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Condensed Consolidated Statement of Changes in Stockholders' Equity - USD ($) $ in Thousands | Total | Common Shares | 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 |  |  |
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 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 (in shares) | 1,239,763 |  |  |  |
Loss for the period | $ (53,331) |  |  |  |
Balance at Sep. 30, 2023 | 553,148 | $ 302,318 | $ (63,743) | 1,895,155 | (1,580,582)
Balance (in shares) at Sep. 30, 2023 |  | 417,744,958 |  |  |
Balance, Treasury Shares (in shares) |  |  | (8,814,354) |  |
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 |  |  |
Exercise of stock options | 7 | $ 4 |  | 3 |
Exercise of stock options (in shares) |  | 6,000 |  |  |
Vesting of restricted stock units | (187) | $ 490 | $ (187) | (490) |
Vesting of restricted stock units (in shares) |  | 800,242 | (144,240) |  |
Issuance of common stock under employee stock purchase plan | 240 | $ 127 |  | 113 |
Issuance of common stock under employee stock purchase plan (in shares) |  | 205,861 |  |  |
Stock-based compensation | 1,835 |  |  | 1,835 |
Loss for the period | (17,560) |  |  |  | (17,560)
Balance at Jun. 30, 2023 | 569,128 | $ 301,906 | $ (63,464) | 1,891,957 | (1,561,271)
Balance (in shares) at Jun. 30, 2023 |  | 417,092,401 |  |  |
Balance, Treasury Shares (in shares) |  |  | (8,958,594) |  |
Exercise of stock options | 2 | $ 1 |  | 1 |
Exercise of stock options (in shares) |  | 1,500 |  |  |
Vesting of restricted stock units | (279) | $ 411 | $ (279) | (411) |
Vesting of restricted stock units (in shares) |  | 651,057 | (235,344) |  |
Stock-based compensation | 3,608 |  |  | 3,608 |
Loss for the period | (19,311) |  |  |  | (19,311)
Balance at Sep. 30, 2023 | $ 553,148 | $ 302,318 | $ (63,743) | 1,895,155 | (1,580,582)
Balance (in shares) at Sep. 30, 2023 |  | 417,744,958 |  |  |
Balance, Treasury Shares (in shares) |  |  | (9,193,938) |  |
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 |  |  |
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 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 (in shares) | 9,500 |  |  |  |
Loss for the period | $ (33,565) |  |  |  |
Balance at Sep. 30, 2024 | 531,375 | $ 305,202 | $ (65,344) | 1,911,445 | (1,619,928)
Balance (in shares) at Sep. 30, 2024 |  | 421,994,431 |  |  |
Balance, Treasury Shares (in shares) |  |  | (10,534,652) |  |
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 |  |  |
Vesting of restricted stock units | (88) | $ 215 | $ (88) | (215) |
Vesting of restricted stock units (in shares) |  | 340,936 | (102,928) |  |
Issuance of common stock under employee stock purchase plan | 122 | $ 89 |  | 33 |
Issuance of common stock under employee stock purchase plan (in shares) |  | 139,982 |  |  |
Stock-based compensation | 4,387 |  |  | 4,387 |
Loss for the period | 1,522 |  |  |  | 1,522
Balance at Jun. 30, 2024 | 551,879 | $ 305,046 | $ (65,276) | 1,906,903 | (1,594,794)
Balance (in shares) at Jun. 30, 2024 |  | 421,751,350 |  |  |
Balance, Treasury Shares (in shares) |  |  | (10,637,580) |  |
Vesting of restricted stock units | (68) | $ 156 | $ (68) | (156) |
Vesting of restricted stock units (in shares) |  | 243,081 | (95,173) |  |
Stock-based compensation | 4,698 |  |  | 4,698 |
Loss for the period | (25,134) |  |  |  | (25,134)
Balance at Sep. 30, 2024 | $ 531,375 | $ 305,202 | $ (65,344) | $ 1,911,445 | $ (1,619,928)
Balance (in shares) at Sep. 30, 2024 |  | 421,994,431 |  |  |
Balance, Treasury Shares (in shares) | 10,732,753 |  | (10,732,753) |  |

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