Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED BALANCE SHEETS (Parenthetical)

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CONSOLIDATED BALANCE SHEETS (Parenthetical)
$ in Thousands
Dec. 31, 2018
USD ($)
shares
Dec. 31, 2017
USD ($)
shares
CONSOLIDATED BALANCE SHEETS    
Allowance for doubtful accounts | $ $ 0 $ 0
Common stock, shares authorized 701,103,126 701,103,126
Common stock, shares issued 627,454,270 562,119,334
Common stock, shares outstanding 627,454,270 562,119,334