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Note 8 - 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
Mar. 31, 2023
Mar. 31, 2022
Net income/(loss) for the period $ (19,083) $ (3,020)
Shares used in computing basic loss per common share (note 8) (in shares) 10,806,321 10,754,758
Effect of outstanding stock options (in shares) 0 0
Diluted weighted average number of shares outstanding (in shares) 10,806,321 10,754,758
Basic loss per common share (note 8) (in dollars per share) $ (1.77) $ (0.28)
Diluted loss per common share (note 8) (in dollars per share) $ (1.77) $ (0.28)