Annual reports filed by certain Canadian issuers pursuant to Section 15(d) and Rule 15d-4

SHARE CAPITAL - Summary of Options Outstanding (Detail)

v3.21.1
SHARE CAPITAL - Summary of Options Outstanding (Detail)
 12 Months Ended
Dec. 31, 2020
shares
$ / shares
Dec. 31, 2020
shares
$ / shares
Dec. 31, 2019
shares
$ / shares
Dec. 31, 2019
shares
$ / shares
Disclosure of terms and conditions of share-based payment arrangement [line items]        
Number of Stock Options, Balance Beginning 1,219,276 1,219,276    
Number of Stock Options, Granted 2,136,015 2,136,015    
Number of Stock Options, Balance Ending 2,131,716 2,131,716 1,219,276 1,219,276
US Dollar [Member]        
Disclosure of terms and conditions of share-based payment arrangement [line items]        
Number of Stock Options, Balance Beginning 854,042 854,042 50,349 50,349
Number of Stock Options, Granted 1,997,291 1,997,291 843,693 843,693
Number of Stock Options, Expired/Forfeited (761,528) (761,528) (40,000) (40,000)
Number of Stock Options, Balance Ending 2,089,805 2,089,805 854,042 854,042
Weighted-average Exercise Price, Balance Beginning | $ / shares   $ 2.65   $ 1.55
Weighted-average Exercise Price, Granted | $ / shares   0.96   2.72
Weighted-average Exercise Price, Expired/Forfeited | $ / shares   2.66   3.72
Weighted-average Exercise Price, Balance Ending | $ / shares   $ 1.13   $ 2.65
Canadian Dollar [Member]        
Disclosure of terms and conditions of share-based payment arrangement [line items]        
Number of Stock Options, Balance Beginning 860,379 860,379 875,433 875,433
Number of Stock Options, Granted 79,494 79,494 35,719 35,719
Number of Stock Options, Expired/Forfeited (105,908) (105,908) (50,773) (50,773)
Number of Stock Options, Balance Ending 833,965 833,965 860,379 860,379
Weighted-average Exercise Price, Balance Beginning | $ / shares $ 5.89   $ 18.20  
Weighted-average Exercise Price, Granted | $ / shares 0.99   4.54  
Weighted-average Exercise Price, Expired/Forfeited | $ / shares 8.39   31.79  
Weighted-average Exercise Price, Balance Ending | $ / shares $ 5.10   $ 5.89