3.26.1 html 447 419 2 true 100 0 false 7 false false R1.htm 1001 - Document - Cover Page Sheet http://www.eloxx.com/role/CoverPage Cover Page Cover 1 false false R2.htm 1002 - Statement - CONSOLIDATED BALANCE SHEETS Sheet http://www.eloxx.com/role/ConsolidatedBalanceSheets CONSOLIDATED BALANCE SHEETS Statements 2 false false R3.htm 1003 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) Sheet http://www.eloxx.com/role/ConsolidatedBalanceSheetsParenthetical CONSOLIDATED BALANCE SHEETS (Parenthetical) Statements 3 false false R4.htm 1004 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS Sheet http://www.eloxx.com/role/ConsolidatedStatementsOfOperations CONSOLIDATED STATEMENTS OF OPERATIONS Statements 4 false false R5.htm 1005 - Statement - CONSOLIDATED STATEMENTS OF STOCKHOLDERS DEFICIT Sheet http://www.eloxx.com/role/ConsolidatedStatementsOfStockholdersDeficit CONSOLIDATED STATEMENTS OF STOCKHOLDERS DEFICIT Statements 5 false false R6.htm 1006 - Statement - CONSOLIDATED STATEMENTS OF STOCKHOLDERS DEFICIT (Parenthetical) Sheet http://www.eloxx.com/role/ConsolidatedStatementsOfStockholdersDeficitParenthetical CONSOLIDATED STATEMENTS OF STOCKHOLDERS DEFICIT (Parenthetical) Statements 6 false false R7.htm 1007 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS Sheet http://www.eloxx.com/role/ConsolidatedStatementsOfCashFlows CONSOLIDATED STATEMENTS OF CASH FLOWS Statements 7 false false R8.htm 1008 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) Sheet http://www.eloxx.com/role/ConsolidatedStatementsOfCashFlowsParenthetical CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) Statements 8 false false R9.htm 1009 - Disclosure - Nature of the Business Sheet http://www.eloxx.com/role/NatureOfTheBusiness Nature of the Business Notes 9 false false R10.htm 1010 - Disclosure - Summary of Significant Accounting Policies Sheet http://www.eloxx.com/role/SummaryOfSignificantAccountingPolicies Summary of Significant Accounting Policies Notes 10 false false R11.htm 1011 - Disclosure - Prepaid Expenses and Other Current Assets Sheet http://www.eloxx.com/role/PrepaidExpensesAndOtherCurrentAssets Prepaid Expenses and Other Current Assets Notes 11 false false R12.htm 1012 - Disclosure - Property and Equipment, net Sheet http://www.eloxx.com/role/PropertyAndEquipmentNet Property and Equipment, net Notes 12 false false R13.htm 1013 - Disclosure - Accrued Expenses Sheet http://www.eloxx.com/role/AccruedExpenses Accrued Expenses Notes 13 false false R14.htm 1014 - Disclosure - Leases Sheet http://www.eloxx.com/role/Leases Leases Notes 14 false false R15.htm 1015 - Disclosure - Debt Sheet http://www.eloxx.com/role/Debt Debt Notes 15 false false R16.htm 1016 - Disclosure - License Agreement, Advances From Collaboration Partners, Legal, and Other Contingencies Sheet http://www.eloxx.com/role/LicenseAgreementAdvancesFromCollaborationPartnersLegalAndOtherContingencies License Agreement, Advances From Collaboration Partners, Legal, and Other Contingencies Notes 16 false false R17.htm 1017 - Disclosure - Stockholders' Deficit Sheet http://www.eloxx.com/role/StockholdersDeficit Stockholders' Deficit Notes 17 false false R18.htm 1018 - Disclosure - Stock-Based Compensation Sheet http://www.eloxx.com/role/StockBasedCompensation Stock-Based Compensation Notes 18 false false R19.htm 1019 - Disclosure - Income Taxes Sheet http://www.eloxx.com/role/IncomeTaxes Income Taxes Notes 19 false false R20.htm 1020 - Disclosure - Net Loss Per Share Sheet http://www.eloxx.com/role/NetLossPerShare Net Loss Per Share Notes 20 false false R21.htm 1021 - Disclosure - Other Expense (Income), net Sheet http://www.eloxx.com/role/OtherExpenseIncomeNet Other Expense (Income), net Notes 21 false false R22.htm 1022 - Disclosure - Segment and Geographic Information Sheet http://www.eloxx.com/role/SegmentAndGeographicInformation Segment and Geographic Information Notes 22 false false R23.htm 1023 - Disclosure - Recurring Fair Value Measurements Sheet http://www.eloxx.com/role/RecurringFairValueMeasurements Recurring Fair Value Measurements Notes 23 false false R24.htm 1024 - Disclosure - Subsequent Events Sheet http://www.eloxx.com/role/SubsequentEvents Subsequent Events Notes 24 false false R25.htm 1025 - Disclosure - Summary of Significant Accounting Policies (Policies) Sheet http://www.eloxx.com/role/SummaryOfSignificantAccountingPoliciesPolicies Summary of Significant Accounting Policies (Policies) Policies http://www.eloxx.com/role/SummaryOfSignificantAccountingPolicies 25 false false R26.htm 1026 - Disclosure - Summary of Significant Accounting Policies (Tables) Sheet http://www.eloxx.com/role/SummaryOfSignificantAccountingPoliciesTables Summary of Significant Accounting Policies (Tables) Tables http://www.eloxx.com/role/SummaryOfSignificantAccountingPolicies 26 false false R27.htm 1027 - Disclosure - Prepaid Expenses and Other Current Assets (Tables) Sheet http://www.eloxx.com/role/PrepaidExpensesAndOtherCurrentAssetsTables Prepaid Expenses and Other Current Assets (Tables) Tables http://www.eloxx.com/role/PrepaidExpensesAndOtherCurrentAssets 27 false false R28.htm 1028 - Disclosure - Property and Equipment, net (Tables) Sheet http://www.eloxx.com/role/PropertyAndEquipmentNetTables Property and Equipment, net (Tables) Tables http://www.eloxx.com/role/PropertyAndEquipmentNet 28 false false R29.htm 1029 - Disclosure - Accrued Expenses (Tables) Sheet http://www.eloxx.com/role/AccruedExpensesTables Accrued Expenses (Tables) Tables http://www.eloxx.com/role/AccruedExpenses 29 false false R30.htm 1030 - Disclosure - Leases (Tables) Sheet http://www.eloxx.com/role/LeasesTables Leases (Tables) Tables http://www.eloxx.com/role/Leases 30 false false R31.htm 1031 - Disclosure - Debt (Tables) Sheet http://www.eloxx.com/role/DebtTables Debt (Tables) Tables http://www.eloxx.com/role/Debt 31 false false R32.htm 1032 - Disclosure - Stockholders' Deficit (Tables) Sheet http://www.eloxx.com/role/StockholdersDeficitTables Stockholders' Deficit (Tables) Tables http://www.eloxx.com/role/StockholdersDeficit 32 false false R33.htm 1033 - Disclosure - Stock-Based Compensation (Tables) Sheet http://www.eloxx.com/role/StockBasedCompensationTables Stock-Based Compensation (Tables) Tables http://www.eloxx.com/role/StockBasedCompensation 33 false false R34.htm 1034 - Disclosure - Income Taxes (Tables) Sheet http://www.eloxx.com/role/IncomeTaxesTables Income Taxes (Tables) Tables http://www.eloxx.com/role/IncomeTaxes 34 false false R35.htm 1035 - Disclosure - Net Loss Per Share (Tables) Sheet http://www.eloxx.com/role/NetLossPerShareTables Net Loss Per Share (Tables) Tables http://www.eloxx.com/role/NetLossPerShare 35 false false R36.htm 1036 - Disclosure - Other Expense (Income), net (Tables) Sheet http://www.eloxx.com/role/OtherExpenseIncomeNetTables Other Expense (Income), net (Tables) Tables http://www.eloxx.com/role/OtherExpenseIncomeNet 36 false false R37.htm 1037 - Disclosure - Segments and Geographic Information (Tables) Sheet http://www.eloxx.com/role/SegmentsAndGeographicInformationTables Segments and Geographic Information (Tables) Tables 37 false false R38.htm 1038 - Disclosure - Recurring Fair Value Measurements (Tables) Sheet http://www.eloxx.com/role/RecurringFairValueMeasurementsTables Recurring Fair Value Measurements (Tables) Tables http://www.eloxx.com/role/RecurringFairValueMeasurements 38 false false R39.htm 1039 - Disclosure - Nature of the Business - Additional Information (Detail) Sheet http://www.eloxx.com/role/NatureOfTheBusinessAdditionalInformationDetail Nature of the Business - Additional Information (Detail) Details 39 false false R40.htm 1040 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Detail) Sheet http://www.eloxx.com/role/SummaryOfSignificantAccountingPoliciesAdditionalInformationDetail Summary of Significant Accounting Policies - Additional Information (Detail) Details 40 false false R41.htm 1041 - Disclosure - Summary of Significant Accounting Policies - Summary of Useful Lives of Principal Classes of Assets (Detail) Sheet http://www.eloxx.com/role/SummaryOfSignificantAccountingPoliciesSummaryOfUsefulLivesOfPrincipalClassesOfAssetsDetail Summary of Significant Accounting Policies - Summary of Useful Lives of Principal Classes of Assets (Detail) Details 41 false false R42.htm 1042 - Disclosure - Prepaid Expenses and Other Current Assets - Schedule of Prepaid Expenses and Other Current Assets (Detail) Sheet http://www.eloxx.com/role/PrepaidExpensesAndOtherCurrentAssetsScheduleOfPrepaidExpensesAndOtherCurrentAssetsDetail Prepaid Expenses and Other Current Assets - Schedule of Prepaid Expenses and Other Current Assets (Detail) Details 42 false false R43.htm 1043 - Disclosure - Prepaid Expenses and Other Current Assets - Additional Information (Detail) Sheet http://www.eloxx.com/role/PrepaidExpensesAndOtherCurrentAssetsAdditionalInformationDetail Prepaid Expenses and Other Current Assets - Additional Information (Detail) Details 43 false false R44.htm 1044 - Disclosure - Property and Equipment, net - Property and Equipment, Net (Detail) Sheet http://www.eloxx.com/role/PropertyAndEquipmentNetPropertyAndEquipmentNetDetail Property and Equipment, net - Property and Equipment, Net (Detail) Details 44 false false R45.htm 1045 - Disclosure - Property and Equipment, net - Additional Information (Detail) Sheet http://www.eloxx.com/role/PropertyAndEquipmentNetAdditionalInformationDetail Property and Equipment, net - Additional Information (Detail) Details 45 false false R46.htm 1046 - Disclosure - Accrued Expenses - Accrued Expenses (Detail) Sheet http://www.eloxx.com/role/AccruedExpensesAccruedExpensesDetail Accrued Expenses - Accrued Expenses (Detail) Details 46 false false R47.htm 1047 - Disclosure - Leases - Additional Information (Detail) Sheet http://www.eloxx.com/role/LeasesAdditionalInformationDetail Leases - Additional Information (Detail) Details 47 false false R48.htm 1048 - Disclosure - Leases - Summary of Remaining Operating Lease (Details) Sheet http://www.eloxx.com/role/LeasesSummaryOfRemainingOperatingLeaseDetails Leases - Summary of Remaining Operating Lease (Details) Details 48 false false R49.htm 1049 - Disclosure - Debt - Additional Information (Detail) Sheet http://www.eloxx.com/role/DebtAdditionalInformationDetail Debt - Additional Information (Detail) Details 49 false false R50.htm 1050 - Disclosure - Debt - Schedule of Future Principal Payments for Long-Term Debt (Detail) Sheet http://www.eloxx.com/role/DebtScheduleOfFuturePrincipalPaymentsForLongTermDebtDetail Debt - Schedule of Future Principal Payments for Long-Term Debt (Detail) Details 50 false false R51.htm 1051 - Disclosure - License Agreement, Advances From Collaboration Partners, Legal, and Other Contingencies (Detail) Sheet http://www.eloxx.com/role/LicenseAgreementAdvancesFromCollaborationPartnersLegalAndOtherContingenciesDetail