Nature of Business - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Net loss	$ 109,279	$ 84,582	$ 425,400
Accumulated deficit	$ 1,081,708		$ 972,429