3.6.0.2 html 207 333 1 false 83 0 false 8 false false R1.htm 00090 - Document - Document and Entity Information Sheet http://www.t2biosystems.com.com/role/DocumentDocumentAndEntityInformation Document and Entity Information Cover 1 false false R2.htm 00100 - Statement - Consolidated Balance Sheets Sheet http://www.t2biosystems.com.com/role/StatementConsolidatedBalanceSheets Consolidated Balance Sheets Statements 2 false false R3.htm 00105 - Statement - Consolidated Balance Sheet (Parentheticals) Sheet http://www.t2biosystems.com.com/role/StatementConsolidatedBalanceSheetParentheticals Consolidated Balance Sheet (Parentheticals) Statements 3 false false R4.htm 00200 - Statement - Consolidated Statements of Operations and Comprehensive Loss Sheet http://www.t2biosystems.com.com/role/StatementConsolidatedStatementsOfOperationsAndComprehensiveLoss Consolidated Statements of Operations and Comprehensive Loss Statements 4 false false R5.htm 00300 - Statement - Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders Equity (Deficit) Sheet http://www.t2biosystems.com.com/role/StatementConsolidatedStatementsOfRedeemableConvertiblePreferredStockAndStockholdersEquityDeficit Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders Equity (Deficit) Statements 5 false false R6.htm 00305 - Statement - Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders Equity (Deficit) (Parentheticals) Sheet http://www.t2biosystems.com.com/role/StatementConsolidatedStatementsOfRedeemableConvertiblePreferredStockAndStockholdersEquityDeficitParentheticals Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders Equity (Deficit) (Parentheticals) Statements 6 false false R7.htm 00400 - Statement - Consolidated Statements of Cash Flows Sheet http://www.t2biosystems.com.com/role/StatementConsolidatedStatementsOfCashFlows Consolidated Statements of Cash Flows Statements 7 false false R8.htm 10101 - Disclosure - Nature of Business Sheet http://www.t2biosystems.com.com/role/DisclosureNatureOfBusiness Nature of Business Notes 8 false false R9.htm 10201 - Disclosure - Summary of Significant Accounting Policies Sheet http://www.t2biosystems.com.com/role/DisclosureSummaryOfSignificantAccountingPolicies Summary of Significant Accounting Policies Notes 9 false false R10.htm 10301 - Disclosure - Fair Value Measurements Sheet http://www.t2biosystems.com.com/role/DisclosureFairValueMeasurements Fair Value Measurements Notes 10 false false R11.htm 10401 - Disclosure - Restricted Cash Sheet http://www.t2biosystems.com.com/role/DisclosureRestrictedCash Restricted Cash Notes 11 false false R12.htm 10501 - Disclosure - Supplemental Balance Sheet Information Sheet http://www.t2biosystems.com.com/role/DisclosureSupplementalBalanceSheetInformation Supplemental Balance Sheet Information Notes 12 false false R13.htm 10601 - Disclosure - Notes Payable Notes http://www.t2biosystems.com.com/role/DisclosureNotesPayable Notes Payable Notes 13 false false R14.htm 10701 - Disclosure - Redeemable Convertible Preferred Stock Sheet http://www.t2biosystems.com.com/role/DisclosureRedeemableConvertiblePreferredStock Redeemable Convertible Preferred Stock Notes 14 false false R15.htm 10801 - Disclosure - Stockholders' Equity (Deficit) Sheet http://www.t2biosystems.com.com/role/DisclosureStockholdersEquityDeficit Stockholders' Equity (Deficit) Notes 15 false false R16.htm 10901 - Disclosure - Stock Based Compensation Sheet http://www.t2biosystems.com.com/role/DisclosureStockBasedCompensation Stock Based Compensation Notes 16 false false R17.htm 11001 - Disclosure - Warrants Sheet http://www.t2biosystems.com.com/role/DisclosureWarrants Warrants Notes 17 false false R18.htm 11101 - Disclosure - Net Loss Per Share Sheet http://www.t2biosystems.com.com/role/DisclosureNetLossPerShare Net Loss Per Share Notes 18 false false R19.htm 11201 - Disclosure - Income Taxes Sheet http://www.t2biosystems.com.com/role/DisclosureIncomeTaxes Income Taxes Notes 