Condensed Statements of Redeemable Convertible Preferred Stock and Stockholders' Deficit - USD ($) $ in Thousands	Total	Initial Public Offering	Common Stock	Common Stock Initial Public Offering	Additional Paid-in Capital	Additional Paid-in Capital Initial Public Offering	Accumulated Deficit	Series A-1 Redeemable Convertible Preferred Stock	Series A-1 Redeemable Convertible Preferred Stock Preferred Stock	Series B Redeemable Convertible Preferred Stock	Series B Redeemable Convertible Preferred Stock Preferred Stock	Series C Redeemable Convertible Preferred Stock	Series C Redeemable Convertible Preferred Stock Preferred Stock	Series D Redeemable Convertible Preferred Stock	Series D Redeemable Convertible Preferred Stock Preferred Stock	Series E Redeemable Convertible Preferred Stock	Series E Redeemable Convertible Preferred Stock Preferred Stock	Series F Redeemable Convertible Preferred Stock	Series F Redeemable Convertible Preferred Stock Preferred Stock
Beginning balance, shares at Dec. 31, 2022									5,075,000		11,973,000		73,598,283		53,271,754		112,422,700
Beginning balance at Dec. 31, 2022									$ 3,570		$ 10,000		$ 22,000		$ 47,300		$ 120,000
Beginning balance, shares at Dec. 31, 2022			3,842,694
Beginning balance at Dec. 31, 2022	$ (77,693)				$ 3,642		$ (81,335)
Issuance of common stock, net of issuance costs, shares			13,656
Issuance of common stock, net of issuance costs	68				68
Stock-based compensation expense	179				179
Net loss	(8,671)						(8,671)
Ending balance, shares at Mar. 31, 2023									5,075,000		11,973,000		73,598,283		53,271,754		112,422,700
Ending balance at Mar. 31, 2023									$ 3,570		$ 10,000		$ 22,000		$ 47,300		$ 120,000
Ending balance, shares at Mar. 31, 2023			3,856,350
Ending balance at Mar. 31, 2023	(86,117)				3,889		(90,006)
Beginning balance, shares at Dec. 31, 2022									5,075,000		11,973,000		73,598,283		53,271,754		112,422,700
Beginning balance at Dec. 31, 2022									$ 3,570		$ 10,000		$ 22,000		$ 47,300		$ 120,000
Beginning balance, shares at Dec. 31, 2022			3,842,694
Beginning balance at Dec. 31, 2022	(77,693)				3,642		(81,335)
Net loss	(32,052)
Ending balance, shares at Sep. 30, 2023									10,150,000		23,946,000		73,598,283		53,271,754		112,422,700		81,587,937
Ending balance at Sep. 30, 2023									$ 7,140		$ 20,000		$ 22,000		$ 47,300		$ 120,000		$ 105,020
Ending balance, shares at Sep. 30, 2023			5,068,651
Ending balance at Sep. 30, 2023	(107,584)		$ 1		5,802		(113,387)
Beginning balance, shares at Mar. 31, 2023									5,075,000		11,973,000		73,598,283		53,271,754		112,422,700
Beginning balance at Mar. 31, 2023									$ 3,570		$ 10,000		$ 22,000		$ 47,300		$ 120,000
Beginning balance, shares at Mar. 31, 2023			3,856,350
Beginning balance at Mar. 31, 2023	(86,117)				3,889		(90,006)
Issuance of common stock, net of issuance costs, shares			183,790
Issuance of common stock, net of issuance costs	165				165
Stock-based compensation expense	177				177
Net loss	(11,613)						(11,613)
Ending balance, shares at Jun. 30, 2023									5,075,000		11,973,000		73,598,283		53,271,754		112,422,700
Ending balance at Jun. 30, 2023									$ 3,570		$ 10,000		$ 22,000		$ 47,300		$ 120,000
Ending balance, shares at Jun. 30, 2023			4,040,140
Ending balance at Jun. 30, 2023	(97,388)				4,231		(101,619)
Issuance of Series F redeemable convertible preferred stock (inclusive of deemed dividend of $410 to accrete to redemption value), shares																			81,587,937
Issuance of Series F redeemable convertible preferred stock (inclusive of deemed dividend of $410 to accrete to redemption value), value																			$ 105,020
