CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Sep. 30, 2012	Dec. 31, 2011
Preferred stock, par value	$ 0.0001	$ 0.0001	[1]
Preferred stock, shares authorized	5,000,000	5,000,000	[1]
Preferred stock, shares issued			[1]
Preferred stock, shares outstanding			[1]
Common stock, par value	$ 0.0001	$ 0.0001	[1]
Common stock, shares authorized	150,000,000	150,000,000	[1]
Common stock, shares issued	56,589,443	52,898,659	[1]
Common stock, shares outstanding	56,589,443	52,898,659	[1]

[1] The condensed consolidated balance sheet at December 31, 2011 has been derived from the audited financial statements at that date but does not include all of the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements.