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v3.23.3

Related Party Transactions - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2022
Related Party Transaction [Line Items] |  |  |  |  |
Accounts receivable from related parties | $ 31,694 |  | $ 31,694 |  | $ 16,299
Investment income (loss) | 677 | $ 407 | 2,023 | $ 1,293 |
Equity method investments | 4,534 |  | 4,534 |  | 5,061
Astellas [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Drug product revenue from a related party | 1,300 | 4,100 | 17,700 | 4,600 |
Due to related parties | 29,800 |  | 29,800 |  | 63,900
Astellas [Member] | Collaborative Arrangement [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Accounts receivable from related parties | 8,700 |  | 8,700 |  | 1,500
Deferred Revenue | 10,200 |  | 10,200 |  | 40,300
Astellas [Member] | License and Development [Member] | Collaborative Arrangement [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Revenues | 2,400 | 1,400 | 5,800 | 31,000 |
Falikang [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Accounts receivable from related parties | 14,200 |  | 14,200 |  | 10,500
Investment income (loss) | 700 | 400 | 2,000 | 1,300 |
Dividend received | 2,300 |  |  |  |
Equity method investments | 4,500 |  | $ 4,500 |  | $ 5,100
Percentage of outstanding shares owned |  |  | 51.10% |  |
Falikang [Member] | Collaborative Arrangement [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Revenues | $ 26,500 | $ 14,900 | $ 68,300 | $ 50,900 |

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