Investments and Other Assets - Schedule of Investments and Other Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Investments, All Other Investments [Abstract]
Investment in Kyverna	$ 4,390	$ 10,000
Other investments	22,481	14,760
Restricted cash equivalents, long-term	13,605	13,605	$ 11,957
Prepaid expenses and other assets, long-term	3,788	4,518
Total investments and other assets	$ 44,264	$ 42,883