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Shareholders Equity - Share Purchase Warrants and Deferred share unit plan (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2023
USD ($)
EquityInstruments
Dec. 31, 2022
USD ($)
EquityInstruments
Stock-based payments    
Number of other equity instruments outstanding in share-based payment arrangement at beginning of period 102,104  
Number of other equity instruments outstanding in share-based payment arrangement at end of period 102,104 102,104
DSU plan    
Stock-based payments    
Number of other equity instruments outstanding in share-based payment arrangement at beginning of period 110,128 107,635
Granted 11,816 14,703
Settled (2,515) (12,210)
Number of other equity instruments outstanding in share-based payment arrangement at end of period 119,429 110,128
DSU liability | $ $ 13.3 $ 15.0