Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Operating expenses:
Research and development	$ 2,364	$ 982	$ 3,001	$ 1,902
General and administrative	1,442	2,237	3,325	4,192
Total operating expenses	3,806	3,219	6,326	6,094
Loss from operations	(3,806)	(3,219)	(6,326)	(6,094)
Other income (expense)
Change in fair value of warrant liabilities	3,072		2,988
Other expense		(84)		(84)
Loss before income taxes	(734)	(3,303)	(3,338)	(6,178)
Provision for income taxes	0	0	0	0
Net loss	(734)	(3,303)	(3,338)	(6,178)
Other comprehensive loss, net of tax		(3)		(4)
Comprehensive loss	$ (734)	$ (3,306)	$ (3,338)	$ (6,182)
Loss per share:
Net loss per share, basic	$ (0.02)	$ (3.72)	$ (0.08)	$ (6.95)
Net loss per share, diluted	$ (0.02)	$ (3.72)	$ (0.08)	$ (6.95)
Weighted average shares of common stock outstanding:
Basic (in shares)	40,472,026	888,693	40,472,026	888,693
Diluted (in shares)	40,472,026	888,693	40,472,026	888,693