Condensed Balance Sheets (Parentheticals) (USD $)	Sep. 30, 2011	Dec. 31, 2010
Common stock par value (in Dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	250,000,000	250,000,000
Common stock, shares issued	45,502,933	45,921,640
Common stock, shares outstanding	45,502,933	45,921,640
Preferred Class A [Member]
Convertible preferred stock - par value (in Dollars per share)	$ 0.01	$ 0.01
Convertible preferred stock - shares authorized	150,000	150,000
Convertible preferred stock - shares issued	101,134	93,056
Convertible preferred stock - shares outstanding	101,134	93,056
Convertible preferred stock - liquidation preference (in Dollars)	$ 2,629,484	$ 2,629,484
Preferred Class B [Member]
Convertible preferred stock - par value (in Dollars per share)	$ 0.01	$ 0.01
Convertible preferred stock - shares authorized	125,000	125,000
Convertible preferred stock - shares issued	76,651	70,529
Convertible preferred stock - shares outstanding	76,651	70,529
Convertible preferred stock - liquidation preference (in Dollars)	1,303,067	1,303,067
PreferredClassCMember
Convertible preferred stock - par value (in Dollars per share)	$ 0.01	$ 0.01
Convertible preferred stock - shares authorized	200,000	150,000
Convertible preferred stock - shares issued	134,774	124,010
Convertible preferred stock - shares outstanding	134,774	124,010
Convertible preferred stock - liquidation preference (in Dollars)	$ 889,508	$ 889,508