3.23.1 html 155 400 1 false 59 0 false 8 false false R1.htm 100000 - Document - Document and Entity Information Sheet http://eargo.com/20221231/taxonomy/role/Role_DocumentDocumentAndEntityInformation Document and Entity Information Cover 1 false false R2.htm 100010 - Statement - Consolidated Balance Sheets Sheet http://eargo.com/20221231/taxonomy/role/Role_StatementConsolidatedBalanceSheets Consolidated Balance Sheets Statements 2 false false R3.htm 100020 - Statement - Consolidated Balance Sheets (Parenthetical) Sheet http://eargo.com/20221231/taxonomy/role/Role_StatementConsolidatedBalanceSheetsParenthetical Consolidated Balance Sheets (Parenthetical) Statements 3 false false R4.htm 100030 - Statement - Consolidated Statements of Operations and Comprehensive Loss Sheet http://eargo.com/20221231/taxonomy/role/Role_StatementConsolidatedStatementsOfOperationsAndComprehensiveLoss Consolidated Statements of Operations and Comprehensive Loss Statements 4 false false R5.htm 100040 - Statement - Consolidated Statements of Convertible Preferred Stock and Stockholders' Equity Sheet http://eargo.com/20221231/taxonomy/role/StatementConsolidatedStatementsOfConvertiblePreferredStockAndStockholdersEquity1 Consolidated Statements of Convertible Preferred Stock and Stockholders' Equity Statements 5 false false R6.htm 100050 - Statement - Consolidated Statements of Convertible Preferred Stock and Stockholders' Equity (Parenthetical) Sheet http://eargo.com/20221231/taxonomy/role/StatementConsolidatedStatementsOfConvertiblePreferredStockAndStockholdersEquityParenthetical Consolidated Statements of Convertible Preferred Stock and Stockholders' Equity (Parenthetical) Statements 6 false false R7.htm 100060 - Statement - Consolidated Statements of Cash Flows Sheet http://eargo.com/20221231/taxonomy/role/Role_StatementConsolidatedStatementsOfCashFlows Consolidated Statements of Cash Flows Statements 7 false false R8.htm 100070 - Disclosure - Description of Business and Other Matters Sheet http://eargo.com/20221231/taxonomy/role/DisclosureDescriptionOfBusinessAndOtherMatters Description of Business and Other Matters Notes 8 false false R9.htm 100080 - Disclosure - Summary of Significant Accounting Policies Sheet http://eargo.com/20221231/taxonomy/role/Role_DisclosureSummaryOfSignificantAccountingPolicies Summary of Significant Accounting Policies Notes 9 false false R10.htm 100090 - Disclosure - Fair Value Measurements Sheet http://eargo.com/20221231/taxonomy/role/Role_DisclosureFairValueMeasurements Fair Value Measurements Notes 10 false false R11.htm 100100 - Disclosure - Balance Sheet Components Sheet http://eargo.com/20221231/taxonomy/role/Role_DisclosureBalanceSheetComponents Balance Sheet Components Notes 11 false false R12.htm 100110 - Disclosure - Acquisitions Sheet http://eargo.com/20221231/taxonomy/role/DisclosureAcquisitions Acquisitions Notes 12 false false R13.htm 100120 - Disclosure - Commitments and Contingencies Sheet http://eargo.com/20221231/taxonomy/role/Role_DisclosureCommitmentsAndContingencies Commitments and Contingencies Notes 13 false false R14.htm 100130 - Disclosure - Goodwill and Intangible Assets Sheet http://eargo.com/20221231/taxonomy/role/DisclosureGoodwillAndIntangibleAssets1 Goodwill and Intangible Assets Notes 14 false false R15.htm 100140 - Disclosure - Rights Offering and debt obligations Sheet http://eargo.com/20221231/taxonomy/role/DisclosureRightsOfferingAndDebtObligations Rights Offering and debt obligations Notes 15 false false R16.htm 100160 - Disclosure - Stock-based Compensation Sheet http://eargo.com/20221231/taxonomy/role/Role_DisclosureStockBasedCompensation Stock-based Compensation Notes 16 false false R17.htm 100170 - Disclosure - Income Taxes Sheet http://eargo.com/20221231/taxonomy/role/Role_DisclosureIncomeTaxes Income Taxes Notes 17 false false R18.htm 100180 - Disclosure - Net Loss Per Share Attributable To Common Stockholders Sheet http://eargo.com/20221231/taxonomy/role/Role_DisclosureNetLossPerShareAttributableToCommonStockholders Net Loss Per Share