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

Share Capital - Summary of Options Outstanding (Detail)

v3.20.2
Share Capital - Summary of Options Outstanding (Detail)
 6 Months Ended 12 Months Ended
Jun. 30, 2020
shares
$ / shares
Jun. 30, 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        
Number of Stock Options, Balance Ending 1,254,951 1,254,951    
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 25,765 25,765 35,719 35,719
Number of Stock Options, Expired/Forfeited (17,980) (17,980) (50,773) (50,773)
Number of Stock Options, Balance Ending 868,164 868,164 860,379 860,379
Weighted-average Exercise Price, Balance Beginning | $ / shares   $ 5.89   $ 18.20
Weighted-average Exercise Price, Granted | $ / shares   0.66   4.54
Weighted-average Exercise Price, Expired/Forfeited | $ / shares   24.55   31.79
Weighted-average Exercise Price, Balance Ending | $ / shares   $ 5.46   $ 5.89
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 843,693 843,693
Number of Stock Options, Expired/Forfeited (467,255) (467,255) (40,000) (40,000)
Number of Stock Options, Balance Ending 386,787 386,787 854,042 854,042
Weighted-average Exercise Price, Balance Beginning | $ / shares $ 2.65   $ 1.55  
Weighted-average Exercise Price, Granted | $ / shares   2.72  
Weighted-average Exercise Price, Expired/Forfeited | $ / shares 2.20   3.72  
Weighted-average Exercise Price, Balance Ending | $ / shares $ 3.19   $ 2.65