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75010 - Statement - Consolidated Balance Sheets
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75030 - Statement - Consolidated Income Statements
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995455 - Disclosure - Cybersecurity Risk Management, Strategy and Governance
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995465 - Disclosure - Organization and Business Description
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995475 - Disclosure - Summary of Significant Accounting Policies
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995575 - Disclosure - Earnings Per Share
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995625 - Disclosure - Subsequent Event
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995765 - Disclosure - Quarterly Financial Results (unaudited) (Tables)
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995775 - Disclosure - Organization and Business Description - Additional Information (Details)
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995785 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Details)
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995795 - Disclosure - Summary of Significant Accounting Policies - Additional Information 1 (Details)
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995835 - Disclosure - Discontinued Operations - Summary of Major Classes of Assets and Liabilities of Discontinued Operations (Details)
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995855 - Disclosure - Discontinued Operations - Summary of Major Classes of Income Statements from Discontinued Operations (Details)
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995865 - Disclosure - Discontinued Operations - Summary of Significant Non-cash Items and Capital Expenditures of Discontinued Operations (Details)
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995875 - Disclosure - Discontinued Operations - Summary of Significant Non-cash Items and Capital Expenditures of Discontinued Operations (Parenthetical) (Details)
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995885 - Disclosure - Revenue Recognition - Additional Information (Details)
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995895 - Disclosure - Fair Value of Financial Instruments - Schedule of Fair Value Levels, Assets Measured at Fair Value on Recurring Basis (Details)
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995945 - Disclosure - Intangible Assets and Goodwill - Summary of Other Intangible Assets (Details)
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995955 - Disclosure - Intangible Assets and Goodwill - Summary of Estimated Amortization Expense of Intangible Assets (Details)
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995965 - Disclosure - Intangible Assets and Goodwill - Summary of Changes in Carrying Value of Goodwill (Details)
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995975 - Disclosure - Accrued Expenses, Accrued Income Taxes and Other Current Liabilities - Schedule of Accrued Expenses, Accrued Income Taxes and Other Current Liabilities (Details)
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995985 - Disclosure - Accrued Expenses, Accrued Income Taxes and Other Current Liabilities - Additional Information (Details)
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995995 - Disclosure - Debt - Additional Information (Details)
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996005 - Disclosure - Commitments and Contingencies - Additional Information (Details)
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996015 - Disclosure - Commitments and Contingencies - Summary of Future Minimum Lease Payments (Details)
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996035 - Disclosure - Stock-based Compensation - Additional Information (Details)
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996045 - Disclosure - Stock-based Compensation - Summary of Stock Option Activity (Details)
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996075 - Disclosure - Stock-based Compensation - Summary of Allocation of Stock-based Compensation Expense (Details)
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996085 - Disclosure - Stock-based Compensation - Summary of Shares of Common Stock Reserved for Future Issuance (Details)
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996095 - Disclosure - Earnings Per Share - Additional Information (Details)
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996105 - Disclosure - Earnings Per Share - Schedule of Reconciliation of Numerator and Denominator Used in Calculation of Basic and Diluted Net Income Per Share (Details)
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996115 - Disclosure - Earnings Per Share - Schedule of Reconciliation of Numerator and Denominator Used in Calculation of Basic and Diluted Net Income Per Share (Details) 2
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996125 - Disclosure - Earnings Per Share - Schedule of Potentially Dilutive Common Stock Equivalents Excluded from Calculation of Diluted Weighted-average Shares Outstanding (Details)
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996135 - Disclosure - Income Taxes - Schedule of Domestic and Foreign Components of Income Before Income Taxes (Details)
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996145 - Disclosure - Income Taxes - Schedule of Provision for Income Taxes (Details)
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996155 - Disclosure - Income Taxes - Summary of Income Taxes Paid (Net of Refunds) (Details)
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996165 - Disclosure - Income Taxes - Schedule of Effective Tax Rates (Details)
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996175 - Disclosure - Income Taxes - Additional Information (Details)
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996185 - Disclosure - Income Taxes - Schedule of Income Tax Effect of Each Type of Temporary Difference and Carryforward (Details)
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996195 - Disclosure - Income Taxes - Schedule of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns Roll Forward (Details)
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996205 - Disclosure - Segment and Geographic Information - Additional Information (Details)
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996215 - Disclosure - Segment and Geographic Information - Summary of Revenue by Geographical Region (Details)
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996225 - Disclosure - Employee Benefit Plans - Additional Information (Details)
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996235 - Disclosure - Quarterly Financial Results (unaudited) - Summary of Results from Operations (Details)
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996245 - Disclosure - Subsequent Event - Additional Information (Details)
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Repurchase of redeemable noncontrolling interest
Repurchase of redeemable noncontrolling interest
Payments for Repurchase of Redeemable Noncontrolling Interest
Vested
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value
Proceeds from sale of property and equipment
Proceeds from Sale of Property, Plant, and Equipment
Proceeds from Sale of Property, Plant, and Equipment, Total
Minimum percentage of tax position realized upon settlement.
Minimum Percentage of Tax Position Realized Upon Settlement
Minimum percentage of tax position realized upon settlement
Segments [Domain]
Foreign
Income (Loss) from Continuing Operations before Income Taxes, Foreign
Capitalized Website Development
Internal Use Software
Software Development [Member]
Net income from continuing operations
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest
Net income from continuing operations
Net income from continuing operations - basic and diluted
Concentration Risk Type
Concentration Risk Type [Axis]
Deferred tax assets:
Deferred Tax Assets, Gross [Abstract]
State of incorporation
Entity Incorporation, State or Country Code
Entity Incorporation, State or Country Code
Preferred Stock, Shares Issued, Total
Preferred stock, shares issued
Preferred Stock, Shares Issued
Capitalized Computer Software, Gross
Capitalized website development cost
Software and website development costs capitalized before impairments and disposals
Disposal Group, Including Discontinued Operation, Inventory, Current
Inventory
Tax Credits
Effective Income Tax Rate Reconciliation, Tax Credit, Amount [Abstract]
Increase (Decrease) in Accounts Payable, Total
Accounts payable
Increase (Decrease) in Accounts Payable
Plan Name [Axis]
Plan Name
Entity Current Reporting Status
Entity Current Reporting Status
Increase in borrowing capacity equal to percentage of four quarter EBDITA.
Increase In Borrowing Capacity Equal To Percentage Of Four Quarter EBDITA
Increase in borrowing capacity equal to percentage of four quarter EBDITA
Operating Expenses [Abstract]
Operating expenses
Accounts receivable, net of allowance for doubtful accounts of $92
Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Receivable, Net
Significant Other Observable Inputs (Level 2 Inputs)
Fair Value, Inputs, Level 2 [Member]
Valuation Allowance, net
Deferred Tax Assets, Net of Valuation Allowance
Weighted-Average Exercise Price for Equity
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Commitments and Contingencies
Commitments and Contingencies Disclosure [Text Block]
Common stock, shares authorized
Common Stock, Shares Authorized
Finite-Lived Intangible Asset, Expected Amortization, Year Four
2029
Unvested outstanding, balance
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Nonvested
Earnings Per Share, Basic [Abstract]
Basic
Net income per share attributable to common stockholders Basic
Document Fiscal Period Focus
Document Fiscal Period Focus
Amortization expense
Capitalized Computer Software, Amortization
Accrued tax distributions to redeemable noncontrolling interest holders current.
Accrued Tax Distributions To Redeemable Noncontrolling Interest Holders Current
Accrued tax distributions to redeemable noncontrolling interest holders
Revenue from Contract with Customer [Abstract]
Entity Shell Company
Entity Shell Company
Payment of tax distribution to redeemable noncontrolling interest holders.
Payment of Tax Distribution to Redeemable Noncontrolling Interest Holders
Payment of tax distributions to redeemable noncontrolling interest holders
Cash and Cash Equivalents, at Carrying Value, Ending Balance
Cash and Cash Equivalents, at Carrying Value, Beginning Balance
Cash and Cash Equivalents, at Carrying Value, Total
Cash and cash equivalents
Cash and Cash Equivalent
Discontinued Operations [Member]
Discontinued Operations
Operating Lease, Impairment Loss
Right-of-use asset
Non-cash impairment charges
Disposal of fully depreciated assets
Impaired Assets to be Disposed of by Method Other than Sale, Carrying Value of Asset
Cybersecurity Risk Management, Strategy, and Governance [Abstract]
Common Stock, Shares, Issued, Total
Common stock, shares issued
Common Stock, Shares, Issued
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag]
Cybersecurity Risk Board of Directors Oversight [Text Block]
Lessee, Operating Lease, Description
Lease term description
Conversion of common stock, value
Convertible Stock Converted Value
Convertible stock converted value.
Statement [Table]
Statement [Table]
Disposal Group, Including Discontinued Operation, Share Based Compensation
Disposal group including discontinued operation share based compensation.
Stock-based compensation expense
Restricted cash
Restricted Cash, Noncurrent
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions
Increase related to current year tax provision
Obtaining a right-of-use asset in exchange for an operating lease liability
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability
Internal Revenue Service (IRS)
Internal Revenue Service (IRS) [Member]
Cost of Goods and Services Sold Depreciation Amortization Expense
Cost of goods and services sold depreciation amortization expense.
Depreciation and amortization expense
Aggregate consideration amount
Cash consideration
Cash consideration
Payments to Acquire Businesses, Gross
Capitalized Contract Cost, Net, Total
Costs to obtain a contract
Capitalized Contract Cost, Net
Statement [Line Items]
Statement [Line Items]
Equity incentive plan, additional shares authorized percentage
Share Based Compensation Arrangement By Share Based Payment Award Number Of Additional Shares Authorized Percentage
Share based compensation arrangement by share based payment award number of additional shares authorized percentage.
