Current report of foreign issuer pursuant to Rules 13a-16 and 15d-16 Amendments

WARRANT DERIVATIVE LIABILITY - Summary of Warrant Derivative Liability (Detail)

v3.21.2
WARRANT DERIVATIVE LIABILITY - Summary of Warrant Derivative Liability (Detail)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2021
USD ($)
shares
Jun. 30, 2021
USD ($)
shares
Warrant Derivative Liability - Summary Of Warrant Derivative Liability    
Number of Warrants, Opening Balance | shares 19,592,392 28,969,670
Number of Warrants, Exercised | shares (8,000,000) (8,000,000)
Number of Warrants, Expired | shares (1,377,278)
Number of Warrants, Foreign exchange adjustment
Number of Warrants, Fair value adjustment
Number of Warrants, Ending Balance | shares 19,592,392 19,592,392
Fair value derivative warrant liability, Opening Balance $ 23,649 $ 36,317
Fair value derivative warrant liability, Exercised   (15,722)
Fair value derivative warrant liability, Items that were classified to net loss:    
Fair value derivative warrant liability, Expired (120)
Fair value derivative warrant liability, Foreign exchange adjustment during the period 43
Fair value derivative warrant liability, Fair value adjustment during the period (1,060) 2,071
Fair value derivative warrant liability, (Gain) loss on fair value of warrant derivative (1,060) 1,994
Fair value derivative warrant liability, Ending Balance $ 22,589 $ 22,589