3.24.0.1 html 217 411 1 true 64 0 false 8 false false R1.htm 100000 - Document - Document and Entity Information Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DocumentDocumentAndEntityInformation Document and Entity Information Cover 1 false false R2.htm 100010 - Statement - Consolidated Balance Sheets Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_StatementConsolidatedBalanceSheets Consolidated Balance Sheets Statements 2 false false R3.htm 100030 - Statement - Consolidated Balance Sheets (Parenthetical) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_StatementConsolidatedBalanceSheetsParenthetical Consolidated Balance Sheets (Parenthetical) Statements 3 false false R4.htm 100040 - Statement - Consolidated Statements of Operations Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_StatementConsolidatedStatementsOfOperations Consolidated Statements of Operations Statements 4 false false R5.htm 100050 - Statement - Consolidated Statements of Comprehensive Loss Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_StatementConsolidatedStatementsOfComprehensiveLoss Consolidated Statements of Comprehensive Loss Statements 5 false false R6.htm 100060 - Statement - Consolidated Statements of Cash Flows Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_StatementConsolidatedStatementsOfCashFlows Consolidated Statements of Cash Flows Statements 6 false false R7.htm 100070 - Statement - Consolidated Statements of Stockholders' Equity Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_StatementConsolidatedStatementsOfStockholdersEquity Consolidated Statements of Stockholders' Equity Statements 7 false false R8.htm 995410 - Disclosure - Pay vs Performance Disclosure Sheet http://xbrl.sec.gov/ecd/role/PvpDisclosure Pay vs Performance Disclosure Notes 8 false false R9.htm 995445 - Disclosure - Insider Trading Arrangements Sheet http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements Insider Trading Arrangements Notes 9 false false R10.htm 995455 - Disclosure - Organization and Business Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureOrganizationAndBusiness Organization and Business Notes 10 false false R11.htm 995465 - Disclosure - Summary of Significant Accounting Policies Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureSummaryOfSignificantAccountingPolicies Summary of Significant Accounting Policies Notes 11 false false R12.htm 995475 - Disclosure - Investments Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureInvestments Investments Notes 12 false false R13.htm 995485 - Disclosure - Fair Value Measurements Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureFairValueMeasurements Fair Value Measurements Notes 13 false false R14.htm 995495 - Disclosure - Balance Sheet Details Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureBalanceSheetDetails Balance Sheet Details Notes 14 false false R15.htm 995505 - Disclosure - Stockholders' Equity Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureStockholdersEquity Stockholders' Equity Notes 15 false false R16.htm 995515 - Disclosure - 401(k) Plan Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_Disclosure401KPlan 401(k) Plan Notes 16 false false R17.htm 995525 - Disclosure - Income Taxes Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureIncomeTaxes Income Taxes Notes 17 false false R18.htm 995535 - Disclosure - Commitments and Contingencies Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureCommitmentsAndContingencies Commitments and Contingencies Notes 18 false false R19.htm 995545 - Disclosure - Leases Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureLeases Leases Notes 19 false false R20.htm 995555 - Disclosure - Selected Quarterly Financial Data (Unaudited) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureSelectedQuarterlyFinancialDataUnaudited Selected Quarterly Financial Data (Unaudited) Notes 20 false false R21.htm 995575 - Disclosure - SCHEDULE II - Valuation and Qualifying Accounts Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureSCHEDULEIIValuationAndQualifyingAccounts SCHEDULE II - Valuation and Qualifying Accounts Notes 21 false false R22.htm 995585 - Disclosure - Summary of Significant Accounting Policies (Policies) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureSummaryOfSignificantAccountingPoliciesPolicies Summary of Significant Accounting Policies (Policies) Policies http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureSummaryOfSignificantAccountingPolicies 22 false false R23.htm 995595 - Disclosure - Summary of Significant Accounting Policies (Tables) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureSummaryOfSignificantAccountingPoliciesTables