Nature of Business (Details) - USD ($) $ / shares in Units, $ in Thousands				3 Months Ended
	Apr. 15, 2024	Apr. 01, 2024	Mar. 02, 2023	Jun. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Dec. 31, 2023
Liquidity
Accumulated deficit						$ 1,112,010	$ 894,736
Carrying amount of cash and cash equivalents and short term investments						$ 298,390	$ 275,846
Preferred stock par value per share						$ 0.001	$ 0.001
Issuance of stock					$ 48,875
Common stock reserved for the conversion of Series A convertible preferred stock
Liquidity
Issuance of temporary preferred stock (in shares)	150,000	150,000	3,124,995
Temporary equity, par value per share		$ 0.001				$ 0.001
Aggregate purchase price		$ 147,750
Issuance costs		$ 2,250		$ 2,250
Price per share		$ 1,000