19 false false R20.htm 11301 - Disclosure - Commitments and Contingencies Sheet http://www.t2biosystems.com.com/role/DisclosureCommitmentsAndContingencies Commitments and Contingencies Notes 20 false false R21.htm 11401 - Disclosure - 401(k) Savings Plan Sheet http://www.t2biosystems.com.com/role/Disclosure401KSavingsPlan 401(k) Savings Plan Notes 21 false false R22.htm 11501 - Disclosure - Co-Development Agreements Sheet http://www.t2biosystems.com.com/role/DisclosureCoDevelopmentAgreements Co-Development Agreements Notes 22 false false R23.htm 11601 - Disclosure - Quarterly Financial Data (unaudited) Sheet http://www.t2biosystems.com.com/role/DisclosureQuarterlyFinancialDataUnaudited Quarterly Financial Data (unaudited) Notes 23 false false R24.htm 20202 - Disclosure - Summary of Significant Accounting Policies (Policies) Sheet http://www.t2biosystems.com.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies Summary of Significant Accounting Policies (Policies) Policies http://www.t2biosystems.com.com/role/DisclosureSummaryOfSignificantAccountingPolicies 24 false false R25.htm 30203 - Disclosure - Summary of Significant Accounting Policies (Tables) Sheet http://www.t2biosystems.com.com/role/DisclosureSummaryOfSignificantAccountingPoliciesTables Summary of Significant Accounting Policies (Tables) Tables http://www.t2biosystems.com.com/role/DisclosureSummaryOfSignificantAccountingPolicies 25 false false R26.htm 30303 - Disclosure - Fair Value Measurements (Tables) Sheet http://www.t2biosystems.com.com/role/DisclosureFairValueMeasurementsTables Fair Value Measurements (Tables) Tables http://www.t2biosystems.com.com/role/DisclosureFairValueMeasurements 26 false false R27.htm 30503 - Disclosure - Supplemental Balance Sheet Information (Tables) Sheet http://www.t2biosystems.com.com/role/DisclosureSupplementalBalanceSheetInformationTables Supplemental Balance Sheet Information (Tables) Tables http://www.t2biosystems.com.com/role/DisclosureSupplementalBalanceSheetInformation 27 false false R28.htm 30603 - Disclosure - Notes Payable (Tables) Notes http://www.t2biosystems.com.com/role/DisclosureNotesPayableTables Notes Payable (Tables) Tables http://www.t2biosystems.com.com/role/DisclosureNotesPayable 28 false false R29.htm 30903 - Disclosure - Share Based Compensation (Tables) Sheet http://www.t2biosystems.com.com/role/DisclosureShareBasedCompensationTables Share Based Compensation (Tables) Tables 29 false false R30.htm 31103 - Disclosure - Net Loss Per Share (Tables) Sheet http://www.t2biosystems.com.com/role/DisclosureNetLossPerShareTables Net Loss Per Share (Tables) Tables http://www.t2biosystems.com.com/role/DisclosureNetLossPerShare 30 false false R31.htm 31203 - Disclosure - Income Taxes (Tables) Sheet http://www.t2biosystems.com.com/role/DisclosureIncomeTaxesTables Income Taxes (Tables) Tables http://www.t2biosystems.com.com/role/DisclosureIncomeTaxes 31 false false R32.htm 31303 - Disclosure - Commitments and Contingencies (Tables) Sheet http://www.t2biosystems.com.com/role/DisclosureCommitmentsAndContingenciesTables Commitments and Contingencies (Tables) Tables http://www.t2biosystems.com.com/role/DisclosureCommitmentsAndContingencies 32 false false R33.htm 31603 - Disclosure - Quarterly Financial Data (unaudited) (Tables) Sheet http://www.t2biosystems.com.com/role/DisclosureQuarterlyFinancialDataUnauditedTables Quarterly Financial Data (unaudited) (Tables) Tables http://www.t2biosystems.com.com/role/DisclosureQuarterlyFinancialDataUnaudited 33 false false R34.htm 40101 - Disclosure - Nature of Business (Details) Sheet http://www.t2biosystems.com.com/role/DisclosureNatureOfBusinessDetails Nature of Business (Details) Details http://www.t2biosystems.com.com/role/DisclosureNatureOfBusiness 34 false false R35.htm 40201 - Disclosure - Summary of Significant Accounting Policies (Details) Sheet http://www.t2biosystems.com.com/role/DisclosureSummaryOfSignificantAccountingPoliciesDetails