Attributable To Common Stockholders Notes 18 false false R19.htm 100190 - Disclosure - Subsequent Events Sheet http://eargo.com/20221231/taxonomy/role/Role_DisclosureSubsequentEvents Subsequent Events Notes 19 false false R20.htm 100200 - Disclosure - Summary of Significant Accounting Policies (Policies) Sheet http://eargo.com/20221231/taxonomy/role/Role_DisclosureSummaryOfSignificantAccountingPoliciesPolicies Summary of Significant Accounting Policies (Policies) Policies http://eargo.com/20221231/taxonomy/role/Role_DisclosureSummaryOfSignificantAccountingPolicies 20 false false R21.htm 100220 - Disclosure - Fair Value Measurements (Tables) Sheet http://eargo.com/20221231/taxonomy/role/Role_DisclosureFairValueMeasurementsTables Fair Value Measurements (Tables) Tables http://eargo.com/20221231/taxonomy/role/Role_DisclosureFairValueMeasurements 21 false false R22.htm 100230 - Disclosure - Balance Sheet Components (Tables) Sheet http://eargo.com/20221231/taxonomy/role/Role_DisclosureBalanceSheetComponentsTables Balance Sheet Components (Tables) Tables http://eargo.com/20221231/taxonomy/role/Role_DisclosureBalanceSheetComponents 22 false false R23.htm 100240 - Disclosure - Acquisitions (Tables) Sheet http://eargo.com/20221231/taxonomy/role/DisclosureAcquisitionsTables Acquisitions (Tables) Tables http://eargo.com/20221231/taxonomy/role/DisclosureAcquisitions 23 false false R24.htm 100250 - Disclosure - Commitments and Contingencies (Tables) Sheet http://eargo.com/20221231/taxonomy/role/Role_DisclosureCommitmentsAndContingenciesTables Commitments and Contingencies (Tables) Tables http://eargo.com/20221231/taxonomy/role/Role_DisclosureCommitmentsAndContingencies 24 false false R25.htm 100260 - Disclosure - Goodwill and Intangible Assets (Tables) Sheet http://eargo.com/20221231/taxonomy/role/DisclosureGoodwillAndIntangibleAssetsTables Goodwill and Intangible Assets (Tables) Tables http://eargo.com/20221231/taxonomy/role/DisclosureGoodwillAndIntangibleAssets1 25 false false R26.htm 100270 - Disclosure - Rights Offering and debt obligations (Tables) Sheet http://eargo.com/20221231/taxonomy/role/DisclosureRightsOfferingAndDebtObligationsTables Rights Offering and debt obligations (Tables) Tables http://eargo.com/20221231/taxonomy/role/DisclosureRightsOfferingAndDebtObligations 26 false false R27.htm 100290 - Disclosure - Stock-based Compensation (Tables) Sheet http://eargo.com/20221231/taxonomy/role/Role_DisclosureStockBasedCompensationTables Stock-based Compensation (Tables) Tables http://eargo.com/20221231/taxonomy/role/Role_DisclosureStockBasedCompensation 27 false false R28.htm 100300 - Disclosure - Income Taxes (Tables) Sheet http://eargo.com/20221231/taxonomy/role/Role_DisclosureIncomeTaxesTables Income Taxes (Tables) Tables http://eargo.com/20221231/taxonomy/role/Role_DisclosureIncomeTaxes 28 false false R29.htm 100310 - Disclosure - Net Loss Per Share Attributable To Common Stockholders (Tables) Sheet http://eargo.com/20221231/taxonomy/role/Role_DisclosureNetLossPerShareAttributableToCommonStockholdersTables Net Loss Per Share Attributable To Common Stockholders (Tables) Tables http://eargo.com/20221231/taxonomy/role/Role_DisclosureNetLossPerShareAttributableToCommonStockholders 29 false false R30.htm 100320 - Disclosure - Description of Business - Additional Information (Details) Sheet http://eargo.com/20221231/taxonomy/role/Role_DisclosureDescriptionOfBusinessAdditionalInformationDetails Description of Business - Additional Information (Details) Details 30 false false R31.htm 100330 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Details) Sheet http://eargo.com/20221231/taxonomy/role/Role_DisclosureSummaryOfSignificantAccountingPoliciesAdditionalInformationDetails Summary of Significant Accounting Policies - Additional Information (Details) Details 31 false false R32.htm 100340 - Disclosure - Fair Value Measurements - Additional Information (Details) Sheet http://eargo.com/20221231/taxonomy/role/Role_DisclosureFairValueMeasurementsAdditionalInformationDetails Fair Value Measurements - Additional Information (Details) Details 32 false false R33.htm 100350 - Disclosure - Fair Value Measurements - Summary of Change in the Estimated Fair Value (Details) Sheet http://eargo.com/20221231/taxonomy/role/DisclosureFairValueMeasurementsSummaryOfChangeInTheEstimatedFairValueDetails Fair Value Measurements - Summary of Change in the Estimated Fair Value (Details) Details 33 false false R34.htm 100360 - Disclosure - Balance Sheet Components - Summary of Inventories (Details) Sheet http://eargo.com/20221231/taxonomy/role/Role_DisclosureBalanceSheetComponentsSummaryOfInventoriesDetails Balance Sheet Components - Summary of Inventories (Details) Details 34 false false R35.htm 100370 - Disclosure - Balance Sheet Components - Summary of Prepaid Expenses and Other Current Assets (Details) Sheet http://eargo.com/20221231/taxonomy/role/DisclosureBalanceSheetComponentsSummaryOfPrepaidExpensesAndOtherCurrentAssetsDetails Balance Sheet Components - Summary of Prepaid Expenses and Other Current Assets (Details) Details 35 false false R36.htm 100380 - Disclosure - Balance Sheet Components - Summary of Property And Equipment, Net (Details) Sheet http://eargo.com/20221231/taxonomy/role/Role_DisclosureBalanceSheetComponentsSummaryOfPropertyAndEquipmentNetDetails Balance Sheet Components - Summary of Property And Equipment, Net (Details) Details 36 false false R37.htm 100390 - Disclosure - Balance Sheet Components - Additional Information (Details) Sheet http://eargo.com/20221231/taxonomy/role/Role_DisclosureBalanceSheetComponentsAdditionalInformationDetails Balance Sheet Components - Additional Information (Details) Details 37 false false R38.htm 100400 - Disclosure - Balance Sheet Components - Summary of Accrued Expenses (Details) Sheet http://eargo.com/20221231/taxonomy/role/Role_DisclosureBalanceSheetComponentsSummaryOfAccruedExpensesDetails Balance Sheet Components - Summary of Accrued Expenses (Details) Details 38 false false R39.htm 100410 - Disclosure - Balance Sheet Components - Summary of Sales Returns Reserve (Details) Sheet http://eargo.com/20221231/taxonomy/role/DisclosureBalanceSheetComponentsSummaryOfSalesReturnsReserveDetails Balance Sheet Components - Summary of Sales Returns Reserve (Details) Details 39 false false R40.htm 100420 - Disclosure - Balance Sheet Components - Summary of Allowance for Credit Losses (Details) Sheet http://eargo.com/20221231/taxonomy/role/DisclosureBalanceSheetComponentsSummaryOfAllowanceForCreditLossesDetails Balance Sheet Components - Summary of Allowance for Credit Losses (Details) Details 40 false false R41.htm 100430 - Disclosure - Balance Sheet Components - Summary of Accrued Warranty Reserve (Details) Sheet http://eargo.com/20221231/taxonomy/role/Role_DisclosureBalanceSheetComponentsSummaryOfAccruedWarrantyReserveDetails Balance Sheet Components - Summary of Accrued Warranty Reserve (Details) Details 41 false false R42.htm 100440 - Disclosure - Acquisitions - Additional Information (Details) Sheet http://eargo.com/20221231/taxonomy/role/DisclosureAcquisitionsAdditionalInformationDetails Acquisitions - Additional Information (Details) Details 42 false false R43.htm 100450 - Disclosure - Acquisitions - Summary of Preliminary Purchase Price Allocation for Acquisition (Details) Sheet http://eargo.com/20221231/taxonomy/role/DisclosureAcquisitionsSummaryOfPreliminaryPurchasePriceAllocationForAcquisitionDetails Acquisitions - Summary of Preliminary Purchase Price Allocation for Acquisition (Details) Details 43 false false R44.htm 100460 - Disclosure - Commitments and Contingencies - Additional Information (Details) Sheet http://eargo.com/20221231/taxonomy/role/Role_DisclosureCommitmentsAndContingenciesAdditionalInformationDetails Commitments and Contingencies - Additional Information (Details) Details 44 false false R45.htm 100480 - Disclosure - Commitments and Contingencies - Schedule of Undiscounted Future Minimum Lease Payments Due under Non-cancelable Operating Leases (Details) Sheet