Summary of Significant Accounting Policies (Tables) Tables http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureSummaryOfSignificantAccountingPolicies 23 false false R24.htm 995605 - Disclosure - Investments (Tables) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureInvestmentsTables Investments (Tables) Tables http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureInvestments 24 false false R25.htm 995615 - Disclosure - Fair Value Measurements (Tables) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureFairValueMeasurementsTables Fair Value Measurements (Tables) Tables http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureFairValueMeasurements 25 false false R26.htm 995625 - Disclosure - Balance Sheet Details (Tables) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureBalanceSheetDetailsTables Balance Sheet Details (Tables) Tables http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureBalanceSheetDetails 26 false false R27.htm 995635 - Disclosure - Stockholders' Equity (Tables) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureStockholdersEquityTables Stockholders' Equity (Tables) Tables http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureStockholdersEquity 27 false false R28.htm 995645 - Disclosure - Income Taxes (Tables) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureIncomeTaxesTables Income Taxes (Tables) Tables http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureIncomeTaxes 28 false false R29.htm 995655 - Disclosure - Leases (Tables) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureLeasesTables Leases (Tables) Tables http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureLeases 29 false false R30.htm 995665 - Disclosure - Selected Quarterly Financial Data (Unaudited) (Tables) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureSelectedQuarterlyFinancialDataUnauditedTables Selected Quarterly Financial Data (Unaudited) (Tables) Tables http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureSelectedQuarterlyFinancialDataUnaudited 30 false false R31.htm 995675 - Disclosure - Summary of Significant Accounting Policies - Schedule of Reconciliation of Cash, Cash Equivalents and Restricted Cash (Detail) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureSummaryOfSignificantAccountingPoliciesScheduleOfReconciliationOfCashCashEquivalentsAndRestrictedCashDetail Summary of Significant Accounting Policies - Schedule of Reconciliation of Cash, Cash Equivalents and Restricted Cash (Detail) Details 31 false false R32.htm 995685 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Detail) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureSummaryOfSignificantAccountingPoliciesAdditionalInformationDetail Summary of Significant Accounting Policies - Additional Information (Detail) Details 32 false false R33.htm 995695 - Disclosure - Summary of Significant Accounting Policies - Schedule of Estimated Useful Lives by Major Asset Category (Detail) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureSummaryOfSignificantAccountingPoliciesScheduleOfEstimatedUsefulLivesByMajorAssetCategoryDetail Summary of Significant Accounting Policies - Schedule of Estimated Useful Lives by Major Asset Category (Detail) Details 33 false false R34.htm 995705 - Disclosure - Summary of Significant Accounting Policies - Schedule of Revenues consist of product sales to customers (Details) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesScheduleOfRevenuesConsistOfProductSalesToCustomersDetails Summary of Significant Accounting Policies - Schedule of Revenues consist of product sales to customers (Details) Details 34 false false R35.htm 995715 - Disclosure - Summary of Significant Accounting Policies - Weighted-Average Assumptions Used to Estimate Fair Value of Employee Stock Options (Detail) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureSummaryOfSignificantAccountingPoliciesWeightedAverageAssumptionsUsedToEstimateFairValueOfEmployeeStockOptionsDetail Summary of Significant Accounting Policies - Weighted-Average Assumptions Used to Estimate Fair Value of Employee Stock Options (Detail) Details 35 false false R36.htm 995725 - Disclosure - Summary of Significant Accounting Policies - Weighted-Average Assumptions Used to Estimate Fair Value of Employee Stock Purchase Plan Rights (Detail) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureSummaryOfSignificantAccountingPoliciesWeightedAverageAssumptionsUsedToEstimateFairValueOfEmployeeStockPurchasePlanRightsDetail Summary of Significant Accounting Policies - Weighted-Average Assumptions Used to Estimate Fair Value of Employee Stock Purchase Plan Rights (Detail) Details 36 false false R37.htm 