Quarterly report pursuant to Section 13 or 15(d)

Shareholders' Equity / (Deficit) - Reconciliation of the Company's Beginning and Ending Balances in Shareholders' Equity / (Deficit) (Details)

v3.21.2
Shareholders' Equity / (Deficit) - Reconciliation of the Company's Beginning and Ending Balances in Shareholders' Equity / (Deficit) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Equity [Abstract]          
Shareholders' equity (deficit), Beginning Balance     $ (50,559) $ (26,238) $ (26,238)
Share-based compensation expense     840 1,783  
Issuance of ordinary shares, net     68,161 2,564  
Issuance of warrants for ordinary shares     6,199 1,723  
Exercise of warrants for ordinary shares     15,289    
Issuance of ordinary shares on conversion of exchangeable notes     98,388    
Net loss $ 7,798 $ (12,521) (91,123) (28,621) (52,006)
Shareholders' equity (deficit), Ending Balance $ 47,195 $ (48,789) $ 47,195 $ (48,789) $ (50,559)