Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2012	Dec. 31, 2011
Balance Sheets [Abstract]
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	82,862,796	67,573,775
Common stock, shares outstanding	82,862,796	67,576,775