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CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - $ / shares
shares in Thousands
Jun. 30, 2020
Dec. 31, 2019
CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited)    
Preferred stock, par value $ 0.0001 $ 0.0001
Preferred stock, shares authorized 5,000 5,000
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0
Common stock, par value $ 0.0001 $ 0.0001
Common stock, shares authorized 250,000 250,000
Common stock, shares issued 170,709 147,778
Common stock, shares outstanding 170,709 147,778