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Condensed Consolidated Statements of Operations - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Operating expenses:        
Research and development $ 846 $ 1,242 $ 3,414 $ 4,458
General and administrative 7,053 2,931 13,040 8,558
Loss from operations (7,899) (4,173) (16,454) (13,016)
Other (expense)/income        
Unrealized foreign exchange loss (4) (1) (6) (9)
Amortization expense (64) (8) (79) (8)
Unrealized (loss)/gain on securities (27) 39 (126) 137
Interest income 24 13 42 41
Interest expense (119) (55) (234) (64)
Total other (expense)/income (190) (12) (403) 97
Net loss $ (8,089) $ (4,185) $ (16,857) $ (12,919)
Basic net loss per common share $ (0.31) $ (0.16) $ (0.65) $ (0.50)
Diluted net loss per common share $ (0.31) $ (0.16) $ (0.65) $ (0.50)
Weighted-average number of common shares outstanding basic 26,108 26,007 26,105 26,004
Weighted-average number of common shares outstanding diluted 26,108 26,007 26,105 26,004