Condensed Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - USD ($)	Deferred Compensation, Share-Based Payments [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Treasury Stock, Common [Member]	Total
Balance (in shares) at Dec. 31, 2021		7,807,103				(33,840)
Balance at Dec. 31, 2021		$ 7,807	$ 72,691,201	$ 590,067	$ (70,322,550)	$ (57,847)	$ 2,908,678
Foreign currency translation adjustments		0	0	38,300	0	0	38,300
Share-based compensation expense		0	18,096	0	0	0	18,096
Net loss		0	0	0	(60,454)	0	(60,454)
Share-based compensation expense		$ 0	18,096	0	0	$ 0	18,096
Balance (in shares) at Mar. 31, 2022		7,807,103				(33,840)
Balance at Mar. 31, 2022		$ 7,807	72,709,297	628,367	(70,383,004)	$ (57,847)	2,904,620
Balance (in shares) at Dec. 31, 2022		7,840,124				(143,637)
Balance at Dec. 31, 2022	$ 82,180	$ 7,840	72,800,976	316,360	(69,670,404)	$ (164,840)	3,372,112
Foreign currency translation adjustments		0	0	(2,296)	0	0	(2,296)
Share-based compensation expense	0	0	119,100	0	0	0	119,100
Net loss	0	$ 0	0	0	(294,928)	$ 0	(294,928)
Issuance of common stock for accrued bonus (in shares)		46,961				0
Issuance of common stock for accrued bonus	(82,180)	$ 47	82,133	0	0	$ 0	0
Issuance of common stock for signing bonus (in shares)		250,000				0
Issuance of common stock for signing bonus	0	$ 250	273,188	0	0	$ 0	273,438
Share-based compensation expense	0	$ 0	119,100	0	0	$ 0	119,100
Balance (in shares) at Mar. 31, 2023		8,137,085				(143,637)
Balance at Mar. 31, 2023	$ 0	$ 8,137	$ 73,275,397	$ 314,064	$ (69,965,332)	$ (164,840)	$ 3,467,426