Condensed Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Operating expenses:
Research and development expenses	$ 2,891	$ 2,825	$ 5,448	$ 5,877
Selling, general and administrative expenses	4,158	2,629	6,555	5,080
Loss from operations	(7,049)	(5,454)	(12,003)	(10,957)
Other income:
Realized gains from sales of trading securities	239	379	665	787
Unrealized gain (loss) from trading securities	(79)	46	(273)	90
Interest income, net	195	73	414	132
Total other income	355	498	806	1,009
Net loss	$ (6,694)	$ (4,956)	$ (11,197)	$ (9,948)
Net loss per basic common share	$ (0.33)	$ (0.31)	$ (0.55)	$ (0.62)
Net loss per diluted common share	$ (0.33)	$ (0.31)	$ (0.55)	$ (0.62)
Weighted average number of common shares outstanding:
Basic	20,352	16,067	20,352	16,062
Diluted	20,352	16,067	20,352	16,062