CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($)	ADDITIONAL PAID IN CAPITAL [Member]	RETAINED EARNINGS [Member]	TREASURY STOCK [Member]	ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) [Member]	Total
Beginning Balance at Dec. 31, 2013	$ 28,678,150	$ 7,007,532	$ (1,902,439)	$ 955,900	$ 34,739,143
Net income		4,398,820			4,398,820
Other comprehensive income (loss)				287,122	287,122
Exercise of stock options	26,050				26,050
Stock-based compensation expense	74,908				74,908
Cash dividends		(2,766,061)			(2,766,061)
Ending balance at Dec. 31, 2014	28,779,108	8,640,291	(1,902,439)	1,243,022	36,759,982
Net income		4,884,288			4,884,288
Other comprehensive income (loss)				(250,473)	(250,473)
Exercise of stock options	122,946				122,946
10% stock dividend 446,597 common 21,945 treasury at $15.72	7,360,703	(7,020,505)	(344,976)		(4,778)
Stock-based compensation expense	78,987				78,987
Cash dividends		(2,439,240)			(2,439,240)
Ending balance at Dec. 31, 2015	36,341,744	4,064,834	(2,247,415)	992,549	39,151,712
Net income		5,247,063			5,247,063
Other comprehensive income (loss)				(1,599,658)	(1,599,658)
Exercise of stock options	405,749				405,749
Stock-based compensation expense	76,529				76,529
Cash dividends		(2,668,421)			(2,668,421)
Ending balance at Dec. 31, 2016	$ 36,824,022	$ 6,643,476	$ (2,247,415)	$ (607,109)	$ 40,612,974