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

Share Capital - Summary of Weighted-Average Remaining Contractual Life and Weighted-Average Exercise Price Options Outstanding and Options Exercisable on Exercise Prices (Detail)

v3.20.1
Share Capital - Summary of Weighted-Average Remaining Contractual Life and Weighted-Average Exercise Price Options Outstanding and Options Exercisable on Exercise Prices (Detail)
 12 Months Ended
Dec. 31, 2019
shares
$ / shares
Dec. 31, 2019
shares
$ / shares
Dec. 31, 2018
shares
Dec. 31, 2017
shares
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]        
Options Outstanding, Number Outstanding 1,714,421 1,714,421    
Weighted average remaining contractual life of outstanding share options 5 years 3 months 25 days      
Options Outstanding, Options Exercisable 663,853 663,853    
Canadian Dollar [Member]        
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]        
Options Outstanding, Number Outstanding 860,379 860,379 875,433 591,609
Weighted average remaining contractual life of outstanding share options 4 years 4 months 13 days      
Options Outstanding, Options Exercisable 414,066 414,066    
Canadian Dollar [Member] | $3.28 [member]        
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]        
Exercise prices/option | $ / shares $ 3.28      
Options Outstanding, Number Outstanding 31,498 31,498    
Weighted average remaining contractual life of outstanding share options 5 years 8 months 1 day      
Options Outstanding, Options Exercisable 31,498 31,498    
Canadian Dollar [Member] | $4.50 [member]        
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]        
Exercise prices/option | $ / shares $ 4.50      
Options Outstanding, Number Outstanding 18,936 18,936    
Weighted average remaining contractual life of outstanding share options 3 years 3 months 10 days      
Options Outstanding, Options Exercisable 18,936 18,936    
Canadian Dollar [Member] | $4.54 [member]        
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]        
Exercise prices/option | $ / shares $ 4.54      
Options Outstanding, Number Outstanding 743,122 743,122    
Weighted average remaining contractual life of outstanding share options 6 years 9 months 3 days      
Options Outstanding, Options Exercisable 296,807 296,807    
Canadian Dollar [Member] | $4.80 [member]        
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]        
Exercise prices/option | $ / shares $ 4.80      
Options Outstanding, Number Outstanding 3,040 3,040    
Weighted average remaining contractual life of outstanding share options 8 months 15 days      
Options Outstanding, Options Exercisable 3,040 3,040    
Canadian Dollar [Member] | $7.49 [member]        
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]        
Exercise prices/option | $ / shares $ 7.49      
Options Outstanding, Number Outstanding 5,590 5,590    
Weighted average remaining contractual life of outstanding share options 5 years 6 months 7 days      
Options Outstanding, Options Exercisable 5,590 5,590    
Canadian Dollar [Member] | $9.00 [member]        
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]        
Exercise prices/option | $ / shares $ 9.00      
Options Outstanding, Number Outstanding 11,481 11,481    
Weighted average remaining contractual life of outstanding share options 5 years 6 months 7 days      
Options Outstanding, Options Exercisable 11,481 11,481    
Canadian Dollar [Member] | $9.60 [member]        
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]        
Exercise prices/option | $ / shares $ 9.60      
Options Outstanding, Number Outstanding 1,105 1,105    
Weighted average remaining contractual life of outstanding share options 9 months 7 days      
Options Outstanding, Options Exercisable 1,105 1,105    
Canadian Dollar [Member] | $11.70 [member]        
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]        
Exercise prices/option | $ / shares $ 11.70      
Options Outstanding, Number Outstanding 6,667 6,667    
Weighted average remaining contractual life of outstanding share options 11 months 8 days      
Options Outstanding, Options Exercisable 6,667 6,667    
Canadian Dollar [Member] | $12.00 [member]        
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]        
Exercise prices/option | $ / shares $ 12.00      
Options Outstanding, Number Outstanding 1,948 1,948    
Weighted average remaining contractual life of outstanding share options 11 months 4 days      
Options Outstanding, Options Exercisable 1,948 1,948    
Canadian Dollar [Member] | $30.00 [member]        
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]        
Exercise prices/option | $ / shares $ 30.00      
Options Outstanding, Number Outstanding 28,260 28,260    
Weighted average remaining contractual life of outstanding share options 1 year 7 months 24 days      
Options Outstanding, Options Exercisable 28,260 28,260    
Canadian Dollar [Member] | $30.60 [member]        
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]        
Exercise prices/option | $ / shares $ 30.60      
Options Outstanding, Number Outstanding 2,096 2,096    
Weighted average remaining contractual life of outstanding share options 11 months 23 days      
Options Outstanding, Options Exercisable 2,096 2,096    
Canadian Dollar [Member] | $32.40 [member]        
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]        
Exercise prices/option | $ / shares $ 32.40      
Options Outstanding, Number Outstanding 810 810    
Weighted average remaining contractual life of outstanding share options 1 year 29 days      
Options Outstanding, Options Exercisable 810 810    
Canadian Dollar [Member] | $45.30 [member]        
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]        
Exercise prices/option | $ / shares $ 45.30      
Options Outstanding, Number Outstanding 560 560    
Weighted average remaining contractual life of outstanding share options 7 months 9 days      
Options Outstanding, Options Exercisable 560 560    
Canadian Dollar [Member] | $51.60 [member]        
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]        
Exercise prices/option | $ / shares $ 51.60      
Options Outstanding, Number Outstanding 5,266 5,266    
Weighted average remaining contractual life of outstanding share options 5 months 8 days      
Options Outstanding, Options Exercisable 5,268 5,268    
US Dollar [Member]        
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]        
Options Outstanding, Number Outstanding 854,042 854,042 50,349  
Weighted average remaining contractual life of outstanding share options 6 years 3 months 10 days      
Options Outstanding, Options Exercisable 249,787 249,787    
US Dollar [Member] | $1.55 [member]        
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]        
Exercise prices/option | $ / shares   $ 1.55    
Options Outstanding, Number Outstanding 50,349 50,349    
Weighted average remaining contractual life of outstanding share options 1 year 11 months 19 days      
Options Outstanding, Options Exercisable 50,349 50,349    
US Dollar [Member] | $2.20 [member]        
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]        
Exercise prices/option | $ / shares   $ 2.20    
Options Outstanding, Number Outstanding 469,420 469,420    
Weighted average remaining contractual life of outstanding share options 6 years 6 months 10 days      
Options Outstanding, Options Exercisable 2,165 2,165    
US Dollar [Member] | $3.40 [member]        
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]        
Exercise prices/option | $ / shares   $ 3.40    
Options Outstanding, Number Outstanding 294,273 294,273    
Weighted average remaining contractual life of outstanding share options 6 years 4 months 13 days      
Options Outstanding, Options Exercisable 197,273 197,273    
US Dollar [Member] | $3.72 [member]        
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]        
Exercise prices/option | $ / shares   $ 3.72    
Options Outstanding, Number Outstanding 40,000 40,000    
Weighted average remaining contractual life of outstanding share options 2 years 8 months 8 days      
Options Outstanding, Options Exercisable 0 0