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Consolidated Statements of Changes in Equity $ in Thousands | USD ($) shares | Opening balance after adjustment, cumulative effect at date of initial application USD ($) | Share capital USD ($) shares | Share capital Opening balance after adjustment, cumulative effect at date of initial application USD ($) shares | Contributed surplus USD ($) | Contributed surplus Opening balance after adjustment, cumulative effect at date of initial application USD ($) | Accumulated deficit USD ($) | Accumulated deficit Opening balance after adjustment, cumulative effect at date of initial application USD ($) | Foreign currency reserve USD ($) | Foreign currency reserve Opening balance after adjustment, cumulative effect at date of initial application USD ($) | DSUs USD ($) | DSUs Share capital USD ($) shares | DSUs Contributed surplus USD ($) | RSUs USD ($) shares | RSUs Share capital USD ($) shares | RSUs Contributed surplus USD ($)
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning balance (in shares) at Dec. 31, 2020 | shares |  |  | 282,078,177 |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance at Dec. 31, 2020 | $ 900,887 |  | $ 1,884,735 |  | $ 290,761 |  | $ (1,275,516) |  | $ 907 |  |  |  |  |  |  |
Changes in Stock Holders Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net loss | (114,233) |  |  |  |  |  | (114,233) |  |  |  |  |  |  |  |  |
Deferred share consideration related to acquisition (notes 7 & 21) | 4,851 |  |  |  | 4,851 |  |  |  |  |  |  |  |  |  |  |
Equity offerings (in shares) | shares |  |  | 14,870,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Equity offerings (note 21) | $ 527,291 |  | $ 527,291 |  |  |  |  |  |  |  |  |  |  |  |  |
Redeemed/exercised (in shares) | shares | 549,281 |  | 549,281 |  |  |  |  |  |  |  |  | 46,388 |  | 156,449 | 156,449 |
Redeemed/exercised | $ 2,415 |  | $ 3,526 |  | (1,111) |  |  |  |  |  | $ (1,290) | $ 127 | $ (1,417) | $ (4,357) | $ 577 | $ (4,934)
Share-based compensation (note 21) | 9,669 |  |  |  | 9,669 |  |  |  |  |  | 1,290 |  |  | $ 4,357 |  |
Other comprehensive income (loss): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Defined benefit plan actuarial gain (note 20) | 2,170 |  |  |  |  |  | 2,170 |  |  |  |  |  |  |  |  |
Foreign currency translation for foreign operations | 814 |  |  |  |  |  |  |  | 814 |  |  |  |  |  |  |
Ending balance (in shares) at Dec. 31, 2021 | shares |  |  |  | 297,700,295 |  |  |  |  |  |  |  |  |  |  |  |
Ending balance at Dec. 31, 2021 | 1,328,217 | $ 1,328,217 |  | $ 2,416,256 |  | $ 297,819 |  | $ (1,387,579) |  | $ 1,721 |  |  |  |  |  |
Other comprehensive income (loss): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Onerous contracts provision (notes 4 & 18) | (1,200) |  |  |  |  |  | (1,200) |  |  |  |  |  |  |  |  |
Net loss | (173,494) |  |  |  |  |  | (173,494) |  |  |  |  |  |  |  |  |
Deferred share consideration related to acquisition (notes 7 & 21) | $ (20) |  | $ 1,762 |  | (1,782) |  |  |  |  |  |  |  |  |  |  |
Deferred share consideration related to acquisition (in shares) | shares |  |  | 112,451 |  |  |  |  |  |  |  |  |  |  |  |  |
Equity offerings (in shares) | shares | 112,451 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redeemed/exercised (in shares) | shares | 304,635 |  | 304,635 |  |  |  |  |  |  |  |  | 58,990 |  | 217,832 | 217,832 |
Redeemed/exercised | $ 916 |  | $ 1,349 |  | (433) |  |  |  |  |  | (753) | $ 244 | $ (997) | $ (2,466) | $ 785 | $ (3,251)
Share-based compensation (note 21) | 9,408 |  |  |  | 9,408 |  |  |  |  |  | $ 753 |  |  | $ 2,466 |  |
Defined benefit plan actuarial gain (note 20) | 1,514 |  |  |  |  |  | 1,514 |  |  |  |  |  |  |  |  |
Foreign currency translation for foreign operations | (3,211) |  |  |  |  |  |  |  | (3,211) |  |  |  |  |  |  |
Ending balance (in shares) at Dec. 31, 2022 | shares |  |  | 298,394,203 |  |  |  |  |  |  |  |  |  |  |  |  |
Ending balance at Dec. 31, 2022 | 1,158,911 |  | $ 2,420,396 |  | $ 300,764 |  | $ (1,560,759) |  | $ (1,490) |  |  |  |  |  |  |
Other comprehensive income (loss): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Onerous contracts provision (notes 4 & 18) | $ (4,400) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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