3.22.0.1 html 320 470 1 false 112 0 false 8 false false R1.htm 100000 - Document - Document and Entity Information Sheet http://achievelifesciences.com/20211231/taxonomy/role/DocumentDocumentAndEntityInformation Document and Entity Information Cover 1 false false R2.htm 100010 - Statement - Consolidated Balance Sheets Sheet http://achievelifesciences.com/20211231/taxonomy/role/StatementConsolidatedBalanceSheets Consolidated Balance Sheets Statements 2 false false R3.htm 100020 - Statement - Consolidated Balance Sheets (Parenthetical) Sheet http://achievelifesciences.com/20211231/taxonomy/role/StatementConsolidatedBalanceSheetsParenthetical Consolidated Balance Sheets (Parenthetical) Statements 3 false false R4.htm 100030 - Statement - Consolidated Statements of Loss and Comprehensive Loss Sheet http://achievelifesciences.com/20211231/taxonomy/role/StatementConsolidatedStatementsOfLossAndComprehensiveLoss Consolidated Statements of Loss and Comprehensive Loss Statements 4 false false R5.htm 100040 - Statement - Consolidated Statements of Stockholder's Equity Sheet http://achievelifesciences.com/20211231/taxonomy/role/StatementConsolidatedStatementsOfStockholderSEquity Consolidated Statements of Stockholder's Equity Statements 5 false false R6.htm 100050 - Statement - Consolidated Statements of Cash Flows Sheet http://achievelifesciences.com/20211231/taxonomy/role/StatementConsolidatedStatementsOfCashFlows Consolidated Statements of Cash Flows Statements 6 false false R7.htm 100060 - Disclosure - Nature of Business, Basis of Presentation and Liquidity Risk Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureNatureOfBusinessBasisOfPresentationAndLiquidityRisk Nature of Business, Basis of Presentation and Liquidity Risk Notes 7 false false R8.htm 100070 - Disclosure - Accounting Policies Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureAccountingPolicies Accounting Policies Notes 8 false false R9.htm 100080 - Disclosure - Financial Instruments and Risk Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureFinancialInstrumentsAndRisk Financial Instruments and Risk Notes 9 false false R10.htm 100090 - Disclosure - Government Grant Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureGovernmentGrant Government Grant Notes 10 false false R11.htm 100100 - Disclosure - Intangibles Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureIntangibles Intangibles Notes 11 false false R12.htm 100110 - Disclosure - License Agreements Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureLicenseAgreements License Agreements Notes 12 false false R13.htm 100120 - Disclosure - Fair Value Measurements Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureFairValueMeasurements Fair Value Measurements Notes 13 false false R14.htm 100130 - Disclosure - Property and Equipment Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosurePropertyAndEquipment Property and Equipment Notes 14 false false R15.htm 100140 - Disclosure - Other Assets Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureOtherAssets Other Assets Notes 15 false false R16.htm 100150 - Disclosure - Convertible Debt Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureConvertibleDebt Convertible Debt Notes 16 false false R17.htm 100160 - Disclosure - Income Tax Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureIncomeTax Income Tax Notes 17 false false R18.htm 100170 - Disclosure - Common Stock Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureCommonStock Common Stock Notes 18 false false R19.htm 100180 - Disclosure - Commitments and Contingencies Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureCommitmentsAndContingencies Commitments and Contingencies Notes 19 false false R20.htm 100190 - Disclosure - Quarterly Financial Information (Unaudited) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureQuarterlyFinancialInformationUnaudited Quarterly Financial Information (Unaudited) Notes 20 false false R21.htm 100200 - Disclosure - Accounting Policies (Policies) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureAccountingPoliciesPolicies Accounting Policies (Policies) Policies http://achievelifesciences.com/20211231/taxonomy/role/DisclosureAccountingPolicies 21 false false R22.htm 100210 - Disclosure - Accounting Policies (Tables) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureAccountingPoliciesTables Accounting Policies (Tables) Tables http://achievelifesciences.com/20211231/taxonomy/role/DisclosureAccountingPolicies 22 false false R23.htm 100220 - Disclosure - Intangibles (Tables) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureIntangiblesTables Intangibles (Tables) Tables http://achievelifesciences.com/20211231/taxonomy/role/DisclosureIntangibles 23 false false R24.htm 100230 - Disclosure - Fair Value Measurements (Tables) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureFairValueMeasurementsTables Fair Value Measurements (Tables) Tables http://achievelifesciences.com/20211231/taxonomy/role/DisclosureFairValueMeasurements 24 false false R25.htm 100240 - Disclosure - Property and Equipment (Tables) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosurePropertyAndEquipmentTables Property and Equipment (Tables) Tables http://achievelifesciences.com/20211231/taxonomy/role/DisclosurePropertyAndEquipment 25 false false R26.htm 100250 - Disclosure - Convertible Debt (Tables) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureConvertibleDebtTables Convertible Debt (Tables) Tables http://achievelifesciences.com/20211231/taxonomy/role/DisclosureConvertibleDebt 26 false false R27.htm 100260 - Disclosure - Income Tax (Tables) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureIncomeTaxTables Income Tax (Tables) Tables http://achievelifesciences.com/20211231/taxonomy/role/DisclosureIncomeTax 27 false false R28.htm 100270 - Disclosure - Common Stock (Tables) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureCommonStockTables Common Stock (Tables) Tables http://achievelifesciences.com/20211231/taxonomy/role/DisclosureCommonStock 28 false false R29.htm 100280 - Disclosure - Commitments and Contingencies (Tables) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureCommitmentsAndContingenciesTables Commitments and Contingencies (Tables) Tables http://achievelifesciences.com/20211231/taxonomy/role/DisclosureCommitmentsAndContingencies 29 false false R30.htm 100290 - Disclosure - Quarterly Financial Information (Unaudited) (Tables) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureQuarterlyFinancialInformationUnauditedTables Quarterly Financial Information (Unaudited) (Tables) Tables http://achievelifesciences.com/20211231/taxonomy/role/DisclosureQuarterlyFinancialInformationUnaudited 30 false false R31.htm 100300 - Disclosure - Nature of Business, Basis of Presentation and Liquidity Risk - Additional Information (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureNatureOfBusinessBasisOfPresentationAndLiquidityRiskAdditionalInformationDetail Nature of Business, Basis of Presentation and Liquidity Risk - Additional Information (Detail) Details 31 false false R32.htm 100310 - Disclosure - Accounting Policies - Additional Information (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureAccountingPoliciesAdditionalInformationDetail Accounting Policies - Additional Information (Detail) Details 32 false false R33.htm 100320 - Disclosure - Accounting Policies - Summary of Depreciation on Property and Equipment (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureAccountingPoliciesSummaryOfDepreciationOnPropertyAndEquipmentDetail Accounting Policies - Summary of Depreciation on Property and Equipment (Detail) Details 33 false false R34.htm 100330 - Disclosure - Financial Instruments and Risk - Additional Information (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureFinancialInstrumentsAndRiskAdditionalInformationDetail Financial Instruments and Risk - Additional Information (Detail) Details 34 false false R35.htm 100340 - Disclosure - Government Grant - Additional Information (Details) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureGovernmentGrantAdditionalInformationDetails Government Grant - Additional Information (Details) Details 35 false false R36.htm 100350 - Disclosure - Intangibles - Additional Information (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureIntangiblesAdditionalInformationDetail Intangibles - Additional Information (Detail) Details 36 false false R37.htm 100360 - Disclosure - Intangibles - Components of Intangible Assets (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureIntangiblesComponentsOfIntangibleAssetsDetail Intangibles - Components of Intangible Assets (Detail) Details 37 false false R38.htm 100370 - Disclosure - Intangibles - Estimated Future Amortization Expense Related to Intangible Assets (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureIntangiblesEstimatedFutureAmortizationExpenseRelatedToIntangibleAssetsDetail Intangibles - Estimated Future Amortization Expense Related to Intangible Assets (Detail) Details 38 false false R39.htm 100380 - Disclosure - License Agreements - Additional Information (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureLicenseAgreementsAdditionalInformationDetail License Agreements - Additional Information (Detail) Details 39 false false R40.htm 100390 - Disclosure - Fair Value Measurements - Additional Information (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureFairValueMeasurementsAdditionalInformationDetail Fair Value Measurements - Additional Information (Detail) Details 40 false false R41.htm 100400 - Disclosure - Fair Value Measurements - Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureFairValueMeasurementsSummaryOfAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetail Fair Value Measurements - Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) Details 41 false false R42.htm 100410 - Disclosure - Fair Value Measurements - Summary of Cash and Cash Equivalents (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureFairValueMeasurementsSummaryOfCashAndCashEquivalentsDetail Fair Value Measurements - Summary of Cash and Cash Equivalents (Detail) Details 42 false false R43.htm 100420 - Disclosure - Fair Value Measurements - Schedule of Aggregate Fair Value of Principal Amount of