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

Subsequent events - Additional Information (Details)

v3.20.2
Subsequent events - Additional Information (Details)
 1 Months Ended 6 Months Ended
Jul. 31, 2020
USD ($)
shares
Jul. 30, 2020
shares
$ / shares
Jan. 28, 2020
shares
$ / shares
Jun. 30, 2020
shares
Dec. 31, 2019
shares
Mar. 31, 2019
shares
Statement Line Items [Line Items]            
Common shares issued upon exercise of warrants       3,750,000 1,018,506 1,018,506
Contractual Life       4 years 1 month 9 days    
Director [Member]            
Statement Line Items [Line Items]            
Options issued     25,765      
Exercise prices/option | $ / shares     $ 0.657      
Contractual Life     7 years      
Events After Reporting Period [Member]            
Statement Line Items [Line Items]            
Common shares issued upon exercise of warrants 2,442,939          
Proceeds from warrant exercised | $ $ 733,370          
Common share issued upon conversion of common shares 3,500,000          
Proceeds from conversion of shares | $ $ 350          
Events After Reporting Period [Member] | Director [Member]            
Statement Line Items [Line Items]            
Options issued   22,425        
Exercise prices/option | $ / shares   $ 1.266        
Contractual Life   7 years        
Events After Reporting Period [Member] | Employees [Member]            
Statement Line Items [Line Items]            
Options issued   1,350,000        
Exercise prices/option | $ / shares   $ 0.962        
Option vesting annually   25.00%        
Contractual Life   4 years