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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 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Net income/(loss) for the period $ (30,968) $ (3,125) $ (50,051) $ (6,145)
Shares used in computing basic and diluted loss per common share (note 9) (in shares) 10,836,652 10,765,595 10,821,608 10,758,691
Effect of outstanding stock options (in shares) 0 0 0 0
Diluted weighted average number of shares outstanding (in shares) 10,836,652 10,765,595 10,821,608 10,758,691
Basic and diluted loss per common share (note 9) (in dollars per share) $ (2.86) $ (0.29) $ (4.63) $ (0.57)