Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Common Stock Including Additional Paid in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Dec. 31, 2019	61,566,076
Balance at Dec. 31, 2019	$ 73,773	$ 342	$ (66,988)	$ 7,127
Share based compensation (in shares)	409,672
Share based compensation	$ 168	0	0	168
Beneficial conversion feature on paid-in-kind interest	12	0	0	12
Net Income (Loss) Attributable to Parent, Total	0	0	(2,997)	(2,997)
Other comprehensive income (loss)	$ 0	69	0	$ 69
Balance (in shares) at Dec. 31, 2020	61,975,748			61,975,748
Balance at Dec. 31, 2020	$ 73,953	411	(69,985)	$ 4,379
Share based compensation (in shares)	0
Share based compensation	$ 147	0	0	147
Net Income (Loss) Attributable to Parent, Total	0	0	(1,811)	(1,811)
Other comprehensive income (loss)	$ 0	(15)	0	(15)
Common stock issued upon conversion of notes payable (in shares)	5,064,137
Common stock issued upon conversion of notes payable	$ 1,621	0	0	$ 1,621
Issuance of common stock upon exercise of stock options (in shares)	801,056			797,306
Issuance of common stock upon exercise of stock options	$ 296			$ 296
Balance (in shares) at Dec. 31, 2021	67,840,941			67,840,941
Balance at Dec. 31, 2021	$ 76,017	$ 396	$ (71,796)	$ 4,617