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Consolidated Balance Sheets [Parenthetical] (USD $)
Mar. 31, 2013
Dec. 31, 2012
Preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Preferred stock, shares authorized 10,000,000 10,000,000
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0
Common stock, par value (in dollars per share) $ 0.001 $ 0.001
Common stock, shares authorized 750,000,000 750,000,000
Common stock, share issued 432,917,400 429,167,400
Common stock, shares outstanding 426,834,067 425,167,400
Deferred Compensation Arrangement with Individual, Shares Authorized for Issuance 6,083,333 4,000,000