License Agreement, Advances From Collaboration Partners, Legal, and Other Contingencies (Detail) Details http://www.eloxx.com/role/LicenseAgreementAdvancesFromCollaborationPartnersLegalAndOtherContingencies 51 false false R52.htm 1052 - Disclosure - Stockholders' Deficit - Additional Information (Detail) Sheet http://www.eloxx.com/role/StockholdersDeficitAdditionalInformationDetail Stockholders' Deficit - Additional Information (Detail) Details 52 false false R53.htm 1053 - Disclosure - Stockholders' Deficit - Summary of Warrants Outstanding (Detail) Sheet http://www.eloxx.com/role/StockholdersDeficitSummaryOfWarrantsOutstandingDetail Stockholders' Deficit - Summary of Warrants Outstanding (Detail) Details 53 false false R54.htm 1054 - Disclosure - Stock-Based Compensation - Additional Information (Detail) Sheet http://www.eloxx.com/role/StockBasedCompensationAdditionalInformationDetail Stock-Based Compensation - Additional Information (Detail) Details 54 false false R55.htm 1055 - Disclosure - Stock-Based Compensation - Summary of Transactions Related to Grant of Stock Options to Employees and Directors (Detail) Sheet http://www.eloxx.com/role/StockBasedCompensationSummaryOfTransactionsRelatedToGrantOfStockOptionsToEmployeesAndDirectorsDetail Stock-Based Compensation - Summary of Transactions Related to Grant of Stock Options to Employees and Directors (Detail) Details 55 false false R56.htm 1056 - Disclosure - Stock-based Compensation - Summary of Assumptions Used to Estimate Fair Values of Stock Options Granted (Detail) Sheet http://www.eloxx.com/role/StockBasedCompensationSummaryOfAssumptionsUsedToEstimateFairValuesOfStockOptionsGrantedDetail Stock-based Compensation - Summary of Assumptions Used to Estimate Fair Values of Stock Options Granted (Detail) Details 56 false false R57.htm 1057 - Disclosure - Stock-based Compensation - Summary of Transactions Related to Grant of Restricted Stock Units to Employees (Detail) Sheet http://www.eloxx.com/role/StockBasedCompensationSummaryOfTransactionsRelatedToGrantOfRestrictedStockUnitsToEmployeesDetail Stock-based Compensation - Summary of Transactions Related to Grant of Restricted Stock Units to Employees (Detail) Details 57 false false R58.htm 1058 - Disclosure - Stock-based Compensation - Summary of Allocated Stock-based Compensation Expense (Detail) Sheet http://www.eloxx.com/role/StockBasedCompensationSummaryOfAllocatedStockBasedCompensationExpenseDetail Stock-based Compensation - Summary of Allocated Stock-based Compensation Expense (Detail) Details 58 false false R59.htm 1059 - Disclosure - Income Taxes - Components of Income (Loss) Before Taxes (Detail) Sheet http://www.eloxx.com/role/IncomeTaxesComponentsOfIncomeLossBeforeTaxesDetail Income Taxes - Components of Income (Loss) Before Taxes (Detail) Details 59 false false R60.htm 1060 - Disclosure - Income Taxes - Additional Information (Detail) Sheet http://www.eloxx.com/role/IncomeTaxesAdditionalInformationDetail Income Taxes - Additional Information (Detail) Details 60 false false R61.htm 1061 - Disclosure - Income Taxes - Significant Components of Deferred Tax Assets (Detail) Sheet http://www.eloxx.com/role/IncomeTaxesSignificantComponentsOfDeferredTaxAssetsDetail Income Taxes - Significant Components of Deferred Tax Assets (Detail) Details 61 false false R62.htm 1062 - Disclosure - Income Taxes - Reconciliation of Expected Tax Expense with Actual Tax Expense (Detail) Sheet http://www.eloxx.com/role/IncomeTaxesReconciliationOfExpectedTaxExpenseWithActualTaxExpenseDetail Income Taxes - Reconciliation of Expected Tax Expense with Actual