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Note 9 - Basic and Diluted Earnings Per Common Share - Summary of Basic and Diluted Earnings Per Common Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Net loss for the period $ (22,772) $ (7,981) $ (72,823) $ (14,126)
Shares used in computing basic and diluted loss per common share (note 9) (in shares) 10,874,659 10,779,348 10,852,079 10,766,657
Effect of outstanding stock options (in shares) 0 0 0 0
Diluted weighted average number of shares outstanding (in shares) 10,874,659 10,779,348 10,852,079 10,766,657
Basic and diluted loss per common share (note 9) (in dollars per share) $ (2.09) $ (0.74) $ (6.71) $ (1.31)