Condensed Consolidated Statement of Stockholders' Equity (Unaudited) - 6 months ended Jun. 30, 2017 - 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, 2016	$ 687,550	$ 50,552,077	$ (37,303,288)	$ 57,347,282	$ (1,309,241)	$ 69,974,380
Net income				3,021,814		3,021,814
Change in unrealized gain on available-for-sale securities and effect of interest rate swaps, net of income taxes					1,016,525	1,016,525
Dividends on common stock				(884,305)		(884,305)
Stock award plans		16,977	177,747			194,724
Balance at Jun. 30, 2017	$ 687,550	$ 50,569,054	$ (37,125,541)	$ 59,484,791	$ (292,716)	$ 73,323,138