3.21.4 html 537 591 1 true 125 0 false 12 false false R1.htm 1001 - Document - Cover Sheet http://www.adtheorent.com/role/Cover Cover Cover 1 false false R2.htm 1002 - Statement - Consolidated Balance Sheets Sheet http://www.adtheorent.com/role/ConsolidatedBalanceSheets Consolidated Balance Sheets Statements 2 false false R3.htm 1003 - Statement - Consolidated Balance Sheets (Parenthetical) Sheet http://www.adtheorent.com/role/ConsolidatedBalanceSheetsParenthetical Consolidated Balance Sheets (Parenthetical) Statements 3 false false R4.htm 1004 - Statement - Consolidated Statements of Operations Sheet http://www.adtheorent.com/role/ConsolidatedStatementsOfOperations Consolidated Statements of Operations Statements 4 false false R5.htm 1005 - Statement - Consolidated Statements of Operations (Parenthetical) Sheet http://www.adtheorent.com/role/ConsolidatedStatementsOfOperationsParenthetical Consolidated Statements of Operations (Parenthetical) Statements 5 false false R6.htm 1006 - Statement - Condensed Consolidated Statements Of Changes In Stockholders' Equity Sheet http://www.adtheorent.com/role/CondensedConsolidatedStatementsOfChangesInStockholdersEquity Condensed Consolidated Statements Of Changes In Stockholders' Equity Statements 6 false false R7.htm 1007 - Statement - Condensed Consolidated Statements Of Changes In Stockholders' Equity (Parenthetical) Sheet http://www.adtheorent.com/role/CondensedConsolidatedStatementsOfChangesInStockholdersEquityParenthetical Condensed Consolidated Statements Of Changes In Stockholders' Equity (Parenthetical) Statements 7 false false R8.htm 1008 - Statement - Condensed Consolidated Statement of Cash Flows Sheet http://www.adtheorent.com/role/CondensedConsolidatedStatementOfCashFlows Condensed Consolidated Statement of Cash Flows Statements 8 false false R9.htm 1009 - Disclosure - Description of Organization and Business Operations Sheet http://www.adtheorent.com/role/DescriptionOfOrganizationAndBusinessOperations Description of Organization and Business Operations Notes 9 false false R10.htm 1010 - Disclosure - Summary of Significant Accounting Policies Sheet http://www.adtheorent.com/role/SummaryOfSignificantAccountingPolicies Summary of Significant Accounting Policies Notes 10 false false R11.htm 1011 - Disclosure - Initial Public Offering Sheet http://www.adtheorent.com/role/InitialPublicOffering Initial Public Offering Notes 11 false false R12.htm 1012 - Disclosure - Revenue Recognition Sheet http://www.adtheorent.com/role/RevenueRecognition Revenue Recognition Notes 12 false false R13.htm 1013 - Disclosure - Net Income Per unit Sheet http://www.adtheorent.com/role/NetIncomePerUnit Net Income Per unit Notes 13 false false R14.htm 1014 - Disclosure - Accounts Receivable,Net Sheet http://www.adtheorent.com/role/AccountsReceivableNet Accounts Receivable,Net Notes 14 false false R15.htm 1015 - Disclosure - Property And Equipment, Net Sheet http://www.adtheorent.com/role/PropertyAndEquipmentNet Property And Equipment, Net Notes 15 false false R16.htm 1016 - Disclosure - IntangibleAssets, Net Sheet http://www.adtheorent.com/role/IntangibleassetsNet IntangibleAssets, Net Notes 16 false false R17.htm 1017 - Disclosure - Private Placement Sheet http://www.adtheorent.com/role/PrivatePlacement Private Placement Notes 17 false false R18.htm 1018 - Disclosure - Related Party Transactions Sheet http://www.adtheorent.com/role/RelatedPartyTransactions Related Party Transactions Notes 18 false false R19.htm 1019 - Disclosure - Commitments Sheet http://www.adtheorent.com/role/Commitments Commitments Notes 19 false false R20.htm 1020 - Disclosure - Warrant Liability Sheet http://www.adtheorent.com/role/WarrantLiability Warrant Liability Notes 20 false false R21.htm 1021 - Disclosure - Stockholders' Equity Sheet http://www.adtheorent.com/role/StockholdersEquity Stockholders' Equity Notes 21 false false R22.htm 1022 - Disclosure - Fair Value Measurements Sheet http://www.adtheorent.com/role/FairValueMeasurements