CONDENSED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Operating expenses:
Research and development	$ 12,825	$ 11,945	$ 27,849	$ 24,331
General and administrative	5,303	6,007	11,050	10,855
Total operating expenses	18,128	17,952	38,899	35,186
Loss from operations	(18,128)	(17,952)	(38,899)	(35,186)
Other income (expense), net	208	(35)	377	666
Net loss	$ (17,920)	$ (17,987)	$ (38,522)	$ (34,520)
Net loss per common share
Basic (in dollars per share)	$ (0.65)	$ (0.65)	$ (1.39)	$ (1.25)
Diluted (in dollars per share)	$ (0.65)	$ (0.65)	$ (1.39)	$ (1.25)
Weighted average shares outstanding
Basic (in shares)	27,744,762	27,610,398	27,726,864	27,603,948
Diluted (in shares)	27,744,762	27,610,398	27,726,864	27,603,948
Comprehensive loss:
Net loss	$ (17,920)	$ (17,987)	$ (38,522)	$ (34,520)
Unrealized loss on marketable securities	(141)	(374)	(1,677)	(974)
Total comprehensive loss	$ (18,061)	$ (18,361)	$ (40,199)	$ (35,494)