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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Revenues:    
Revenues $ 0 $ 0
Operating expenses:    
Research and development 4,954 2,566
General and administrative 1,605 1,739
Total operating expenses 6,559 4,305
Operating loss (6,559) (4,305)
Other income (expense):    
Foreign exchange gains (losses) 29 10
Interest income 4 4
Other income, net 1,280 126
Total other income, net 1,313 140
Loss before taxes (5,246) (4,165)
Income tax benefit 1,138 687
Net loss (4,108) (3,478)
Dividend on convertible exchangeable preferred shares (50) (50)
Net loss applicable to common shareholders $ (4,158) $ (3,528)
Basic and diluted earnings per common share:    
Net loss per share - basic $ (0.42) $ (0.50)
Net loss per share - diluted $ (0.42) $ (0.50)
Weighted average common shares outstanding basic 9,993,135 7,009,037
Weighted average common shares outstanding diluted 9,993,135 7,009,037