http://eargo.com/20221231/taxonomy/role/Role_DisclosureCommitmentsAndContingenciesScheduleOfUndiscountedFutureMinimumLeasePaymentsDueUnderNonCancelableOperatingLeasesDetails Commitments and Contingencies - Schedule of Undiscounted Future Minimum Lease Payments Due under Non-cancelable Operating Leases (Details) Details 45 false false R46.htm 100490 - Disclosure - Goodwill and Intangible Assets - Summary of Intangible Assets, Net (Details) Sheet http://eargo.com/20221231/taxonomy/role/DisclosureGoodwillAndIntangibleAssetsSummaryOfIntangibleAssetsNetDetails Goodwill and Intangible Assets - Summary of Intangible Assets, Net (Details) Details 46 false false R47.htm 100500 - Disclosure - Goodwill and Intangible Assets - Additional Information (Details) Sheet http://eargo.com/20221231/taxonomy/role/DisclosureGoodwillAndIntangibleAssetsAdditionalInformationDetails Goodwill and Intangible Assets - Additional Information (Details) Details 47 false false R48.htm 100520 - Disclosure - Goodwill and Intangible Assets - Summary of Estimated Future Amortization Expense of Finite-lived Intangible Assets, Net (Details) Sheet http://eargo.com/20221231/taxonomy/role/DisclosureGoodwillAndIntangibleAssetsSummaryOfEstimatedFutureAmortizationExpenseOfFinitelivedIntangibleAssetsNetDetails Goodwill and Intangible Assets - Summary of Estimated Future Amortization Expense of Finite-lived Intangible Assets, Net (Details) Details 48 false false R49.htm 100530 - Disclosure - Rights Offering and debt obligations - Additional Information (Details) Sheet http://eargo.com/20221231/taxonomy/role/DisclosureRightsOfferingAndDebtObligationsAdditionalInformationDetails Rights Offering and debt obligations - Additional Information (Details) Details 49 false false R50.htm 100540 - Disclosure - Rights Offering and debt obligations - Schedule of Balance of Term Loan (Details) Sheet http://eargo.com/20221231/taxonomy/role/DisclosureRightsOfferingAndDebtObligationsScheduleOfBalanceOfTermLoanDetails Rights Offering and debt obligations - Schedule of Balance of Term Loan (Details) Details 50 false false R51.htm 100550 - Disclosure - Convertible Preferred Stock - Additional Information (Details) Sheet http://eargo.com/20221231/taxonomy/role/DisclosureConvertiblePreferredStockAdditionalInformationDetails Convertible Preferred Stock - Additional Information (Details) Details 51 false false R52.htm 100560 - Disclosure - Stock-based Compensation - Summary of Total Stock-based Compensation (Details) Sheet http://eargo.com/20221231/taxonomy/role/Role_DisclosureStockBasedCompensationSummaryOfTotalStockBasedCompensationDetails Stock-based Compensation - Summary of Total Stock-based Compensation (Details) Details 52 false false R53.htm 100570 - Disclosure - Stock-based Compensation - Additional Information (Details) Sheet http://eargo.com/20221231/taxonomy/role/Role_DisclosureStockBasedCompensationAdditionalInformationDetails Stock-based Compensation - Additional Information (Details) Details 53 false false R54.htm 100580 - Disclosure - Stock-based Compensation - Summary of Stock Option Activity (Details) Sheet http://eargo.com/20221231/taxonomy/role/DisclosureStockbasedCompensationSummaryOfStockOptionActivityDetails Stock-based Compensation - Summary of Stock Option Activity (Details) Details 54 false false R55.htm 100590 - Disclosure - Stock-based Compensation - Assumptions used in Estimating Grant-Date Fair Value of Stock-based Awards Using Black-Scholes Option Pricing Model (Details) Sheet http://eargo.com/20221231/taxonomy/role/Role_DisclosureStockBasedCompensationAssumptionsUsedInEstimatingGrantDateFairValueOfStockBasedAwardsUsingBlackScholesOptionPricingModelDetails Stock-based Compensation - Assumptions used in Estimating Grant-Date Fair Value of Stock-based Awards Using Black-Scholes Option Pricing Model (Details) Details 55 false false R56.htm 100600 - Disclosure - Stock-based compensation - Summary of RSU Activity (Details) Sheet http://eargo.com/20221231/taxonomy/role/DisclosureStockbasedCompensationSummaryOfRsuActivityDetails Stock-based compensation - Summary of RSU Activity (Details) Details 