Issuance of Series F redeemable convertible preferred stock (inclusive of deemed dividend of $410 to accrete to redemption value)	(410)				(410)
Net loss									$ 3,570		$ 10,000
Net loss, shares									5,075,000		11,973,000
Issuance of common stock, net of issuance costs, shares			1,028,511
Issuance of common stock, net of issuance costs	1,588		$ 1		1,587
Stock-based compensation expense	394				394
Net loss	(11,768)						(11,768)
Ending balance, shares at Sep. 30, 2023									10,150,000		23,946,000		73,598,283		53,271,754		112,422,700		81,587,937
Ending balance at Sep. 30, 2023									$ 7,140		$ 20,000		$ 22,000		$ 47,300		$ 120,000		$ 105,020
Ending balance, shares at Sep. 30, 2023			5,068,651
Ending balance at Sep. 30, 2023	(107,584)		$ 1		5,802		(113,387)
Beginning balance, shares at Dec. 31, 2023								5,075,000	5,075,000	11,973,000	11,973,000	73,598,283	73,598,283	53,271,754	53,271,754	112,422,700	112,422,700	81,587,937	81,587,937
Beginning balance at Dec. 31, 2023								$ 3,570	$ 3,570	$ 10,000	$ 10,000	$ 22,000	$ 22,000	$ 47,300	$ 47,300	$ 120,000	$ 120,000	$ 105,020	$ 105,020
Beginning balance, shares at Dec. 31, 2023			5,222,283
Beginning balance at Dec. 31, 2023	(123,100)				6,842		(129,942)
Conversion of redeemable convertible preferred stock, shares									(5,075,000)		(11,973,000)		(73,598,283)		(53,271,754)		(112,422,700)		(81,587,937)
Conversion of redeemable convertible preferred stock, value									$ (3,570)		$ (10,000)		$ (22,000)		$ (47,300)		$ (120,000)		$ (105,020)
Conversion of redeemable convertible preferred stock, shares			38,413,909
Conversion of redeemable convertible preferred stock, value	307,890		$ 4		307,886
Issuance of common stock, net of issuance costs, shares			60	23,000,000
Issuance of common stock, net of issuance costs		$ 399,565		$ 3		$ 399,562
Stock-based compensation expense	1,517				1,517
Net loss	(16,934)						(16,934)
Ending balance, shares at Mar. 31, 2024			66,636,252
Ending balance at Mar. 31, 2024	568,938		$ 7		715,807		(146,876)
Beginning balance, shares at Dec. 31, 2023								5,075,000	5,075,000	11,973,000	11,973,000	73,598,283	73,598,283	53,271,754	53,271,754	112,422,700	112,422,700	81,587,937	81,587,937
Beginning balance at Dec. 31, 2023								$ 3,570	$ 3,570	$ 10,000	$ 10,000	$ 22,000	$ 22,000	$ 47,300	$ 47,300	$ 120,000	$ 120,000	$ 105,020	$ 105,020
Beginning balance, shares at Dec. 31, 2023			5,222,283
Beginning balance at Dec. 31, 2023	$ (123,100)				6,842		(129,942)
Conversion of redeemable convertible preferred stock, shares	38,413,909
Conversion of redeemable convertible preferred stock, shares	38,413,909
Net loss	$ (56,241)
Ending balance, shares at Sep. 30, 2024								0		0		0		0		0		0
Ending balance, shares at Sep. 30, 2024			67,537,858
Ending balance at Sep. 30, 2024	536,770		$ 7		722,946		(186,183)
Beginning balance, shares at Mar. 31, 2024			66,636,252
Beginning balance at Mar. 31, 2024	568,938		$ 7		715,807		(146,876)
Issuance of common stock, net of issuance costs, shares			23,600
Issuance of common stock, net of issuance costs	77				77
Stock-based compensation expense	2,246				2,246
Net loss	(18,902)						(18,902)
Ending balance, shares at Jun. 30, 2024			66,659,852
Ending balance at Jun. 30, 2024	552,359		$ 7		718,130		(165,778)
Issuance of common stock, net of issuance costs, shares			878,006
Issuance of common stock, net of issuance costs	2,167				2,167
Stock-based compensation expense	2,649				2,649
Net loss	(20,405)						(20,405)
Ending balance, shares at Sep. 30, 2024								0		0		0		0		0		0
Ending balance, shares at Sep. 30, 2024			67,537,858
Ending balance at Sep. 30, 2024	$ 536,770		$ 7		$ 722,946		$ (186,183)