Condensed Consolidated Statement of Stockholders' Equity (Unaudited) - 9 months ended Sep. 30, 2016 - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance at Dec. 31, 2015	$ 685,900	$ 50,441,464	$ (37,279,069)	$ 53,258,126	$ (683,956)	$ 66,422,465
Net income				4,074,664		4,074,664
Change in unrealized gain on available-for-sale securities, net of income taxes					1,272,051	1,272,051
Dividends on common stock ($0.24 per share)				(1,063,853)		(1,063,853)
Stock award plans		(53,320)	347,318			293,998
Stock options exercised	1,650	84,150				85,800
Balance at Sep. 30, 2016	$ 687,550	$ 50,472,294	$ (36,931,751)	$ 56,268,937	$ 588,095	$ 71,085,125