Segment Information - Schedule Of Segment Reporting (Parenthetical) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Segment Reporting Information [Line Items]
Stock-based compensation	$ 21,840	$ 34,176
Depreciation and amortization	2,498	2,512
Research and Development [Member]
Segment Reporting Information [Line Items]
Unallocated stock-based compensation expense	12,600	20,100
Stock-based compensation	12,626	20,161
General and Administrative Expenses [Member]
Segment Reporting Information [Line Items]
Stock-based compensation	$ 9,214	$ 14,015