Convertible Debt (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureFairValueMeasurementsScheduleOfAggregateFairValueOfPrincipalAmountOfConvertibleDebtDetail Fair Value Measurements - Schedule of Aggregate Fair Value of Principal Amount of Convertible Debt (Detail) Details 43 false false R44.htm 100430 - Disclosure - Property and Equipment - Summary of Property and Equipment (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosurePropertyAndEquipmentSummaryOfPropertyAndEquipmentDetail Property and Equipment - Summary of Property and Equipment (Detail) Details 44 false false R45.htm 100440 - Disclosure - Convertible Debt - Additional Information (Details) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureConvertibleDebtAdditionalInformationDetails Convertible Debt - Additional Information (Details) Details 45 false false R46.htm 100450 - Disclosure - Convertible Debt - Schedule of Convertible Debt Balance (Details) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureConvertibleDebtScheduleOfConvertibleDebtBalanceDetails Convertible Debt - Schedule of Convertible Debt Balance (Details) Details 46 false false R47.htm 100460 - Disclosure - Income Tax - Additional Information (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureIncomeTaxAdditionalInformationDetail Income Tax - Additional Information (Detail) Details 47 false false R48.htm 100470 - Disclosure - Income Tax - Summary of U.S. and Foreign Components of Income (Loss) before Income Taxes (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureIncomeTaxSummaryOfUSAndForeignComponentsOfIncomeLossBeforeIncomeTaxesDetail Income Tax - Summary of U.S. and Foreign Components of Income (Loss) before Income Taxes (Detail) Details 48 false false R49.htm 100480 - Disclosure - Income Tax - Reconciliation of Income Tax Attributable to Operations (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureIncomeTaxReconciliationOfIncomeTaxAttributableToOperationsDetail Income Tax - Reconciliation of Income Tax Attributable to Operations (Detail) Details 49 false false R50.htm 100490 - Disclosure - Income Tax - Reconciliation of Income Tax Attributable to Operations (Parenthetical) (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureIncomeTaxReconciliationOfIncomeTaxAttributableToOperationsParentheticalDetail Income Tax - Reconciliation of Income Tax Attributable to Operations (Parenthetical) (Detail) Details 50 false false R51.htm 100500 - Disclosure - Income Tax - Summary of Tax Effects of Temporary Differences and Carryforwards Rise to Deferred Tax Assets and Liabilities (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureIncomeTaxSummaryOfTaxEffectsOfTemporaryDifferencesAndCarryforwardsRiseToDeferredTaxAssetsAndLiabilitiesDetail Income Tax - Summary of Tax Effects of Temporary Differences and Carryforwards Rise to Deferred Tax Assets and Liabilities (Detail) Details 51 false false R52.htm 100510 - Disclosure - Income Tax - Reconciliation of Unrecognized Tax Benefits of Uncertain Tax Positions (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureIncomeTaxReconciliationOfUnrecognizedTaxBenefitsOfUncertainTaxPositionsDetail Income Tax - Reconciliation of Unrecognized Tax Benefits of Uncertain Tax Positions (Detail) Details 52 false false R53.htm 100520 - Disclosure - Income Tax - Summary of Years Open to Examination under Different Jurisdiction (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureIncomeTaxSummaryOfYearsOpenToExaminationUnderDifferentJurisdictionDetail Income Tax - Summary of Years Open to Examination under Different Jurisdiction (Detail) Details 53 false false R54.htm 100530 - Disclosure - Common Stock - Authorized - Additional Information (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureCommonStockAuthorizedAdditionalInformationDetail Common Stock - Authorized - Additional Information (Detail) Details 54 false false R55.htm 100540 - Disclosure - Common Stock - Issued and Outstanding Shares - Additional Information (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureCommonStockIssuedAndOutstandingSharesAdditionalInformationDetail Common Stock - Issued and Outstanding Shares - Additional Information (Detail) Details 55 false false R56.htm 100550 - Disclosure - Common Stock - Stock Options - Additional Information (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureCommonStockStockOptionsAdditionalInformationDetail Common Stock - Stock Options - Additional Information (Detail) Details 56 false false R57.htm 100560 - Disclosure - Common Stock - Summary of Fair Value of Option Awards (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureCommonStockSummaryOfFairValueOfOptionAwardsDetail Common Stock - Summary of Fair Value of Option Awards (Detail) Details 57 false false R58.htm 100570 - Disclosure - Common Stock - Summary of Share-Based Compensation Expense (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureCommonStockSummaryOfShareBasedCompensationExpenseDetail Common Stock - Summary of Share-Based Compensation Expense (Detail) Details 58 false false R59.htm 100580 - Disclosure - Common Stock - Summary of Stock Options Activity (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureCommonStockSummaryOfStockOptionsActivityDetail Common Stock - Summary of Stock Options Activity (Detail) Details 59 false false R60.htm 100590 - Disclosure - Common Stock - Summary of Stock Options Outstanding Regarding Number of Common Shares Issuable upon Exercise of Outstanding Options (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureCommonStockSummaryOfStockOptionsOutstandingRegardingNumberOfCommonSharesIssuableUponExerciseOfOutstandingOptionsDetail Common Stock - Summary of Stock Options Outstanding Regarding Number of Common Shares Issuable upon Exercise of Outstanding Options (Detail) Details 60 false false R61.htm 100600 - Disclosure - Common Stock - Summary of Stock Options Outstanding Regarding Number of Common Shares Issuable upon Exercise of Vested Options (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureCommonStockSummaryOfStockOptionsOutstandingRegardingNumberOfCommonSharesIssuableUponExerciseOfVestedOptionsDetail Common Stock - Summary of Stock Options Outstanding Regarding Number of Common Shares Issuable upon Exercise of Vested Options (Detail) Details 61 false false R62.htm 100610 - Disclosure - Common Stock - Restricted Stock Unit Awards - Additional Information (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureCommonStockRestrictedStockUnitAwardsAdditionalInformationDetail Common Stock - Restricted Stock Unit Awards - Additional Information (Detail) Details 62 false false R63.htm 100620 - Disclosure - Common Stock - Summary of Restricted Stock Unit Award Activity (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureCommonStockSummaryOfRestrictedStockUnitAwardActivityDetail Common Stock - Summary of Restricted Stock Unit Award Activity (Detail) Details 63 false false R64.htm 100630 - Disclosure - Common Stock - Stock Warrants - Additional Information (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureCommonStockStockWarrantsAdditionalInformationDetail Common Stock - Stock Warrants - Additional Information (Detail) Details 64 false false R65.htm 100640 - Disclosure - Common Stock - Summary of Outstanding Warrants (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureCommonStockSummaryOfOutstandingWarrantsDetail Common Stock - Summary of Outstanding Warrants (Detail) Details 65 false false R66.htm 100650 - Disclosure - Common Stock - Computation of Basic and Diluted Net Loss Attributable to Common Shareholders Per Share (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureCommonStockComputationOfBasicAndDilutedNetLossAttributableToCommonShareholdersPerShareDetail Common Stock - Computation of Basic and Diluted Net Loss Attributable to Common Shareholders Per Share (Detail) Details 66 false false R67.htm 100660 - Disclosure - Common Stock - Loss Per Common Share - Additional Information (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureCommonStockLossPerCommonShareAdditionalInformationDetail Common Stock - Loss Per Common Share - Additional Information (Detail) Details 67 false false R68.htm 100670 - Disclosure - Commitments and Contingencies - Summary of Contractual Obligations (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureCommitmentsAndContingenciesSummaryOfContractualObligationsDetail Commitments and Contingencies - Summary of Contractual Obligations (Detail) Details 68 false false R69.htm 100680 - Disclosure - Commitments and Contingencies - Additional Information (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureCommitmentsAndContingenciesAdditionalInformationDetail Commitments and Contingencies - Additional Information (Detail) Details 69 false false R70.htm 100690 - Disclosure - Commitments and Contingencies - Summary of Future Minimum Annual Lease Payments (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureCommitmentsAndContingenciesSummaryOfFutureMinimumAnnualLeasePaymentsDetail Commitments and Contingencies - Summary of Future Minimum Annual Lease Payments (Detail) Details 70 false false R71.htm 100700 - Disclosure - Commitments and Contingencies - Summary of Other Information Related to Leases (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureCommitmentsAndContingenciesSummaryOfOtherInformationRelatedToLeasesDetail Commitments and Contingencies - Summary of Other Information Related to Leases (Detail) Details 71 false false R72.htm 100710 - Disclosure - Quarterly Financial Information (Unaudited) - Quarterly Financial Information (Detail) Sheet http://achievelifesciences.com/20211231/taxonomy/role/DisclosureQuarterlyFinancialInformationUnauditedQuarterlyFinancialInformationDetail Quarterly Financial Information (Unaudited) - Quarterly Financial Information (Detail) Details http://achievelifesciences.com/20211231/taxonomy/role/DisclosureQuarterlyFinancialInformationUnauditedTables 72 false false All Reports Book All Reports achv-10k_20211231.htm achv-20211231.xsd achv-20211231_cal.xml achv-20211231_def.xml achv-20211231_lab.xml achv-20211231_pre.xml achv-ex211_7.htm achv-ex231_11.htm achv-ex311_10.htm achv-ex321_6.htm http://fasb.org/srt/2021-01-31 http://fasb.org/us-gaap/2021-01-31 http://xbrl.sec.gov/dei/2021q4 true true