Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2011	Dec. 31, 2010
Statement of Financial Position [Abstract]
Series B Convertible preferred stock,par value	$ 0.01	$ 0.01
Series B Convertible preferred stock,authorized shares	20,500,000	20,500,000
Series B Convertible preferred stock,issued shares	20,416,228	20,416,228
Series B Convertible preferred stock,outstanding shares	17,916,228	17,916,228
Common stock,par value	$ 0.01	$ 0.01
Common stock,authorized shares	150,000,000	150,000,000
Common stock,issued shares	47,377,630	51,578,597
Common stock,outstanding shares	44,427,630	44,427,630