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Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares
Jun. 30, 2018
Dec. 31, 2017
Dec. 31, 2016
Preferred stock, shares authorized 20,000,000 20,000,000 20,000,000
Preferred stock, par value $ 0.001 $ 0.001 $ 0.001
Common stock, shares authorized 975,000,000 975,000,000 975,000,000
Common stock, par value $ 0.001 $ 0.001 $ 0.001
Common stock, shares issued 372,337,169 363,043,769 16,095,929
Common stock, shares outstanding 372,337,169 363,043,769 16,095,929
Treasury stock, shares   0 216,667
Series B Convertible Preferred Stock [Member]      
Preferred stock, shares issued 0 25,877 0
Preferred stock, shares outstanding 0 25,877 0
Preferred stock, liquidation preference per share $ 0.001 $ 0.001 $ 0.001
Series C-1 Convertible Preferred Stock [Member]      
Preferred stock, shares issued 29,414 50,004 0
Preferred stock, shares outstanding 29,414 50,004 0
Preferred stock, liquidation preference per share $ 0.001 $ 0.001 $ 0.001