Summary of Significant Accounting Policies (Details) Details http://www.t2biosystems.com.com/role/DisclosureSummaryOfSignificantAccountingPoliciesTables 35 false false R36.htm 40202 - Disclosure - Summary of Significant Accounting Policies (Credit Risk) (Details) Sheet http://www.t2biosystems.com.com/role/DisclosureSummaryOfSignificantAccountingPoliciesCreditRiskDetails Summary of Significant Accounting Policies (Credit Risk) (Details) Details http://www.t2biosystems.com.com/role/DisclosureSummaryOfSignificantAccountingPoliciesTables 36 false false R37.htm 40203 - Disclosure - Summary of Significant Accounting Policies (Inventory) (Details) Sheet http://www.t2biosystems.com.com/role/DisclosureSummaryOfSignificantAccountingPoliciesInventoryDetails Summary of Significant Accounting Policies (Inventory) (Details) Details http://www.t2biosystems.com.com/role/DisclosureSummaryOfSignificantAccountingPoliciesTables 37 false false R38.htm 40204 - Disclosure - Summary of Significant Accounting Policies Product Service (Details) Sheet http://www.t2biosystems.com.com/role/DisclosureSummaryOfSignificantAccountingPoliciesProductServiceDetails Summary of Significant Accounting Policies Product Service (Details) Details 38 false false R39.htm 40205 - Disclosure - Summary of Significant Accounting Policies (Impairment, Stock Based Comp) (Details) Sheet http://www.t2biosystems.com.com/role/DisclosureSummaryOfSignificantAccountingPoliciesImpairmentStockBasedCompDetails Summary of Significant Accounting Policies (Impairment, Stock Based Comp) (Details) Details http://www.t2biosystems.com.com/role/DisclosureSummaryOfSignificantAccountingPoliciesTables 39 false false R40.htm 40206 - Disclosure - Summary of Significant Accounting Policies Recent Accounting Pronouncements (Details) Sheet http://www.t2biosystems.com.com/role/DisclosureSummaryOfSignificantAccountingPoliciesRecentAccountingPronouncementsDetails Summary of Significant Accounting Policies Recent Accounting Pronouncements (Details) Details 40 false false R41.htm 40301 - Disclosure - Fair Value Measurements (Details) Sheet http://www.t2biosystems.com.com/role/DisclosureFairValueMeasurementsDetails Fair Value Measurements (Details) Details http://www.t2biosystems.com.com/role/DisclosureFairValueMeasurementsTables 41 false false R42.htm 40302 - Disclosure - Fair Value Measurements (Table) (Details) Sheet http://www.t2biosystems.com.com/role/DisclosureFairValueMeasurementsTableDetails Fair Value Measurements (Table) (Details) Details http://www.t2biosystems.com.com/role/DisclosureFairValueMeasurementsTables 42 false false R43.htm 40401 - Disclosure - Restricted Cash (Details) Sheet http://www.t2biosystems.com.com/role/DisclosureRestrictedCashDetails Restricted Cash (Details) Details http://www.t2biosystems.com.com/role/DisclosureRestrictedCash 43 false false R44.htm 40501 - Disclosure - Supplemental Balance Sheet Information - Property and Equipment - (Details) Sheet http://www.t2biosystems.com.com/role/DisclosureSupplementalBalanceSheetInformationPropertyAndEquipmentDetails Supplemental Balance Sheet Information - Property and Equipment - (Details) Details 44 false false R45.htm 40502 - Disclosure - Supplemental Balance Sheet Information - Depreciation (Details) Sheet http://www.t2biosystems.com.com/role/DisclosureSupplementalBalanceSheetInformationDepreciationDetails Supplemental Balance Sheet Information - Depreciation (Details) Details 45 false false R46.htm 40503 - Disclosure - Supplemental Balance Sheet Information - Accrued Expenses (Details) Sheet http://www.t2biosystems.com.com/role/DisclosureSupplementalBalanceSheetInformationAccruedExpensesDetails Supplemental Balance Sheet Information - Accrued Expenses (Details) Details 46 false false R47.htm 40601 - Disclosure - Notes Payable - Future principal payments on notes payable (Details) Notes http://www.t2biosystems.com.com/role/DisclosureNotesPayableFuturePrincipalPaymentsOnNotesPayableDetails