Fair Value Measurements Notes 22 false false R23.htm 1023 - Disclosure - Business Combination Sheet http://www.adtheorent.com/role/BusinessCombination Business Combination Notes 23 false false R24.htm 1024 - Disclosure - Restatement of Previously Issued Financial Statements Sheet http://www.adtheorent.com/role/RestatementOfPreviouslyIssuedFinancialStatements Restatement of Previously Issued Financial Statements Notes 24 false false R25.htm 1025 - Disclosure - Risks, Uncertainties, and Concentrations Sheet http://www.adtheorent.com/role/RisksUncertaintiesAndConcentrations Risks, Uncertainties, and Concentrations Notes 25 false false R26.htm 1026 - Disclosure - Members' Equity Sheet http://www.adtheorent.com/role/MembersEquity Members' Equity Notes 26 false false R27.htm 1027 - Disclosure - Employee Savings Sheet http://www.adtheorent.com/role/EmployeeSavings Employee Savings Notes 27 false false R28.htm 1028 - Disclosure - Goodwill Sheet http://www.adtheorent.com/role/Goodwill Goodwill Notes 28 false false R29.htm 1029 - Disclosure - Accrued Expenses Sheet http://www.adtheorent.com/role/AccruedExpenses Accrued Expenses Notes 29 false false R30.htm 1030 - Disclosure - Debt Sheet http://www.adtheorent.com/role/Debt Debt Notes 30 false false R31.htm 1031 - Disclosure - Safe Notes Notes http://www.adtheorent.com/role/SafeNotes Safe Notes Notes 31 false false R32.htm 1032 - Disclosure - Subsequent Events Sheet http://www.adtheorent.com/role/SubsequentEvents Subsequent Events Notes 32 false false R33.htm 1033 - Disclosure - Income Taxes Sheet http://www.adtheorent.com/role/IncomeTaxes Income Taxes Notes 33 false false R34.htm 1034 - Disclosure - Equity-Based Compensation Expense Sheet http://www.adtheorent.com/role/EquityBasedCompensationExpense Equity-Based Compensation Expense Notes 34 false false R35.htm 1035 - Disclosure - Noncontrolling Interests Sheet http://www.adtheorent.com/role/NoncontrollingInterests Noncontrolling Interests Notes 35 false false R36.htm 1036 - Disclosure - Segment And Geographic Information Sheet http://www.adtheorent.com/role/SegmentAndGeographicInformation Segment And Geographic Information Notes 36 false false R37.htm 1037 - Disclosure - Summary of Significant Accounting Policies (Policies) Sheet http://www.adtheorent.com/role/SummaryOfSignificantAccountingPoliciesPolicies Summary of Significant Accounting Policies (Policies) Policies http://www.adtheorent.com/role/SummaryOfSignificantAccountingPolicies 37 false false R38.htm 1038 - Disclosure - Summary of Significant Accounting Policies (Tables) Sheet http://www.adtheorent.com/role/SummaryOfSignificantAccountingPoliciesTables Summary of Significant Accounting Policies (Tables) Tables http://www.adtheorent.com/role/SummaryOfSignificantAccountingPolicies 38 false false R39.htm 1039 - Disclosure - Net Income Per unit (Tables) Sheet http://www.adtheorent.com/role/NetIncomePerUnitTables Net Income Per unit (Tables) Tables http://www.adtheorent.com/role/NetIncomePerUnit 39 false false R40.htm 1040 - Disclosure - Accounts Receivable Net (Tables) Sheet http://www.adtheorent.com/role/AccountsReceivableNetTables Accounts Receivable Net (Tables) Tables http://www.adtheorent.com/role/AccountsReceivableNet 40 false false R41.htm 1041 - Disclosure - Property And Equipment, Net (Tables) Sheet http://www.adtheorent.com/role/PropertyAndEquipmentNetTables Property And Equipment, Net (Tables) Tables http://www.adtheorent.com/role/PropertyAndEquipmentNet 41 false false R42.htm 1042 - Disclosure - IntangibleAssets, Net - (Tables) Sheet http://www.adtheorent.com/role/IntangibleassetsNetTables IntangibleAssets, Net - (Tables) Tables http://www.adtheorent.com/role/IntangibleassetsNet 42 false false R43.htm 1043 - Disclosure - Segment And Geographic Information (Tables) Sheet http://www.adtheorent.com/role/SegmentAndGeographicInformationTables Segment And Geographic Information (Tables) Tables http://www.adtheorent.com/role/SegmentAndGeographicInformation 