Quarterly report pursuant to Section 13 or 15(d)

UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical)

v3.21.2
UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical)
$ in Thousands
Jun. 30, 2021
USD ($)
shares
Jun. 30, 2021
£ / shares
Dec. 31, 2020
USD ($)
shares
Dec. 31, 2020
£ / shares
UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS        
Property, plant and equipment, accumulated depreciation | $ $ 34,360   $ 31,097  
Allowance for doubtful accounts | $ $ 0   $ 0  
Common stock, par value | £ / shares   £ 0.001   £ 0.001
Common stock, shares authorized 1,240,853,520   1,038,249,630  
Common stock, shares issued 936,237,126   928,754,958  
Common stock, shares outstanding 936,237,126   928,754,958