Business Acquisition, Acquiree
Business Combination [Domain]
Revenue Recognition
Revenue from Contract with Customer [Policy Text Block]
Discontinued Operations Weighted Average Number Of Shares Outstanding Basic
Discontinued operations weighted average number of shares outstanding basic.
Basic
Entity Filer Category
Entity Filer Category
Temporary Equity, Net Income
Redeemable noncontrolling interest, net (loss) income
Number of Shares
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Right-of-Use Assets
Right Of Use Assets [Member]
Right of use assets.
Liabilities and Equity
Total liabilities and stockholders' equity
Debt Instrument [Line Items]
Payables and Accruals [Abstract]
Effective Income Tax Rate Reconciliation, Tax Contingency, Percent
Effective Income Tax Rate Reconciliation, Tax Contingency, Percent, Total
Changes in unrecognized tax benefits
Percentage of excise tax imposed.
Percentage of Excise Tax Imposed
Percentage of excise tax imposed
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price
Exercisable
Disposal Group, Including Discontinued Operation, Costs of Goods Sold
Cost of revenue
Income Tax Paid, after Refund Received, State and Local Jurisdictions [Extensible Enumeration]
Long-Lived Tangible Asset
Long-Lived Tangible Asset [Axis]
Change in valuation allowance
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount
Business Combination, Voting Equity Interest Acquired, Percentage
Business acquisition, percentage of equity interest acquired
Business acquisition, percentage of interest acquired
Cybersecurity Risk Third Party Oversight and Identification Processes [Flag]
Financial Instruments Disclosure [Text Block]
Fair Value of Financial Instruments
Cash and Cash Equivalents, Fair Value Disclosure
Cash equivalents
Other non-current liabilities
Disposal Group, Including Discontinued Operation, Other Liabilities, Noncurrent
Unpaid withholding taxes on net share settlement of restricted stock units
Unpaid Withholding Taxes On Net Share Settlement Of Restricted Stock Units
Unpaid withholding taxes on net share settlement of restricted stock units
Valuation Allowance
Deferred Tax Assets, Valuation Allowance, Total
Deferred Tax Assets, Valuation Allowance
Statutory tax rate
U.S. federal taxes at statutory rate
Federal tax rate
Subsequent Event [Line Items]
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount, Total
Nondeductible expenses
Nondeductible items
Cybersecurity Risk Management Third Party Engaged [Flag]
Documents Incorporated by Reference
Documents Incorporated by Reference [Text Block]
Goodwill
Goodwill, Total
Goodwill
Balance at December 31, 2025
Balance as of December 31, 2024
Other Noncash Income (Expense)
Other Noncash Income (Expense), Total
Other non-cash (income) expense, net
Effective tax rate
Effective Income Tax Rate Reconciliation, Percent
Effective tax rate attributable to CarGurus, Inc
Effective tax rate for continuing operations
Stock Options Outstanding
Cash paid for income taxes
Income Taxes Paid
Interest income
Investment Income, Interest
Investment Income, Interest, Total
Income Tax Authority
Income Tax Jurisdiction [Axis]
Discontinued Operations Weighted Average Number Of Shares Outstanding Diluted
Discontinued operations weighted average number of shares outstanding diluted.
Diluted
Geographical
Geographical [Domain]
Restricted Cash
Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block]
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block]
Summary of Reconciliation Between Segment Income from Operations
Balance at Beginning of Period
Balance at End of Period
Accounts Receivable, Allowance for Credit Loss
Additional Paid in Capital, Common Stock, Ending Balance
Additional Paid in Capital, Common Stock, Beginning Balance
Additional paid–in capital
Additional Paid in Capital, Common Stock
Debt Issuance Costs, Net, Total
Debt Issuance Costs, Net
Deferred financing costs
Noncontrolling Interest Units
Noncontrolling Interest Units [Member]
Noncontrolling interest units member.
Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation
Payment of withholding taxes on net share settlements of restricted stock units
Redeemable noncontrolling interest, accretion to redemption value
Noncontrolling Interest, Change in Redemption Value
Summary of Significant Accounting Policies
Significant Accounting Policies [Text Block]
Property Plant And Equipment [Line Items]
Property, Plant and Equipment [Line Items]
Disposal Group Impairments
Disposal group impairments.
Impairments
Estimated useful lives
Finite-Lived Intangible Asset, Useful Life
Number of options granted in period
Stock options granted during period
Granted
Cybersecurity Risk Management, Strategy, and Governance [Table]
Schedule of Reconciliation of Numerator and Denominator Used in Calculation of Basic and Diluted Net Income Per Share
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount [Abstract]
Nontaxable or nondeductible items
Earnings Per Share, Basic, Total
Earnings Per Share, Basic
Consolidated
Basic net income from continuing operations per share
Disaggregation of Revenue [Table Text Block]
Summary of Revenue from Contracts with Customers by Services and Products
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Total
Foreign currency translation adjustment
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number
Outstanding, Ending balance
Outstanding, Beginning balance
Car Offer
CarOffer
Car Offer [Member]
CarOffer.
Debt, Policy [Policy Text Block]
Debt
Revolving Credit Facility [Member]
Revolving Credit Facility
Total current liabilities
Liabilities, Current
Class of share converted to another class
Conversion of Stock, Type of Stock Converted
Net income (loss) per share attributable to common stockholders.
Net Income (Loss) Per Share Attributable To Common Stockholders Abstract
Net income per share attributable to common stockholders:
Accounts payable
Disposal Group, Including Discontinued Operation, Accounts Payable, Current
Increase (Decrease) in Accounts Receivable
Accounts receivable
Adjustments to reconcile consolidated net income to net cash provided by operating activities:
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract]
Lessee, Operating Lease, Liability, to be Paid, Year Five
2030
Other cross-border tax laws
Effective Income Tax Rate Reconciliation, Cross-Border, Other, Amount
Other cross-border tax laws
Income Tax Paid, Federal, after Refund Received
Income Tax Paid, Federal, after Refund Received, Total
Federal
Deferred tax assets capitalized research and development.
Deferred Tax Assets Capitalized Research and Development
Capitalized research and development
Federal
Domestic Tax Jurisdiction [Member]
Effective Income Tax Rate Reconciliation, Tax Credit, Percent [Abstract]
Tax Credits
Financing Receivable, Allowance for Credit Loss [Line Items]
Effective Income Tax Rate Reconciliation, Tax Credit, Other, Amount
Other
Other
Effective Income Tax Rate Reconciliation [Table]
Increase related to prior year tax provision
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions
Payments of Debt Issuance Costs
Payment of deferred financing costs
Stockholders’ equity:
Equity, Attributable to Parent [Abstract]
Entity Small Business
Entity Small Business
Retained Earnings (Accumulated Deficit), Beginning Balance
Retained Earnings (Accumulated Deficit), Total
Retained Earnings (Accumulated Deficit), Ending Balance
Cumulative-effective adjustment of retained earnings
Retained earnings
Retained Earnings (Accumulated Deficit)
Acquisition of interest in CarOffer, LLC
Acquisition Of Redeemable Noncontrolling Interest
Acquisition of redeemable noncontrolling interest.
Stock-based compensation
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-Based Compensation Cost
Entity Well-known Seasoned Issuer
Entity Well-known Seasoned Issuer
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period
Forfeited or Expired
Summary Of Significant Accounting Policies [Table]
Summary Of Significant Accounting Policies [Table]
Summary of significant accounting policies.
Aggregate intrinsic value for options exercised
Exercised
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value
Foreign
Current Foreign Tax Expense (Benefit)
Subsequent Event Considerations
Subsequent Events, Policy [Policy Text Block]
Lease obligations
Increase Decrease In Lease Obligations
Increase decrease in lease obligations.
Stock-based Compensation
Share-Based Payment Arrangement [Text Block]
Purchases of short-term investments
Payments to Acquire Short-Term Investments
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Percentage of corporate alternative minimum tax.
Percentage of Corporate Alternative Minimum Tax
Percentage of corporate alternative minimum tax
Weighted Average Number Of Shares Outstanding Attributable To Common Stock Holders [Abstract]
Weighted average number of shares outstanding attributable to common stock holders.
Weighted-average number of shares of common stock used in computing net loss per share attributable to common stockholders
Class A Common Stock
Common Class A [Member]
Schedule of Accrued Expenses, Accrued Income Taxes and Other Current Liabilities
Schedule Of Accrued Liabilities And Other Current Liabilities Table [Text Block]
Schedule of accrued liabilities and other current liabilities.
Accretion to redeemable noncontrolling interest redemption value
Accretion to redeemable noncontrolling interest redemption value
Redeemable Noncontrolling Interest Accretion to Redemption Value
Redeemable noncontrolling interest accretion to redemption value.
Amendment Flag
Amendment Flag
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount
U.S. federal taxes at statutory rate
Payment of withholding taxes on net share settlements of restricted stock units
Payment of withholding taxes on net share settlements of restricted stock units.