43 false false R44.htm 1044 - Disclosure - Commitments (Tables) Sheet http://www.adtheorent.com/role/CommitmentsTables Commitments (Tables) Tables http://www.adtheorent.com/role/Commitments 44 false false R45.htm 1045 - Disclosure - Fair Value Measurements (Tables) Sheet http://www.adtheorent.com/role/FairValueMeasurementsTables Fair Value Measurements (Tables) Tables http://www.adtheorent.com/role/FairValueMeasurements 45 false false R46.htm 1046 - Disclosure - Restatement of Previously Issued Financial Statements (Tables) Sheet http://www.adtheorent.com/role/RestatementOfPreviouslyIssuedFinancialStatementsTables Restatement of Previously Issued Financial Statements (Tables) Tables http://www.adtheorent.com/role/RestatementOfPreviouslyIssuedFinancialStatements 46 false false R47.htm 1047 - Disclosure - Accrued Expenses (Tables) Sheet http://www.adtheorent.com/role/AccruedExpensesTables Accrued Expenses (Tables) Tables http://www.adtheorent.com/role/AccruedExpenses 47 false false R48.htm 1048 - Disclosure - Debt (Tables) Sheet http://www.adtheorent.com/role/DebtTables Debt (Tables) Tables http://www.adtheorent.com/role/Debt 48 false false R49.htm 1049 - Disclosure - Income Taxes (Tables) Sheet http://www.adtheorent.com/role/IncomeTaxesTables Income Taxes (Tables) Tables http://www.adtheorent.com/role/IncomeTaxes 49 false false R50.htm 1050 - Disclosure - Equity-Based Compensation Expense (Tables) Sheet http://www.adtheorent.com/role/EquityBasedCompensationExpenseTables Equity-Based Compensation Expense (Tables) Tables http://www.adtheorent.com/role/EquityBasedCompensationExpense 50 false false R51.htm 1051 - Disclosure - Members' Equity (Tables) Sheet http://www.adtheorent.com/role/MembersEquityTables Members' Equity (Tables) Tables http://www.adtheorent.com/role/MembersEquity 51 false false R52.htm 1052 - Disclosure - Description of Organization and Business Operations (Details) Sheet http://www.adtheorent.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails Description of Organization and Business Operations (Details) Details http://www.adtheorent.com/role/DescriptionOfOrganizationAndBusinessOperations 52 false false R53.htm 1053 - Disclosure - Summary of Significant Accounting Policies (Details) Sheet http://www.adtheorent.com/role/SummaryOfSignificantAccountingPoliciesDetails Summary of Significant Accounting Policies (Details) Details http://www.adtheorent.com/role/SummaryOfSignificantAccountingPoliciesTables 53 false false R54.htm 1054 - Disclosure - Summary of Significant Accounting Policies - Reconciliation of Net Loss per Common Share (Details) Sheet http://www.adtheorent.com/role/SummaryOfSignificantAccountingPoliciesReconciliationOfNetLossPerCommonShareDetails Summary of Significant Accounting Policies - Reconciliation of Net Loss per Common Share (Details) Details 54 false false R55.htm 1055 - Disclosure - Summary of Significant Accounting Policies - Summary of Property Plant And Equipment Estimated Useful Lives (Details) Sheet http://www.adtheorent.com/role/SummaryOfSignificantAccountingPoliciesSummaryOfPropertyPlantAndEquipmentEstimatedUsefulLivesDetails Summary of Significant Accounting Policies - Summary of Property Plant And Equipment Estimated Useful Lives (Details) Details 55 false false R56.htm 1056 - Disclosure - Summary of Significant Accounting Policies - Summary of Finite Lived Intangible Assets Useful Lives (Details) Sheet http://www.adtheorent.com/role/SummaryOfSignificantAccountingPoliciesSummaryOfFiniteLivedIntangibleAssetsUsefulLivesDetails Summary of Significant Accounting Policies - Summary of Finite Lived Intangible Assets Useful Lives (Details) Details 56 false false R57.htm 1057 - Disclosure - Initial Public Offering (Details) Sheet http://www.adtheorent.com/role/InitialPublicOfferingDetails Initial Public Offering (Details) Details http://www.adtheorent.com/role/InitialPublicOffering 57 false false R58.htm 1058 - Disclosure - Revenue Recognition - Additional information (Details) Sheet