Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Operating expenses:
Research and development	$ 6,638	$ 4,415
General and administrative	3,073	2,767
Total operating expenses	9,711	7,182
Loss from operations	(9,711)	(7,182)
Other income	1,874	20
Loss before income tax expense	(7,837)	(7,162)
Income tax expense	0	0
Net loss	$ (7,837)	$ (7,162)
Net loss per share - basic and diluted (in dollars per share)	$ (0.06)	$ (0.07)
Basic and diluted weighted average shares outstanding (in shares)	126,375	100,858
Other comprehensive loss:
Net loss	$ (7,837)	$ (7,162)
Unrealized gain on marketable securities	156	0
Comprehensive loss	$ (7,681)	$ (7,162)