XML 51 R40.htm IDEA: XBRL DOCUMENT
v3.24.1.u1

Fair Value Measurements - Schedule of Changes in Estimated Fair Value of Contingent Cash Awards (Details) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2024 USD ($)
Fair Value Disclosures [Abstract] |
Balance as of December 31, 2023 | $ 4,506
Vesting of Awards | (142)
Expense forfeited | (117)
Change in fair value | (4,047)
Balance as of March 31, 2024 | $ 200

X
- Definition Fair value measurement with unobservable inputs reconciliations recurring basis liability expense forfeited. + References No definition available. + Details
Name: | acad_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityExpenseForfeited
Namespace Prefix: | acad_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Vesting of Awards + References No definition available. + Details
Name: | acad_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityVestingOfAwards
Namespace Prefix: | acad_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_FairValueDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of increase (decrease) of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -SubTopic 10 -Topic 820 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPeriodIncreaseDecrease
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -SubTopic 10 -Topic 820 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant