XML 118 R103.htm IDEA: XBRL DOCUMENT v3.23.1
Stock options (Details) - Stock Options - $ / shares
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Number of options      
Outstanding, beginning of year 85,000 51,000 51,000
Granted 80,000    
Cancelled (41,250)    
Bonus shares adjustment 82,500 34,000  
Outstanding, end of year 206,250 85,000 51,000
Exercisable, end of year 86,250    
Weighted average exercise price      
Outstanding, beginning of years $ 1.56 $ 2.60 $ 2.60
Weighted average exercise price, Granted 2.8 0 0
Cancelled in period (1.04) 0 0
Bonus shares adjustments (0.72) (1.04) 0
Outstanding, end of years 1.52 1.56 2.60
Exercisable, end of years $ 1.04 $ 0 $ 0