CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Operating expenses:
Research and development	$ 4,584	$ 4,784	$ 9,501	$ 9,988
General and administrative	3,203	5,393	7,016	11,197
Total operating expenses	7,787	10,177	16,517	21,185
Loss from operations	(7,787)	(10,177)	(16,517)	(21,185)
Other income (expense):
Interest income	669	952	1,437	1,921
Interest expense	(24)	(38)	(52)	(80)
Loss on asset disposal		(191)		(296)
Other income (expense), net		68	(2)	77
Net loss	$ (7,142)	$ (9,386)	$ (15,134)	$ (19,563)
Net loss per common share, basic	$ (0.28)	$ (0.31)	$ (0.6)	$ (0.64)
Net loss per common share, diluted	$ (0.28)	$ (0.31)	$ (0.6)	$ (0.64)
Weighted-average number of shares used in computing net loss per common share, basic	25,104,439	30,507,018	25,076,775	30,685,561
Weighted-average number of shares used in computing net loss per common share, diluted	25,104,439	30,507,018	25,076,775	30,685,561
Comprehensive loss:
Net loss	$ (7,142)	$ (9,386)	$ (15,134)	$ (19,563)
Other comprehensive items:
Unrealized gain on marketable securities	44	274	116	455
Total other comprehensive income	44	274	116	455
Total comprehensive loss	$ (7,098)	$ (9,112)	$ (15,018)	$ (19,108)