Convertible Preferred Stock - Summary of Convertible Preferred Stock (Details) - USD ($) $ / shares in Units, $ in Thousands	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022
Temporary Equity [Line Items]
Convertible preferred stock, carrying value	$ 224,157			$ 149,215
Series A Convertible Preferred Stock
Temporary Equity [Line Items]
Convertible preferred stock, shares authorized	75,000,000			75,000,000
Convertible preferred stock, shares issued	75,000,000			75,000,000
Convertible preferred stock, shares outstanding	75,000,000	75,000,000	75,000,000	75,000,000	75,000,000	75,000,000	75,000,000	75,000,000
Convertible preferred stock, carrying value	$ 74,694	$ 74,694	$ 74,694	$ 74,694	$ 74,694	$ 74,694	$ 74,694	$ 74,694
Convertible preferred stock, liquidation preference	$ 75,000			$ 75,000
Conversion price per share	$ 1			$ 1
Series B Convertible Preferred Stock
Temporary Equity [Line Items]
Convertible preferred stock, shares authorized	121,657,452			121,657,452
Convertible preferred stock, shares issued	121,657,452			60,828,720
Convertible preferred stock, shares outstanding	121,657,452	121,657,452	60,828,720	60,828,720	60,828,720	58,801,098
Convertible preferred stock, carrying value	$ 149,463	$ 149,463	$ 74,521	$ 74,521	$ 74,521	$ 72,021
Convertible preferred stock, liquidation preference	$ 150,000			$ 75,000
Conversion price per share	$ 1.23297			$ 1.23297