Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Warrant Liability - Summary of Warrant Liability (Detail)

v3.20.1
Warrant Liability - Summary of Warrant Liability (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Disclosure of classes of share capital [line items]    
Number of Warrants, Opening Balance 13,901,859 4,933,231
Number of Warrants, exercised (1,018,506) (6,500)
Number of Warrants, expired (135,824)  
Number of Warrants, Ending Balance 21,203,411 13,901,859
Warrant liability, Opening Balance $ 11,250,167 $ 17,849,460
Warrant liability, exercised (3,742,824) (28,949)
Warrant liability, expired 0 0
Warrant liability, Foreign exhange adjustment during the year 17,687 (984,462)
Warrant liability, Fair value adjustment during the year (19,800,645) (17,095,220)
Warrant liability, Ending Balance $ 3,621,444 $ 11,250,167
Issue of warrants expiring, April 10, 2023 [member]    
Disclosure of classes of share capital [line items]    
Number of Warrants, expiring   1,295,554
Warrant liability, expiring   $ 5,212,087
Issue of warrants expiring, August 10, 2023 [member]    
Disclosure of classes of share capital [line items]    
Number of Warrants, expiring   7,679,574
Warrant liability, expiring   $ 6,297,251
Issue of warrants expiring, March 21, 2024 [member]    
Disclosure of classes of share capital [line items]    
Number of Warrants, expiring 8,455,882  
Warrant liability, expiring $ 15,897,059