Stockholders' Equity (USD $)	Preferred Stock	Common Stock	Accumulated Deficit	Total
Beginning Balance, Amount at Dec. 31, 2009	$ 800,250	$ 23,074,160	$ (13,251,559)	$ 10,622,851
Beginning Balance, Shares at Dec. 31, 2009		19,412,499
Net income			310,313	310,313
Cumulative preferred dividends			(90,682)	(90,682)
Amortization of value of stock options		42,157		42,157
Cashless exercise of warrants, Shares		6,818
Ending Balance, Amount at Dec. 31, 2010	800,250	23,116,317	(13,031,928)	10,884,639
Ending Balance, Shares at Dec. 31, 2010		19,419,317
Net income			818,958	818,958
Cumulative preferred dividends			(99,000)	(99,000)
Amortization of value of stock options		105,659		105,659
Exercise of employee stock options, Shares		50,000
Exercise of employee stock options, Amount		18,000		18,000
Ending Balance, Amount at Dec. 31, 2011	800,250	23,239,976	(12,311,970)	11,728,256
Ending Balance, Shares at Dec. 31, 2011		19,469,317
Net income			624,143	624,143
Cumulative preferred dividends			(99,271)	(99,271)
Amortization of value of stock options		107,882		107,882
Exercise of employee stock options, Shares		47,272
Exercise of employee stock options, Amount		18,200		18,200
Ending Balance, Amount at Dec. 31, 2012	$ 800,250	$ 23,366,058	$ (11,787,098)	$ 12,379,210
Ending Balance, Shares at Dec. 31, 2012		19,516,589