3.24.1.u1 html 166 282 1 false 61 0 false 9 false false R1.htm 00090 - Document - Document and Entity Information Sheet http://www.ironwoodpharma.com/role/DocumentDocumentAndEntityInformation Document and Entity Information Cover 1 false false R2.htm 00100 - Statement - Condensed Consolidated Balance Sheets Sheet http://www.ironwoodpharma.com/role/StatementCondensedConsolidatedBalanceSheets Condensed Consolidated Balance Sheets Statements 2 false false R3.htm 00105 - Statement - Condensed Consolidated Balance Sheets (Parenthetical) Sheet http://www.ironwoodpharma.com/role/StatementCondensedConsolidatedBalanceSheetsParenthetical Condensed Consolidated Balance Sheets (Parenthetical) Statements 3 false false R4.htm 00200 - Statement - Condensed Consolidated Statements of Income (Loss) Sheet http://www.ironwoodpharma.com/role/StatementCondensedConsolidatedStatementsOfIncomeLoss Condensed Consolidated Statements of Income (Loss) Statements 4 false false R5.htm 00300 - Statement - Condensed Consolidated Statements of Comprehensive Income (Loss) Sheet http://www.ironwoodpharma.com/role/StatementCondensedConsolidatedStatementsOfComprehensiveIncomeLoss Condensed Consolidated Statements of Comprehensive Income (Loss) Statements 5 false false R6.htm 00400 - Statement - Condensed Consolidated Statements of Stockholders' Equity (Deficit) Sheet http://www.ironwoodpharma.com/role/StatementCondensedConsolidatedStatementsOfStockholdersEquityDeficit Condensed Consolidated Statements of Stockholders' Equity (Deficit) Statements 6 false false R7.htm 00500 - Statement - Condensed Consolidated Statements of Cash Flows Sheet http://www.ironwoodpharma.com/role/StatementCondensedConsolidatedStatementsOfCashFlows Condensed Consolidated Statements of Cash Flows Statements 7 false false R8.htm 00505 - Statement - Condensed Consolidated Statements of Cash Flows (Parenthetical) Sheet http://www.ironwoodpharma.com/role/StatementCondensedConsolidatedStatementsOfCashFlowsParenthetical Condensed Consolidated Statements of Cash Flows (Parenthetical) Statements 8 false false R9.htm 10101 - Disclosure - Nature of Business Sheet http://www.ironwoodpharma.com/role/DisclosureNatureOfBusiness Nature of Business Notes 9 false false R10.htm 10201 - Disclosure - Summary of Significant Accounting Policies Sheet http://www.ironwoodpharma.com/role/DisclosureSummaryOfSignificantAccountingPolicies Summary of Significant Accounting Policies Notes 10 false false R11.htm 10301 - Disclosure - Net Income (Loss) Per Share Sheet http://www.ironwoodpharma.com/role/DisclosureNetIncomeLossPerShare Net Income (Loss) Per Share Notes 11 false false R12.htm 10401 - Disclosure - Collaboration, License, and Other Agreements Sheet http://www.ironwoodpharma.com/role/DisclosureCollaborationLicenseAndOtherAgreements Collaboration, License, and Other Agreements Notes 12 false false R13.htm 10501 - Disclosure - Fair Value of Financial Instruments Sheet http://www.ironwoodpharma.com/role/DisclosureFairValueOfFinancialInstruments Fair Value of Financial Instruments Notes 13 false false R14.htm 10601 - Disclosure - Leases Sheet http://www.ironwoodpharma.com/role/DisclosureLeases Leases Notes 14 false false R15.htm 10701 - Disclosure - Accrued Expenses and Other Current Liabilities Sheet http://www.ironwoodpharma.com/role/DisclosureAccruedExpensesAndOtherCurrentLiabilities Accrued Expenses and Other Current Liabilities Notes 15 false false R16.htm 10801 - Disclosure - Debt Sheet http://www.ironwoodpharma.com/role/DisclosureDebt Debt Notes 16 false false R17.htm 10901 - Disclosure - Employee Stock Benefit Plans Sheet http://www.ironwoodpharma.com/role/DisclosureEmployeeStockBenefitPlans Employee Stock Benefit Plans Notes 17 false false R18.htm 11001 - Disclosure - Income Taxes Sheet http://www.ironwoodpharma.com/role/DisclosureIncomeTaxes Income Taxes Notes 18 false false R19.htm 11101 - Disclosure - Workforce Reduction and Restructuring Sheet http://www.ironwoodpharma.com/role/DisclosureWorkforceReductionAndRestructuring Workforce Reduction and Restructuring Notes 19 false false R20.htm 20202 - Disclosure - Summary of Significant Accounting Policies (Policies) Sheet http://www.ironwoodpharma.