Tax Expense (Detail) Details 62 false false R63.htm 1063 - Disclosure - Net Loss Per Share - Schedule of Loss and Weighted Average Number of Shares Used in Computing Basic and Diluted Net Loss Per Share (Detail) Sheet http://www.eloxx.com/role/NetLossPerShareScheduleOfLossAndWeightedAverageNumberOfSharesUsedInComputingBasicAndDilutedNetLossPerShareDetail Net Loss Per Share - Schedule of Loss and Weighted Average Number of Shares Used in Computing Basic and Diluted Net Loss Per Share (Detail) Details 63 false false R64.htm 1064 - Disclosure - Net Loss Per Share - Potentially Dilutive Securities Excluded from Computation of Diluted Weighted Average Shares Outstanding (Detail) Sheet http://www.eloxx.com/role/NetLossPerSharePotentiallyDilutiveSecuritiesExcludedFromComputationOfDilutedWeightedAverageSharesOutstandingDetail Net Loss Per Share - Potentially Dilutive Securities Excluded from Computation of Diluted Weighted Average Shares Outstanding (Detail) Details 64 false false R65.htm 1065 - Disclosure - Other Expense (Income), net - Schedule of Other Expense (Income) (Detail) Sheet http://www.eloxx.com/role/OtherExpenseIncomeNetScheduleOfOtherExpenseIncomeDetail Other Expense (Income), net - Schedule of Other Expense (Income) (Detail) Details http://www.eloxx.com/role/OtherExpenseIncomeNetTables 65 false false R66.htm 1066 - Disclosure - Segments - Schedule of CODM expense categories (Detail) Sheet http://www.eloxx.com/role/SegmentsScheduleOfCodmExpenseCategoriesDetail Segments - Schedule of CODM expense categories (Detail) Details 66 false false R67.htm 1067 - Disclosure - Recurring Fair Value Measurements (Additional Information) (Detail) Sheet http://www.eloxx.com/role/RecurringFairValueMeasurementsAdditionalInformationDetail Recurring Fair Value Measurements (Additional Information) (Detail) Details http://www.eloxx.com/role/RecurringFairValueMeasurementsTables 67 false false R68.htm 1068 - Disclosure - Fair Value Measurements - Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Detail) Sheet http://www.eloxx.com/role/FairValueMeasurementsScheduleOfAssetsAndLiabilitiesMeasuredAtFairValueOnARecurringBasisDetail Fair Value Measurements - Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Detail) Details 68 false false R69.htm 1069 - Disclosure - Fair Value Measurements - Summary of The Fair Value of The Derivative Liabilities and The Warrant Liabilities, Level 3 Fair Value Estimates (Detail) Sheet http://www.eloxx.com/role/FairValueMeasurementsSummaryOfTheFairValueOfTheDerivativeLiabilitiesAndTheWarrantLiabilitiesLevel3FairValueEstimatesDetail Fair Value Measurements - Summary of The Fair Value of The Derivative Liabilities and The Warrant Liabilities, Level 3 Fair Value Estimates (Detail) Details 69 false false R70.htm 1070 - Disclosure - Subsequent Events - Additional Information (Detail) Sheet http://www.eloxx.com/role/SubsequentEventsAdditionalInformationDetail Subsequent Events - Additional Information (Detail) Details 70 false false R71.htm 995210 - Document - Submission Sheet http://xbrl.sec.gov/ffd/role/document/submissionTable Submission Cover 71 true false R72.htm 995211 - Document - Offerings Sheet http://xbrl.sec.gov/ffd/role/document/feesOfferingTable Offerings Cover 72 false false R73.htm 995215 - Document - Fees Summary Sheet http://xbrl.sec.gov/ffd/role/document/feesSummaryTable Fees Summary Cover 73 false false All Reports Book All Reports d35071ds1a.htm eloxx-20260331.xsd d35071dexfilingfees.htm g35071g10g10.jpg http://fasb.org/us-gaap/2025 http://xbrl.sec.gov/dei/2025 http://xbrl.sec.gov/dei/2026 http://xbrl.sec.gov/ffd/2026 false false