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Long-Term Investments (Details) - USD ($) $ / shares in Units, $ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jul. 31, 2021 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Equity And Cost Method Investments |  |  |  |
Gains (losses) on equity investments with readily determinable fair value |  | $ 2,789 | $ (8,952) | $ (14,617)
MacroGenics |  |  |  |
Equity And Cost Method Investments |  |  |  |
Issuance of common stock (in shares) | 958,467 |  |  |
Issue price per share (in dollars per share) | $ 31.30 |  |  |
Level 1 |  |  |  |
Equity And Cost Method Investments |  |  |  |
Equity investments with readily determinable fair value |  | 9,200 | 6,400 |
MacroGenics |  |  |  |
Equity And Cost Method Investments |  |  |  |
Capital contribution commitment | $ 30,000 |  |  |
Gains (losses) on equity investments with readily determinable fair value |  | $ 2,800 | $ (9,000) | $ (14,600)

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