Consolidated Statements of Stockholders' Deficit - USD ($) $ in Thousands	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Beginning balance value at Dec. 31, 2020	$ 402	$ (1,773)	$ 184,404	$ (212,116)	$ (29,083)
Balance, shares at Dec. 31, 2020	4,075,257	19,664
Issuance of common stock	$ 1		334		335
Issuance of common stock, shares	152,912
Treasury stock purchased		$ (95)			(95)
Treasury stock purchased, shares		13,093
Stock-based compensation expense			1,368		1,368
Net loss				(14,943)	(14,943)
Ending balance value at Dec. 31, 2021	$ 403	$ (1,868)	186,106	(227,059)	(42,418)
Balance, shares at Dec. 31, 2021	4,228,169	32,757
Issuance of common stock	$ 2		106		108
Issuance of common stock, shares	139,652
Treasury stock purchased		$ (108)			(108)
Treasury stock purchased, shares		38,363
Stock-based compensation expense			1,304		1,304
Net loss				(21,958)	(21,958)
Exercise of warrants
Exercise of warrants, shares	9,000
Ending balance value at Dec. 31, 2022	$ 405	$ (1,976)	$ 187,516	$ (249,017)	$ (63,072)
Balance, shares at Dec. 31, 2022	4,367,830	71,120