STATEMENTS OF SHAREHOLDERS' EQUITY (USD $)	Common Stock [Member]	Additional Paid-In Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Total
Balance at Dec. 31, 2009	$ 29,309	$ 27,419,359	$ (10,053,364)	$ (8,100,920)	$ 9,294,384
Balance (in shares) at Dec. 31, 2009	5,861,872		664,523
Shares issued - vested	78	(78)	0	0	0
Shares issued - vested (in shares)	15,486		0
Tax withholding related to vested shares from employee stock plans	0	(49,261)	0	0	(49,261)
Stock compensation expense	0	394,972	0	0	394,972
Acquisition of treasury stock	0	0	(6,034)	0	(6,034)
Acquisition of treasury stock (in shares)	0		822
Cash dividends declared	0	0	0	(2,500,268)	(2,500,268)
Net income	0	0	0	2,613,720	2,613,720
Balance at Dec. 31, 2010	29,387	27,764,992	(10,059,398)	(7,987,468)	9,747,513
Balance (in shares) at Dec. 31, 2010	5,877,358		665,345
Shares issued - vested	131	(131)	0	0	0
Shares issued - vested (in shares)	26,194		0
Tax withholding related to vested shares from employee stock plans	0	(86,992)	0	0	(86,992)
Stock compensation expense	0	418,077	0	0	418,077
Acquisition of treasury stock	0	0	(22,391)	0	(22,391)
Acquisition of treasury stock (in shares)	0		2,785
Cash dividends declared	0	0	0	(2,510,861)	(2,510,861)
Net income	0	0	0	3,489,283	3,489,283
Balance at Dec. 31, 2011	29,518	28,095,946	(10,081,789)	(7,009,046)	11,034,629
Balance (in shares) at Dec. 31, 2011	5,903,552		668,130
Shares issued - vested	185	(185)	0	0	0
Shares issued - vested (in shares)	37,006		0
Tax withholding related to vested shares from employee stock plans	0	(93,164)	0	0	(93,164)
Stock compensation expense	0	458,167	0	0	458,167
Cash dividends declared	0	0	0	(3,156,592)	(3,156,592)
Net income	0	0	0	2,979,629	2,979,629
Balance at Dec. 31, 2012	$ 29,703	$ 28,460,764	$ (10,081,789)	$ (7,186,009)	$ 11,222,669
Balance (in shares) at Dec. 31, 2012	5,940,558		668,130