CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common stock [Member] Common Class A [Member]	Common stock [Member] Common Class B [Member]	Additional paid-in capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated deficit [Member]
Beginning Balance , Shares at Dec. 31, 2024		65,909,564	5,435,254
Beginning Balance at Dec. 31, 2024	$ 1,069,792	$ 7	$ 1	$ 1,616,895	$ (59)	$ (547,052)
Issuance of common stock upon exercise of stock options and restricted stock unit vesting , Shares		415,489
Issuance of common stock upon exercise of stock options and restricted stock unit vesting	4,554			4,554
Unrealized gains (losses) on marketable securities	913				913
Stock-based compensation expense	20,380			20,380
Net loss	(84,582)					(84,582)
Ending Balance , Shares at Mar. 31, 2025		66,325,053	5,435,254
Ending Balance at Mar. 31, 2025	1,011,057	$ 7	$ 1	1,641,829	854	(631,634)
Beginning Balance , Shares at Dec. 31, 2024		65,909,564	5,435,254
Beginning Balance at Dec. 31, 2024	1,069,792	$ 7	$ 1	1,616,895	(59)	(547,052)
Net loss	(425,400)
Ending Balance , Shares at Dec. 31, 2025		72,804,111	5,435,254
Ending Balance at Dec. 31, 2025	1,248,339	$ 7	$ 1	2,218,407	2,353	(972,429)
Issuance of common stock upon exercise of stock options and restricted stock unit vesting , Shares		643,353
Issuance of common stock upon exercise of stock options and restricted stock unit vesting	$ 10,135			10,135
Issuance of common stock upon exercise of stock options , Shares	334,220
Unrealized gains (losses) on marketable securities	$ (3,708)				(3,708)
Stock-based compensation expense	28,880			28,880
Net loss	(109,279)					(109,279)
Ending Balance , Shares at Mar. 31, 2026		73,447,464	5,435,254
Ending Balance at Mar. 31, 2026	$ 1,174,367	$ 7	$ 1	$ 2,257,422	$ (1,355)	$ (1,081,708)