrument, Redemption, Period [Domain] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] 2030 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Four Cash, equity securities and marketable securities, Cost or Amortized Cost Cash And Available For Sale Debt Securities Cost And Amortized Cost Basis Cash and available for sale debt securities cost and amortized cost basis. Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Executive Category: Executive Category [Axis] Goodwill [Roll Forward] Goodwill [Roll Forward] Liabilities and Stockholders’ Equity Liabilities and Equity [Abstract] Intangible Asset, Finite-Lived, Class [Domain] Intangible Asset, Finite-Lived, Class [Domain] 2030 Notes Two Thousand Thirty Senior Convertible Notes [Member] Two Thousand Thirty Senior Convertible Notes Award Type [Domain] Award Type [Domain] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Remainder of 2026 Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year Fair Value Measurements Fair Value Disclosures [Text Block] Redemption price, principal (as a percent) Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed 2027 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year One Repurchases of Class A non-voting common stock (in shares) Treasury Stock, Shares, Acquired PEO Name PEO Name Geographical [Axis] Geographical [Axis] Accrued expenses and other current liabilities Increase (Decrease) in Accrued Liabilities Restricted cash, included in other assets Restricted Cash Infrastructure costs Infrastructure Costs Infrastructure Costs Proceeds from issuance of convertible notes, net of issuance costs Proceeds From Debt Net Of Issuance Costs And Capped Call Transaction Costs Proceeds from debt net of issuance costs and capped call transaction costs. Schedule of Debt Conversions Schedule of Debt Conversions [Table Text Block] Cumulative downward adjustments, including impairments Equity Securities Without Readily Determinable Fair Value, Downward Price Adjustment And Impairment Loss, Cumulative Amount Equity Securities Without Readily Determinable Fair Value, Downward Price Adjustment And Impairment Loss, Cumulative Amount Other segment items Segment Reporting, Other Segment Item, Amount Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Stockholders' Equity Stockholders Equity And Compensation Related Costs Share Based Payments [Text Block] Stockholders equity and compensation related costs share based payments text block. Entity Tax Identification Number Entity Tax Identification Number Douglas Hott [Member] Douglas Hott Total interest expense Interest Expense, Debt Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Repurchases of Class A non-voting common stock Stock repurchased during period Treasury Stock, Value, Acquired, Cost Method Cash, cash equivalents, and restricted cash, beginning of period Cash, cash equivalents, and restricted cash, end of period Total cash, cash equivalents, and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Unrealized losses, including impairments, on strategic investments still held at the reporting date Unrealized Gain (Loss) On Investments, Including Impairment Unrealized Gain (Loss) On Investments, Including Impairment Reissuances of Class A non-voting common stock for vesting of restricted stock units Stock Issued During Period, Value, Treasury Stock Reissued Schedule Of Finite Lived Intangible Assets [Table] Intangible Asset, Finite-Lived [Table] Accounts payable Increase (Decrease) in Accounts Payable Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Other revenue Other Revenue [Member] Other Revenue Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Common stock shares issued not disclosed Common Stock, Shares Issued, Not Disclosed Common Stock, Shares Issued, Not Disclosed Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [Member] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Rebecca Morrow June 2026 Plan, Class A Common Stock Subject to Restricted Stock Unit Award [Member] Rebecca Morrow June 2026 Plan, Class A Common Stock Subject to Restricted Stock Unit Award Measurement Frequency [Domain] Measurement Frequency [Domain] Debt Instrument [Axis] Debt Instrument [Axis] Common Class A Non Voting Class A non-voting common stock Common Class A Non Voting [Member] Common class A non voting. Payment to acquire business Payments to Acquire Businesses, Gross Stock-based compensation Share-Based Payment Arrangement, Noncash Expense Stock-based compensation and related payroll and other tax expense Labor and Related Expense 2028 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Two Schedule of Debt Schedule of Debt [Table Text Block] Leases Lessee, Operating Leases [Text Block] Long-Term Debt, Type [Domain] Long-Term Debt, Type [Domain] Basic (in usd per share) Earnings Per Share, Basic Deferred revenue Contract with Customer, Liability, Current Repurchases of Class A non-voting common stock Payments for Repurchase of Common Stock Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Insider Trading Arrangements [Line Items] Long-term debt, net Long-Term Debt, Excluding Current Maturities Cost of revenue Cost of Revenue Award Type [Axis] Award Type [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Accounts receivable, net of allowance Accounts Receivable, after Allowance for Credit Loss, Current Accumulated deficit Retained Earnings (Accumulated Deficit) Unrealized gain (loss) on marketable securities, net of tax Other Comprehensive Income (Loss), Available-for-Sale Securities Adjustment, Net of Tax, Portion Attributable to Parent Restructuring and Related Activities [Abstract] Restructuring and Related Activities [Abstract] Product and Service [Axis] Product and Service [Axis] Reportable Segment Reportable Segment [Member] Reportable Segment Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Common Stock Common Stock [Member] Marketable securities, Total Estimated Fair Value Marketable securities, total estimated fair value Debt Securities, Available-for-Sale 2026 Notes Two Thousand Twenty Six Senior Convertible Notes [Member] Two thousand twenty six senior convertible notes. Operating lease cost Operating Lease, Cost Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover [Abstract] Cover [Abstract] Percentage of employee reduction in reprioritization plan Restructuring and Related Cost, Number of Positions Eliminated, Period Percent United Kingdom UNITED KINGDOM Contractual interest expense Interest Expense, Debt, Excluding Amortization Schedule of Strategic Investments Equity Securities without Readily Determinable Fair Value [Table Text Block] Foreign currency translation Goodwill, Foreign Currency Translation, Gain (Loss) Equity Awards Adjustments Equity Awards Adjustments [Member] Schedule of Convertible Notes Convertible Debt [Table Text Block] Total liabilities and stockholders’ equity Liabilities and Equity Gains recognized on strategic investments sold during the period, net Realized Investment Gains (Losses) Stock options Share-Based Payment Arrangement, Option [Member] Schedule Of Revenues From External Customers And Long Lived Assets [Table] Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Table] Segments [Axis] Segments [Axis] Other liabilities Increase (Decrease) in Other Operating Liabilities Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Restructuring charges Restructuring Charges Plan Name [Axis] Plan Name [Axis] Tabular List, Table Tabular List [Table Text Block] RSUs and RSAs Granted after February 2018 Restricted Stock Units And Restricted Stock Granted After February Two Thousand Eighteen [Member] Restricted stock units and restricted stock granted after February two thousand eighteen. Additional paid-in capital Additional Paid in Capital Other income (expense), net Other Nonoperating Income (Expense) 2029 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Three Remainder of 2026 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Remainder of Fiscal Year Name Awards Close in Time to MNPI Disclosures, Individual Name Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Outstanding restricted stock, Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period General and administrative General and Administrative Expense Advertising revenue Advertising Revenue [Member] Advertising Revenue Adjustment to Compensation: Adjustment to Compensation [Axis] Class of Stock [Domain] Class of Stock [Domain] Restructuring Cost And Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Interest paid, excluding capitalized interest, operating activity Interest Paid, Excluding Capitalized Interest, Operating Activity Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Cap price, net cost Debt Instrument Cap Call Transaction Cap Price Net Cost Debt instrument, cap call transaction cap price, net cost. Credit Facility [Axis] Credit Facility [Axis] Restructuring Restructuring and Related Activities Disclosure [Text Block] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Name Measure Name Income Taxes Income Tax Disclosure [Text Block] Accounts payable Accounts Payable, Current Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Other Other Noncash Income (Expense) Debt instrument, covenant, minimum liquidity amount Debt Instrument, Covenant, Minimum Liquidity Amount Debt Instrument, Covenant, Minimum Liquidity Amount Debt Instrument [Line Items] Debt Instrument [Line Items] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Purchase price consideration Business Combination, Consideration Transferred Additional paid-in capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Schedule of Weighted Average Remaining Lease Term and Discount Rate Related to Operating Leases Summary Of Operating Lease Term And Discount Rate Table [Table Text Block] Summary of operating lease term and discount rate. Deferred payments for acquisitions Payment For Deferred Acquisition Payments Payment For Deferred Acquisition Payments Name Trading Arrangement, Individual Name 2034 Notes Two Thousand Thirty Four Senior Notes [Member] Two Thousand Thirty Four Senior Notes Cash and cash equivalents Cash and Cash Equivalent Losses (gains) on debt and equity securities, net Debt and Equity Securities, Gain (Loss) Company Selected Measure Amount Company Selected Measure Amount Unrealized gains (losses) on publicly traded equity securities still held at the reporting date, net Equity Securities, FV-NI, Unrealized Gain (Loss) August 2025 Note Repurchases August 2025 Note Repurchases [Member] August 2025 Note Repurchases Equity Method Investments and Joint Ventures [Abstract] Equity Method Investments and Joint Ventures [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization Schedule of Gain (Loss) on Strategic Investments Gain (Loss) on Securities [Table Text Block] Secured Overnight Financing Rate (SOFR) Secured Overnight Financing Rate (SOFR) [Member] Cap price, per share (in usd per share) Debt Instrument Cap Call Transaction Cap Price Per Share Debt instrument, cap call transaction cap price, per share. Current assets Assets, Current [Abstract] Weighted-average remaining lease term Operating Lease, Weighted Average Remaining Lease Term Non-PEO NEO Non-PEO NEO [Member] Senior Notes Senior Notes [Member] Entity Address, Address Line One Entity Address, Address Line One Lease liabilities arising from obtaining operating lease right-of-use assets Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Weighted-average grant date fair value per restricted stock, Vested (in usd 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 North America North America [Member] Income tax expense Income tax expense Income Tax Expense (Benefit) Weighted- Average Grant Date Fair Value Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Weighted Average Grant Date Fair Value [Abstract] Share based compensation arrangement by share based payment award, equity instruments other than options, weighted average grant date fair value. Technology Technology-Based Intangible Assets [Member] Award Timing Method Award Timing Method [Text Block] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] AOCI Attributable to Parent, Net of Tax [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Net loss Net loss Net Income (Loss) Attributable to Parent Long-Term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Unamortized Debt Issuance Costs Unamortized Debt Issuance Expense Statement [Table] Statement [Table] Restatement Determination Date: Restatement Determination Date [Axis] Schedule of Changes in Accumulated Other Comprehensive Income (Loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] 2033 Notes Two Thousand Thirty Three Senior Notes [Member] Two Thousand Thirty Three Senior Notes Issuance of Class A non-voting common stock for vesting of restricted stock units and restricted stock awards, net Stock Issued During Period, Value, Restricted Stock Award, Gross Interest income Investment Income, Interest Overnight Funding Rate Fed Funds Effective Rate Overnight Index Swap Rate [Member] Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Stock-Based Compensation Expense Stock Based Compensation Expense Benefit [Member] Stock-based compensation expense (benefit). Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block]