Consolidated Statements of Stockholders' Equity - 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, 2017	2,110,013				264,853
Balance at Dec. 31, 2017	$ 2,110	$ 30,598,920	$ (10,040,229)	$ (857,654)	$ (5,338,560)	$ 14,364,587
Net loss			(1,903,341)			(1,903,341)
Foreign currency translation adjustment				(124,441)		(124,441)
Total comprehensive income (loss)						(2,027,782)
Adoption of Accounting Standards Update 2014-09			(367,568)			(367,568)
Stock-based compensation		23,627				23,627
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 loss			(444,357)			(444,357)
Foreign currency translation adjustment				44,775		44,775
Total comprehensive income (loss)						(399,582)
Stock-based compensation		21,224				21,224
Treasury stock acquired (in shares)					99,200
Treasury stock acquired					$ (540,144)	(540,144)
Other (in shares)					(489)
Other					$ 27,281	27,281
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