Condensed Consolidated Statement of Stockholders' Equity (Unaudited) - 9 months ended Sep. 30, 2015 - USD ($)	Preferred Stock	Common Stock	Capital in Excess of Par	Accumulated Other Comprehensive Income	Retained Earnings	Treasury Stock	Total
Beginning Balance, Shares at Dec. 31, 2014		8,235,095				926,338
Beginning Balance, Amount at Dec. 31, 2014		$ 82,351	$ 32,873,383	$ 946,332	$ 8,203,003	$ (1,604,173)	$ 40,500,896
Stock-based compensation			129,546				129,546
Shares deducted from exercise of stock options for payment of withholding taxes, Shares		(30,755)
Shares deducted from exercise of stock options for payment of withholding taxes, Amount		$ (308)	(243,354)				(243,662)
Excess tax benefit from exercise of stock options			223,976				$ 223,976
Exercise of stock options, Shares		83,558
Exercise of stock options, Amount		$ 836	$ (836)
Acquisition of treasury stock, Shares						26,450
Acquisition of treasury stock, Amount						$ (204,060)	$ (204,060)
Dividends					$ (1,098,946)		(1,098,946)
Net income					$ 5,107,335		5,107,335
Change in unrealized gains on available-for-sale securities, net of tax				$ (391,975)			(391,975)
Ending Balance, Shares at Sep. 30, 2015		8,287,898				952,788
Ending Balance, Amount at Sep. 30, 2015		$ 82,879	$ 32,982,715	$ 554,357	$ 12,211,392	$ (1,808,233)	$ 44,023,110