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Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($)
$ in Thousands
Total
2020 Employee Share Purchase Plan
Common Shares
Common Shares
2020 Employee Share Purchase Plan
Additional Paid-in Capital
Additional Paid-in Capital
2020 Employee Share Purchase Plan
Accumulated Other Comprehensive Loss
Accumulated Deficit
Balance at Dec. 31, 2021 $ 288,421   $ 480,699   $ 17,988     $ (210,266)
Balance, Shares at Dec. 31, 2021     41,850,162          
Exercise of stock options 28   $ 46   (18)      
Exercise of stock options, Shares     12,235          
Share-based compensation expense 4,755       4,755      
Issuance of common shares under the 2020 Employee Share Purchase Plan   $ 213   $ 303   $ (90)    
Issuance of common shares under the 2020 Employee Share Purchase Plan, Shares       16,807        
Net loss and comprehensive loss (34,757)             (34,757)
Balance at Mar. 31, 2022 258,660   $ 481,048   22,635     (245,023)
Balance, Shares at Mar. 31, 2022     41,879,204          
Exercise of stock options 205   $ 332   (127)      
Exercise of stock options, Shares     44,268          
Share-based compensation expense 4,745       4,745      
Net loss and comprehensive loss (38,093)             (38,093)
Balance at Jun. 30, 2022 225,517   $ 481,380   27,253     (283,116)
Balance, Shares at Jun. 30, 2022     41,923,472          
Balance at Dec. 31, 2022 279,517   $ 482,032   37,226   $ (428) (239,313)
Balance, Shares at Dec. 31, 2022     42,036,193          
Exercise of stock options 4   $ 7   (3)      
Exercise of stock options, Shares     2,000          
Share-based compensation expense 6,062       6,062      
Issuance of common shares under the 2020 Employee Share Purchase Plan   $ 409   $ 638   $ (229)    
Issuance of common shares under the 2020 Employee Share Purchase Plan, Shares       41,703        
Other comprehensive gain (loss) 193           193  
Net loss (34,941)             (34,941)
Balance at Mar. 31, 2023 251,244   $ 482,677   43,056   (235) (274,254)
Balance, Shares at Mar. 31, 2023     42,079,896          
Balance at Dec. 31, 2022 $ 279,517   $ 482,032   37,226   (428) (239,313)
Balance, Shares at Dec. 31, 2022     42,036,193          
Exercise of stock options, Shares 16,050              
Balance at Jun. 30, 2023 $ 245,414   $ 482,739   49,299   (424) (286,200)
Balance, Shares at Jun. 30, 2023     42,093,946          
Balance at Mar. 31, 2023 251,244   $ 482,677   43,056   (235) (274,254)
Balance, Shares at Mar. 31, 2023     42,079,896          
Exercise of stock options 40   $ 62   (22)      
Exercise of stock options, Shares     14,050          
Share-based compensation expense 6,265       6,265      
Other comprehensive gain (loss) (189)           (189)  
Net loss (11,946)             (11,946)
Balance at Jun. 30, 2023 $ 245,414   $ 482,739   $ 49,299   $ (424) $ (286,200)
Balance, Shares at Jun. 30, 2023     42,093,946