Condensed Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total		ATM Equity Offering Program	Common Stock	Common Stock ATM Equity Offering Program	Additional Paid-In Capital	Additional Paid-In Capital ATM Equity Offering Program	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Beginning balance at Dec. 31, 2022	$ 56,084			$ 1		$ 500,827		$ (251)	$ (444,493)
Beginning balance, (in shares) at Dec. 31, 2022				14,215,302
Issuance of common stock, net of issuance costs			$ 274				$ 274
Issuance of common stock (in shares)					106,781
Vesting of restricted stock units, (in shares)				37,131
Stock-based compensation	2,175					2,175
Unrealized (gain) loss on available-for-sale marketable securities	101							101
Net loss	(5,279)								(5,279)
Ending balance at Mar. 31, 2023	53,355			$ 1		503,276		(150)	(449,772)
Ending balance, (in shares) at Mar. 31, 2023				14,359,214
Beginning balance at Dec. 31, 2022	56,084			$ 1		500,827		(251)	(444,493)
Beginning balance, (in shares) at Dec. 31, 2022				14,215,302
Net loss	(35,520)
Ending balance at Sep. 30, 2023	27,725			$ 1		507,789		(55)	(480,010)
Ending balance, (in shares) at Sep. 30, 2023				14,614,890
Beginning balance at Mar. 31, 2023	53,355			$ 1		503,276		(150)	(449,772)
Beginning balance, (in shares) at Mar. 31, 2023				14,359,214
Issuance of common stock, net of issuance costs			518				518
Issuance of common stock (in shares)					168,000
Issuance of common stock under 2018 ESPP	91					91
Issuance of common stock under 2018 ESPP (in Shares)				41,497
Vesting of restricted stock units, (in shares)				26,766
Stock-based compensation	2,247					2,247
Unrealized (gain) loss on available-for-sale marketable securities	14							14
Net loss	(15,456)								(15,456)
Ending balance at Jun. 30, 2023	40,769			$ 1		506,132		(136)	(465,228)
Ending balance, (in shares) at Jun. 30, 2023				14,595,477
Fees related to the ATM offering program			$ (48)				$ (48)
Vesting of restricted stock units, (in shares)				19,413
Stock-based compensation	1,705					1,705
Unrealized (gain) loss on available-for-sale marketable securities	81							81
Net loss	(14,782)								(14,782)
Ending balance at Sep. 30, 2023	27,725			$ 1		507,789		(55)	(480,010)
Ending balance, (in shares) at Sep. 30, 2023				14,614,890
Beginning balance at Dec. 31, 2023	$ 28,398	[1]		$ 2		512,773		(24)	(484,353)
Beginning balance, (in shares) at Dec. 31, 2023	16,784,969			16,784,969
Repurchase of early exercised shares, (in shares)				(3,336)
Vesting of restricted stock units, (in shares)				5,014
Stock-based compensation	$ 1,394					1,394
Unrealized (gain) loss on available-for-sale marketable securities	(14)							(14)
Net loss	(5,790)								(5,790)
Ending balance at Mar. 31, 2024	23,988			$ 2		514,167		(38)	(490,143)
Ending balance, (in shares) at Mar. 31, 2024				16,786,647
Beginning balance at Dec. 31, 2023	$ 28,398	[1]		$ 2		512,773		(24)	(484,353)
Beginning balance, (in shares) at Dec. 31, 2023	16,784,969			16,784,969
Net loss	$ (17,550)
Ending balance at Sep. 30, 2024	$ 14,144			$ 2		516,006		39	(501,903)
Ending balance, (in shares) at Sep. 30, 2024	16,850,350			16,850,350
Beginning balance at Mar. 31, 2024	$ 23,988			$ 2		514,167		(38)	(490,143)
Beginning balance, (in shares) at Mar. 31, 2024				16,786,647
Issuance of common stock under 2018 ESPP	68					68
Issuance of common stock under 2018 ESPP (in Shares)				52,494
Vesting of restricted stock units, (in shares)				8,481
Stock-based compensation	974					974
Unrealized (gain) loss on available-for-sale marketable securities	3							3
Net loss	(5,279)								(5,279)
Ending balance at Jun. 30, 2024	19,754			$ 2		515,209		(35)	(495,422)
Ending balance, (in shares) at Jun. 30, 2024				16,847,622
Vesting of restricted stock units, (in shares)				2,728
Stock-based compensation	797					797
Unrealized (gain) loss on available-for-sale marketable securities	74							74
Net loss	(6,481)								(6,481)
Ending balance at Sep. 30, 2024	$ 14,144			$ 2		$ 516,006		$ 39	$ (501,903)
Ending balance, (in shares) at Sep. 30, 2024	16,850,350			16,850,350

[1] The balance sheet as of December 31, 2023 is derived from the audited financial statements as of that date.