56 false false R57.htm 100610 - Disclosure - Stock-based Compensation - Assumptions Used in Estimated Fair Value of 2020 Employee Stock Purchase Plan Using Black-Scholes Option Pricing Model (Details) Sheet http://eargo.com/20221231/taxonomy/role/DisclosureStockbasedCompensationAssumptionsUsedInEstimatedFairValueOf2020EmployeeStockPurchasePlanUsingBlackscholesOptionPricingModelDetai Stock-based Compensation - Assumptions Used in Estimated Fair Value of 2020 Employee Stock Purchase Plan Using Black-Scholes Option Pricing Model (Details) Details 57 false false R58.htm 100620 - Disclosure - Income Taxes - Additional Information (Details) Sheet http://eargo.com/20221231/taxonomy/role/Role_DisclosureIncomeTaxesAdditionalInformationDetails Income Taxes - Additional Information (Details) Details 58 false false R59.htm 100630 - Disclosure - Income Taxes - Schedule of Reconciliation of Statutory Federal Income Tax to Effective Tax (Details) Sheet http://eargo.com/20221231/taxonomy/role/Role_DisclosureIncomeTaxesScheduleOfReconciliationOfStatutoryFederalIncomeTaxToEffectiveTaxDetails Income Taxes - Schedule of Reconciliation of Statutory Federal Income Tax to Effective Tax (Details) Details 59 false false R60.htm 100640 - Disclosure - Income Taxes - Schedule of Tax Effects of Temporary Differences and Carryforwards of Significant Portions of Deferred Tax Assets (Details) Sheet http://eargo.com/20221231/taxonomy/role/Role_DisclosureIncomeTaxesScheduleOfTaxEffectsOfTemporaryDifferencesAndCarryforwardsOfSignificantPortionsOfDeferredTaxAssetsDetails Income Taxes - Schedule of Tax Effects of Temporary Differences and Carryforwards of Significant Portions of Deferred Tax Assets (Details) Details 60 false false R61.htm 100650 - Disclosure - Income Taxes - Schedule of Reconciliation of Unrecognized Tax Benefits (Details) Sheet http://eargo.com/20221231/taxonomy/role/Role_DisclosureIncomeTaxesScheduleOfReconciliationOfUnrecognizedTaxBenefitsDetails Income Taxes - Schedule of Reconciliation of Unrecognized Tax Benefits (Details) Details 61 false false R62.htm 100660 - Disclosure - Net Loss Per Share Attributable To Common Stockholders - Summary of Outstanding Potentially Dilutive Common Stock Equivalents Excluded from Calculation of Diluted Net Loss Per Share (Details) Sheet http://eargo.com/20221231/taxonomy/role/DisclosureNetLossPerShareAttributableToCommonStockholdersSummaryOfOutstandingPotentiallyDilutiveCommonStockEquivalentsExcludedFromCalculati Net Loss Per Share Attributable To Common Stockholders - Summary of Outstanding Potentially Dilutive Common Stock Equivalents Excluded from Calculation of Diluted Net Loss Per Share (Details) Details 62 false false R63.htm 100670 - Disclosure - Net Loss Per Share Attributable To Common Stockholders - Computation of Basic And Diluted Net Loss Per Share Attributable to Common Stockholders (Details) Sheet http://eargo.com/20221231/taxonomy/role/Role_DisclosureNetLossPerShareAttributableToCommonStockholdersComputationOfBasicAndDilutedNetLossPerShareAttributableToCommonStockholdersDetails Net Loss Per Share Attributable To Common Stockholders - Computation of Basic And Diluted Net Loss Per Share Attributable to Common Stockholders (Details) Details 63 false false R64.htm 100680 - Disclosure - Subsequent Events - Additional Information (Details) Sheet http://eargo.com/20221231/taxonomy/role/DisclosureSubsequentEventsAdditionalInformationDetails Subsequent Events - Additional Information (Details) Details 64 false false All Reports Book All Reports [ix-0514-Hidden-Fact-Eligible-For-Transform] WARN: 1 fact(s) appearing in ix:hidden were eligible for transformation: us-gaap:FiniteLivedIntangibleAssetUsefulLife - ear-20221231.htm 8 ear-20221231.htm ear-20221231.xsd ear-20221231_cal.xml ear-20221231_def.xml ear-20221231_lab.xml ear-20221231_pre.xml ear-ex10_3a.htm ear-ex10_4.htm ear-ex10_9.htm ear-ex21_1.htm ear-ex23_1.htm ear-ex31_1.htm ear-ex31_2.htm ear-ex32_1.htm ear-ex32_2.htm ear-ex4_3.htm http://fasb.org/us-gaap/2022 http://xbrl.sec.gov/dei/2022 true true