Notes Payable - Future principal payments on notes payable (Details) Details 47 false false R48.htm 40602 - Disclosure - Notes Payable (ASU 2015-03) (Details) Notes http://www.t2biosystems.com.com/role/DisclosureNotesPayableAsu201503Details Notes Payable (ASU 2015-03) (Details) Details http://www.t2biosystems.com.com/role/DisclosureNotesPayableTables 48 false false R49.htm 40603 - Disclosure - Notes Payable - Term Loan (Details) Notes http://www.t2biosystems.com.com/role/DisclosureNotesPayableTermLoanDetails Notes Payable - Term Loan (Details) Details 49 false false R50.htm 40604 - Disclosure - Notes Payable (Equipment Lease) (Details) Notes http://www.t2biosystems.com.com/role/DisclosureNotesPayableEquipmentLeaseDetails Notes Payable (Equipment Lease) (Details) Details http://www.t2biosystems.com.com/role/DisclosureNotesPayableTables 50 false false R51.htm 40605 - Disclosure - Notes Payable - Loan and Security Agreement (Details) Notes http://www.t2biosystems.com.com/role/DisclosureNotesPayableLoanAndSecurityAgreementDetails Notes Payable - Loan and Security Agreement (Details) Details 51 false false R52.htm 40606 - Disclosure - Notes Payable - Promissory Note (Details) Notes http://www.t2biosystems.com.com/role/DisclosureNotesPayablePromissoryNoteDetails Notes Payable - Promissory Note (Details) Details 52 false false R53.htm 40607 - Disclosure - Notes Payable (Interest Expense) (Details) Notes http://www.t2biosystems.com.com/role/DisclosureNotesPayableInterestExpenseDetails Notes Payable (Interest Expense) (Details) Details http://www.t2biosystems.com.com/role/DisclosureNotesPayableTables 53 false false R54.htm 40701 - Disclosure - Redeemable Convertible Preferred Stock (Details) Sheet http://www.t2biosystems.com.com/role/DisclosureRedeemableConvertiblePreferredStockDetails Redeemable Convertible Preferred Stock (Details) Details http://www.t2biosystems.com.com/role/DisclosureRedeemableConvertiblePreferredStock 54 false false R55.htm 40801 - Disclosure - Stockholders' Equity (Details) Sheet http://www.t2biosystems.com.com/role/DisclosureStockholdersEquityDetails Stockholders' Equity (Details) Details http://www.t2biosystems.com.com/role/DisclosureStockholdersEquityDeficit 55 false false R56.htm 40802 - Disclosure - Stockholders' Equity - Private Investment (Details) Sheet http://www.t2biosystems.com.com/role/DisclosureStockholdersEquityPrivateInvestmentDetails Stockholders' Equity - Private Investment (Details) Details 56 false false R57.htm 40901 - Disclosure - Stock Based Compensation (Stock Options) (Details) Sheet http://www.t2biosystems.com.com/role/DisclosureStockBasedCompensationStockOptionsDetails Stock Based Compensation (Stock Options) (Details) Details http://www.t2biosystems.com.com/role/DisclosureStockBasedCompensation 57 false false R58.htm 40902 - Disclosure - Stock Based Compensation (Restricted Stock) (Details) Sheet http://www.t2biosystems.com.com/role/DisclosureStockBasedCompensationRestrictedStockDetails Stock Based Compensation (Restricted Stock) (Details) Details http://www.t2biosystems.com.com/role/DisclosureStockBasedCompensation 58 false false R59.htm 40903 - Disclosure - Stock Based Compensation (Employee Stock Purchase Plan) (Details) Sheet http://www.t2biosystems.com.com/role/DisclosureStockBasedCompensationEmployeeStockPurchasePlanDetails Stock Based Compensation (Employee Stock Purchase Plan) (Details) Details http://www.t2biosystems.com.com/role/DisclosureStockBasedCompensation 59 false false R60.htm 40904 - Disclosure - Stock Based Compensation (Stock Based Compensation Expense) (Details) Sheet http://www.t2biosystems.com.com/role/DisclosureStockBasedCompensationStockBasedCompensationExpenseDetails Stock Based Compensation (Stock Based Compensation Expense) (Details) Details http://www.t2biosystems.com.com/role/DisclosureStockBasedCompensation 60 false false R61.htm 41001 - Disclosure - Warrants (Details) Sheet http://www.t2biosystems.com.com/role/DisclosureWarrantsDetails Warrants (Details) Details http://www.t2biosystems.com.com/role/DisclosureWarrants 61 false false R62.htm 41101 - Disclosure - Net Loss Per Share (Calc of Basic and Diluted) (Details) Sheet http://www.t2biosystems.com.com/role/DisclosureNetLossPerShareCalcOfBasicAndDilutedDetails Net Loss Per Share (Calc of Basic and Diluted) (Details) Details http://www.t2biosystems.com.com/role/DisclosureNetLossPerShareTables 62 false false R63.htm 41102 - Disclosure - Net Loss Per Share (Antidiluted) (Details) Sheet http://www.t2biosystems.com.com/role/DisclosureNetLossPerShareAntidilutedDetails Net Loss Per Share (Antidiluted) (Details) Details http://www.t2biosystems.com.com/role/DisclosureNetLossPerShareTables 63 false false R64.htm 41201 - Disclosure - Income Taxes (Details) Sheet http://www.t2biosystems.com.com/role/DisclosureIncomeTaxesDetails Income Taxes (Details) Details http://www.t2biosystems.com.com/role/DisclosureIncomeTaxesTables 64 false false R65.htm 41202 - Disclosure - Income Taxes (Valuation Allowance) (Details) Sheet http://www.t2biosystems.com.com/role/DisclosureIncomeTaxesValuationAllowanceDetails Income Taxes (Valuation Allowance) (Details) Details http://www.t2biosystems.com.com/role/DisclosureIncomeTaxesTables 65 false false R66.htm 41203 - Disclosure - Income Taxes (NOL and Credit) (Details) Sheet http://www.t2biosystems.com.com/role/DisclosureIncomeTaxesNolAndCreditDetails Income Taxes (NOL and Credit) (Details) Details http://www.t2biosystems.com.com/role/DisclosureIncomeTaxesTables 66 false false R67.htm 41204 - Disclosure - Income Taxes (Unrecognized) (Details) Sheet http://www.t2biosystems.com.com/role/DisclosureIncomeTaxesUnrecognizedDetails Income Taxes (Unrecognized) (Details) Details http://www.t2biosystems.com.com/role/DisclosureIncomeTaxesTables 67 false false R68.htm 41301 - Disclosure - Commitments and Contingencies (Details) Sheet http://www.t2biosystems.com.com/role/DisclosureCommitmentsAndContingenciesDetails Commitments and Contingencies (Details) Details http://www.t2biosystems.com.com/role/DisclosureCommitmentsAndContingenciesTables 68 false false R69.htm 41302 - Disclosure - Commitments and Contingencies (Future Minimum Lease Payments) (Details) Sheet http://www.t2biosystems.com.com/role/DisclosureCommitmentsAndContingenciesFutureMinimumLeasePaymentsDetails Commitments and Contingencies (Future Minimum Lease Payments) (Details) Details http://www.t2biosystems.com.com/role/DisclosureCommitmentsAndContingenciesTables 69 false false R70.htm 41303 - Disclosure - Commitments and Contingencies (License Agreement) (Details) Sheet http://www.t2biosystems.com.com/role/DisclosureCommitmentsAndContingenciesLicenseAgreementDetails Commitments and Contingencies (License Agreement) (Details) Details http://www.t2biosystems.com.com/role/DisclosureCommitmentsAndContingenciesTables 70 false false R71.htm 41401 - Disclosure - 401(k) Savings Plan (Details) Sheet http://www.t2biosystems.com.com/role/Disclosure401KSavingsPlanDetails 401(k) Savings Plan (Details) Details http://www.t2biosystems.com.com/role/Disclosure401KSavingsPlan 71 false false R72.htm 41501 - Disclosure - Co-Development Agreements (Details) Sheet http://www.t2biosystems.com.com/role/DisclosureCoDevelopmentAgreementsDetails Co-Development Agreements (Details) Details http://www.t2biosystems.com.com/role/DisclosureCoDevelopmentAgreements 72 false false R73.htm 41601 - Disclosure - Quarterly Financial Data (unaudited) (Details) Sheet http://www.t2biosystems.com.com/role/DisclosureQuarterlyFinancialDataUnauditedDetails Quarterly Financial Data (unaudited) (Details) Details http://www.t2biosystems.com.com/role/DisclosureQuarterlyFinancialDataUnauditedTables 73 false false All Reports Book All Reports ttoo-20161231.xml ttoo-20161231.xsd ttoo-20161231_cal.xml ttoo-20161231_def.xml ttoo-20161231_lab.xml ttoo-20161231_pre.xml true true