Payment Of Withholding Taxes On Net Share Settlements Of Restricted Stock Units
Payment of withholding taxes on net share settlements of restricted stock units
Proceeds from Sale, Maturity and Collection of Investments, Total
Maturities of certificates of deposit
Proceeds from Sale, Maturity and Collection of Investments
Organization and Business Description
Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block]
Earnings Per Share
Earnings Per Share, Policy [Policy Text Block]
Disposal Group, Including Discontinued Operation, Assets, Current
Current assets of discontinued operations
Total current assets of discontinued operations
Entity Address, Postal Zip Code
Entity Address, Postal Zip Code
Net cash provided by operating activities
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation
Investments in certificates of deposit
Payments to Acquire Restricted Certificates of Deposit
Certificates of deposit due in one year or less, Amortized Cost
Investments:
Investments
Capitalization of website development costs
Payments to Develop Software
Capitalized expenditures
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description
Segment reporting, CODM, profit (loss) measure, how used, description
Common Stock [Member]
Common Stock
Cybersecurity Risk Role of Management [Text Block]
Tax credit carryforwards
Tax Credit Carryforward, Amount
Defined contribution plan, employer contribution
Defined Contribution Plan, Employer Discretionary Contribution Amount
Lessee, Operating Lease, Liability, to be Paid, Year Three
2028
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Ending Balance
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Beginning Balance
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Total
Less accumulated depreciation and amortization
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment
Capitalized website development and internal-use software costs excluded from stock-based compensation expense
Share-Based Payment Arrangement, Amount Capitalized
Capitalized stock-based compensation expense in website development and internal-use software costs and hosting arrangements
Entity Address, Address Line One
Entity Address, Address Line One
Deferred Tax Liabilities, Gross, Total
Deferred tax liability
Deferred Tax Liabilities, Gross
Fair Value Hierarchy and NAV
Fair Value Hierarchy and NAV [Axis]
Earnings Per Share [Abstract]
Net income per share attributable to common stockholders:
Net income per share attributable to common stockholders (Note 12)
Income Taxes
Income Tax, Policy [Policy Text Block]
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag]
Supplemental Cash Flow Information [Abstract]
Supplemental disclosure of cash flow information:
Unvested restricted stock units outstanding.
Unvested Restricted Stock Units Outstanding [Member]
Unvested restricted stock units outstanding
Foreign Currency Translation
Foreign Currency Transactions and Translations Policy [Policy Text Block]
Cost Of Revenue
Cost Of Revenue [Member]
Cost Of Revenue [Member]
Goodwill and Intangible Assets Disclosure [Text Block]
Intangible Assets and Goodwill
Percentage of annual limitation of taxable income
Percentage Of Annual Limitation Of Taxable Income
Percentage of annual limitation of taxable income.
Net lease assets
Operating lease right-of-use assets
Operating Lease, Right-of-Use Asset
Deferred tax assets
Deferred Tax Assets, Gross
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block]
Payment of Excise Taxes on Repurchases of Common Stock
Payment of excise taxes on repurchases of common stock.
Payment of excise taxes on repurchases of common stock
Disposal Group, Including Discontinued Operation, Revenue
Revenue
Customer One
Customer One [Member]
Customer one.
Document Type
Document Type
Income Taxes Paid, Net
Total income taxes paid
Income taxes paid (net of refunds)
Total Gross Profit
Gross profit
Gross Profit
Gross profit
Collaborative Arrangement and Arrangement Other than Collaborative [Axis]
Collaborative Arrangement and Arrangement Other than Collaborative [Domain]
Entity Central Index Key
Entity Central Index Key
Other Directors and Officers [Member]
Other directors and officers.
Other Directors and Officers
Disposal Group, Including Discontinued Operation, Deferred Revenue, Current
Deferred revenue
Allowance for doubtful accounts
Accounts Receivable, Allowance for Credit Loss, Current
Pillar Two Legislation
Pillar Two Legislation [Member]
Pillar two legislation
Assets
Disposal Group, Including Discontinued Operation, Assets [Abstract]
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation
Net (decrease) increase in cash, cash equivalents, and restricted cash
Subsequent Event Type [Domain]
Operating Activities [Axis]
Tax credit carryforward limitations on use, cumulative ownership change, period
Tax Credit Carryforward Limitations On Use Cumulative Ownership Change Period
Tax credit carryforward limitations on use, cumulative ownership change, period.
Potentially dilutive common stock equivalents excluded from calculation of diluted weighted-average shares outstanding
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Other non-current assets
Disposal Group, Including Discontinued Operation, Other Assets, Noncurrent
Stock Repurchased and Retired During Period, Shares
Number of shares repurchased and retired
Shares repurchased and retired
Disposal Group Classification [Domain]
Minimum average amount of adjusted financial income
Minimum average amount of adjusted financial income.
Minimum Average Amount of Adjusted Financial Income
Common stock, par value
Common Stock, Par or Stated Value Per Share
Goodwill [Line Items]
Goodwill [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term
Unexercisable and exercisable outstanding,
Foreign Tax Jurisdiction, Other [Member]
Other foreign jurisdictions
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest [Abstract]
Document Financial Statement Error Correction [Flag]
Exercised
Issuance of common stock upon exercise of stock options, Shares
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period
Debt Disclosure [Abstract]
Boston, Massachusetts at 1001 Boylston St
1001 Boylston Street
Boston Massachusetts One Zero Zero One Boylston [Member]
Boston, Massachusetts one zero zero one Boylston.
Restructuring and Related Cost, Expected Cost
Restructuring and Related Cost, Expected Cost, Total
One-time restructuring costs
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities
Decrease related to settlements with taxing authorities
Decrease related to settlements with taxing authorities
Significant Accounting Policies
Significant Accounting Policies Policy [Text Block]
Significant accounting policies.
Impairment of Capitalized Internal Use Software
Impairment of capitalized internal use software
Capitalized internal-use software
Cost of Revenue
Cost of Sales [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Current Fiscal Year End Date
Current Fiscal Year End Date
Schedule of Long-Term Debt Instruments [Table]
Stock Repurchase Program Additional Authorized Amount
Stock repurchase program additional authorized amount.
Share repurchase program additional authorized amount
Right of use assets
Deferred Tax Liabilities Right Of Use Assets
Deferred tax liabilities right of use assets.
CALIFORNIA
Schedule of Future Minimum Sublease Income Payments
Schedule of Future Minimum Sublease Income Payments [Table Text Block]
Schedule of future minimum sublease income payments.
Advertising Costs
Advertising Cost [Policy Text Block]
Customer Relationships
Customer Relationships [Member]
Entity Address, State or Province
Entity Address, State or Province
Unvested units
Unvested outstanding, beginning balance
Unvested outstanding, ending balance
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number
Other than option outstanding
Other accrued expenses, accrued income taxes, and other current liabilities
Other Accrued Expenses, Accrued Income Taxes and Other Current Liabilities
Other accrued expenses, accrued income taxes and other current liabilities.
Preferred Stock, Shares Outstanding, Ending Balance
Preferred Stock, Shares Outstanding, Beginning Balance
Preferred stock, shares outstanding
Preferred Stock, Shares Outstanding
Comprehensive income attributable to CarGurus, Inc.
Comprehensive income attributable to CarGurus, Inc.
Comprehensive income attributable to CarGurus, Inc.
Comprehensive income attributable to CarGurus, Inc.
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Tax credit carryforward, limitations on use
Tax Credit Carryforward, Limitations on Use
Effect of cross-border tax laws
Effective Income Tax Rate Reconciliation, Cross-Border Tax Effect, Percent [Abstract]
Total shares of authorized common stock reserved for future issuance
Common Stock, Capital Shares Reserved for Future Issuance
Quarterly Financial Data [Abstract]
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]
Discontinued Operations
Incremental Common Shares Attributable to Share-based Payment Arrangements, Total
Dilutive effect of share equivalents resulting from stock options
Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements
Description of significant off-balance sheet risk
Concentration Risk, Credit Risk, Financial Instruments, off-Balance-Sheet Risk
Geographical
Geographical [Axis]
Revenue recognized, accrued income expense and other liabilities
Revenue recognized
Contract with Customer, Liability, Revenue Recognized
Net Accounts Receivable
Accounts Receivable [Member]
Employee tax withholding requirements and option costs due to net share settlement
Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation
Withholding taxes on net share settlements of restricted stock units
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount
State taxes, net of federal benefit
Summary of Allocation of Stock-based Compensation Expense
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
Issuance of common stock upon exercise of stock options
Stock Issued During Period, Value, Stock Options Exercised
Comprehensive Income
Comprehensive Income, Policy [Policy Text Block]
Accrued bonus
Accrued Bonuses, Current
Depreciation and Amortization, Discontinued Operations
Depreciation and amortization
Accrued Expenses, Accrued Income Taxes and Other Current Liabilities
Schedule of Income Tax Effect of Each Type of Temporary Difference and Carryforward
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Other comprehensive income:
Other comprehensive income (loss):
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Income (Loss) from Continuing Operations, Per Basic Share
Continuing operations
Deferred Income Tax Assets, Net, Total
Deferred tax assets
Deferred Income Tax Assets, Net
Subsequent Event [Member]
Subsequent Event
Property, Plant and Equipment [Abstract]
Awarded Under 2017 Plan
Two Thousand Seventeen [Member]
Two thousand seventeen.
Number of additional shares authorized
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized
Other Assets, Noncurrent, Total
Other non-current assets
Other Assets, Noncurrent
Antidilutive Securities
Antidilutive Securities [Axis]
Total fair value of RSUs vested
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value
Intangible Assets
Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block]
Income Tax Paid, Foreign, after Refund Received
Income Tax Paid, Foreign, after Refund Received, Total
Foreign
State
State and Local Jurisdiction [Member]
Summary of Stock-based Compensation Expense by Award Type
Share-Based Payment Arrangement, Cost by Plan [Table Text Block]
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive (Loss) Income
Customer
Customer [Domain]
Finite-Lived Intangible Assets, Major Class Name
Finite-Lived Intangible Assets, Major Class Name [Domain]
Impairment of goodwill
Goodwill, Impairment Loss
Impairment of goodwill
Goodwill
Thereafter
Finite-Lived Intangible Asset, Expected Amortization, after Year Five
Disposal Group, Including Discontinued Operation, Assets, Noncurrent
Disposal Group, Including Discontinued Operation, Assets, Noncurrent, Total
Non-current assets of discontinued operations
Operating lease, option to extend
Lessee, Operating Lease, Option to Extend
Preferred Stock, Value, Issued, Ending Balance
Preferred Stock, Value, Issued, Beginning Balance
Preferred Stock, Value, Issued, Total
Preferred Stock, Value, Issued
Preferred stock, $0.001 par value per share; 10,000,000 shares authorized; no shares issued and outstanding
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Deferred provision (benefit)
Disposal Groups, Including Discontinued Operations [Table Text Block]
Summary of Major Classes of Assets and Liabilities, Income Statements, Significant Non-cash Items and Capital Expenditures of Discontinued Operations
Sale of short-term investments
Sales of Short-Term Investments
Sales of short-term investments.
