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Commitments and Contingencies - Collaboration Agreements (Details) $ in Millions |  | 1 Months Ended | 3 Months Ended | 9 Months Ended | 10 Months Ended
--- | --- | --- | --- | --- | ---
Aug. 03, 2020 USD ($) Option | Aug. 31, 2021 | Apr. 30, 2020 USD ($) | Jun. 30, 2019 | Sep. 30, 2023 USD ($) | Sep. 30, 2023 USD ($) | May 01, 2024 USD ($)
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |
Development milestone payment |  |  |  |  | $ 0.0 | $ 0.0 |
Catalent Maryland, Inc. (Catalent) |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |
Annual fee payable, term |  |  |  | 5 years |  |  |
Period for which annual fee is payable |  |  | 5 years |  |  |  |
Term of manufacturing and supply agreement |  |  | 5 years |  |  |  |
Minimum amount agreed to purchase in batches of drug product |  |  | $ 10.6 |  |  |  |
Accrued payments on collaboration |  |  |  |  | 4.0 | 4.0 |
Prepaid assets related to upfront payments |  |  |  |  | 5.3 | 5.3 |
Payments made |  |  |  |  |  | 2.0 |
Catalent Maryland, Inc. (Catalent) | General and administrative |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |
Expenses on elimination of prepaid asset |  |  |  |  |  | 5.3 |
Expense on write off |  |  |  |  |  | 11.3 |
Expense on write off of aggregate payments |  |  |  |  |  | 6.0 |
Catalent Maryland, Inc. (Catalent) | Subsequent Events |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |
Aggregate payments on collaboration |  |  |  |  |  |  | $ 6.0
Amended and restated agreement with Penn |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |
Annual fee payable | $ 5.0 |  |  |  |  |  |
Quarterly fee payable | $ 1.3 |  |  |  |  |  |
Number of CNS indications | Option | 8 |  |  |  |  |  |
Upfront payments | $ 1.0 |  |  |  |  |  |
Upfront fee payable upon clinical candidate designation | 0.5 |  |  |  |  |  |
Upfront fee due | $ 0.5 |  |  |  |  |  |
Payment made on option exercise |  |  |  |  | 1.5 | 3.0 |
Amount payable per product candidate arising from the exploratory program for large CNS indications |  |  |  |  | 39.0 | 39.0 |
Sales milestone payments |  |  |  |  | 55.0 | 55.0 |
Amended and restated agreement with Penn | Minimum |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |
Collaboration agreement, tiered transaction fee percent |  | 1.00% |  |  |  |  |
Amended and restated agreement with Penn | Maximum |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |
Collaboration agreement, tiered transaction fee percent |  | 2.00% |  |  |  |  |
Amount payable per product candidate for rare, monogenic disorders |  |  |  |  | $ 16.5 | $ 16.5 |

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- Definition Amount accrued for payments related to collaboration agreement + References No definition available. + Details
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- Definition The amount of aggregate payments required to be made under collaboration agreement. + References No definition available. + Details
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- Definition The cash outflow from payments made on collaboration agreements. + References No definition available. + Details
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- Definition The amount of payable per product candidate for large CNS indications upon achievement of specific development milestone payment on collaboration and license agreement. + References No definition available. + Details
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- Definition The amount of payable per product candidate for rare monogenic disorders upon achievement of specific development milestone payment on collaboration and license agreement. + References No definition available. + Details
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- Definition Represents the amount of annual fee payable during the period under the collaboration agreement. + References No definition available. + Details
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- Definition Represents the term of annual fee payable during the period under the collaboration agreement. + References No definition available. + Details
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- Definition The amount of expense recognized on write off of payments made under collaboration agreement. + References No definition available. + Details
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- Definition The amount of expense recognized on write off of aggregate payments made under collaboration agreement. + References No definition available. + Details
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- Definition The amount of expense recognized on write off of upfront payments made + References No definition available. + Details
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- Definition The amount paid on option exercise under the collaboration agreement. + References No definition available. + Details
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- Definition The period for which the annual fee is payable for the use of clean room suite under the collaboration agreement. + References No definition available. + Details
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- Definition Collaboration Agreement Quarterly Fee Payable + References No definition available. + Details
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- Definition The amount of payable on sales milestone payment on collaboration and license agreement. + References No definition available. + Details
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- Definition Percentage of tired transaction fee payable under the collaboration agreement. + References No definition available. + Details
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- Definition The amount of upfront fee due. + References No definition available. + Details
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X
- Definition The amount of upfront fee payable upon clinical candidate designation under the collaboration agreement if the company were to exercise the options. + References No definition available. + Details
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- Definition The amount of upfront payment made during the period under the collaboration agreement. + References No definition available. + Details
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- Definition The amount of upfront payments made under collaboration agreements. + References No definition available. + Details
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- Definition The amount of payable on development milestone payment on collaboration and license agreement. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents the number of remaining options available to the Company to commence additional licensed programs for rare, monogenic CNS indications. + References No definition available. + Details
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- Definition Represents the term of manufacturing and supply agreement. + References No definition available. + Details
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- 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
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- Details
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