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
Income Statement [Abstract]
Revenue	$ 0	$ 72	$ 4	$ 90
Cost of revenue	(62)	(74)	(62)	(107)
Gross (loss) margin	(62)	(2)	(58)	(17)
Operating expenses
Research and development	3,004	2,589	6,259	5,447
General and administrative	2,048	1,832	4,136	3,643
Selling and marketing	141	207	265	557
Total operating expenses	5,193	4,628	10,660	9,647
Loss from operations	(5,255)	(4,630)	(10,718)	(9,664)
Other income (expense)
Interest income	234	185	504	390
Accretion income		47	6	93
Interest expense	(18)	(35)	(39)	(74)
Other income, net	72	72	71	72
Total other income (expense), net	288	269	542	481
Net loss	$ (4,967)	$ (4,361)	$ (10,176)	$ (9,183)
Net loss per common share, basic	$ (0.17)	$ (0.16)	$ (0.34)	$ (0.35)
Net loss per common share, diluted	$ (0.17)	$ (0.16)	$ (0.34)	$ (0.35)
Weighted average number of common shares outstanding, basic	30,397	26,467	30,321	26,253
Weighted average number of common shares outstanding, diluted	30,397	26,467	30,321	26,253