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)		7,807,103				(33,840)
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 income (loss)		0	0	0	(60,454)	0	(60,454)
Net income		$ 0	0	0	(60,454)	$ 0	(60,454)
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
Share-based compensation expense		$ 0	18,096	0	0	$ 0	18,096
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							(54,988)
Net income (loss)							19,546
Net income							19,546
Balance (in shares) at Jun. 30, 2022		7,820,124				(33,840)
Balance at Jun. 30, 2022		$ 7,820	72,751,200	535,079	(70,303,004)	$ (57,847)	2,933,248
Balance (in shares)		7,807,103				(33,840)
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
Foreign currency translation adjustments		0	0	(93,288)	0	0	(93,288)
Share-based compensation expense		0	16,916	0	0	0	16,916
Net income (loss)		$ 0	0	0	80,000	$ 0	80,000
Issuance of common stock for compensation (in shares)		13,021				0
Issuance of common stock for compensation		$ 13	24,987	0	0	$ 0	25,000
Net income		$ 0	0	0	80,000	$ 0	80,000
Balance (in shares) at Jun. 30, 2022		7,820,124				(33,840)
Balance at Jun. 30, 2022		$ 7,820	72,751,200	535,079	(70,303,004)	$ (57,847)	2,933,248
Share-based compensation expense		$ 0	16,916	0	0	$ 0	16,916
Balance (in shares)		7,820,124				(33,840)
Balance (in shares)		7,840,124				(143,637)
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	0	(2,296)	0	0	(2,296)
Share-based compensation expense	0	0	119,100	0	0	0	119,100
Net income (loss)	0	0	0	0	(294,928)	0	(294,928)
Net income	0	$ 0	0	0	(294,928)	$ 0	(294,928)
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
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 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							31,476
Net income (loss)							(237,754)
Net income							(237,754)
Balance (in shares) at Jun. 30, 2023		8,154,474				(143,637)
Balance at Jun. 30, 2023	0	$ 8,154	73,373,030	347,836	(69,908,158)	$ (164,840)	3,656,022
Balance (in shares)		8,137,085				(143,637)
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
Foreign currency translation adjustments	0	0	0	33,772	0	0	33,772
Share-based compensation expense	0	0	69,238	0	0	0	69,238
Net income (loss)	0	0	0	0	57,174	0	57,174
Net income	0	$ 0	0	0	57,174	$ 0	57,174
Balance (in shares) at Jun. 30, 2023		8,154,474				(143,637)
Balance at Jun. 30, 2023	0	$ 8,154	73,373,030	347,836	(69,908,158)	$ (164,840)	3,656,022
Issuance of common stock for signing bonus (in shares)		13,889				0
Issuance of common stock for signing bonus	0	$ 14	24,986	0	0	$ 0	25,000
Share-based compensation expense	0	$ 0	69,238	0	0	$ 0	69,238
Option exercise (in shares)		3,500				0
Option exercise	$ 0	$ 3	$ 3,409	$ 0	$ 0	$ 0	$ 3,412
Balance (in shares)		8,154,474				(143,637)