Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Treasury Stock [Member]	Total
Balance (in shares) at Dec. 31, 2018	2,110,013				264,853
Balance at Dec. 31, 2018	$ 2,110	$ 30,622,547	$ (12,311,138)	$ (982,095)	$ (5,338,560)	$ 11,992,864
Net income (loss)			623,644			623,644
Foreign currency translation adjustment				22,211		22,211
Total comprehensive income (loss)						645,855
Treasury stock acquired (Note 2) (in shares)					99,200
Treasury stock acquired (Note 2)					$ (540,144)	(540,144)
Other (in shares)					(489)
Other					$ 27,281	27,281
Stock-based compensation		5,306				5,306
Balance (in shares) at Mar. 31, 2019	2,110,013				363,564
Balance at Mar. 31, 2019	$ 2,110	30,627,853	(11,687,494)	(959,884)	$ (5,851,423)	12,131,162
Balance (in shares) at Dec. 31, 2018	2,110,013				264,853
Balance at Dec. 31, 2018	$ 2,110	30,622,547	(12,311,138)	(982,095)	$ (5,338,560)	11,992,864
Net income (loss)						69,682
Foreign currency translation adjustment						(15,554)
Total comprehensive income (loss)						54,128
Balance (in shares) at Sep. 30, 2019	2,110,013				363,564
Balance at Sep. 30, 2019	$ 2,110	30,638,465	(12,241,456)	(997,649)	$ (5,851,423)	11,550,047
Balance (in shares) at Mar. 31, 2019	2,110,013				363,564
Balance at Mar. 31, 2019	$ 2,110	30,627,853	(11,687,494)	(959,884)	$ (5,851,423)	12,131,162
Net income (loss)			(388,105)			(388,105)
Foreign currency translation adjustment				(10,458)		(10,458)
Total comprehensive income (loss)						(398,563)
Stock-based compensation		5,306				5,306
Balance (in shares) at Jun. 30, 2019	2,110,013				363,564
Balance at Jun. 30, 2019	$ 2,110	30,633,159	(12,075,599)	(970,342)	$ (5,851,423)	11,737,905
Net income (loss)			(165,857)			(165,857)
Foreign currency translation adjustment				(27,307)		(27,307)
Total comprehensive income (loss)						(193,164)
Stock-based compensation		5,306				5,306
Balance (in shares) at Sep. 30, 2019	2,110,013				363,564
Balance at Sep. 30, 2019	$ 2,110	30,638,465	(12,241,456)	(997,649)	$ (5,851,423)	11,550,047
Balance (in shares) at Dec. 31, 2019	2,110,013				363,564
Balance at Dec. 31, 2019	$ 2,110	30,643,771	(12,755,495)	(937,320)	$ (5,851,423)	11,101,643
Net income (loss)			662,336			662,336
Foreign currency translation adjustment				(39,611)		(39,611)
Total comprehensive income (loss)						622,725
Balance (in shares) at Mar. 31, 2020	2,110,013				363,564
Balance at Mar. 31, 2020	$ 2,110	30,643,771	(12,093,159)	(976,931)	$ (5,851,423)	11,724,368
Balance (in shares) at Dec. 31, 2019	2,110,013				363,564
Balance at Dec. 31, 2019	$ 2,110	30,643,771	(12,755,495)	(937,320)	$ (5,851,423)	11,101,643
Net income (loss)						338,564
Foreign currency translation adjustment						(6,366)
Total comprehensive income (loss)						332,198
Balance (in shares) at Sep. 30, 2020	2,110,013				363,564
Balance at Sep. 30, 2020	$ 2,110	30,643,771	(12,416,931)	(943,686)	$ (5,851,423)	11,433,841
Balance (in shares) at Mar. 31, 2020	2,110,013				363,564
Balance at Mar. 31, 2020	$ 2,110	30,643,771	(12,093,159)	(976,931)	$ (5,851,423)	11,724,368
Net income (loss)			(199,057)			(199,057)
Foreign currency translation adjustment				(13,796)		(13,796)
Total comprehensive income (loss)						(212,853)
Balance (in shares) at Jun. 30, 2020	2,110,013				363,564
Balance at Jun. 30, 2020	$ 2,110	30,643,771	(12,292,216)	(990,727)	$ (5,851,423)	11,511,515
Net income (loss)			(124,715)			(124,715)
Foreign currency translation adjustment				47,041		47,041
Total comprehensive income (loss)						(77,674)
Balance (in shares) at Sep. 30, 2020	2,110,013				363,564
Balance at Sep. 30, 2020	$ 2,110	$ 30,643,771	$ (12,416,931)	$ (943,686)	$ (5,851,423)	$ 11,433,841