XML 48 R39.htm IDEA: XBRL DOCUMENT
v3.21.2

Commitments and Contingencies - Additional Information (Detail) shares in Millions | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Aug. 31, 2020 USD ($) shares | Mar. 31, 2020 USD ($) | Aug. 31, 2018 USD ($) | Sep. 30, 2020 USD ($) | Mar. 31, 2020 USD ($) | Sep. 30, 2021 USD ($) | Sep. 30, 2020 USD ($) | Dec. 31, 2018 USD ($) | Jun. 21, 2021 Motion | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
Other Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Obligation expiration year |  |  |  |  |  | 2021 |  |  |  |  |
Gain (loss) on strategic investment |  |  |  |  |  | $ 706,000 | $ (1,262,000) |  |  |  |
Restricted cash |  |  |  | $ 5,770,000 |  | 5,770,000 | $ 5,770,000 |  |  | $ 5,770,000 | $ 4,787,000
Number Of Motions | Motion |  |  |  |  |  |  |  |  | 5 |  |
Letter of Credit | Corporate Credit Card Program |  |  |  |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Restricted cash |  |  |  |  |  | 2,000,000.0 |  |  |  |  |
Letter of Credit | Fleet Program |  |  |  |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Restricted cash |  |  |  |  |  | 400,000 |  |  |  |  |
Cersci Therapeutics |  |  |  |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Upfront consideration and transaction costs | $ 52,800,000 |  |  |  |  |  |  |  |  |  |
Upfront payment | $ 44,300,000 |  |  |  |  |  |  |  |  |  |
Upfront payment conditions | The Company incurred an aggregate of $52.8 million in upfront consideration and transaction costs, of which, $44.3 million was paid through the issuance of approximately 1.2 million shares of the Company’s common stock. |  |  |  |  |  |  |  |  |  |
Common stock issuance | shares | 1.2 |  |  |  |  |  |  |  |  |  |
Cersci Therapeutics | Research and development |  |  |  |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Assets acquisition and upfront payment |  |  |  | $ 45,700,000 |  |  |  |  |  |  |
License Agreements |  |  |  |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Upfront payment |  |  |  |  |  | $ 5,000,000.0 |  |  |  |  |
License Agreements | Neuren | North America |  |  |  |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Upfront payment |  | $ 10,000,000.0 |  |  |  |  |  |  |  |  |
Upfront license fee |  |  | $ 10,000,000.0 |  |  |  |  |  |  |  |
License Agreements | Neuren | Research and development | North America |  |  |  |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Upfront payment |  |  |  |  | $ 10,000,000.0 |  |  | $ 10,000,000.0 |  |  |
Maximum |  |  |  |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Percentage of royalty payments obligation on net product sales |  |  |  |  |  | 2.00% |  |  |  |  |
Mile stone payments payable |  |  |  |  |  | $ 2,200,000,000 |  |  |  |  |
Maximum | Cersci Therapeutics | Development Commercialization and Sales Milestones |  |  |  |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Compensation expense related to mergers to former holders | $ 887,000,000.0 |  |  |  |  |  |  |  |  |  |
Maximum | License Agreements | Neuren | North America |  |  |  |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Mile stone payments payable |  | $ 515,000,000.0 | $ 455,000,000.0 |  | $ 515,000,000.0 |  |  |  |  |  |

X
- Definition Collaborative arrangements assets acquisition and upfront payment. + References No definition available. + Details
Name: | acad_CollaborativeArrangementsAssetsAcquisitionAndUpfrontPayment
Namespace Prefix: | acad_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Collaborative arrangements non-cash upfront payment. + References No definition available. + Details
Name: | acad_CollaborativeArrangementsNonCashUpfrontPayment
Namespace Prefix: | acad_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Collaborative Arrangements Upfront consideration and transaction Payment. + References No definition available. + Details
Name: | acad_CollaborativeArrangementsUpfrontConsiderationAndTransactionPayment
Namespace Prefix: | acad_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Collaborative arrangements upfront license fee. + References No definition available. + Details
Name: | acad_CollaborativeArrangementsUpfrontLicenseFee
Namespace Prefix: | acad_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Collaborative arrangements upfront payment. + References No definition available. + Details
Name: | acad_CollaborativeArrangementsUpfrontPayment
Namespace Prefix: | acad_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Collaborative Arrangements Upfront payment description. + References No definition available. + Details
Name: | acad_CollaborativeArrangementsUpfrontPaymentDescription
Namespace Prefix: | acad_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Collaborative arrangements upfront payment shares issued. + References No definition available. + Details
Name: | acad_CollaborativeArrangementsUpfrontPaymentSharesIssued
Namespace Prefix: | acad_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Compensation expense related to mergers to former holders. + References No definition available. + Details
Name: | acad_CompensationExpenseRelatedToMergersToFormerHolders
Namespace Prefix: | acad_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number of motions for lead plantiff and lead counsel. + References No definition available. + Details
Name: | acad_NumberOfMotions
Namespace Prefix: | acad_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Obligation expiration year. + References No definition available. + Details
Name: | acad_ObligationExpirationYear
Namespace Prefix: | acad_
Data Type: | xbrli:gYearItemType
Balance Type: | na
Period Type: | duration

X
- Definition Payment of royalty percentage on net product sales. + References No definition available. + Details
Name: | acad_PaymentOfRoyaltyPercentageOnNetProductSales
Namespace Prefix: | acad_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments. + References No definition available. + Details
Name: | us-gaap_ContractualObligation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of realized and unrealized gain (loss) on investment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27405-111563 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.7(c),9(a)) -URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/recommendedDisclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 + Details
Name: | us-gaap_GainLossOnInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_OtherCommitmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of cash restricted as to withdrawal or usage, classified as noncurrent. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=124098289&loc=d3e6812-107765 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(17)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=123431023&loc=SL98516268-108586 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 954 -SubTopic 210 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=120413173&loc=SL116631458-115580 + Details
Name: | us-gaap_RestrictedCashNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_CreditFacilityAxis=us-gaap_LetterOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_OtherCommitmentsAxis=acad_CorporateCreditCardProgramMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_OtherCommitmentsAxis=acad_FleetProgramMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=acad_CersciTherapeuticsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_ResearchAndDevelopmentExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=acad_LicenseAgreementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=acad_NeurenPharmaceuticalsLimitedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=srt_NorthAmericaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=acad_DevelopmentCommercializationAndSalesMilestonesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |