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Condensed Consolidated Statement of Changes in Stockholders' Equity - USD ($)
$ in Thousands
Total
Common Stock
Treasury Shares
Additional Paid-in Capital
Accumulated Deficit
Balance, Treasury Shares (in shares)     (7,986,831)    
Balance at Dec. 31, 2022 $ 595,333 $ 299,002 $ (61,770) $ 1,885,352 $ (1,527,251)
Balance (in shares) at Dec. 31, 2022   412,333,087      
Exercise of stock options $ 1,871 $ 744   1,127  
Exercise of stock options (in shares) 1,232,263 1,232,263      
Vesting of restricted stock units $ (1,507) $ 1,539 $ (1,507) (1,539)  
Vesting of restricted stock units (in shares)   2,514,948 (827,523)    
Stock-based compensation 5,556     5,556  
Loss for the period (16,460)       (16,460)
Balance at Mar. 31, 2023 $ 584,793 $ 301,285 $ (63,277) 1,890,496 (1,543,711)
Balance (in shares) at Mar. 31, 2023   416,080,298      
Balance, Treasury Shares (in shares)     (8,814,354)    
Balance, Treasury Shares (in shares) 9,317,202   (9,317,202)    
Balance at Dec. 31, 2023 $ 552,097 $ 302,756 $ (63,752) 1,899,456 (1,586,363)
Balance (in shares) at Dec. 31, 2023   418,141,295      
Exercise of stock options $ 10 $ 6   4  
Exercise of stock options (in shares) 9,500 9,500      
Vesting of restricted stock units $ (1,436) $ 1,980 $ (1,436) (1,980)  
Vesting of restricted stock units (in shares)   3,119,637 (1,217,450)    
Stock-based compensation 5,218     5,218  
Loss for the period (9,953)       (9,953)
Balance at Mar. 31, 2024 $ 545,936 $ 304,742 $ (65,188) $ 1,902,698 $ (1,596,316)
Balance (in shares) at Mar. 31, 2024   421,270,432      
Balance, Treasury Shares (in shares) 10,534,652   (10,534,652)