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Variable Interest Entities - Equity Method Investment - Unconsolidated VIE - Summary of Equity Method Investment (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Acquisition And Variable Interest Entity [Line Items] |  |  |  |
Beginning balance |  |  | $ 5,290 |
Share of Net Income | $ 1,177 | $ 550 | 1,766 | $ 1,346
Ending balance | $ 6,912 |  | $ 6,912 |
Beijing Falikang Pharmaceutical Co. Ltd [Member] |  |  |  |
Acquisition And Variable Interest Entity [Line Items] |  |  |  |
Ownership Percentage | 51.10% |  | 51.10% |
Beginning balance |  |  | $ 5,290 |
Share of Net Income |  |  | 1,766 |
Dividend Received |  |  | (144) |
Ending balance | $ 6,912 |  | $ 6,912 |

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