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Common Shares - Summary Of Deferred Share Units Activity (Details)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2023
USD ($)
$ / shares
shares
Jun. 30, 2022
USD ($)
Jun. 30, 2023
USD ($)
$ / shares
shares
Jun. 30, 2022
USD ($)
$ / shares
shares
Dec. 31, 2022
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Allocated Share-based Compensation Expense | $ $ 248 $ 112 $ 427 $ 556  
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     1,254,000 930,000 930,000
Granted, Number of units (in shares) | shares     420,000 324,000 324,000
Shares issued to participants | shares     (485,000)    
Unvested, Number of units, end of period (in shares) | shares 1,189,000   1,189,000   1,254,000
Outstanding, weighted average fair value, beginning of period (in dollars per share) | $ / shares     $ 0.72 $ 0.68 $ 0.68
Granted, Weighted average fair value (in dollars per share) | $ / shares     0.58   0.84
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 $ 0.68   $ 0.68   $ 0.72
Allocated Share-based Compensation Expense | $ $ 141   $ 244 $ 272