Net Loss Per Common Share - Schedule of Basic and Diluted Net Loss Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2026	Mar. 31, 2026	Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2026	Jun. 30, 2025
Numerator
Net income (loss)	$ 12,477	$ 26,490	$ (113,726)	$ (128,185)	$ 38,967	$ (241,911)
Less: cumulative dividends to preferred stockholders	(4,100)		0		(8,381)	0
Less: deemed dividend to preferred stockholders related to a conversion price adjustment	(46,052)		0		(46,052)	0
Net loss attributable to common stockholders, basic	(37,675)		(113,726)		(15,466)	(241,911)
Net loss attributable to common stockholders, diluted	$ (95,955)		$ (113,726)		$ (138,404)	$ (241,911)
Denominator
Weighted-average common shares outstanding, basic (in shares)	187,241		60,197		181,825	59,720
Effect of dilutive liability-classified warrants (in shares)	5,962		0		7,061	0
Weighted-average common shares outstanding, diluted (in shares)	193,203		60,197		188,886	59,720
Net loss per common share, basic (in dollars per share)	$ (0.20)		$ (1.89)		$ (0.09)	$ (4.05)
Net loss per common share, diluted (in dollars per share)	$ (0.50)		$ (1.89)		$ (0.73)	$ (4.05)
Common stock warrants
Numerator
Less: gain on change in fair value of liability-classified warrants	$ (58,280)		$ 0		$ (122,938)	$ 0