Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Convertible preferred stock - shares authorized	2,000,000	2,000,000
Convertible preferred stock - shares outstanding	369,179	346,910
Common stock par value	$ 0.01	$ 0.01
Common stock, shares authorized	250,000,000	250,000,000
Common stock, shares issued	51,693,124	46,626,377
Common stock, shares outstanding	51,693,124	46,626,377
Treasury stock shares	100,000	100,000
Preferred Class A
Convertible preferred stock - par value	$ 0.01	$ 0.01
Convertible preferred stock - shares authorized	150,000	150,000
Convertible preferred stock - shares issued	119,455	112,249
Convertible preferred stock - shares outstanding	119,455	112,249
Convertible preferred stock - liquidation preference	$ 3,171,818	$ 2,918,474
Preferred Class B
Convertible preferred stock - par value	$ 0.01	$ 0.01
Convertible preferred stock - shares authorized	125,000	125,000
Convertible preferred stock - shares issued	90,535	85,075
Convertible preferred stock - shares outstanding	90,535	85,075
Convertible preferred stock - liquidation preference	1,571,803	1,446,275
Preferred Class C
Convertible preferred stock - par value	$ 0.01	$ 0.01
Convertible preferred stock - shares authorized	200,000	200,000
Convertible preferred stock - shares issued	159,189	149,586
Convertible preferred stock - shares outstanding	159,189	149,586
Convertible preferred stock - liquidation preference	$ 1,072,975	$ 987,268