BALANCE SHEETS (Parentheticals) (USD $)	Jun. 30, 2011	Dec. 31, 2010
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	10,794,718	10,762,099
Common stock, shares outstanding	10,307,350	10,274,731
Common Stock, no par value (in Dollars per share)	$ 0	$ 0
Convertible Preferred Stock, shares authorized	147,500	147,500
Convertible Preferred Stock, shares issued	52,784	52,784
Convertible Preferred Stock, shares outstanding	52,784	52,784
Convertible preferred stock, Series AA, no par value (in Dollars per share)	$ 0	$ 0
Treasury stock, shares	32,619	32,619