Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating Expense [Member]
Research and development	$ 9,522	$ 6,638
General and administrative	3,248	3,073
Total operating expenses	12,770	9,711
Loss from operations	(12,770)	(9,711)
Other income	1,983	1,874
Loss before income tax expense	(10,787)	(7,837)
Income tax expense	0	0
Net loss	$ (10,787)	$ (7,837)
Net loss per share - basic and diluted (in dollars per share)	$ (0.08)	$ (0.06)
Basic and diluted weighted average shares outstanding (in shares)	136,608	126,375
Other comprehensive loss:
Net loss	$ (10,787)	$ (7,837)
Unrealized (loss) gain on marketable securities	(127)	156
Comprehensive loss	$ (10,914)	$ (7,681)