995735 - Disclosure - Summary of Significant Accounting Policies - Summary of Stock-based Compensation Expense Included in Statements of Operations (Detail) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureSummaryOfSignificantAccountingPoliciesSummaryOfStockBasedCompensationExpenseIncludedInStatementsOfOperationsDetail Summary of Significant Accounting Policies - Summary of Stock-based Compensation Expense Included in Statements of Operations (Detail) Details 37 false false R38.htm 995745 - Disclosure - Investments - Carrying Value and Amortized Cost of Company's Investments Summarized by Major Security Type (Detail) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureInvestmentsCarryingValueAndAmortizedCostOfCompanySInvestmentsSummarizedByMajorSecurityTypeDetail Investments - Carrying Value and Amortized Cost of Company's Investments Summarized by Major Security Type (Detail) Details 38 false false R39.htm 995765 - Disclosure - Investments - Additional Information (Detail) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureInvestmentsAdditionalInformationDetail Investments - Additional Information (Detail) Details 39 false false R40.htm 995775 - Disclosure - Investments - Summary of Gross Unrealized Losses and Fair Value of Available-For-Sale Investment Securities in Unrealized Loss Position (Detail) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureInvestmentsSummaryOfGrossUnrealizedLossesAndFairValueOfAvailableForSaleInvestmentSecuritiesInUnrealizedLossPositionDetail Investments - Summary of Gross Unrealized Losses and Fair Value of Available-For-Sale Investment Securities in Unrealized Loss Position (Detail) Details 40 false false R41.htm 995795 - Disclosure - Fair Value Measurements - Fair Value Measurements of Cash Equivalents, Available-For-Sale Investment Securities and Equity Securities (Detail) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureFairValueMeasurementsFairValueMeasurementsOfCashEquivalentsAvailableForSaleInvestmentSecuritiesAndEquitySecuritiesDetail Fair Value Measurements - Fair Value Measurements of Cash Equivalents, Available-For-Sale Investment Securities and Equity Securities (Detail) Details 41 false false R42.htm 995805 - Disclosure - Fair value measurement - Changes in estimated fair value of contingent cash award (Details) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/DisclosureFairValueMeasurementChangesInEstimatedFairValueOfContingentCashAwardDetails Fair value measurement - Changes in estimated fair value of contingent cash award (Details) Details 42 false false R43.htm 995815 - Disclosure - Balance Sheet Details - Schedule of Inventory (Detail) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureBalanceSheetDetailsScheduleOfInventoryDetail Balance Sheet Details - Schedule of Inventory (Detail) Details 43 false false R44.htm 995825 - Disclosure - Balance Sheet Details - Property and Equipment, Net (Detail) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureBalanceSheetDetailsPropertyAndEquipmentNetDetail Balance Sheet Details - Property and Equipment, Net (Detail) Details 44 false false R45.htm 995835 - Disclosure - Balance Sheet Details - Additional Information (Detail) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureBalanceSheetDetailsAdditionalInformationDetail Balance Sheet Details - Additional Information (Detail) Details 45 false false R46.htm 995845 - Disclosure - Balance Sheet Details - Schedule of Accrued Liabilities (Detail) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureBalanceSheetDetailsScheduleOfAccruedLiabilitiesDetail Balance Sheet Details - Schedule of Accrued Liabilities (Detail) Details 46 false false R47.htm 995855 - Disclosure - Stockholders' Equity - Additional Information (Detail) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureStockholdersEquityAdditionalInformationDetail Stockholders' Equity - Additional Information (Detail) Details 47 false false R48.htm 995865 - Disclosure - Summary of Company's Stock Option Activity (Detail) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureSummaryOfCompanySStockOptionActivityDetail Summary of Company's Stock Option Activity (Detail) Details 48 false false R49.htm 995875 - Disclosure - Summary of Company's RSU Activity (Detail) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureSummaryOfCompanySRSUActivityDetail Summary of Company's RSU Activity (Detail) Details 49 false false R50.htm 995885 - Disclosure - 401 (k) Plan - Additional Information (Detail) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_Disclosure401KPlanAdditionalInformationDetail 401 (k) Plan - Additional Information (Detail) Details http://www.acadia-pharm.com/20231231/taxonomy/role/Role_Disclosure401KPlan 