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Reconciliation of Earnings Per Share Calculations - Summary of Reconciliation of Earnings Per Share Calculations (Detail) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
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Mar. 31, 2022 $ / shares shares | Mar. 31, 2021 $ / shares shares | Dec. 31, 2021 CAD ($) $ / shares shares | Dec. 31, 2021 $ / shares | Dec. 31, 2020 CAD ($) $ / shares shares | Dec. 31, 2020 $ / shares | Dec. 31, 2019 CAD ($) $ / shares shares | Dec. 31, 2019 $ / shares
Earnings per share [line items] |  |  |  |  |  |  |  |
Basic - Net earnings | $ |  |  | $ (18,455) |  | $ 88,257 |  | $ 152,128 |
Basic - Weighted average shares outstanding | shares | 89,679,811 | 89,678,845 | 89,678,845 |  | 89,678,845 |  | 89,500,829 |
Basic - Per share | (per share) | $ 0 | $ 0.03 | $ (0.21) | $ (0.21) | $ 0.98 | $ 0.98 | $ 1.7 | $ 1.7
Dilutive effect of stock option conversion - Net earnings | $ |  |  | $ 0 |  | $ 0 |  | $ 0 |
Dilutive effect of stock option conversion - Weighted average shares outstanding | shares |  |  | 0 |  | 0 |  | 208,916 |
Dilutive effect of stock option conversion - Per share | $ / shares |  |  |  | 0 |  | 0 |  | 0
Diluted - Net earnings | $ |  |  | $ (18,455) |  | $ 88,257 |  | $ 152,128 |
Diluted - