Quarterly report pursuant to Section 13 or 15(d)

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

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Shareholders' Equity - Reconciliation of the Company's Beginning and Ending Balances in Shareholders' Equity / (Deficit) (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2020
Equity [Abstract]      
Shareholders' equity (deficit), Beginning Balance $ 50,234 $ 50,559  
Share-based compensation expense 1,895 281  
Issuance of ordinary shares, net 6 68,156  
Issuance of warrants for ordinary shares   6,199  
Exercise of warrants for ordinary shares   14,257  
Issuance of ordinary shares on conversion of exchangeable notes   92,104  
Net loss (3,500) (98,921) $ (91,564)
Shareholders' equity (deficit), Ending Balance $ 48,635 $ 31,517 $ 50,559