50 false false R51.htm 995895 - Disclosure - Income Taxes - Summary of Domestic and Foreign Pre-tax Loss (Detail) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureIncomeTaxesSummaryOfDomesticAndForeignPreTaxLossDetail Income Taxes - Summary of Domestic and Foreign Pre-tax Loss (Detail) Details 51 false false R52.htm 995905 - Disclosure - Income Taxes - Schedule of Income Tax Provision (Details) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/DisclosureIncomeTaxesScheduleOfIncomeTaxProvisionDetails Income Taxes - Schedule of Income Tax Provision (Details) Details 52 false false R53.htm 995915 - Disclosure - Income Taxes - Additional Information (Detail) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureIncomeTaxesAdditionalInformationDetail Income Taxes - Additional Information (Detail) Details 53 false false R54.htm 995925 - Disclosure - Income Taxes - Components of Deferred Tax Assets (Detail) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureIncomeTaxesComponentsOfDeferredTaxAssetsDetail Income Taxes - Components of Deferred Tax Assets (Detail) Details 54 false false R55.htm 995935 - Disclosure - Income Taxes - Reconciliation of Income Taxes to Amount Computed by Applying Statutory Federal Income Tax Rate to Pretax Loss (Detail) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureIncomeTaxesReconciliationOfIncomeTaxesToAmountComputedByApplyingStatutoryFederalIncomeTaxRateToPretaxLossDetail Income Taxes - Reconciliation of Income Taxes to Amount Computed by Applying Statutory Federal Income Tax Rate to Pretax Loss (Detail) Details 55 false false R56.htm 995945 - Disclosure - Income Taxes - Unrecognized Tax Benefits (Detail) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureIncomeTaxesUnrecognizedTaxBenefitsDetail Income Taxes - Unrecognized Tax Benefits (Detail) Details 56 false false R57.htm 995955 - Disclosure - Commitments and Contingencies - Additional Information (Detail) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureCommitmentsAndContingenciesAdditionalInformationDetail Commitments and Contingencies - Additional Information (Detail) Details 57 false false R58.htm 995965 - Disclosure - Leases - Additional Information (Detail) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureLeasesAdditionalInformationDetail Leases - Additional Information (Detail) Details 58 false false R59.htm 995985 - Disclosure - Leases - Summary of Operating Lease Costs (Detail) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureLeasesSummaryOfOperatingLeaseCostsDetail Leases - Summary of Operating Lease Costs (Detail) Details 59 false false R60.htm 995995 - Disclosure - Leases - Supplemental Cash Flow Information Related to the Company's Leases (Detail) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureLeasesSupplementalCashFlowInformationRelatedToCompanySLeasesDetail Leases - Supplemental Cash Flow Information Related to the Company's Leases (Detail) Details 60 false false R61.htm 996005 - Disclosure - Leases - Summary of Balance Sheet Classification of Lease Liabilities (Detail) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureLeasesSummaryOfBalanceSheetClassificationOfLeaseLiabilitiesDetail Leases - Summary of Balance Sheet Classification of Lease Liabilities (Detail) Details 61 false false R62.htm 996015 - Disclosure - Leases - Summary of Maturities of Lease Liabilities (Detail) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureLeasesSummaryOfMaturitiesOfLeaseLiabilitiesDetail Leases - Summary of Maturities of Lease Liabilities (Detail) Details 62 false false R63.htm 996025 - Disclosure - Selected Quarterly Financial Data (Unaudited) - Selected Quarterly Financial Data (Detail) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureSelectedQuarterlyFinancialDataUnauditedSelectedQuarterlyFinancialDataDetail Selected Quarterly Financial Data (Unaudited) - Selected Quarterly Financial Data (Detail) Details http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureSelectedQuarterlyFinancialDataUnauditedTables 63 false false R64.htm 996045 - Disclosure - SCHEDULE II - Valuation and Qualifying Accounts (Detail) Sheet http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureSCHEDULEIIValuationAndQualifyingAccountsDetail SCHEDULE II - Valuation and Qualifying Accounts (Detail) Details http://www.acadia-pharm.com/20231231/taxonomy/role/Role_DisclosureSCHEDULEIIValuationAndQualifyingAccounts 64 false false All Reports Book All Reports acad-20231231.htm acad-20231231.xsd img236306118_0.jpg img236306118_1.jpg http://fasb.org/srt/2023 http://fasb.org/us-gaap/2023 http://xbrl.sec.gov/dei/2023 http://xbrl.sec.gov/ecd/2023 false false