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Note 9 - Basic and Diluted Earnings (Loss) Per Common Share - Summary of Basic and Diluted Earnings Per Common Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Net loss for the period $ (18,604) $ (30,968) $ (45,088) $ (50,051)
Shares used in computing basic and diluted loss per common share (note 9) (in shares) 10,954,596 10,836,652 10,939,098 10,821,608
Effect of outstanding stock options (in shares) 0 0 0 0
Diluted weighted average number of shares outstanding (in shares) 10,954,596 10,836,652 10,939,098 10,821,608
Basic and diluted loss per common share (note 9) (in dollars per share) $ (1.7) $ (2.86) $ (4.12) $ (4.63)