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Restructuring - Additional Information (Detail) $ in Thousands |  |  |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | --- | --- | --- | ---
Aug. 21, 2023 USD ($) | Jun. 05, 2023 USD ($) | Mar. 08, 2023 USD ($) | Jan. 12, 2023 USD ($) | Jun. 30, 2023 USD ($) | Mar. 31, 2023 USD ($) | Feb. 28, 2023 USD ($) | May 31, 2022 USD ($) | Mar. 31, 2022 Employee | Nov. 30, 2021 | Jun. 30, 2022 USD ($) | Mar. 31, 2022 USD ($) | Sep. 30, 2023 USD ($) | Sep. 30, 2022 USD ($)
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percent of employees terminated |  |  |  |  |  |  |  |  |  | 35.00% |  |  |  |
Number of Employees terminated | Employee |  |  |  |  |  |  |  |  | 22 |  |  |  |  |
Remaining number of full time employees | Employee |  |  |  |  |  |  |  |  | 5 |  |  |  |  |
Proceeds from Sale of Intangible Assets |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,000 |
Gain (loss) on disposal |  |  |  |  |  |  |  |  |  |  |  |  | 4,736 | $ 57,245
Amount of dividend payment |  |  |  | $ 7,600 |  |  |  |  |  |  |  |  |  |
Contingent Value Rights Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distribution to CVR holders from asset sale proceeds | $ 1,500 | $ 3,500 |  |  |  | $ 200 | $ 200 |  |  |  |  |  |  |
Amount of dividend payment | $ 1,500 | $ 3,500 | $ 200 |  | $ 3,500 |  |  |  |  |  |  |  |  |
Vertex Pharmaceuticals Incorporated |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from Sale of Intangible Assets |  |  |  |  |  |  |  | $ 60,000 |  |  |  |  |  |
Upfront payment received |  |  |  |  |  |  |  | 55,000 |  |  |  |  |  |
Post closing indemnification obligation |  |  |  |  |  |  |  | 5,000 |  |  |  |  |  |
Gain (loss) on disposal |  |  |  |  |  |  |  | $ 57,400 |  |  |  |  |  |
Transaction costs |  |  |  |  |  |  |  |  |  |  | $ 2,600 |  |  |
GCBP Asset Purchase Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from Sale of Intangible Assets |  |  |  |  |  |  | 6,000 |  |  |  |  |  |  |
Upfront payment received |  |  |  |  |  |  | 1,000 |  |  |  |  |  |  |
Post closing indemnification obligation |  |  |  |  |  |  | 5,000 |  |  |  |  |  |  |
Gain (loss) on disposal |  |  |  |  |  |  | $ 4,700 |  |  |  |  |  |  |
Transaction costs |  |  |  |  |  |  |  |  |  |  |  |  | 800 |
Dren Bio, Inc. and Copia Scientific, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total consideration for sales agreements |  |  |  |  |  |  |  |  |  |  |  |  | $ 400 |
Gain (loss) on disposal |  |  |  |  |  |  |  |  |  |  |  |  |  | $ (200)
Operating Expense |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring costs |  |  |  |  |  |  |  |  |  |  |  | $ 1,000 |  |

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