CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (UNAUDITED) - USD ($)	ADDITIONAL PAID IN CAPITAL [Member]	RETAINED EARNINGS [Member]	TREASURY STOCK [Member]	ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) [Member]	Total
Beginning Balance at Dec. 31, 2016	$ 36,824,022	$ 6,643,476	$ (2,247,415)	$ (607,109)	$ 40,612,974
Net income		1,226,088			1,226,088
Other comprehensive income (loss)				369,068	369,068
Exercise of stock options	113,190				113,190
Stock-based compensation expense	18,835				18,835
Cash dividends		(695,016)			(695,016)
Ending balance at Mar. 31, 2017	36,956,047	7,174,548	(2,247,415)	(238,041)	41,645,139
Beginning Balance at Dec. 31, 2017	37,236,566	8,471,780	(2,247,415)	(696,296)	42,764,635
Net income		1,612,230			1,612,230
Other comprehensive income (loss)				(1,047,998)	(1,047,998)
Exercise of stock options	18,768				18,768
Stock-based compensation expense	18,882				18,882
Cash dividends		(749,668)			(749,668)
Common stock dividend	9,334,342	(9,334,342)
Ending balance at Mar. 31, 2018	$ 46,608,558		$ (2,247,415)	$ (1,744,294)	$ 42,616,849