2.4.1.9 Html 148 232 1 true 53 0 false 5 false false R1.htm 00090 - Document - Document and Entity Information Sheet http://www.ironwoodpharma.com/role/DocumentDocumentAndEntityInformation Document and Entity Information true false R2.htm 00100 - Statement - Condensed Consolidated Balance Sheets Sheet http://www.ironwoodpharma.com/role/StatementCondensedConsolidatedBalanceSheets Condensed Consolidated Balance Sheets false false R3.htm 00105 - Statement - Condensed Consolidated Balance Sheets (Parenthetical) Sheet http://www.ironwoodpharma.com/role/StatementCondensedConsolidatedBalanceSheetsParenthetical Condensed Consolidated Balance Sheets (Parenthetical) false false R4.htm 00200 - Statement - Condensed Consolidated Statements of Operations Sheet http://www.ironwoodpharma.com/role/StatementCondensedConsolidatedStatementsOfOperations Condensed Consolidated Statements of Operations false false R5.htm 00300 - Statement - Condensed Consolidated Statements of Comprehensive Loss Sheet http://www.ironwoodpharma.com/role/StatementCondensedConsolidatedStatementsOfComprehensiveLoss Condensed Consolidated Statements of Comprehensive Loss false false R6.htm 00400 - Statement - Condensed Consolidated Statements of Cash Flows Sheet http://www.ironwoodpharma.com/role/StatementCondensedConsolidatedStatementsOfCashFlows Condensed Consolidated Statements of Cash Flows false false R7.htm 10101 - Disclosure - Nature of Business Sheet http://www.ironwoodpharma.com/role/DisclosureNatureOfBusiness Nature of Business false false R8.htm 10201 - Disclosure - Net Loss Per Share Sheet http://www.ironwoodpharma.com/role/DisclosureNetLossPerShare Net Loss Per Share false false R9.htm 10301 - Disclosure - Collaboration and License Agreements Sheet http://www.ironwoodpharma.com/role/DisclosureCollaborationAndLicenseAgreements Collaboration and License Agreements false false R10.htm 10401 - Disclosure - Fair Value of Financial Instruments Sheet http://www.ironwoodpharma.com/role/DisclosureFairValueOfFinancialInstruments Fair Value of Financial Instruments false false R11.htm 10501 - Disclosure - Available-for-Sale Securities Sheet http://www.ironwoodpharma.com/role/DisclosureAvailableForSaleSecurities Available-for-Sale Securities false false R12.htm 10601 - Disclosure - Inventory Sheet http://www.ironwoodpharma.com/role/DisclosureInventory Inventory false false R13.htm 10701 - Disclosure - Property and Equipment Sheet http://www.ironwoodpharma.com/role/DisclosurePropertyAndEquipment Property and Equipment false false R14.htm 10801 - Disclosure - Accrued Expenses Sheet http://www.ironwoodpharma.com/role/DisclosureAccruedExpenses Accrued Expenses false false R15.htm 10901 - Disclosure - Notes Payable Notes http://www.ironwoodpharma.com/role/DisclosureNotesPayable Notes Payable false false R16.htm 11001 - Disclosure - Employee Stock Benefit Plans Sheet http://www.ironwoodpharma.com/role/DisclosureEmployeeStockBenefitPlans Employee Stock Benefit Plans false false R17.htm 11101 - Disclosure - Related Party Transactions Sheet http://www.ironwoodpharma.com/role/DisclosureRelatedPartyTransactions Related Party Transactions false false R18.htm 11201 - Disclosure - Public Offerings Sheet http://www.ironwoodpharma.com/role/DisclosurePublicOfferings Public Offerings false false R19.htm 11301 - Disclosure - Workforce Reduction Sheet http://www.ironwoodpharma.com/role/DisclosureWorkforceReduction Workforce Reduction false false R20.htm 20102 - Disclosure - Nature of Business (Policies) Sheet http://www.ironwoodpharma.com/role/DisclosureNatureOfBusinessPolicies Nature of Business (Policies) false false R21.htm 30203 - Disclosure - Net Loss Per Share (Tables) Sheet http://www.ironwoodpharma.com/role/DisclosureNetLossPerShareTables Net Loss Per Share (Tables) false false R22.htm 30303 - Disclosure - Collaboration and License Agreements (Tables) Sheet http://www.ironwoodpharma.com/role/DisclosureCollaborationAndLicenseAgreementsTables Collaboration and License Agreements (Tables) false false R23.htm 30403 - Disclosure - Fair Value of Financial Instruments (Tables) Sheet http://www.ironwoodpharma.com/role/DisclosureFairValueOfFinancialInstrumentsTables Fair Value of Financial Instruments (Tables) false false R24.htm 30503 - Disclosure - Available-for-Sale Securities (Tables) Sheet http://www.ironwoodpharma.com/role/DisclosureAvailableForSaleSecuritiesTables Available-for-Sale Securities (Tables) false false R25.htm 30603 - Disclosure - Inventory (Tables) Sheet http://www.ironwoodpharma.com/role/DisclosureInventoryTables Inventory (Tables) false false R26.htm 30703 - Disclosure - Property and Equipment (Tables) Sheet http://www.ironwoodpharma.com/role/DisclosurePropertyAndEquipmentTables Property and Equipment (Tables) false false R27.htm 30803 - Disclosure - Accrued Expenses (Tables) Sheet http://www.ironwoodpharma.com/role/DisclosureAccruedExpensesTables Accrued Expenses (Tables) false false R28.htm 30903 - Disclosure - Notes Payable (Tables) Notes http://www.ironwoodpharma.com/role/DisclosureNotesPayableTables Notes Payable (Tables) false false R29.htm 31003 - Disclosure - Employee Stock Benefit Plans (Tables) Sheet http://www.ironwoodpharma.com/role/DisclosureEmployeeStockBenefitPlansTables Employee Stock Benefit Plans (Tables) false false R30.htm 40101 - Disclosure - Nature of Business (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureNatureOfBusinessDetails Nature of Business (Details) false false R31.htm 40201 - Disclosure - Net Loss Per Share (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureNetLossPerShareDetails Net Loss Per Share (Details) false false R32.htm 40301 - Disclosure - Collaboration and License Agreements (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureCollaborationAndLicenseAgreementsDetails Collaboration and License Agreements (Details) false false R33.htm 40302 - Disclosure - Collaboration and License Agreements (Details 2) Sheet http://www.ironwoodpharma.com/role/DisclosureCollaborationAndLicenseAgreementsDetails2 Collaboration and License Agreements (Details 2) false false R34.htm 40303 - Disclosure - Collaboration and License Agreements (Details 3) Sheet http://www.ironwoodpharma.com/role/DisclosureCollaborationAndLicenseAgreementsDetails3 Collaboration and License Agreements (Details 3) false false R35.htm 40304 - Disclosure - Collaboration and License Agreements (Details 4) Sheet http://www.ironwoodpharma.com/role/DisclosureCollaborationAndLicenseAgreementsDetails4 Collaboration and License Agreements (Details 4) false false R36.htm 40305 - Disclosure - Collaboration and License Agreements (Details 5) Sheet http://www.ironwoodpharma.com/role/DisclosureCollaborationAndLicenseAgreementsDetails5 Collaboration and License Agreements (Details 5) false false R37.htm 40401 - Disclosure - Fair Value of Financial Instruments (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureFairValueOfFinancialInstrumentsDetails Fair Value of Financial Instruments (Details) false false R38.htm 40501 - Disclosure - Available-for-Sale Securities (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureAvailableForSaleSecuritiesDetails Available-for-Sale Securities (Details) false false R39.htm 40601 - Disclosure - Inventory (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureInventoryDetails Inventory (Details) false false R40.htm 40701 - Disclosure - Property and Equipment (Details) Sheet http://www.ironwoodpharma.com/role/DisclosurePropertyAndEquipmentDetails Property and Equipment (Details) false false R41.htm 40801 - Disclosure - Accrued Expenses (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureAccruedExpensesDetails Accrued Expenses (Details) false false R42.htm 40901 - Disclosure - Notes Payable (Details) Notes http://www.ironwoodpharma.com/role/DisclosureNotesPayableDetails Notes Payable (Details) false false R43.htm 41001 - Disclosure - Employee Stock Benefit Plans (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureEmployeeStockBenefitPlansDetails Employee Stock Benefit Plans (Details) false false R44.htm 41002 - Disclosure - Employee Stock Benefit Plans (Details 2) Sheet http://www.ironwoodpharma.com/role/DisclosureEmployeeStockBenefitPlansDetails2 Employee Stock Benefit Plans (Details 2) false false R45.htm 41003 - Disclosure - Employee Stock Benefit Plans (Details 3) Sheet http://www.ironwoodpharma.com/role/DisclosureEmployeeStockBenefitPlansDetails3 Employee Stock Benefit Plans (Details 3) false false R46.htm 41101 - Disclosure - Related Party Transactions (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureRelatedPartyTransactionsDetails Related Party Transactions (Details) false false R47.htm 41201 - Disclosure - Public Offerings (Details) Sheet http://www.ironwoodpharma.com/role/DisclosurePublicOfferingsDetails Public Offerings (Details) false false R48.htm 41301 - Disclosure - Workforce Reduction (Details) Sheet http://www.ironwoodpharma.com/role/DisclosureWorkforceReductionDetails Workforce Reduction (Details) false false All Reports Book All Reports Element us-gaap_AccountsReceivableNetCurrent had a mix of decimals attribute values: -5 -3. Element us-gaap_ProceedsFromIssuanceOfCommonStock had a mix of decimals attribute values: -5 -3. Element us-gaap_ResearchAndDevelopmentExpense had a mix of decimals attribute values: -5 -3. 'Monetary' elements on report '40301 - Disclosure - Collaboration and License Agreements (Details)' had a mix of different decimal attribute values. 'Monetary' elements on report '40302 - Disclosure - Collaboration and License Agreements (Details 2)' had a mix of different decimal attribute values. 'Monetary' elements on report '40303 - Disclosure - Collaboration and License Agreements (Details 3)' had a mix of different decimal attribute values. 'Monetary' elements on report '40304 - Disclosure - Collaboration and License Agreements (Details 4)' had a mix of different decimal attribute values. 'Monetary' elements on report '40305 - Disclosure - Collaboration and License Agreements (Details 5)' had a mix of different decimal attribute values. 'Monetary' elements on report '40501 - Disclosure - Available-for-Sale Securities (Details)' had a mix of different decimal attribute values. 'Monetary' elements on report '40901 - Disclosure - Notes Payable (Details)' had a mix of different decimal attribute values. Process Flow-Through: 00100 - Statement - Condensed Consolidated Balance Sheets Process Flow-Through: Removing column 'Mar. 31, 2014' Process Flow-Through: Removing column 'Dec. 31, 2013' Process Flow-Through: 00105 - Statement - Condensed Consolidated Balance Sheets (Parenthetical) Process Flow-Through: 00200 - Statement - Condensed Consolidated Statements of Operations Process Flow-Through: 00300 - Statement - Condensed Consolidated Statements of Comprehensive Loss Process Flow-Through: 00400 - Statement - Condensed Consolidated Statements of Cash Flows irwd-20150331.xml irwd-20150331.xsd irwd-20150331_cal.xml irwd-20150331_def.xml irwd-20150331_lab.xml irwd-20150331_pre.xml true true