Impairment of goodwill
Goodwill Impairment Charges excluding Deferred Tax Asset
Goodwill impairment charges excluding deferred tax asset.
Minimum
Minimum [Member]
Weighted average grant date fair value of RSUs granted
Granted
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value
Current assets:
Assets, Current [Abstract]
Credit Loss [Abstract]
Receivables in transit, net of payments received in advance from third-party payment processor, current.
Receivables In Transit Net Of Payments Received In Advance From Third Party Payment Processor Current
Receivables in transit, net of payments received in advance from the third-party payment processor
Property, Plant and Equipment, Gross, Period Increase (Decrease), Total
Increase (decrease) in property and equipment
Property, Plant and Equipment, Gross, Period Increase (Decrease)
Quarterly Financial Information [Text Block]
Quarterly Financial Results (unaudited)
Amortization of intangible assets
Intangibles amortization
Amortization of Intangible Assets, Total
Amortization of Intangible Assets
Class B Common Stock
Common Class B [Member]
Significant Unobservable Inputs (Level 3 Inputs)
Fair Value, Inputs, Level 3 [Member]
Other accrued expenses and other current liabilities.
Other Accrued Expenses And Other Current Liabilities
Other accrued expenses and other current liabilities
Impairment of Capitalized Website Development
Impairment of capitalized website development.
Capitalized website development costs
Segment Reporting [Abstract]
Deferred Tax Liabilities, Property, Plant and Equipment
Property and equipment
Business Combinations
Business Combination [Policy Text Block]
Tax Period [Domain]
Unrealized gain on short-term investments in equity securities
Unrealized Gain (Loss) on Investments
Schedule of Fair Value Levels, Assets Measured at Fair Value on Recurring Basis
Fair Value, Assets Measured on Recurring Basis [Table Text Block]
Current liabilities:
Liabilities, Current [Abstract]
Income Taxes Paid (Net of Refunds) Threshold Percentage
Income Taxes Paid (Net of Refunds) Threshold Percentage.
Income taxes paid (net of refunds) threshold percentage
Stock Repurchased and Retired During Period, Value
Share repurchased and retired, value
Repurchase of common stock
Sublease income
Sublease Income
Accounts receivable, net
Accounts Receivable, after Allowance for Credit Loss, Current, Total
Accounts Receivable, after Allowance for Credit Loss, Current
Accounts receivable, net of allowance for doubtful accounts of $600 and $696, respectively
Conversion of common stock, shares converted
Convertible Stock Shares Converted
Convertible stock shares converted.
Disposal Group, Including Discontinued Operation, Liabilities [Abstract]
Liabilities
Commitments and contingencies (Note 9)
Commitments and contingencies (Note 10)
Commitments and Contingencies
Leases
Lessee, Leases [Policy Text Block]
Document And Entity Information [Table]
Document And Entity Information [Table]
Document and entity information
Unvested outstanding, beginning balance
Unvested outstanding, ending balance
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value
Acquisition of remaining interest in CarOffer, LLC
Acquisition of remaining interest in CarOffer, LLC
Acquisition Of Remaining Interest
Acquisition Of Remaining Interest
Provision
Provision for doubtful accounts
Accounts Receivable, Credit Loss Expense (Reversal)
General and Administrative Expense
General and Administrative
General and Administrative Expense [Member]
Lease liabilities
Operating Lease, Liability, Total
Total
Operating Lease, Liability
Auditor Firm ID
Aggregate Intrinsic Value
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value [Abstract]
Capitalized Computer Software, Net, Ending Balance
Capitalized Computer Software, Net, Beginning Balance
Capitalized Computer Software, Net, Total
Software and website development costs capitalized
Capitalized Computer Software, Net
Summary of Changes in Carrying Value of Goodwill
Schedule of Goodwill [Table Text Block]
Payment of revenue, performance obligation, description of payment terms
Revenue, Performance Obligation, Description of Payment Terms
Restricted cash
Restricted Cash, Current
Concentration Risk Benchmark
Concentration Risk Benchmark [Axis]
Continuing Operations [Member]
Continuing Operations
Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations, Total
Impact of foreign currency on cash, cash equivalents, and restricted cash
Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation
Finance Lease Right-of-use Assets
Finance Lease Right Of Use Assets [Member]
Finance lease right-of-use assets.
Capital Expenditures Incurred but Not yet Paid
Unpaid purchases of property and equipment and capitalized hosting arrangements
Consolidated net income
Consolidated net income
Net income
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
Disposal Group, Including Discontinued Operation, Liabilities, Current
Current liabilities of discontinued operations
Total current liabilities of discontinued operations
Total operating expenses
Disposal Group, Including Discontinued Operation, Operating Expense
Reconciliation of Assets from Segment to Consolidated [Table Text Block]
Summary of Assets by Segment
Cybersecurity Risk Management Positions or Committees Responsible [Text Block]
Weighted Average Number of Shares Outstanding, Basic, Total
Basic
Weighted Average Number of Shares Outstanding, Basic
Weighted-average number of shares of common stock used in computing net income per share attributable to common stockholders - basic
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value
Exercisable
Other noncash (income) expense, net
Disposal Group Other Noncash Income Expense Net
Disposal group other noncash income expense net.
Other noncash income, net
Schedule of Effective Tax Rates
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table]
Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]
Finite-lived intangible assets accumulated impairment.
Finite-Lived Intangible Assets, Accumulated Impairment
Accumulated Impairment
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent, Total
Income from continuing operations
Net income from continuing operations - basic and diluted
Caroffer Purchase Agreement
CarOffer Purchase Agreement [Member]
Car offer purchase agreement member.
Segments [Axis]
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax
Loss from discontinued operations before income taxes
Long-Lived Tangible Asset
Long-Lived Tangible Asset [Domain]
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]
Subsequent Events [Text Block]
Subsequent Event
Federal and state credits
Effective Income Tax Rate Reconciliation, Tax Credit, Percent, Total
Effective Income Tax Rate Reconciliation, Tax Credit, Percent
Federal and state credits
Long-Term Debt, Total
Long-Term Debt
Long-term debt outstanding
APIC, Share-based Payment Arrangement, Increase for Cost Recognition, Total
Stock–based compensation expense
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition
Total stockholders’ equity
Beginning balance
Ending balance
Equity, Attributable to Parent
Preferred stock, par value
Preferred Stock, Par or Stated Value Per Share
Letter of credit related to lease expired.
Letter of credit related to lease expired
Basis of Presentation
Basis of Accounting, Policy [Policy Text Block]
Lessee, Operating Lease, Existence of Option to Extend [true false]
Operating lease, Existence of option to extend [true false]
Statement of Stockholders' Equity [Abstract]
Line of credit facility increased in maximum borrowing capacity.
Line Of Credit Facility Increased in Maximum Borrowing Capacity
Line of credit facility increased in maximum borrowing capacity
Weighted-Average Remaining Contractual Life (In Years)
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Remaining Contractual Term Rollforward
Use of Estimates
Use of Estimates, Policy [Policy Text Block]
Leasehold Improvements
Leasehold Improvements [Member]
Sales and Marketing Expense
Sales and Marketing
Selling and Marketing Expense [Member]
Entity Address, Address Line Two
Entity Address, Address Line Two
Undistributed earnings ratio used to calculate allocation to class of stock
Undistributed Earnings Ratio Used To Calculate Allocation To Class Of Stock
Undistributed earnings ratio used to calculate allocation to class of stock.
Customer Two
Customer two.
Customer Two [Member]
Stock repurchases excise tax percentage.
Stock Repurchases Excise Tax Percentage
Stock repurchases excise tax percentage
UNITED STATES
US [Member]
United States
Summary of Income Taxes Paid (Net of Refunds) by Jurisdictions [Tablet Text Block]
Summary of Income Taxes Paid (Net of Refunds) by Jurisdictions.
Summary of Income Taxes Paid (Net of Refunds) by Jurisdictions
Common Stock
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward]
Supplemental noncash disclosure of cash flow information:
Noncash Investing and Financing Items [Abstract]
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]
Schedule of Unrecognized Tax Benefits, Excluding Interest and Penalties
Disposal Group, Including Discontinued Operation, Liabilities, Current [Abstract]
Current liabilities
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share, Total
Basic
Discontinued operations
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Noncontrolling Interest
Net loss from discontinued operations attributable to redeemable noncontrolling interest
Plan Name
Plan Name [Domain]
Capitalized Internal-Use Software
Capitalized internal-use software
Website Development Costs
Software and Software Development Costs [Member]
Advance payments to customers, net of collections
Advance Payments to Customer, Net of Collections
Advance payments to customer, net of collections.
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]
Credit Facility [Axis]
Total Cost of revenue
Cost of Goods and Services Sold, Total
Cost of Product and Service Sold
Cost of revenue
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Text Block]
Impairment, Long-Lived Asset, Held-for-Use
Impairment of property and equipment
State
Current State and Local Tax Expense (Benefit)
Cybersecurity Risk Management Expertise of Management Responsible [Text Block]
Allowance for doubtful accounts
Disposal Group, Including Discontinued Operation, Accounts Receivable, Allowance for Credit Loss, Current
Amount of allowance for credit loss on accounts receivable, attributable to disposal group held for sale or disposed of classified as current.
