UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' DEFICIT - USD ($) shares in Thousands, $ in Thousands	Preferred Stock [Member]	Common Stock [Member]	Treasury Stock, Common [Member]	AOCI Attributable to Parent [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Beginning balance, value at Dec. 31, 2022	$ 0	$ 11	$ (362)	$ (43)	$ 92,505	$ (96,326)	$ (4,215)
Beginning balance, shares at Dec. 31, 2022	0	1,060	1
Stock-based compensation expense					94		94
Exercise of stock options					7		7
Exercise of stock options, shares		3
Public stock offering, net of fees					21		21
Tax withholdings related to stock-based compensation awards					(5)		(5)
Net loss						(4,734)	(4,734)
Ending balance, value at Mar. 31, 2023	$ 0	$ 11	$ (362)	(43)	92,622	(101,060)	(8,832)
Ending balance, shares at Mar. 31, 2023	0	1,063	1
Beginning balance, value at Dec. 31, 2023	$ 0	$ 18	$ (362)	(43)	101,049	(110,217)	(9,555)
Beginning balance, shares at Dec. 31, 2023	0	1,791	1
Stock-based compensation expense					142		142
Issuance of preferred stock to reduce note payable	$ 9,275						9,275
Issuance of preferred stock to reduce note payable, shares	9,275
Public stock offering, net of fees		$ 1			484		485
Public stock offering, net of fees, shares		115
Issuance of common stock to reduce note payable					200		200
Issuance of common stock to reduce note payable, shares		52
Net loss						(1,716)	(1,716)
Ending balance, value at Mar. 31, 2024	$ 9,275	$ 19	$ (362)	$ (43)	$ 101,875	$ (111,933)	$ (1,169)
Ending balance, shares at Mar. 31, 2024	9,275	1,958	1