Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Total
BALANCE at Dec. 31, 2019	$ 250	$ 27	$ 15,748	$ (257)	$ 4,208	$ 19,976
Net Income (loss)	0	0	0	0	1,985	1,985
Foreign currency translation adjustment	0	0	0	54	0	54
Compensation on stock-based awards	0	0	111	0	0	111
Net Income	0	0	0	0	1,985	1,985
BALANCE at Sep. 30, 2020	250	27	15,859	(203)	6,193	22,126
BALANCE at Jun. 30, 2020	250	27	15,823	(299)	4,222	20,023
Net Income (loss)	0	0	0	0	1,971	1,971
Foreign currency translation adjustment	0	0	0	96	0	96
Compensation on stock-based awards	0	0	36	0	0	36
Net Income	0	0	0	0	1,971	1,971
BALANCE at Sep. 30, 2020	250	27	15,859	(203)	6,193	22,126
BALANCE at Dec. 31, 2020	250	27	15,816	(37)	2,662	18,718	[1]
Net Income (loss)	0	0	0	0	2,188	2,188
Foreign currency translation adjustment	0	0	0	20	0	20
Compensation on stock-based awards	0	0	74	0	0	74
Net Income	0	0	0	0	2,188	2,188
Stock option exercises	0	0	36	0	0	36
BALANCE at Sep. 30, 2021	250	27	15,926	(17)	4,850	21,036
BALANCE at Jun. 30, 2021	250	27	15,862	(12)	1,293	17,420
Net Income (loss)	0	0	0	0	3,557	3,557
Foreign currency translation adjustment	0	0	0	(5)	0	(5)
Compensation on stock-based awards	0	0	28	0	0	28
Net Income	0	0	0	0	3,557	3,557
Stock option exercises	0	0	36	0	0	36
BALANCE at Sep. 30, 2021	$ 250	$ 27	$ 15,926	$ (17)	$ 4,850	$ 21,036

[1] The balance sheet at December 31, 2020 has been derived from the audited financial statements at that date