Condensed Consolidated Statement of Stockholders' Equity (Unaudited) - 6 months ended Jun. 30, 2015 - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance, January 1, 2015 at Dec. 31, 2014	$ 682,320	$ 50,366,546	$ (37,673,289)	$ 48,549,691	$ (448,421)	$ 61,476,847
Balance, June 30, 2015 at Jun. 30, 2015	684,450	50,272,806	(37,273,116)	50,978,228	(699,744)	63,962,624
Net income				2,867,493		2,867,493
Change in unrealized gain (loss) on available-for-sale securities, net of income taxes					$ (251,323)	(251,323)
Dividends on common stock ($0.10 per share)				$ (438,956)		(438,956)
Stock award plans		(202,914)	$ 400,173			197,259
Stock options exercised	$ 2,130	$ 109,174				$ 111,304