Statements of Stockholders' Equity (USD $)	Total	Common Stock	Additional Paid-in Capital	Retained Earnings
Beginning balance at Dec. 31, 2009	$ 11,026,086	$ 196,706	$ 2,198,289	$ 8,631,091
Beginning balance, shares at Dec. 31, 2009		1,967,057
Net income	1,113,920			1,113,920
Exercise of stock options	37,740	850	36,890
Exercise of stock options, shares		8,500
Common stock repurchased	(15,130)	(220)	(2,334)	(12,576)
Common stock repurchased, shares		(2,200)
Tax benefit resulting from stock option exercises	914		914
Stock based compensation and related tax benefit	29,417		29,417
Ending balance at Dec. 31, 2010	12,192,947	197,336	2,263,176	9,732,435
Ending balance, shares at Dec. 31, 2010		1,973,357
Net income	698,257			698,257
Exercise of stock options	73,210	1,150	72,060
Exercise of stock options, shares		11,500
Common stock repurchased	(2,079)	(27)	(294)	(1,758)
Common stock repurchased, shares		(270)
Tax benefit resulting from stock option exercises	1,518		1,518
Stock based compensation and related tax benefit	26,690		26,690
Ending balance at Dec. 31, 2011	$ 12,990,543	$ 198,459	$ 2,363,150	$ 10,428,934
Ending balance, shares at Dec. 31, 2011		1,984,587