CONDENSED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (DEFICIT) - USD ($) $ in Thousands	Total	Convertible preferred stock Convertible preferred stock	Common stock	Additional paid-in capital	Accumulated other comprehensive income (loss)	Accumulated deficit
Beginning balance, preferred stock shares (in shares) at Dec. 31, 2022		5,571,959
Beginning balance, common stock shares (in shares) at Dec. 31, 2022			16,840,261
Beginning balance at Dec. 31, 2022	$ 33,291	$ 5	$ 17	$ 516,457	$ (12)	$ (483,176)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock under Employee Stock Purchase Plan (in shares)			19,472
Issuance of common stock under Employee Stock Purchase Plan	21			21
Stock-based compensation expense	410			410
Unrealized (loss) gain on investments	12				12
Net loss	(7,139)					(7,139)
Ending balance, preferred stock shares (in shares) at Mar. 31, 2023		5,571,959
Ending balance, common stock shares (in shares) at Mar. 31, 2023			16,859,733
Ending balance at Mar. 31, 2023	26,595	$ 5	$ 17	516,888	0	(490,315)
Beginning balance, preferred stock shares (in shares) at Dec. 31, 2022		5,571,959
Beginning balance, common stock shares (in shares) at Dec. 31, 2022			16,840,261
Beginning balance at Dec. 31, 2022	33,291	$ 5	$ 17	516,457	(12)	(483,176)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(14,152)
Ending balance, preferred stock shares (in shares) at Jun. 30, 2023		5,712,786
Ending balance, common stock shares (in shares) at Jun. 30, 2023			19,484,461
Ending balance at Jun. 30, 2023	33,997	$ 5	$ 19	531,301	0	(497,328)
Beginning balance, preferred stock shares (in shares) at Mar. 31, 2023		5,571,959
Beginning balance, common stock shares (in shares) at Mar. 31, 2023			16,859,733
Beginning balance at Mar. 31, 2023	26,595	$ 5	$ 17	516,888	0	(490,315)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock and preferred stock from private placement, net of offering costs (in shares)		140,827	2,615,536
Issuance of common stock and preferred stock from private placement, net of offering costs	14,003		$ 2	14,001
Issuance of common stock through upon vesting of restricted stock units (in shares)			9,192
Issuance of common stock through upon vesting of restricted stock units	30			30
Stock-based compensation expense	382			382
Net loss	(7,013)					(7,013)
Ending balance, preferred stock shares (in shares) at Jun. 30, 2023		5,712,786
Ending balance, common stock shares (in shares) at Jun. 30, 2023			19,484,461
Ending balance at Jun. 30, 2023	$ 33,997	$ 5	$ 19	531,301	0	(497,328)
Beginning balance, preferred stock shares (in shares) at Dec. 31, 2023		5,712,786
Beginning balance, common stock shares (in shares) at Dec. 31, 2023	20,222,672		20,222,672
Beginning balance at Dec. 31, 2023	$ 21,187	$ 5	$ 20	534,375	0	(513,213)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock and preferred stock from private placement, net of offering costs (in shares)		173,915	45,108,667
Issuance of common stock and preferred stock from private placement, net of offering costs	93,897		$ 45	93,852
Issuance of common stock through upon vesting of restricted stock units (in shares)			105,000
Issuance of common stock through upon vesting of restricted stock units	0
Issuance of common stock under Employee Stock Purchase Plan (in shares)			27,612
Issuance of common stock under Employee Stock Purchase Plan	31			31
Issuance of common stock upon exercise of common stock options (in shares)			1,300
Issuance of common stock upon exercise of common stock options	2			2
Stock-based compensation expense	985			985
Unrealized (loss) gain on investments	(45)				(45)
Net loss	(8,469)					(8,469)
Ending balance, preferred stock shares (in shares) at Mar. 31, 2024		5,886,701
Ending balance, common stock shares (in shares) at Mar. 31, 2024			65,465,251
Ending balance at Mar. 31, 2024	$ 107,588	$ 5	$ 65	629,245	(45)	(521,682)
Beginning balance, preferred stock shares (in shares) at Dec. 31, 2023		5,712,786
Beginning balance, common stock shares (in shares) at Dec. 31, 2023	20,222,672		20,222,672
Beginning balance at Dec. 31, 2023	$ 21,187	$ 5	$ 20	534,375	0	(513,213)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	$ (19,505)
Ending balance, preferred stock shares (in shares) at Jun. 30, 2024		5,886,701
Ending balance, common stock shares (in shares) at Jun. 30, 2024	65,465,876		65,465,876
Ending balance at Jun. 30, 2024	$ 98,181	$ 5	$ 65	630,916	(87)	(532,718)
Beginning balance, preferred stock shares (in shares) at Mar. 31, 2024		5,886,701
Beginning balance, common stock shares (in shares) at Mar. 31, 2024			65,465,251
Beginning balance at Mar. 31, 2024	107,588	$ 5	$ 65	629,245	(45)	(521,682)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock and preferred stock from private placement, net of offering costs	(43)			(43)
Issuance of common stock through upon vesting of restricted stock units	(152)			(152)
Issuance of common stock upon exercise of common stock options (in shares)			625
Issuance of common stock upon exercise of common stock options	1			1
Stock-based compensation expense	1,865			1,865
Unrealized (loss) gain on investments	(42)				(42)
Net loss	$ (11,036)					(11,036)
Ending balance, preferred stock shares (in shares) at Jun. 30, 2024		5,886,701
Ending balance, common stock shares (in shares) at Jun. 30, 2024	65,465,876		65,465,876
Ending balance at Jun. 30, 2024	$ 98,181	$ 5	$ 65	$ 630,916	$ (87)	$ (532,718)