Quarterly report pursuant to Section 13 or 15(d)

Share Capital - Summary Of Option Activity (Detail)

v3.21.2
Share Capital - Summary Of Option Activity (Detail) - $ / shares
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2021
Sep. 30, 2021
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted units 0 0  
Stock Option [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Beginning balance outstanding   11,510 19,578
Granted units   0 135
Exercised units   0 0
Forfeited/Expired units   (967) (8,203)
Ending balance outstanding 10,543 10,543 11,510
Weighted average exercise price beginning balance   $ 4.86 $ 4.80
Weighted average exercise price granted   0.82
Weighted average exercise price exercised  
Weighted average exercise price forfeited/expired   3.99 4.99
Weighted average exercise price ending balance $ 4.94 $ 4.94 $ 4.86
Weighted average contractual life   6 years 2 months 19 days 7 years 4 months 2 days