Earnings Per Share from Discontinued Operations [Abstract]
Earnings per share from discontinued operations.
Net loss from discontinued operations per share
Unpaid excise tax on repurchases of shares
Unpaid Excise Tax On Repurchases Of Shares
Unpaid excise tax on repurchases of shares.
Tax Period [Axis]
Operating Lease Commitments
Lessee, Operating Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract]
Acquisition of remaining interest in CarOffer, LLC
Payments to Acquire Remaining Interest
Payments to acquire remaining interest.
Number of Dealer Accounts
Number of dealer accounts.
Number of dealer accounts
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount
Other
Foreign
Foreign Tax Jurisdiction [Member]
Liabilities and stockholders’ equity
Liabilities Convertible Preferred Stock And Stockholders Deficit Equity [Abstract]
Liabilities convertible preferred stock and stockholders' deficit equity.
Property and Equipment
Property, Plant and Equipment, Policy [Policy Text Block]
Entity Address, City or Town
Entity Address, City or Town
Hosting Arrangements
Hosting Arrangements [Member]
Hosting arrangements.
Stock Repurchased During Period, Shares
Repurchase of common stock, Shares
Repurchase of common stock, Shares
Disposal Group, Including Discontinued Operation, Intangible Assets, Noncurrent
Intangible assets, net
Number of major customers
Number Of Major Customers
Number of major customers.
Number of reportable segments
Number of Reportable Segments
Security Exchange Name
Security Exchange Name
Credit Facility [Domain]
Redeemable Noncontrolling Interest, Beginning balance
Redeemable Noncontrolling Interest, Ending Balance
Redeemable noncontrolling interest
Redeemable Noncontrolling Interest, Equity, Carrying Amount
Redeemable Noncontrolling Interest, Equity, Carrying Amount, Total
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent
Other
Property, Plant and Equipment, Gross, Ending Balance
Property, Plant and Equipment, Gross, Beginning Balance
Property, Plant and Equipment, Gross, Total
Property and equipment, gross
Property, Plant and Equipment, Gross
Current provision:
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
Conversion of stock, description
Conversion of Stock, Description
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest
Income from continuing operations before income taxes
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent
Net loss from discontinued operations attributable to CarGurus, Inc.
Concentration Risk Type
Concentration Risk Type [Domain]
Repurchase of redeemable noncontrolling interest
Repurchase Of Redeemable Noncontrolling Interest
Repurchase of redeemable noncontrolling interest.
Antidilutive Securities, Name
Antidilutive Securities, Name [Domain]
Foreign rate differential
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent
Foreign Tax Rate Effects
Foreign Tax Rate Effects
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share, Total
Diluted
Discontinued operations
Inventory
Inventory, Net
Inventory, Net, Total
Intangible assets
Deferred Tax Assets, Goodwill and Intangible Assets
Interest Paid, Excluding Capitalized Interest, Operating Activity
Cash paid for interest
Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Table]
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table]
Statistical Measurement
Statistical Measurement [Domain]
Share repurchased and retired at average cost price per share.
Share Repurchased And Retired At Average Cost Price Per Share
Share repurchased and retired at average cost price per share
Impairment in cost of revenue.
Impairment in Cost of Revenue
Impairment of other assets
Disposal Group, Including Discontinued Operation, Sales and Marketing Expense
The aggregate total amount of expenses directly related to the marketing or selling of products or service attributable to disposal group, including, but not limited to, discontinued operation.
Sales and marketing
Total current assets
Assets, Current
Stock-based compensation expense
Share-Based Payment Arrangement, Expense
Total
Document Period End Date
Document Period End Date
Fair Value Hierarchy and NAV
Fair Value Hierarchy and NAV [Domain]
ICFR Auditor Attestation Flag
ICFR Auditor Attestation Flag
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number
Exercisable
Impairment of Intangible Assets, Indefinite-Lived (Excluding Goodwill)
Impairment of intangible asset
Intangible assets
CO Incentive Units and Subject Units
CarOffer incentive units and subject units.
Car Offer Incentive Units and Subject Units [Member]
Gain on sale of property and equipment
Gain (Loss) on Disposition of Property Plant Equipment
Gain (Loss) on Disposition of Property Plant Equipment, Total
Weighted Average Remaining Useful Life (years)
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life
Statement of Financial Position [Abstract]
Restricted Stock Units Outstanding
Restricted Stock Units
RSUs
Current assets
Disposal Group, Including Discontinued Operation, Assets, Current [Abstract]
Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table]
Antidilutive Security, Excluded EPS Calculation [Table]
Class of Stock
Class of Stock [Axis]
Employee Benefit Plans
Compensation and Employee Benefit Plans [Text Block]
Amortization of deferred contract costs
Capitalized Contract Cost, Amortization
Current (benefit) provision
Current Income Tax Expense (Benefit)
Cybersecurity Risk Management, Strategy, and Governance [Line Items]
Total liabilities
Liabilities
Incremental Common Shares Attributable to Dilutive Effect of Equity Unit Purchase Agreements
Dilutive effect of share equivalents resulting from unvested restricted stock units
Investment in partnership
Deferred Tax Assets, Investments
Non Rule 10b 51 Arr Modified Flag
Non Rule 10b 51 Arr Modified Flag
Equity incentive plan, issuance of additional shares, description and terms
Share-Based Compensation Arrangement by Share-Based Payment Award, Description
Requisite service period
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Requisite Service Period
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount
Foreign Tax Rate Effects
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Total
Accruals and reserves
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals
2017 Plan
Two Thousand Seventeen Plan [Member]
Two thousand seventeen plan.
Lessee, Operating Lease, Liability, to be Paid, Year Two
2027
Brand
Brand [Member]
Brand.
Restricted Cash, Total
Restricted cash
Restricted cash
Restricted Cash
Disposal Groups, Including Discontinued Operations [Table]
Advertising expense
Advertising Expense
Redeemable noncontrolling interest.
Redeemable Noncontrolling Interest Policy [Text Block]
Redeemable Noncontrolling Interest
Deemed dividend on redemption of noncontrolling interest
Deemed Dividend On Redemption Of Noncontrolling Interest
Deemed dividend on redemption of noncontrolling interest.
Finite-Lived Intangible Assets, Gross, Total
Gross Carrying Amount
Finite-Lived Intangible Assets, Gross
Tax credit carryforward limitations on use, cumulative ownership change percentage
Tax Credit Carryforward Limitations On Use Cumulative Ownership Change Percentage
Tax credit carryforward limitations on use, cumulative ownership change, percentage.
Diluted
Weighted Average Number of Shares Outstanding, Diluted
Weighted-average number of shares of common stock used in computing net income per share attributable to common stockholders - diluted
Entity File Number
Securities Act File Number
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Percent
Other
Operating loss carryforwards expiration year
Operating loss carryforwards expiration year.
Maturities of short-term investments
Proceeds from Sale, Maturity and Collection of Short-Term Investments
Proceeds from Sale, Maturity and Collection of Short-Term Investments, Total
Cover [Abstract]
Summary of Income Taxes Paid Net of Refunds [Table Text Block]
Summary of Income Taxes Paid Net of Refunds.
Summary of Income Taxes Paid (Net of Refunds)
Number of consecutive tax year period.
Number of Consecutive Tax Year Period
Number of consecutive tax year period
Other
Goodwill, Other Increase (Decrease)
Prepaid expenses, prepaid income taxes and other current assets
Prepaid Expense and Other Assets, Current
Forfeited
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period
Number of units forfeited in period
Sales Revenue, Net
Revenue Benchmark [Member]
Unrealized Gain (Loss), Foreign Currency Transaction, before Tax
Currency loss (gain) on foreign denominated transactions
Number of shares authorized for issuances
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized
Write-offs in capitalized website development costs
Capitalized internal use software
Impairments, disposals and write offs of capitalized website development costs
Segment and Geographic Information
Segment Reporting Disclosure [Text Block]
General and Administrative Expense, Total
General and administrative
General and Administrative Expense
General and administrative
Federal and State Jurisdiction [Member]
Federal and state jurisdiction.
Federal and Sate
Issuance of common stock upon for acquisition, Shares
Stock Issued During Period, Shares, Acquisitions
Gain on Sale of Investments
Realized gain on short-term investments in equity securities
Subsequent Event [Table]
Total other income, net
Disposal Group, Including Discontinued Operation, Other Income
Additionally disposed of leasehold improvements
Disposal of Leasehold Improvements Cost
Disposal of leasehold improvements cost.
Dividend income from investment
Investment Income, Dividend
Share repurchase program expiration date
Share Repurchase Program, Expiration Date
Short-Term Debt, Type [Domain]
Finite-Lived Intangible Assets, Net, Beginning Balance
Finite-Lived Intangible Assets, Net, Ending Balance
Net Carrying Amount
Intangible assets, net
Finite-Lived Intangible Assets, Net
Aggregate Intrinsic Value
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Additional Disclosures [Abstract]
Advertising Customers
Advertising Customers [Member]
Advertising customers.
Estimated useful life
Estimated Useful Life
Property, Plant and Equipment, Useful Life
Short-Term Debt, Type [Axis]
Recent Accounting Pronouncements Adopted
New Accounting Pronouncements, Policy [Policy Text Block]
Summary of Future Minimum Lease Payments
Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Deferred revenue
Contract with Customer, Liability, Current
Conversion of common stock, shares issued
Stock Issued During Period, Shares, Conversion of Convertible Securities
Vesting period
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period
Deferred contract costs
Increase (Decrease) in Contract with Customer, Asset
United States
Income (Loss) from Continuing Operations before Income Taxes, Domestic
Impairment Goodwill
Impairment goodwill.
