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		2,612,473			2,612,473
Other comprehensive loss				1,026,912	1,026,912
Stock option exercises	154,858				154,858
Stock-based comp expense	36,542				36,542
Cash dividends		(1,390,800)			(1,390,800)
Ending balance at Jun. 30, 2017	37,015,422	7,865,149	(2,247,415)	419,803	43,052,959
Beginning Balance at Dec. 31, 2017	37,236,566	8,471,780	(2,247,415)	(696,296)	42,764,635
Net income		3,338,587			3,338,587
Other comprehensive loss				(1,437,452)	(1,437,452)
Stock option exercises	123,296		(20,849)		102,447
Stock-based comp expense	37,763				37,763
Cash dividends		(1,581,246)			(1,581,246)
Common stock dividend	9,334,342	(9,334,342)
Ending balance at Jun. 30, 2018	$ 46,731,967	$ 894,779	$ (2,268,264)	$ (2,133,748)	$ 43,224,734