CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Balance at beginning at Dec. 31, 2020		$ 382	$ 102,117	$ (99,767)	$ 2,732
Balance at beginning (in shares) at Dec. 31, 2020		38,221,292
Issuances of shares and stock option exercises		$ 6	228		234
Issuances of shares and stock option exercises (in shares)		576,726
Exercise of conversion rights – convertible loan, related party		$ 101	1,918		2,019
Exercise of conversion rights convertible loan, related party (in shares)		10,095,555
Stock-based compensation			160		160
Net income (loss)				2,320	2,320
Balance at ending at Dec. 31, 2021		$ 489	104,423	(97,447)	7,465
Balance at ending (in shares) at Dec. 31, 2021		48,893,573
Issuances of shares and stock option exercises		$ 4	178		182
Issuances of shares and stock option exercises (in shares)		427,107
Stock-based compensation			625		625
Net income (loss)				(2,623)	(2,623)
Balance at ending at Dec. 31, 2022		$ 493	$ 105,226	$ (100,070)	$ 5,649
Balance at ending (in shares) at Dec. 31, 2022		49,320,680