Consolidated Statement of Stockholders' Equity (USD $)	Preferred Stock	Common Stock	Capital in Excess of Par	Accumulated Other Comprehensive Income	Retained Earnings	Treasury Stock	Total
Begining Balance, Amount at Dec. 31, 2010		$ 46,432	$ 13,633,913	$ 145,247	$ 281,531	$ (1,163,258)	$ 12,943,865
Begining Balance, Shares at Dec. 31, 2010		4,643,122				804,736
Stock-based compensation, Shares
Stock-based compensation, Amount			105,879				105,879
Acquisition of treasury stock, Shares						78,486
Acquisition of treasury stock, Amount						(237,159)	(237,159)
Dividends					(230,303)		(230,303)
Net income					2,503,121		2,503,121
Change in unrealized gains on available for sale securities, net of tax				225,152			225,152
Ending Balance, Amount at Dec. 31, 2011		46,432	13,739,792	370,399	2,554,349	(1,400,417)	15,310,555
Ending Balance, Shares at Dec. 31, 2011		4,643,122				883,222
Stock-based compensation, Shares
Stock-based compensation, Amount			48,277				48,277
Acquisition of treasury stock, Shares						6,236
Acquisition of treasury stock, Amount		0				(27,128)	(27,128)
Dividends					(533,763)		(533,763)
Net income					766,706		766,706
Change in unrealized gains on available for sale securities, net of tax				653,330			653,330
Exercise of stock options, Shares		112,391
Exercise of stock options, Amount		1,125	45,950				47,075
Shares deducted from exercise of stock options for payment of withholding taxes, Shares		(25,156)
Shares deducted from exercise of stock options for payment of withholding taxes, Amount		(253)	(142,999)				(143,252)
Excess tax benefit from exercise of stock options			160,016				160,016
Ending Balance, Amount at Dec. 31, 2012		$ 47,304	$ 13,851,036	$ 1,023,729	$ 2,787,292	$ (1,427,545)	$ 16,281,816
Ending Balance, Shares at Dec. 31, 2012		4,730,357				889,458