Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED BALANCE SHEETS (Parentheticals)

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CONSOLIDATED BALANCE SHEETS (Parentheticals) - $ / shares
Dec. 31, 2019
Dec. 31, 2018
Statement Of Financial Position [Abstract]    
Preferred stock (in dollars per share) $ 0.001 $ 0.001
Preferred stock, shares authorized 20,000,000 20,000,000
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 500,000,000 500,000,000
Common stock, shares issued 182,895,247 133,907,747
Common stock, shares outstanding 182,895,247 133,907,747