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Related Party Transactions - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2023 | Mar. 31, 2022 | Dec. 31, 2022
Related Party Transaction [Line Items] |  |  |
Accounts receivable from related parties | $ 11,563 |  | $ 12,088
Accrued liabilities to related party | 19,594 |  | 63,886
Investment income (loss) | 796 | $ 320 |
Equity method investments | 5,884 |  | 5,061
Astellas [Member] |  |  |
Related Party Transaction [Line Items] |  |  |
Drug product revenue from a related party | 2,100 | 7,600 |
Due to related parties | 78,700 |  | 63,900
Astellas [Member] | Collaborative Arrangement [Member] |  |  |
Related Party Transaction [Line Items] |  |  |
Accounts receivable from related parties | 1,600 |  | 1,500
Deferred Revenue | 23,400 |  | 40,300
Astellas [Member] | License and Development [Member] | Collaborative Arrangement [Member] |  |  |
Related Party Transaction [Line Items] |  |  |
Revenue related to collaboration agreements | 1,600 | 27,800 |
Falikang [Member] |  |  |
Related Party Transaction [Line Items] |  |  |
Accounts receivable from related parties | 9,900 |  | 10,500
Investment income (loss) | 800 | 300 |
Equity method investments | $ 5,900 |  | $ 5,100
Percentage of outstanding shares owned | 51.10% |  |
Falikang [Member] | Collaborative Arrangement [Member] |  |  |
Related Party Transaction [Line Items] |  |  |
Revenue related to collaboration agreements | $ 21,400 | $ 16,200 |

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