Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($)	Common Stock	Additional Paid In Capital	Accumulated Other Comprehensive Loss	Retained Earnings	Total
Beginning balance at Dec. 31, 2018	$ 93,382	$ 10,235,827	$ (295,734)	$ 17,399,776	$ 27,433,251
Beginning balance, shares at Dec. 31, 2018	9,338,191
Net income				715,170	715,170
Dividends, common stock				(468,306)	(468,306)
Options exercised	$ 279	13,520			13,799
Options exercised, shares	27,928
Adoption of ASU 2016-02 Leases (Topic 842)				972	972
Foreign currency translation adjustment			1,497		1,497
Ending Balance at Mar. 31, 2019	$ 93,661	10,249,347	(294,237)	17,647,612	27,696,383
Ending balance, shares at Mar. 31, 2019	9,366,119
Beginning balance at Dec. 31, 2019	$ 94,428	10,503,171	(294,491)	20,431,156	30,734,264
Beginning balance, shares at Dec. 31, 2019	9,442,809
Net income				626,881	626,881
Options exercised	$ 53	(53)
Options exercised, shares	5,296
Foreign currency translation adjustment				(2,328)	(2,328)
Ending Balance at Mar. 31, 2020	$ 94,481	$ 10,503,118	$ (296,819)	$ 21,058,037	$ 31,358,817
Ending balance, shares at Mar. 31, 2020	9,448,105