Registration statement for securities of certain foreign private issuers

Share Capital - Summary of Inputs Used in Measurement of Fair Values at Grant Date of Share Based Option Plan (Detail)

v3.20.1
Share Capital - Summary of Inputs Used in Measurement of Fair Values at Grant Date of Share Based Option Plan (Detail)
3 Months Ended 12 Months Ended
Mar. 31, 2020
CAD ($)
yr
$ / shares
Dec. 31, 2019
CAD ($)
yr
$ / shares
Dec. 31, 2019
$ / shares
Dec. 31, 2018
CAD ($)
yr
$ / shares
Disclosure of fair value measurement of equity [line items]        
Expected Option Life | yr   3.5    
US Dollar [Member]        
Disclosure of fair value measurement of equity [line items]        
Fair Value calculated     $ 1.48  
Share price at grant     2.36  
Exercise price     $ 2.72  
Risk free interest rate (based on government bonds)   1.50%    
Expected Volatility   97.90%    
Expected dividends | $      
Canadian Dollar [Member]        
Disclosure of fair value measurement of equity [line items]        
Fair Value calculated $ 0.43 $ 1.61   $ 5.99
Share price at grant 0.62 2.90   10.79
Exercise price $ 0.66 $ 4.54   $ 11.97
Expected Option Life | yr 3.5 3.4   3
Risk free interest rate (based on government bonds) 1.41% 1.43%   1.90%
Expected Volatility 109.00% 98.10%   90.12%
Expected dividends | $