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Development Liability - Additional Information (Detail) - USD ($) |  | 1 Months Ended | 3 Months Ended | 8 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | --- | ---
May 13, 2024 | May 31, 2024 | Sep. 30, 2024 | Mar. 31, 2024 | Sep. 30, 2023 | Jan. 31, 2020 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2021
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from credit facility |  |  |  |  |  |  | $ 365,454,000 |  |
Loss on extinguishment of development liability |  |  |  |  |  |  | 1,949,000 |  |
Interest expense |  |  | $ 12,532,000 |  | $ 7,310,000 |  | 28,857,000 | $ 22,179,000 |
Sixth Financing Agreement [Member] |  |  |  |  |  |  |  |  |
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from credit facility | $ 326,500,000 | $ 326,500,000 |  |  |  |  |  |  |
SFJ Agreement [Member] |  |  |  |  |  |  |  |  |
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from SFJ agreement |  |  |  |  |  | $ 140,000,000 |  |  |
Payment made under agreement |  |  |  | $ 94,000,000 |  |  |  |  |
Loss on extinguishment of development liability |  |  |  |  |  |  | 1,900,000 |  |
Interest expense |  |  | 0 |  | $ 6,400,000 |  | 8,900,000 | $ 19,500,000 |
Development liability reacquisition price |  |  | 326,500,000 |  |  |  | 326,500,000 |  |
Development liability carrying value |  |  | $ 324,600,000 |  |  |  | $ 324,600,000 |  |
SFJ Agreement [Member] | Regulatory Approval Granted US Food and Drug Administration [Member] |  |  |  |  |  |  |  |  |
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] |  |  |  |  |  |  |  |  |
Obligated to pay initial payment |  |  |  |  |  |  |  |  | $ 460,000,000

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