http://www.adtheorent.com/role/RevenueRecognitionAdditionalInformationDetails Revenue Recognition - Additional information (Details) Details 58 false false R59.htm 1059 - Disclosure - Net Income Per unit - Schedule of Earnings Per Share, Basic and Diluted (Details) Sheet http://www.adtheorent.com/role/NetIncomePerUnitScheduleOfEarningsPerShareBasicAndDilutedDetails Net Income Per unit - Schedule of Earnings Per Share, Basic and Diluted (Details) Details 59 false false R60.htm 1060 - Disclosure - Net Income Per unit - Additional Information (Details) Sheet http://www.adtheorent.com/role/NetIncomePerUnitAdditionalInformationDetails Net Income Per unit - Additional Information (Details) Details 60 false false R61.htm 1061 - Disclosure - Accounts Receivable,Net - Schedule Of Accounts Receivable (Details) Sheet http://www.adtheorent.com/role/AccountsReceivableNetScheduleOfAccountsReceivableDetails Accounts Receivable,Net - Schedule Of Accounts Receivable (Details) Details 61 false false R62.htm 1062 - Disclosure - Accounts Receivable,Net - Additional Information (Details) Sheet http://www.adtheorent.com/role/AccountsReceivableNetAdditionalInformationDetails Accounts Receivable,Net - Additional Information (Details) Details 62 false false R63.htm 1063 - Disclosure - Property And Equipment, Net - Schedule of Property, Plant and Equipment (Details) Sheet http://www.adtheorent.com/role/PropertyAndEquipmentNetScheduleOfPropertyPlantAndEquipmentDetails Property And Equipment, Net - Schedule of Property, Plant and Equipment (Details) Details 63 false false R64.htm 1064 - Disclosure - Property And Equipment, Net - Additional Information (Details) Sheet http://www.adtheorent.com/role/PropertyAndEquipmentNetAdditionalInformationDetails Property And Equipment, Net - Additional Information (Details) Details 64 false false R65.htm 1065 - Disclosure - IntangibleAssets, Net - Schedule of Intangible Assets Net (Details) Sheet http://www.adtheorent.com/role/IntangibleassetsNetScheduleOfIntangibleAssetsNetDetails IntangibleAssets, Net - Schedule of Intangible Assets Net (Details) Details 65 false false R66.htm 1066 - Disclosure - IntangibleAssets, Net - Schedule of Amortization expense (Details) Sheet http://www.adtheorent.com/role/IntangibleassetsNetScheduleOfAmortizationExpenseDetails IntangibleAssets, Net - Schedule of Amortization expense (Details) Details 66 false false R67.htm 1067 - Disclosure - IntangibleAssets, Net - Schedule of Future Amortization of Intangible Assets (Details) Sheet http://www.adtheorent.com/role/IntangibleassetsNetScheduleOfFutureAmortizationOfIntangibleAssetsDetails IntangibleAssets, Net - Schedule of Future Amortization of Intangible Assets (Details) Details 67 false false R68.htm 1068 - Disclosure - IntangibleAssets, Net - Additional Information (Details) Sheet http://www.adtheorent.com/role/IntangibleassetsNetAdditionalInformationDetails IntangibleAssets, Net - Additional Information (Details) Details 68 false false R69.htm 1069 - Disclosure - Private Placement (Details) Sheet http://www.adtheorent.com/role/PrivatePlacementDetails Private Placement (Details) Details http://www.adtheorent.com/role/PrivatePlacement 69 false false R70.htm 1070 - Disclosure - Related Party Transactions - Founder Shares (Details) Sheet http://www.adtheorent.com/role/RelatedPartyTransactionsFounderSharesDetails Related Party Transactions - Founder Shares (Details) Details 70 false false R71.htm 1071 - Disclosure - Related Party Transactions (Details) Sheet http://www.adtheorent.com/role/RelatedPartyTransactionsDetails Related Party Transactions (Details) Details http://www.adtheorent.com/role/RelatedPartyTransactions 71 false false R72.htm 1072 - Disclosure - Commitments (Details) Sheet http://www.adtheorent.com/role/CommitmentsDetails Commitments (Details) Details http://www.adtheorent.com/role/CommitmentsTables 72 false false R73.htm 1073 - Disclosure - Commitments and Contingencies - Schedule of future minimum rental payments