Impairments goodwil
Investment, Type [Extensible Enumeration]
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount
Unrecognized stock-based compensation expense related to RSUs
Common stock, shares outstanding
Beginning balance, Shares
Ending balance, Shares
Common Stock, Shares, Outstanding
Right-of-Use Asset Increase (Decrease) Obtained in Exchange for Operating Lease Liability
Right-of-use asset increase (decrease) obtained in exchange for operating lease liability.
Obtaining a right-of-use asset in exchange for an operating lease liability
Operating lease liabilities
Operating Lease, Liability, Current
Depreciation, Depletion and Amortization, Total
Depreciation and amortization
Depreciation, Depletion and Amortization
Performance obligation unsatisfied
Revenue, Remaining Performance Obligation, Amount
Cybersecurity Risk Management Processes Integrated [Flag]
Document Transition Report
Document Transition Report
Net deferred tax assets
Deferred Tax Assets, Net
Short-term investments
Short-Term Investments
Short-Term Investments, Total
Operating Expenses
Total operating expenses
Accrued Liabilities, Current [Abstract]
Disposal Group, Including Discontinued Operation, Property, Plant and Equipment, Noncurrent
Property and equipment, net
Research and Development Expense, Total
Product, technology, and development
Research and Development Expense
Product, technology, and development
Asset Impairment Charges
Impairment
Total
Cost of Revenue
Cost of Revenue, Total
Cost of revenue
Payments for Repurchase of Common Stock
Repurchase of common stock
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Schedule of Provision for Income Taxes
Deferred tax assets, state net operating loss carryforwards
Deferred Tax Assets, Operating Loss Carryforwards, State and Local
Consolidated comprehensive income
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest
Statement of Cash Flows [Abstract]
Weighted-Average Grant Date Fair Value
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Change in gross advance payments received from third-party transaction processor
Change in gross advance payments received from third-party payment processor.
Change In Gross Advance Payments Received From Third-party Payment Processor
Accrued expenses, accrued income taxes, and other liabilities
Increase Decrease In Accrued Liabilities Accrued Income Taxes And Other Liabilities
Increase (decrease) in accrued liabilities accrued income taxes and other liabilities.
Federal
Current Federal Tax Expense (Benefit)
Impairment Of Intangible Assets
Impairment of intangible assets.
Impairment intangible assets
Summary of Stock Option Activity
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
Operating Activities [Domain]
Cash paid, net of cash acquired
Cash paid, net of cash acquired
Cash paid for acquisitions, net of cash acquired
Payments to Acquire Businesses, Net of Cash Acquired
Finite Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets [Line Items]
Earnings Per Share
Earnings Per Share [Text Block]
Accretion of redeemable noncontrolling interest to redemption value
Accretion of Redeemable Noncontrolling Interest to Redemption Value
Accretion of redeemable noncontrolling interest to redemption value.
Discontinued Operations and Disposal Groups [Abstract]
Summary of Restricted Stock Unit Activity
Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]
Deferred Tax Liabilities, Other
Other
Cybersecurity Risk Management Processes Integrated [Text Block]
Schedule of Investments
Investment [Table Text Block]
Net (loss) income attributable to common stockholders
Consolidated net income
Net loss
Net (loss) income
Net income attributable to CarGurus, Inc.
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value
Unexercisable and exercisable outstanding, Beginning balance
Unexercisable and exercisable outstanding, Ending balance
Inventory
Inventory
Increase (Decrease) in Inventories
Increase (Decrease) in Inventories, Total
Effective Income Tax Rate Reconciliation Stock Compensation Expense Benefit
Stock compensation
Effective income tax rate reconciliation, stock compensation expense benefit.
Operating lease costs
Operating Lease, Cost
Income Tax Disclosure [Line Items]
Income Tax Disclosure [Line Items]
Income tax disclosure.
Earnings Per Share Basic [Line Items]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Summary of Changes in Allowance for Doubtful Accounts
Accounts Receivable, Allowance for Credit Loss [Table Text Block]
Effective Income Tax Rate Reconciliation Mergers And Acquisitions
Effective income tax rate reconciliation mergers and acquisitions.
M&A
Cash paid for operating lease liabilities
Operating Lease, Payments
Assets
Assets [Abstract]
Income Tax Authority, Name
Income Tax Authority, Name [Axis]
Summary Of Significant Accounting Policies [Line Items]
Summary Of Significant Accounting Policies [Line Items]
Summary of significant accounting policies.
Construction in Progress
Construction in Progress [Member]
Increase (Decrease) in Prepaid Expense and Other Assets, Total
Prepaid expenses, prepaid income taxes, and other assets
Increase (Decrease) in Prepaid Expense and Other Assets
Document Fiscal Year Focus
Document Fiscal Year Focus
Concentration Risk Benchmark
Concentration Risk Benchmark [Domain]
Investing Activities
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract]
Retirement Benefits [Abstract]
Accounts Payable, Current, Total
Accounts payable
Accounts Payable, Current
Impairment Of Capitalized Hosting Arrangements
Impairment of capitalized hosting arrangements.
Capitalized hosting arrangements
Lapse in statute of limitations
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations
Lapse in statute of limitations
Other (Note 6)
Adjustments to Additional Paid in Capital, Other
Other
Schedule of Domestic and Foreign Components of Income Before Income Taxes
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]
Research and Development Expense [Member]
Product, Technology, and Development Expense
Other Operating Segment [Member]
Other
Employer matching contribution, percent of match
Defined Contribution Plan, Employer Matching Contribution, Percent of Match
Increase in accrued bonus
Increase in Accrued Bonus
Increase in accrued bonus.
Accrued tax distributions to redeemable noncontrolling interest holders.
Accrued Tax Distributions To Redeemable Noncontrolling Interest Holders
Accrued tax distributions to redeemable noncontrolling interest holders
Federal
Deferred Federal Income Tax Expense (Benefit)
Distribution to redeemable noncontrolling interest holders
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests
Tax distributions to redeemable noncontrolling interest holders
Finite-Lived Intangible Asset, Expected Amortization, Year One
2026
Awarded Under 2015 Plan
Two Thousand Fifteen [Member]
Two Thousand Fifteen .
Property, Plant and Equipment, Disposals
Disposal of fully depreciated assets
C G Buy Online Pilot [Member]
CG buy online pilot.
CG Buy Online Pilot
Unrecognized Tax Benefits [Roll Forward]
Proceeds from Stock Options Exercised
Proceeds from issuance of common stock upon exercise of stock options
Fair Value Disclosures [Abstract]
Commitments and Contingencies Disclosure [Abstract]
Issuance of common stock upon for acquisition
Stock Issued During Period, Value, Acquisitions
Effective Income Tax Rate Reconciliation, Tax Credit, Amount
Federal and state credits
Effective Income Tax Rate Reconciliation, Tax Credit, Amount, Total
Lessee, Operating Lease, Liability, to be Paid, Year One
2026
Depreciation and Amortization Excluding Amortization of Intangible Assets, Capitalized Hosting Arrangements, Disposals and Impairments
Depreciation and amortization excluding amortization of intangible assets, capitalized hosting arrangements, disposals and impairments.
Depreciation and amortization excluding amortization of intangible assets, capitalized hosting arrangements, disposals and impairments
Net income attributable to common stockholders - basic
Net Income (Loss) Available to Common Stockholders, Basic
Net income (loss) attributable to common stockholders
Net income attributable to common stockholders
Impairment, Long-Lived Asset, Held-for-Use, Statement of Income or Comprehensive Income [Extensible Enumeration]
Effective Income Tax Rate Reconciliation, Cross-Border Tax Effect, Amount [Abstract]
Effect of cross-border tax laws
Disposal Group, Including Discontinued Operation, Liabilities
Total liabilities of discontinued operations
Liabilities of discontinued operations
Effective Income Tax Rate Reconciliation [Line Items]
Net income attributable to redeemable noncontrolling interest
Redeemable noncontrolling interest, net income
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest, Total
Net loss attributable to redeemable noncontrolling interest
Net loss attributable to redeemable noncontrolling interest
Long-Term Line of Credit, Total
Long-Term Line of Credit
Letter of credit facility
Contract with Customer, Asset, after Allowance for Credit Loss, Current, Total
Deferred contract costs
Contract with Customer, Asset, after Allowance for Credit Loss, Current
Commitments And Contingencies [Line Items]
Commitments And Contingencies [Line Items]
Commitments and contingencies.
Lessee, Operating Lease, Liability, to be Paid, after Year Five
Thereafter
Share-Based Payment Arrangement [Abstract]
Total
Assets, Fair Value Disclosure
Total
Intangible assets
Deferred Tax Liabilities, Intangible Assets
Concentration of credit risk, percentage
Concentration Risk, Percentage
Receivables and Credit Loss Allowance [Policy Text Block]
Receivables and credit loss allowance.
Accounts Receivable and Allowance for Doubtful Accounts
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation
Net cash used in investing activities
Payment Processor [Member]
Payment processor.
Payment Processor
Title of 12(b) Security
Title of 12(b) Security
Schedule Of Segment Reporting Information By Segment [Table]
Schedule of Segment Reporting Information, by Segment [Table]
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price
Forfeited or Expired
Forfeited
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value
Product, technology, and development
Disposal Group, Including Discontinued Operation, Research and Development Expense
Amount of expense for research and development expense attributable to disposal group, including, but not limited to, discontinued operation.
Income Taxes
Income Tax Disclosure [Text Block]
Recent Accounting Pronouncements Not Yet Adopted
Recent Accounting Pronouncements Not Yet Adopted Policy [Text Block]
Recent accounting pronouncements not yet adopted.
