STATEMENT OF SHAREHOLDERS' EQUITY (USD $)	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]
BALANCE at Dec. 31, 2011	$ 11,034,629	$ 29,518	$ 28,095,946	$ (10,081,789)	$ (7,009,046)
BALANCE (in shares) at Dec. 31, 2011		5,903,552		668,130
Shares issued - vested	0	185	(185)	0	0
Shares issued - vested (in shares)		37,006		0
Tax withholding related to vested shares from employee stock plans	(93,164)	0	(93,164)	0	0
Stock compensation expense	458,167	0	458,167	0	0
Cash dividends declared	(3,156,592)	0	0	0	(3,156,592)
Net income	2,979,629	0	0	0	2,979,629
BALANCE at Dec. 31, 2012	11,222,669	29,703	28,460,764	(10,081,789)	(7,186,009)
BALANCE (in shares) at Dec. 31, 2012		5,940,558		668,130
Shares issued - vested	0	185	(185)	0	0
Shares issued - vested (in shares)		36,988		0
Exercise of stock options	20,839	22	20,817	0	0
Exercise of stock options (in shares)		4,350		0
Tax withholding related to vested shares from employee stock plans	(154,522)	0	(154,522)	0	0
Stock compensation expense	538,304	0	538,304	0	0
Cash dividends declared	(3,178,909)	0	0	0	(3,178,909)
Excess tax benefit from stock-based compensation plans	23,534	0	23,534	0	0
Net income	3,805,210	0	0	0	3,805,210
BALANCE at Dec. 31, 2013	12,277,125	29,910	28,888,712	(10,081,789)	(6,559,708)
BALANCE (in shares) at Dec. 31, 2013		5,981,896		668,130
Shares issued - vested	0	260	(260)	0	0
Shares issued - vested (in shares)		52,046		0
Exercise of stock options	32,768	46	32,722	0	0
Exercise of stock options (in shares)		9,249		0
Tax withholding related to vested shares from employee stock plans	(147,378)	0	(147,378)	0	0
Stock compensation expense	608,645	0	608,645	0	0
Cash dividends declared	(3,212,267)	0	0	0	(3,212,267)
Excess tax benefit from stock-based compensation plans	71,582	0	71,582	0	0
Net income	3,206,081	0	0	0	3,206,081
BALANCE at Dec. 31, 2014	$ 12,836,556	$ 30,216	$ 29,454,023	$ (10,081,789)	$ (6,565,894)
BALANCE (in shares) at Dec. 31, 2014		6,043,191		668,130