CONDENSED BALANCE SHEETS (Parenthetical) (USD $)	Jun. 30, 2011	Dec. 31, 2010
Preferred stock, no par value
Preferred stock, shares authorized	5,000,000	5,000,000
Common stock, no par value
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	55,339,962	52,957,787
Common stock, shares outstanding	55,339,962	52,957,787
Series A convertible preferred stock
Preferred stock, shares designated	25,000	25,000
Preferred stock, shares issued	18,158	18,158
Preferred stock shares surrendered	18,158	18,158
Preferred stock, shares outstanding	0	0