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)