CONDENSED CONSOLIDATED 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
CONSOLIDATED STATEMENTS OF OPERATIONS [Abstract]
Revenue	$ 48	$ 1	$ 48	$ 3
Operating expense:
Research and development	1,215	1,223	2,474	2,491
Selling, general and administrative	2,777	3,193	5,565	6,854
Total operating expense	3,992	4,416	8,039	9,345
(Loss) from operations	(3,944)	(4,415)	(7,991)	(9,342)
Interest and other income, net	323	588	693	1,224
(Loss) before taxes	(3,621)	(3,827)	(7,298)	(8,118)
Income tax (expense) benefit	0	(3)	(2)	(3)
Net (loss)	$ (3,621)	$ (3,830)	$ (7,300)	$ (8,121)
Basic (loss) per share (in Dollars per share)	$ (0.99)	$ (1.07)	$ (1.99)	$ (2.26)
Diluted (loss) per share (in Dollars per share)	$ (0.99)	$ (1.07)	$ (1.99)	$ (2.26)
Weighted average shares outstanding - basic (in Shares)	3,660	3,593	3,660	3,593
Weighted average shares outstanding - diluted (in Shares)	3,660	3,593	3,660	3,593