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Equity - Narrative (Details) |  | 12 Months Ended |  |
--- | --- | --- | --- | ---
Feb. 23, 2021 USD ($) $ / shares shares | Dec. 31, 2021 USD ($) shares plan $ / shares | Dec. 31, 2020 USD ($) shares $ / shares | Mar. 31, 2021 USD ($) | Dec. 31, 2019 shares
Disclosure of classes of share capital [line items] |  |  |  |  |
Net proceeds | $ |  |  | $ 694,608,000 |  |
Shares issued (in shares) |  | 297,700,295 | 282,078,177 |  |
Compensation expense | $ |  | $ 9,669,000 | $ 6,228,000 |  |
Options exercised (in shares) |  | 549,281 | 1,693,466 |  |
Proceeds from exercise of options | $ |  | $ 2,415,000 | $ 4,438,000 |  |
Options granted (in shares) |  | 540,116 | 1,834,919 |  |
Weighted average fair value, share options granted (usd per share) | $ |  | $ 10.76 | $ 5.49 |  |
Options outstanding (in shares) |  | 4,041,567 | 4,149,639 |  | 4,116,149
Shares to be issued (in shares) |  | 19,540,514 | 17,877,028 |  |
Share-based compensation | $ |  | $ 9,669,000 | $ 6,237,000 |  |
Bought Deal Offering |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |
Number of shares issued (in shares) | 14,870,000 | 14,870,000 | 20,909,300 |  |
Price per share (usd per share) | $ / shares | $ 37.00 | $ 37.00 | $ 19.25 |  |
Gross proceeds from offering | $ | $ 550,190,000 | $ 550,190,000 | $ 402,504,000 |  |
Net proceeds | $ | $ 527,291,000 | $ 527,291,000 | $ 385,782,000 |  |
ATM Programs |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |
Number of shares issued (in shares) |  |  | 24,648,248 |  |
Price per share (usd per share) | $ / shares |  |  | $ 12.85 |  |
Gross proceeds from offering | $ |  |  | $ 316,673,000 |  |
Net proceeds | $ |  |  | $ 308,826,000 |  |
Prospectus |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |
Sale of stock authorized amount | $ |  |  |  | $ 1,500,000,000 |
Common shares |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |
Options exercised (in shares) |  | 549,281 | 1,693,466 |  |
Proceeds from exercise of options | $ |  | $ 2,415,000 | $ 4,438,000 |  |
Stock Option |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |
Award term (years) |  | 7 years |  |  |
Award vesting percentage |  | 33.33333% |  |  |
Compensation expense | $ |  | $ 6,093,000 | 4,482,000 |  |
Award vesting period (years) |  | 3 years |  |  |
DSUs |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |
Compensation expense | $ |  | $ 672,000 | $ 314,000 |  |
Number of common shares each unit is redeemable for (in shares) |  | 1 |  |  |
Number of shares granted (in shares) |  | 35,953 | 23,809 |  |
Exercised (in shares) |  | 99,761 | 15,156 |  |
Share-based compensation | $ |  | $ 1,290,000 | $ 64,000 |  |
Common shares issued (in shares) |  | 46,388 | 7,608 |  |
Outstanding (in shares) |  | 756,223 | 820,031 |  | 811,378
Granted (in shares) |  | 35,953 | 23,809 |  |
RSUs |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |
Compensation expense | $ |  | $ 2,904,000 | $ 1,432,000 |  |
Options exercised (in shares) |  | 156,449 | 305,229 |  |
Number of common shares each unit is redeemable for (in shares) |  | 1 |  |  |
Exercised (in shares) |  | 325,863 | 593,025 |  |
Share-based compensation | $ |  | $ 4,357,000 | $ 3,023,000 |  |
Outstanding (in shares) |  | 966,220 | 1,129,946 |  | 1,305,265
Number of plans | plan |  | 2 |  |  |
Granted (in shares) |  | 195,838 | 334,758 |  |

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