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies Summary of Significant Accounting Policies (Policies) Policies http://www.ironwoodpharma.com/role/DisclosureSummaryOfSignificantAccountingPolicies 20 false false R21.htm 30303 - Disclosure - Net Income (Loss) Per Share (Tables) Sheet http://www.ironwoodpharma.com/role/DisclosureNetIncomeLossPerShareTables Net Income (Loss) Per Share (Tables) Tables http://www.ironwoodpharma.com/role/DisclosureNetIncomeLossPerShare 21 false false R22.htm 30403 - Disclosure - Collaboration, License, and Other Agreements (Tables) Sheet http://www.ironwoodpharma.com/role/DisclosureCollaborationLicenseAndOtherAgreementsTables Collaboration, License, and Other Agreements (Tables) Tables http://www.ironwoodpharma.com/role/DisclosureCollaborationLicenseAndOtherAgreements 22 false false R23.htm 30503 - Disclosure - Fair Value of Financial Instruments (Tables) Sheet http://www.ironwoodpharma.com/role/DisclosureFairValueOfFinancialInstrumentsTables Fair Value of Financial Instruments (Tables) Tables http://www.ironwoodpharma.com/role/DisclosureFairValueOfFinancialInstruments 23 false false R24.htm 30603 - Disclosure - Leases (Tables) Sheet http://www.ironwoodpharma.com/role/DisclosureLeasesTables Leases (Tables) Tables http://www.ironwoodpharma.com/role/DisclosureLeases 24 false false R25.htm 30703 - Disclosure - Accrued Expenses and Other Current Liabilities (Tables) Sheet http://www.ironwoodpharma.com/role/DisclosureAccruedExpensesAndOtherCurrentLiabilitiesTables Accrued Expenses and Other Current Liabilities (Tables) Tables http://www.ironwoodpharma.com/role/DisclosureAccruedExpensesAndOtherCurrentLiabilities 25 false false R26.htm 30803 - Disclosure - Debt (Tables) Sheet http://www.ironwoodpharma.com/role/DisclosureDebtTables Debt (Tables) Tables http://www.ironwoodpharma.com/role/DisclosureDebt 26 false false R27.htm 30903 - Disclosure - Employee Stock Benefit Plans (Tables) Sheet http://www.ironwoodpharma.com/role/DisclosureEmployeeStockBenefitPlansTables Employee Stock Benefit Plans (Tables) Tables http://www.ironwoodpharma.com/role/DisclosureEmployeeStockBenefitPlans 27 false false R28.htm 40101 - Disclosure - Nature of Business (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureNatureOfBusinessDetails Nature of Business (Details) Details http://www.ironwoodpharma.com/role/DisclosureNatureOfBusiness 28 false false R29.htm 40301 - Disclosure - Net Income (Loss) Per Share - Computation (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureNetIncomeLossPerShareComputationDetails Net Income (Loss) Per Share - Computation (Details) Details http://www.ironwoodpharma.com/role/DisclosureNetIncomeLossPerShareTables 29 false false R30.htm 40302 - Disclosure - Net Income (Loss) Per Share - Potentially Dilutive Securities (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureNetIncomeLossPerSharePotentiallyDilutiveSecuritiesDetails Net Income (Loss) Per Share - Potentially Dilutive Securities (Details) Details http://www.ironwoodpharma.com/role/DisclosureNetIncomeLossPerShareTables 30 false false R31.htm 40401 - Disclosure - Collaboration, License, and Other Agreements - Summary (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureCollaborationLicenseAndOtherAgreementsSummaryDetails Collaboration, License, and Other Agreements - Summary (Details) Details http://www.ironwoodpharma.com/role/DisclosureCollaborationLicenseAndOtherAgreementsTables 31 false false R32.htm 40402 - Disclosure - Collaboration, License, and Other Agreements - Accounts Receivable (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureCollaborationLicenseAndOtherAgreementsAccountsReceivableDetails Collaboration, License, and Other Agreements - Accounts Receivable (Details) Details 32 false false R33.htm 40403 - Disclosure - Collaboration, License, and Other Agreements - North America - General Information (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureCollaborationLicenseAndOtherAgreementsNorthAmericaGeneralInformationDetails Collaboration, License, and Other Agreements - North America - General Information (Details) Details 33 false false R34.htm 40404 - Disclosure - Collaboration, License, and Other Agreements - North America - Collaborative Arrangements Revenue (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureCollaborationLicenseAndOtherAgreementsNorthAmericaCollaborativeArrangementsRevenueDetails Collaboration, License, and Other Agreements - North America - Collaborative Arrangements Revenue (Details) Details 34 false false R35.htm 40405 - Disclosure - Collaboration, License, and Other Agreements - North America - Commercial Efforts (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureCollaborationLicenseAndOtherAgreementsNorthAmericaCommercialEffortsDetails Collaboration, License, and Other Agreements - North America - Commercial Efforts (Details) Details 35 false false R36.htm 40406 - Disclosure - Collaboration, License, and Other Agreements - North America - Royalty Revenue (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureCollaborationLicenseAndOtherAgreementsNorthAmericaRoyaltyRevenueDetails Collaboration, License, and Other Agreements - North America - Royalty Revenue (Details) Details 36 false false R37.htm 40407 - Disclosure - Collaboration, License, and Other Agreements - European and Other Territories (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureCollaborationLicenseAndOtherAgreementsEuropeanAndOtherTerritoriesDetails Collaboration, License, and Other Agreements - European and Other Territories (Details) Details 37 false false R38.htm 40408 - Disclosure - Collaboration, License, and Other Agreements - Japan (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureCollaborationLicenseAndOtherAgreementsJapanDetails Collaboration, License, and Other Agreements - Japan (Details) Details http://www.ironwoodpharma.com/role/DisclosureCollaborationLicenseAndOtherAgreementsTables 38 false false R39.htm 40409 - Disclosure - Collaboration, License, and Other Agreements - China, Hong Kong and Macau (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureCollaborationLicenseAndOtherAgreementsChinaHongKongAndMacauDetails Collaboration, License, and Other Agreements - China, Hong Kong and Macau (Details) Details 39 false false R40.htm 40410 - Disclosure - Collaboration, License, and Other Agreements - Other Collaboration and License Agreements (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureCollaborationLicenseAndOtherAgreementsOtherCollaborationAndLicenseAgreementsDetails Collaboration, License, and Other Agreements - Other Collaboration and License Agreements (Details) Details 40 false false R41.htm 40501 - Disclosure - Fair Value of Financial Instruments - General Information (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureFairValueOfFinancialInstrumentsGeneralInformationDetails Fair Value of Financial Instruments - General Information (Details) Details 41 false false R42.htm 40502 - Disclosure - Fair Value of Financial Instruments - Measured on Recurring Basis (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureFairValueOfFinancialInstrumentsMeasuredOnRecurringBasisDetails Fair Value of Financial Instruments - Measured on Recurring Basis (Details) Details 42 false false R43.htm 40503 - Disclosure - Fair Value of Financial Instruments - Convertible Senior Notes (Details) Notes http://www.ironwoodpharma.com/role/DisclosureFairValueOfFinancialInstrumentsConvertibleSeniorNotesDetails Fair Value of Financial Instruments - Convertible Senior Notes (Details) Details 43 false false R44.htm 40504 - Disclosure - Fair Value of Financial Instruments - Capped Calls (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureFairValueOfFinancialInstrumentsCappedCallsDetails Fair Value of Financial Instruments - Capped Calls (Details) Details 44 false false R45.htm 40601 - Disclosure - Leases - Letters of Credit (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureLeasesLettersOfCreditDetails Leases - Letters of Credit (Details) Details 45 false false R46.htm 40602 - Disclosure - Leases - Lease Cost (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureLeasesLeaseCostDetails Leases - Lease Cost (Details) Details 46 false false R47.htm 40603 - Disclosure - Leases - Supplemental Information (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureLeasesSupplementalInformationDetails Leases - Supplemental Information (Details) Details 47 false false R48.htm 40604 - Disclosure - Leases - Summer Street Lease (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureLeasesSummerStreetLeaseDetails Leases - Summer Street Lease (Details) Details 48 false false R49.htm 40605 - Disclosure - Leases - Future Minimum Lease Payments (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureLeasesFutureMinimumLeasePaymentsDetails Leases - Future Minimum Lease Payments (Details) Details 49 false false R50.htm 40606 - Disclosure - Leases - Operating Lease Obligations (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureLeasesOperatingLeaseObligationsDetails Leases - Operating Lease Obligations (Details) Details 50 false false R51.htm 40701 - Disclosure - Accrued Expenses and Other Current Liabilities - Tabular Disclosure (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureAccruedExpensesAndOtherCurrentLiabilitiesTabularDisclosureDetails Accrued Expenses and Other Current Liabilities - Tabular Disclosure (Details) Details 51 false false R52.htm 40702 - Disclosure - Accrued Expenses and Other Current Liabilities - Additional Information (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureAccruedExpensesAndOtherCurrentLiabilitiesAdditionalInformationDetails Accrued Expenses and Other Current Liabilities - Additional Information (Details) Details 52 false false R53.htm 40801 - Disclosure - Debt - General Information (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureDebtGeneralInformationDetails Debt - General Information (Details) Details 53 false false R54.htm 40802 - Disclosure - Debt - Interest Expense (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureDebtInterestExpenseDetails Debt - Interest Expense (Details) Details 54 false false R55.htm 40803 - Disclosure - Debt - Convertible Senior Notes - Balances (Details) Notes http://www.ironwoodpharma.com/role/DisclosureDebtConvertibleSeniorNotesBalancesDetails Debt - Convertible Senior Notes - Balances (Details) Details 55 false false R56.htm 40804 - Disclosure - Debt - Convertible Senior Notes - Future Minimum Payments (Details) Notes http://www.ironwoodpharma.com/role/DisclosureDebtConvertibleSeniorNotesFutureMinimumPaymentsDetails Debt - Convertible Senior Notes - Future Minimum Payments (Details) Details 56 false false R57.htm 40805 - Disclosure - Debt - Convertible Senior Notes Due 2024 and Convertible Senior Notes Due 2026 (Details) Notes http://www.ironwoodpharma.com/role/DisclosureDebtConvertibleSeniorNotesDue2024AndConvertibleSeniorNotesDue2026Details Debt - Convertible Senior Notes Due 2024 and Convertible Senior Notes Due 2026 (Details) Details 57 false false R58.htm 40806 - Disclosure - Debt - Convertible Senior Notes Due 2022, Convertible Senior Notes Due 2024 and Convertible Senior Notes Due 2026 (Details) Notes http://www.ironwoodpharma.com/role/DisclosureDebtConvertibleSeniorNotesDue2022ConvertibleSeniorNotesDue2024AndConvertibleSeniorNotesDue2026Details Debt - Convertible Senior Notes Due 2022, Convertible Senior Notes Due 2024 and Convertible Senior Notes Due 2026 (Details) Details 58 false false R59.htm 40807 - Disclosure - Debt - Capped Calls with Respect to 2024 Convertible Notes and 2026 Convertible Notes (Details) Notes http://www.ironwoodpharma.com/role/DisclosureDebtCappedCallsWithRespectTo2024ConvertibleNotesAnd2026ConvertibleNotesDetails Debt - Capped Calls with Respect to 2024 Convertible Notes and 2026 Convertible Notes (Details) Details 59 false false R60.htm 40901 - Disclosure - Employee Stock Benefit Plans (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureEmployeeStockBenefitPlansDetails Employee Stock Benefit Plans (Details) Details http://www.ironwoodpharma.com/role/DisclosureEmployeeStockBenefitPlansTables 60 false false R61.htm 41001 - Disclosure - Income Taxes - Income Tax Expense (Benefit) (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureIncomeTaxesIncomeTaxExpenseBenefitDetails Income Taxes - Income Tax Expense (Benefit) (Details) Details 61 false false R62.htm 41101 - Disclosure - Workforce Reduction and Restructuring (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureWorkforceReductionAndRestructuringDetails Workforce Reduction and Restructuring (Details) Details http://www.ironwoodpharma.com/role/DisclosureWorkforceReductionAndRestructuring 62 false false R63.htm 995410 - Disclosure - Pay vs Performance Disclosure Sheet http://xbrl.sec.gov/ecd/role/PvpDisclosure Pay vs Performance Disclosure Uncategorized 63 false false R64.htm 995445 - Disclosure - Insider Trading Arrangements Sheet http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements Insider Trading Arrangements Cover 64 false false All Reports Book All Reports [ix-0514-Hidden-Fact-Eligible-For-Transform] WARN: 2 fact(s) appearing in ix:hidden were eligible for transformation: us-gaap:DebtInstrumentBasisSpreadOnVariableRate1, us-gaap:LongTermDebtTerm - irwd-20240331x10q.htm 9 [ix-0514-Hidden-Fact-Not-Referenced] WARN: 5 fact(s) appearing in ix:hidden were not referenced by any -sec-ix-hidden style property: us-gaap:CommitmentsAndContingencies, us-gaap:RevenueFromContractWithCustomerProductAndServiceExtensibleList - irwd-20240331x10q.htm 9 [dq-0712-Presentation-Base-Set-Order] Role '41101 - Disclosure - Workforce Reduction and Restructuring (Details)', a level 4, Detail role, appears before '995410 - Disclosure - Pay vs Performance Disclosure', a level 1, Note role. https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd 30, irwd-20240331.xsd 315 irwd-20240331.xsd irwd-20240331_cal.xml irwd-20240331_def.xml irwd-20240331_lab.xml irwd-20240331_pre.xml irwd-20240331x10q.htm http://fasb.org/us-gaap/2023 http://xbrl.sec.gov/dei/2023 http://xbrl.sec.gov/ecd/2023 true true