Total
Other non–current liabilities
Other Liabilities, Noncurrent
Changes in operating assets and liabilities:
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract]
Schedule of Property and Equipment, Net
Property, Plant and Equipment [Table Text Block]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price
Unexercisable and exercisable outstanding, Beginning balance
Unexercisable and exercisable outstanding, Ending balance
Income Tax Disclosure [Abstract]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table]
Fair Value, Recurring and Nonrecurring [Table]
Net Income (Loss) from Discontinued Operations Available to Common Shareholders, Basic
Net loss from discontinued operations attributable to common stockholders
Net loss from discontinued operations attributable to common stockholders - basic
Capitalized Hosting Arrangements
Capitalized Hosting Arrangements [Policy Text Block]
Capitalized hosting arrangements.
Total
Accrued expenses, accrued income taxes and other current liabilities
Accrued Liabilities Accrued Income Taxes And Other Liabilities Current
Accrued liabilities accrued income taxes and other liabilities current.
Unrecognized tax benefits at end of year
Unrecognized tax benefits at beginning of year
Liabilities for uncertain tax positions
Unrecognized Tax Benefits
Additional Paid-in Capital
Additional Paid-in Capital [Member]
Lease liability
Deferred Tax Assets Lease Liability
Deferred tax assets lease liability.
Measurement Frequency
Measurement Frequency [Domain]
Share Repurchase Program, Authorized, Amount
Aggregate share repurchase price
Income Statement Location
Statement of Income Location, Balance [Axis]
Change in Accounting Principle, Accounting Standards Update, Adoption Date
Trading Symbol
Trading Symbol
Schedule Of Finite Lived Intangible Assets [Table]
Intangible Asset, Finite-Lived [Table]
Property and Equipment, Net
Property, Plant and Equipment Disclosure [Text Block]
Open tax year
Open Tax Year
Short-term investments
Equity Securities, FV-NI, Current
Short-term investments in equity securities
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Percent, Total
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Percent
Nondeductible expenses
Nondeductible items
Stock Issued During Period, Value, Conversion of Convertible Securities, Net of Adjustments, Total
Conversion of common stock
Stock Issued During Period, Value, Conversion of Convertible Securities, Net of Adjustments
Subsequent Event Type [Axis]
Summary of Other Intangible Assets
Schedule of Finite-Lived Intangible Assets [Table Text Block]
Disposal Group, Including Discontinued Operation, Prepaid and Other Assets, Current
Prepaid expenses, prepaid income taxes and other current assets
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract]
Financing Activities
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage
Line of credit facility unutilized commitment fee percentage
Fair Value, Measurements, Recurring
Fair Value, Recurring [Member]
Total lease payments
Lessee, Operating Lease, Liability, to be Paid
Operating lease obligations
Commitments And Contingencies [Table]
Commitments And Contingencies [Table]
Commitments and contingencies.
Less imputed interest
Lessee, Operating Lease, Liability, Undiscounted Excess Amount
Impairment in Operating Expense
Impairment in operating expense.
Impairment
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Percent
Federal R&D tax credits
Selling and Marketing Expense, Total
Sales and marketing
Selling and Marketing Expense
Sales and marketing
Deferred Policy Acquisition Costs, Policy [Policy Text Block]
Deferred Financing Costs
(Accumulated Deficit) Retained Earnings
Equity Components [Axis]
Held to maturity fair value
Held To Maturity Fair Value
Held to maturity fair value.
Total other income, net
Nonoperating Income (Expense)
Other income, net
Equity Component
Equity Component [Domain]
Goodwill and Intangible Assets Disclosure [Abstract]
Estimated Useful Life
Property Plant And Equipment Useful Life Description
Property plant and equipment useful life description.
Document Annual Report
Document Annual Report
Business Acquisition
Business Combination [Axis]
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures, Total
Issuance of common stock upon vesting of restricted stock units, Shares
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures
2023 CarOffer Transaction
Two Thousand Twenty Three CarOffer Transaction [Member]
Two thousand twenty three carOffer transaction.
Customer
Customer [Axis]
Depreciation, Depletion and Amortization, Nonproduction, Total
Depreciation and amortization
Depreciation, Depletion and Amortization, Nonproduction
Depreciation and amortization
Depreciation and Amortization
Right to voting
Common Stock, Voting Rights
Effective Income Tax Rate Reconciliation, Tax Contingency, Amount
Effective Income Tax Rate Reconciliation, Tax Contingency, Amount, Total
Changes in unrecognized tax benefits
Statement of Comprehensive Income [Abstract]
Deferred tax assets, federal net operating loss carryforwards
Deferred Tax Assets, Operating Loss Carryforwards, Domestic
Maximum
Maximum [Member]
Statistical Measurement
Statistical Measurement [Axis]
Exercised
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price
Accumulated Amortization
Finite-Lived Intangible Assets, Accumulated Amortization
Accumulated Amortization
Common Stock, Value, Issued, Ending Balance
Common Stock, Value, Issued, Beginning Balance
Common Stock, Value, Issued, Total
Common stock
Common Stock, Value, Issued
Net Income (Loss) Available to Common Stockholders, Diluted
Net Income (Loss) Available to Common Stockholders, Diluted, Total
Net income attributable to common stockholders - diluted
Document And Entity Information [Line Items]
Document And Entity Information [Line Items]
Document and entity information.
Payment of finance lease obligations
Finance Lease, Principal Payments
Line of credit facility maturity date
Line of Credit Facility, Expiration Date
Financing Receivable, Allowance for Credit Loss [Table]
Accrued expenses, accrued income taxes and other current liabilities
Disposal Group, Including Discontinued Operation, Accrued Expense, Accrued Income Taxes and Other Liabilities, Current
Amount classified as accrued liabilities, income tax obligations, other liabilities attributable to disposal group held for sale or disposed of, expected to be disposed of within one year or the normal operating cycle, if longer.
Effect of Fourth Quarter Events [Table Text Block]
Summary of Results from Operations
Principles of Consolidation
Consolidation, Policy [Policy Text Block]
Equipment [Member]
Capitalized Equipment
Prepaid expenses
Deferred Tax Liabilities, Prepaid Expenses
Business Acquisition, Period Results Included in the Combined Entity
Business acquisition, period results included in the combined entity.
Business acquisition valuation period
Income (Loss) from Continuing Operations, Per Diluted Share
Continuing operations
Net operating loss carryforwards
Deferred Tax Assets, Operating Loss Carryforwards, Total
Deferred Tax Assets, Operating Loss Carryforwards
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]
Impairment of Long-Lived Assets
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]
State taxes, net of federal benefit
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent
Amortization of Debt Issuance Costs
Amortization of deferred financing costs
Deferred Tax Asset Recognized From Impairment Of Goodwill
Deferred tax asset recognized from impairment of goodwill.
Deferred tax asset recognized from impairment of goodwill
Summary of Estimated Amortization Expense of Intangible Assets
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]
Net Income (Loss) from Continuing Operations Available to Common Shareholders, Diluted
Net income from continuing operations attributable to common stockholders-diluted
Entity Public Float
Entity Public Float
Preferred stock, shares authorized
Preferred Stock, Shares Authorized
Unpaid repurchases of common stock.
Unpaid Repurchases Of Common Stock
Unpaid repurchases of common stock
Comprehensive loss attributable to redeemable noncontrolling interests
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest, Total
Finite-Lived Intangible Assets by Major Class
Finite-Lived Intangible Assets by Major Class [Axis]
Elisa Palazzo [Member]
Elisa Palazzo.
Elisa Palazzo
Other adjustments
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Percent [Abstract]
Summary of Shares of Common Stock Reserved for Future Issuance
Schedule Of Shares Of Common Stock Reserved For Future Issuance Table [Text Block]
Schedule of shares of common stock reserved for future issuance.
Capitalized Website Development and Capitalized Internal-Use Software Costs
Research, Development, and Computer Software, Policy [Policy Text Block]
Revenue Recognition
Revenue from Contract with Customer [Text Block]
Entity Registrant Name
Entity Registrant Name
Debt Disclosure [Text Block]
Debt
Entity Voluntary Filers
Entity Voluntary Filers
Concentration of Credit Risk
Customer Concentration Risk [Member]
Finite-Lived Intangible Asset, Expected Amortization, Year Two
2027
Digital wholesale member.
Digital Wholesale [Member]
Digital Wholesale
Other Nonoperating Income (Expense), Total
Other income, net
Other Nonoperating Income (Expense)
Other (expense) income, net
State
Deferred State and Local Income Tax Expense (Benefit)
Conversion of stock
Conversion of Stock, Shares Issued
Subsequent Events [Abstract]
Disposal Group, Including Discontinued Operation, Depreciation and Amortization
Depreciation and amortization
Cybersecurity Risk Management Positions or Committees Responsible [Flag]
Finite-Lived Intangible Asset, Expected Amortization, Year Three
2028
Summary Of Significant Non Cash Items And Capital Expenditures Of Discontinued Operations [Table Text Block]
Summary of significant non cash items and capital expenditures of discontinued operations.
Summary of Significant Non-cash Items and Capital Expenditures of Discontinued Operations
Provision for (benefit from) income taxes
Income Tax Expense (Benefit)
Provision for income taxes
Provision for income taxes
Measurement Frequency
Measurement Frequency [Axis]
Repurchase of common stock
Stock Repurchased During Period, Value
Repurchase of common stock
Schedule of Estimated Useful Lives of Property and Equipment
Schedule Of Estimated Useful Life Table [Text Block]
Schedule of estimated useful life.
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
Concentration of Credit Risk
Concentration Risk, Credit Risk, Policy [Policy Text Block]
Disposal Group Classification [Axis]
Accumulated Other Comprehensive Income (Loss), Net of Tax, Total
Accumulated other comprehensive income (loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax
Accumulated other comprehensive income (loss)
Write–offs, net of recoveries
Allowance for doubtful accounts write offs, net
Accounts Receivable, Allowance for Credit Loss, Writeoff
Contingent Liabilities
Commitments and Contingencies, Policy [Policy Text Block]
Restructuring cost incurred and paid
Payments for Restructuring
Payments to Acquire Property, Plant, and Equipment, Total
Purchases of property and equipment
Payments to Acquire Property, Plant, and Equipment
Granted
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period
Number of units granted in period
Number of votes entitled to stockholders per share
Number Of Votes Entitled To Stockholders Per Share
Number of votes entitled to stockholders per share.
Total assets
Assets
Total assets
Schedule Of Property Plant And Equipment [Table]
Property, Plant and Equipment [Table]
Income Tax Paid, State and Local, after Refund Received
Income Tax Paid, State and Local, after Refund Received, Total
State
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term
Exercisable
Disposal Group, Including Discontinued Operation, Impairment
Disposal group, including discontinued operation, impairment.
Impairment
Income Statement [Abstract]
Effective Income Tax Rate Reconciliation, Cross-Border, Other, Percent
Other cross-border tax laws
Other cross-border tax laws
Income Tax Disclosure [Table]
Income Tax Disclosure [Table]
Income tax disclosure.
Fair Value of Financial Instruments
Fair Value of Financial Instruments, Policy [Policy Text Block]
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions
Decrease related to prior year tax provision
Decrease related to prior year tax provision
Stock-Based Compensation
Share-Based Payment Arrangement [Policy Text Block]
Operating expenses
Disposal Group, Including Discontinued Operation, Operating Expense [Abstract]
Disposal group, including discontinued operation, operating expense.
Deferred taxes
Deferred Income Tax Expense (Benefit)
Deferred provision (benefit)
Vested
Number of RSUs vested in period
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period
Number of units vested in period
Earnings Per Share, Diluted [Abstract]
Diluted
Net income per share attributable to common stockholders Diluted
Earnings Per Share, Diluted, Total
Earnings Per Share, Diluted
Consolidated
Diluted net income from continuing operations per share
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Summary of Segment Revenue, Income (Loss) and Depreciation and Amortization
Finite-Lived Intangible Asset, Expected Amortization, Year Five
2030
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Estimated Useful Life
Property, Plant, and Equipment, Useful Life, Term, Description [Extensible Enumeration]
Disposal Group, Including Discontinued Operation, Assets
Total assets of discontinued operations
Assets of discontinued operations
City Area Code
City Area Code
Auditor Name
Discontinued Operation, Tax Effect of Discontinued Operation
Benefit from income taxes
Benefit from income taxes
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest
Net loss from discontinued operations
Net loss from discontinued operations
Net loss from discontinued operations, net of tax benefits
Line of Credit Facility, Maximum Borrowing Capacity
Line of credit facility maximum borrowing amount
Matt Quinn [Member]
Matt Quinn.
Matt Quinn
Rule 10b 51 Arr Modified Flag
Rule 10b 51 Arr Modified Flag
Deferred Tax Assets, Tax Credit Carryforwards, Total
Credit carryforwards
Deferred Tax Assets, Tax Credit Carryforwards
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount
Federal R&D tax credits
Federal R&D tax credits
Net Income (Loss) from Continuing Operations Available to Common Shareholders, Basic
Net income from continuing operations attributable to common stockholders -basic
Variable Lease, Cost
Variable lease payments
Weighted average remaining lease term
Operating Lease, Weighted Average Remaining Lease Term
Segment Reporting Information [Line Items]
Segment Reporting Information [Line Items]
Server and Computer Equipment
Server And Computer Equipment [Member]
Server and computer equipment.
Lease, Cost, Total
Lease costs
Lease, Cost
Other
Effective Income Tax Rate Reconciliation, Tax Credit, Other, Percent
Other
Award Date
Award Date [Axis]
Letter of Credit [Member]
Letter of Credit Facility
Cash, Cash Equivalents, and Investments
Cash and Cash Equivalents, Policy [Policy Text Block]
Stock consideration
Issuance of stock for acquisition
Business acquisition, stock consideration
Property and equipment, net
Property, Plant and Equipment, Net, Ending Balance
Property, Plant and Equipment, Net, Beginning Balance
Property and equipment, net
Property, Plant and Equipment, Net
Disposal Group, Including Discontinued Operation, Goodwill, Noncurrent
Goodwill
Obtaining a right-of-use asset in exchange for a finance lease liability
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability
Goodwill
Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]
United states marketplace member.
United States Marketplace [Member]
U.S. Marketplace
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures, Total
Issuance of common stock upon vesting of restricted stock units
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures
Foreign
Deferred Foreign Income Tax Expense (Benefit)
Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent
Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent, Total
Non-current liabilities of discontinued operations
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations, Total
Cash, cash equivalents, and restricted cash at beginning of period
Cash, cash equivalents, and restricted cash at end of period
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation
Operating Income (Loss)
Income (Loss) from Operations
Total segment income (loss) from operations
Income from continuing operations
Award Date [Domain]
Award Date
Foreign currency translation adjustment
Goodwill, Foreign Currency Translation, Gain (Loss)
Net Income (Loss) from Discontinued Operations Available to Common Shareholders, Diluted
Net loss from discontinued operations attributable to common stockholders - diluted
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]
Summary of Revenue by Geographical Region
Retained Earnings
Retained Earnings [Member]
Employee Benefits and Share-Based Compensation
Income tax expense (benefit) related to stock-based compensation
Stock-based compensation expense
Stock based compensation
Share-based Payment Arrangement, Noncash Expense, Total
Share-Based Payment Arrangement, Noncash Expense
2015 Plan
Two Thousand Fifteen Plan [Member]
Two thousand fifteen plan.
Weighted average discount rate
Operating Lease, Weighted Average Discount Rate, Percent
Operating lease liabilities
Operating Lease, Liability, Noncurrent
Quoted Prices in Active Markets for Identical Assets (Level 1 Inputs)
Fair Value, Inputs, Level 1 [Member]
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation
Net cash used in financing activities
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Percent [Abstract]
Nontaxable or nondeductible expenses
Disallowed officer compensation
Effective Income Tax Rate Reconciliation Disallowed Officer Compensation
Effective income tax rate reconciliation disallowed officer compensation.
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]
Auditor Location
Developed Technology
Developed Technology Rights [Member]
Deferred Income Tax Liabilities, Net, Total
Deferred tax liabilities
Deferred Income Tax Liabilities, Net
Nonoperating Income (Expense) [Abstract]
Other income, net
Schedule Of Goodwill [Table]
Goodwill [Table]
Capital lease
Deferred Tax Liabilities Capital Lease
Deferred tax liabilities capital lease.
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Exit of Certain International Markets
Non-US [Member]
International
Schedule of Potentially Dilutive Common Stock Equivalents Excluded from Calculation of Diluted Weighted-average Shares Outstanding
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
Income Tax Authority
Income Tax Jurisdiction [Domain]
Entity Interactive Data Current
Entity Interactive Data Current
Deferred tax liabilities:
Deferred Tax Liabilities, Gross [Abstract]
Deferred revenue
Increase (Decrease) in Contract with Customer, Liability
Income Statement Location
Statement of Income Location, Balance [Domain]
Operating Activities
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract]
Furniture and Fixtures
Furniture and Fixtures [Member]
Disposal Group, Including Discontinued Operation, General and Administrative Expense
General and administrative
Disposal Group, Including Discontinued Operation, Gross Profit (Loss)
Gross (loss) profit
Gross (loss) profit
Segment revenue:
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Revenue by Geographic Region
Unbilled accounts receivable
Unbilled Receivables, Current
Number of RSUs vested and settled during period
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested And Settled In Period
Share based compensation arrangement by share based payment award equity instruments other than options vested and settled in period.
Sublease term description
Sublease Term Description
Sublease term description.
Share-Based Payment Arrangement, Expense, Tax Benefit
Income tax expense (benefit) from stock-based compensation expense
Entity Tax Identification Number
Entity Tax Identification Number
Income Tax Authority, Name
Income Tax Authority, Name [Domain]
Accrued Sales Commission, Current
Accrued commissions
Local Phone Number
Local Phone Number
Capitalized equipment.
Capitalized Equipment [Member]
Capitalized Equipment
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Weighted-average number of shares of common stock used in computing net income per share attributable to common stockholders
Denominator
Auditor Opinion [Text Block]
Deferred taxes under Operating Activities
Deferred taxes under operating activities.
Deferred taxes
Restructuring Costs
Restructuring Costs, Total
Wind-down total expenditure incurred
Contract with Customer, Asset, after Allowance for Credit Loss, Noncurrent, Total
Deferred contract costs, net of current portion
Contract with Customer, Asset, after Allowance for Credit Loss, Noncurrent
Accounting Policies [Abstract]
Total Revenue
Revenue from Contract with Customer, Excluding Assessed Tax, Total
Revenue
Revenue from Contract with Customer, Excluding Assessed Tax
Numerator:
Net Income (Loss) Attributable to Parent [Abstract]
Schedule Of Earnings Per Share Basic By Common Class [Table]
Earnings Per Share, Basic, by Common Class, Including Two-Class Method [Table]
Lessee, Operating Lease, Liability, to be Paid, Year Four
2029
Class of Stock
Class of Stock [Domain]
Number of shares available for issuance during period
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant
Unrecognized stock-based compensation expense, expected period for recognition
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition
Deferred tax expense
Deferred Tax Liabilities
Deferred commissions
Deferred Tax Liabilities, Deferred Expense
Defined contribution plan, maximum annual contributions per employee, percent
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent
Goodwill, Impaired, Accumulated Impairment Loss
Accumulated impairment losses of goodwill
Entity Emerging Growth Company
Entity Emerging Growth Company
Disposal Group, Including Discontinued Operation, Operating Income (Loss)
Loss from discontinued operations
Loss from discontinued operations