for operating leases (Details) Sheet http://www.adtheorent.com/role/CommitmentsAndContingenciesScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesDetails Commitments and Contingencies - Schedule of future minimum rental payments for operating leases (Details) Details 73 false false R74.htm 1074 - Disclosure - Commitments and Contingencies - Additional Information (Details) Sheet http://www.adtheorent.com/role/CommitmentsAndContingenciesAdditionalInformationDetails Commitments and Contingencies - Additional Information (Details) Details 74 false false R75.htm 1075 - Disclosure - Warrant Liability (Details) Sheet http://www.adtheorent.com/role/WarrantLiabilityDetails Warrant Liability (Details) Details http://www.adtheorent.com/role/WarrantLiability 75 false false R76.htm 1076 - Disclosure - Stockholders' Equity - Preferred Stock Shares (Details) Sheet http://www.adtheorent.com/role/StockholdersEquityPreferredStockSharesDetails Stockholders' Equity - Preferred Stock Shares (Details) Details 76 false false R77.htm 1077 - Disclosure - Stockholders' Equity - Common Stock Shares (Details) Sheet http://www.adtheorent.com/role/StockholdersEquityCommonStockSharesDetails Stockholders' Equity - Common Stock Shares (Details) Details 77 false false R78.htm 1078 - Disclosure - Stockholders' Equity - Warrants (Details) Sheet http://www.adtheorent.com/role/StockholdersEquityWarrantsDetails Stockholders' Equity - Warrants (Details) Details 78 false false R79.htm 1079 - Disclosure - Fair Value Measurements - Fair Value Assets And Liabilities Measured On Recurring Basis (Details) Sheet http://www.adtheorent.com/role/FairValueMeasurementsFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisDetails Fair Value Measurements - Fair Value Assets And Liabilities Measured On Recurring Basis (Details) Details 79 false false R80.htm 1080 - Disclosure - Fair Value Measurements - Initial Measurement (Details) Sheet http://www.adtheorent.com/role/FairValueMeasurementsInitialMeasurementDetails Fair Value Measurements - Initial Measurement (Details) Details 80 false false R81.htm 1081 - Disclosure - Fair Value Measurements - Change in the Fair Value of the Warrant Liabilities (Details) Sheet http://www.adtheorent.com/role/FairValueMeasurementsChangeInTheFairValueOfTheWarrantLiabilitiesDetails Fair Value Measurements - Change in the Fair Value of the Warrant Liabilities (Details) Details 81 false false R82.htm 1082 - Disclosure - Fair Value Measurements - Additional information (Details) Sheet http://www.adtheorent.com/role/FairValueMeasurementsAdditionalInformationDetails Fair Value Measurements - Additional information (Details) Details 82 false false R83.htm 1083 - Disclosure - Restatement of Previously Issued Financial Statements (Detail) Sheet http://www.adtheorent.com/role/RestatementOfPreviouslyIssuedFinancialStatementsDetail Restatement of Previously Issued Financial Statements (Detail) Details http://www.adtheorent.com/role/RestatementOfPreviouslyIssuedFinancialStatementsTables 83 false false R84.htm 1084 - Disclosure - Restatement of Previously Issued Financial Statements (Detail) (Parenthtical) Sheet http://www.adtheorent.com/role/RestatementOfPreviouslyIssuedFinancialStatementsDetailParenthtical Restatement of Previously Issued Financial Statements (Detail) (Parenthtical) Details http://www.adtheorent.com/role/RestatementOfPreviouslyIssuedFinancialStatementsTables 84 false false R85.htm 1085 - Disclosure - Restatement of Previously Issued Financial Statements - Additional Information (Details) Sheet http://www.adtheorent.com/role/RestatementOfPreviouslyIssuedFinancialStatementsAdditionalInformationDetails Restatement of Previously Issued Financial Statements - Additional Information (Details) Details 85 false false R86.htm 1086 - Disclosure - Goodwill - Additional Information (Detail) Sheet http://www.adtheorent.com/role/GoodwillAdditionalInformationDetail Goodwill - Additional Information (Detail) Details 86 false false R87.htm 1087 - Disclosure - Risks, Uncertainties, and Concentrations - Additional Information (Details) Sheet http://www.adtheorent.com/role/RisksUncertaintiesAndConcentrationsAdditionalInformationDetails Risks, Uncertainties, and Concentrations - Additional Information (Details) Details 87 false false R88.htm 1088 - Disclosure - Accrued Expenses - Schedule of Accrued Expenses (Detail) Sheet http://www.adtheorent.com/role/AccruedExpensesScheduleOfAccruedExpensesDetail Accrued Expenses - Schedule of Accrued Expenses (Detail) Details 88 false false R89.htm 1089 - Disclosure - Debt - Schedule Of Debt Instruments (Detail) Sheet http://www.adtheorent.com/role/DebtScheduleOfDebtInstrumentsDetail Debt - Schedule Of Debt Instruments (Detail) Details 89 false false R90.htm 1090 - Disclosure - Debt - Additional Information (Detail) Sheet http://www.adtheorent.com/role/DebtAdditionalInformationDetail Debt - Additional Information (Detail) Details 90 false false R91.htm 1091 - Disclosure - Safe Notes - Additional Information (Detail) Notes http://www.adtheorent.com/role/SafeNotesAdditionalInformationDetail Safe Notes - Additional Information (Detail) Details 91 false false R92.htm 1092 - Disclosure - Income Taxes - Schedule Of Components Of Income Before Income Taxes (Detail) Sheet http://www.adtheorent.com/role/IncomeTaxesScheduleOfComponentsOfIncomeBeforeIncomeTaxesDetail Income Taxes - Schedule Of Components Of Income Before Income Taxes (Detail) Details 92 false false R93.htm 1093 - Disclosure - Income Taxes - Schedule Of Components Income Tax Expense Benefit (Detail) Sheet http://www.adtheorent.com/role/IncomeTaxesScheduleOfComponentsIncomeTaxExpenseBenefitDetail Income Taxes - Schedule Of Components Income Tax Expense Benefit (Detail) Details 93 false false R94.htm 1094 - Disclosure - Income Taxes - Schedule Of Effective Income Tax Rate Reconciliation (Detail) Sheet http://www.adtheorent.com/role/IncomeTaxesScheduleOfEffectiveIncomeTaxRateReconciliationDetail Income Taxes - Schedule Of Effective Income Tax Rate Reconciliation (Detail) Details 94 false false R95.htm 1095 - Disclosure - Income Taxes - Schedule Of Deferred Tax Assets And Liabilities (Detail) Sheet http://www.adtheorent.com/role/IncomeTaxesScheduleOfDeferredTaxAssetsAndLiabilitiesDetail Income Taxes - Schedule Of Deferred Tax Assets And Liabilities (Detail) Details 95 false false R96.htm 1096 - Disclosure - Income Taxes - Schedule Of Unrecognized Tax Benefits (Detail) Sheet http://www.adtheorent.com/role/IncomeTaxesScheduleOfUnrecognizedTaxBenefitsDetail Income Taxes - Schedule Of Unrecognized Tax Benefits (Detail) Details 96 false false R97.htm 1097 - Disclosure - Income Taxes - Additional Information (Detail) Sheet http://www.adtheorent.com/role/IncomeTaxesAdditionalInformationDetail Income Taxes - Additional Information (Detail) Details 97 false false R98.htm 1098 - Disclosure - Equity-Based Compensation Expense - Additional Information (Detail) Sheet http://www.adtheorent.com/role/EquityBasedCompensationExpenseAdditionalInformationDetail Equity-Based Compensation Expense - Additional Information (Detail) Details 98 false false R99.htm 1099 - Disclosure - Equity-Based Compensation Expense - Share-based Payment Arrangement, Expensed and Capitalized, Amount (Detail) Sheet http://www.adtheorent.com/role/EquityBasedCompensationExpenseShareBasedPaymentArrangementExpensedAndCapitalizedAmountDetail Equity-Based Compensation Expense - Share-based Payment Arrangement, Expensed and Capitalized, Amount (Detail) Details 99 false false R100.htm 1100 - Disclosure - Equity-Based Compensation Expense - Disclosure of Share-based Compensation Arrangements by Share-based Payment Award (Detail) Sheet http://www.adtheorent.com/role/EquityBasedCompensationExpenseDisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardDetail Equity-Based Compensation Expense - Disclosure of Share-based Compensation Arrangements by Share-based Payment Award (Detail) Details 100 false false R101.htm 1101 - Disclosure - Equity-Based Compensation Expense - Disclosure of Share-based Compensation Arrangements by Share-based Payment Award (Parenthetical) (Detail) Sheet http://www.adtheorent.com/role/EquityBasedCompensationExpenseDisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardParentheticalDetail Equity-Based Compensation Expense - Disclosure of Share-based Compensation Arrangements by Share-based Payment Award (Parenthetical) (Detail) Details 101 false false R102.htm 1102 - Disclosure - Equity-Based Compensation Expense - Schedule of Nonvested Restricted Stock Units Activity (Detail) Sheet http://www.adtheorent.com/role/EquityBasedCompensationExpenseScheduleOfNonvestedRestrictedStockUnitsActivityDetail Equity-Based Compensation Expense - Schedule of Nonvested Restricted Stock Units Activity (Detail) Details 102 false false R103.htm 1103 - Disclosure - Equity-Based Compensation Expense - Schedule of Nonvested Restricted Stock Units Activity (Parenthetical) (Detail) Sheet http://www.adtheorent.com/role/EquityBasedCompensationExpenseScheduleOfNonvestedRestrictedStockUnitsActivityParentheticalDetail Equity-Based Compensation Expense - Schedule of Nonvested Restricted Stock Units Activity (Parenthetical) (Detail) Details 103 false false R104.htm 1104 - Disclosure - Employee Savings - Additional Information (Detail) Sheet http://www.adtheorent.com/role/EmployeeSavingsAdditionalInformationDetail Employee Savings - Additional Information (Detail) Details 104 false false R105.htm 1105 - Disclosure - Members' Equity - Schedule of Common Units Issued and Outstanding (Details) Sheet http://www.adtheorent.com/role/MembersEquityScheduleOfCommonUnitsIssuedAndOutstandingDetails Members' Equity - Schedule of Common Units Issued and Outstanding (Details) Details 105 false false R106.htm 1106 - Disclosure - Segment And Geographic Information - Schedule of Segment and Geographic Information (Details) Sheet http://www.adtheorent.com/role/SegmentAndGeographicInformationScheduleOfSegmentAndGeographicInformationDetails Segment And Geographic Information - Schedule of Segment and Geographic Information (Details) Details 106 false false R107.htm 1107 - Disclosure - Equity-Based Compensation Expense - Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions (Detail) Sheet http://www.adtheorent.com/role/EquityBasedCompensationExpenseScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsDetail Equity-Based Compensation Expense - Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions (Detail) Details 107 false false R108.htm 1108 - Disclosure - Noncontrolling Interests - Additional Information (Details) Sheet http://www.adtheorent.com/role/NoncontrollingInterestsAdditionalInformationDetails Noncontrolling Interests - Additional Information (Details) Details 108 false false R109.htm 1109 - Schedule - Schedule I - Condensed Balance Sheets (Detail) Sheet http://www.adtheorent.com/role/ScheduleICondensedBalanceSheetsDetail Schedule I - Condensed Balance Sheets (Detail) Details 109 false false R110.htm 1110 - Schedule - Schedule I - Condensed Balance Sheets (Parenthetical) (Detail) Sheet http://www.adtheorent.com/role/ScheduleICondensedBalanceSheetsParentheticalDetail Schedule I - Condensed Balance Sheets (Parenthetical) (Detail) Details 110 false false R111.htm 1111 - Schedule - Schedule I - Condensed Statements of Operations (Detail) Sheet http://www.adtheorent.com/role/ScheduleICondensedStatementsOfOperationsDetail Schedule I - Condensed Statements of Operations (Detail) Details 111 false false All Reports Book All Reports d212285ds1.htm adth-20210930.xsd adth-20210930_cal.xml adth-20210930_def.xml adth-20210930_lab.xml adth-20210930_pre.xml d212285dex231.htm d212285dex232.htm d212285dex41.htm d212285dex51.htm g212285g00a01.jpg g212285g01a01.jpg g212285g92b10.jpg g212285g98c37.jpg http://fasb.org/us-gaap/2021-01-31 http://xbrl.sec.gov/dei/2021 http://fasb.org/srt/2021-01-31 http://xbrl.sec.gov/stpr/2021 http://xbrl.sec.gov/country/2021 true true