Investments and Other Assets - Schedule of Investments and Other Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Investments, All Other Investments [Abstract]
Investment in Kyverna	$ 2,265	$ 4,390
Prepaid rent Tech Square Lease, long-term	26,804	0
Other investments	22,481	22,481
Restricted cash equivalents, long-term	13,776	13,605
Prepaid expenses and other assets, long-term	2,990	3,788
Total investments and other assets	$ 68,316	$ 44,264