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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares
Jun. 30, 2016
Dec. 31, 2015
Statement of Financial Position [Abstract]    
Preferred stock, par value (usd per share) $ 0.0001 $ 0.0001
Preferred stock, shares authorized 5,000,000 5,000,000
Common stock, par value (usd per share) $ 0.0001 $ 0.0001
Common stock, shares authorized 275,000,000 275,000,000
Common stock, shares issued 182,512,117 162,581,753
Common stock, shares outstanding 181,837,117 161,906,753
Treasury stock, shares 675,000 675,000