XML 121 R86.htm IDEA: XBRL DOCUMENT v3.20.4
Shareholders' equity - Restricted stock unit (Details)
$ in Millions
12 Months Ended
Dec. 31, 2020
USD ($)
EquityInstruments
Dec. 31, 2019
USD ($)
EquityInstruments
Restricted Share Units    
Stock-based payments    
Fair value of RSUs granted $ 5.0 $ 3.9
Number of trading days immediately preceding the date of conversion or award grant for determining fair value 5 days  
Stock-based compensation expenses $ 3.4 2.6
Capitalised to royalty, stream and working interest 0.1 0.6
Total unrecognized non-cash stock-based compensation expense $ 7.7 $ 6.4
Expected to be recognized over weighted average period 2 years 1 month 6 days 2 years 1 month 6 days
Performance based RSU    
Stock-based payments    
Granted | EquityInstruments 22,519 20,153
Time-based RSU    
Stock-based payments    
Granted | EquityInstruments 14,546 19,863