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Consolidated Statement of Changes in Equity $ in Thousands | USD ($) shares | Share capital USD ($) shares | Contributed surplus USD ($) | Accumulated deficit USD ($) | Foreign currency reserve USD ($) | DSUs USD ($) | DSUs Share capital USD ($) shares | DSUs Contributed surplus USD ($) | RSUs USD ($) shares | RSUs Share capital USD ($) shares | RSUs Contributed surplus USD ($)
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Equity (in shares) | shares |  | 234,514,326 |  |  |  |  |  |  |  |  |
Equity at Dec. 31, 2019 | $ 250,263 | $ 1,182,660 | $ 290,640 | $ (1,223,850) | $ 813 |  |  |  |  |  |
Net loss | (51,377) |  |  | (51,377) |  |  |  |  |  |  |
Equity offering (in shares) | shares |  | 45,557,548 |  |  |  |  |  |  |  |  |
Equity offerings (note 21) | $ 694,608 | $ 694,608 |  |  |  |  |  |  |  |  |
Redeemed/exercised (in shares) | shares | 1,693,466 | 1,693,466 |  |  |  |  | 7,608 |  | 305,229 | 305,229 |
Redeemed/exercised | $ 4,438 | $ 6,820 | (2,382) |  |  | $ (64) | $ 14 | $ (78) | $ (3,023) | $ 633 | $ (3,656)
Share-based compensation (note 21) | 6,237 |  | 6,237 |  |  | 64 |  |  | $ 3,023 |  |
Other comprehensive income (loss): |  |  |  |  |  |  |  |  |  |  |
Defined benefit plan actuarial gain (loss) | (289) |  |  | (289) |  |  |  |  |  |  |
Foreign currency translation for foreign operations | 94 |  |  |  | 94 |  |  |  |  |  |
Equity (in shares) at Dec. 31, 2020 | shares |  | 282,078,177 |  |  |  |  |  |  |  |  |
Equity at Dec. 31, 2020 | 900,887 | $ 1,884,735 | 290,761 | (1,275,516) | 907 |  |  |  |  |  |
Equity (in shares) | shares |  | 282,078,177 |  |  |  |  |  |  |  |  |
Net loss | (114,233) |  |  | (114,233) |  |  |  |  |  |  |
Deferred share consideration related to acquisition (note 7) | 4,851 |  | 4,851 |  |  |  |  |  |  |  |
Equity offering (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 (loss) | 2,170 |  |  | 2,170 |  |  |  |  |  |  |
Foreign currency translation for foreign operations | 814 |  |  |  | 814 |  |  |  |  |  |
Equity (in shares) at Dec. 31, 2021 | shares |  | 297,700,295 |  |  |  |  |  |  |  |  |
Equity at Dec. 31, 2021 | $ 1,328,217 | $ 2,416,256 | $ 297,819 | $ (1,387,579) | $ 1,721 |  |  |  |  |  |
Equity (in shares) | shares |  | 297,700,295 |  |  |  |  |  |  |  |  |

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