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Common Shares - Summary Of Deferred Share Units Activity (Details)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2024
USD ($)
$ / shares
shares
Mar. 31, 2023
USD ($)
$ / shares
shares
Dec. 31, 2023
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Allocated Share-based Compensation Expense | $ $ 291 $ 179  
Deferred Stock Units (DSU) [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of common shares issues for each DSU (at end of board members' team). 1    
Unvested, Number of units, beginning of period (in shares) | shares 1,189,000 1,254,000 1,254,000
Granted, Number of units (in shares) | shares 612,000 197,000 420,000
Shares issued to participants | shares     (485,000)
Unvested, Number of units, end of period (in shares) | shares 1,801,000   1,189,000
Outstanding, weighted average fair value, beginning of period (in dollars per share) | $ / shares $ 0.68 $ 0.72 $ 0.72
Granted, Weighted average fair value (in dollars per share) | $ / shares 0.34   0.58
Shares issued to participants, Weighted average grant-date fair value (in dollars per share) | $ / shares     0.69
Unvested, weighted average fair value, end of period (in dollars per share) | $ / shares $ 0.57   $ 0.68
Allocated Share-based Compensation Expense | $ $ 208 $ 103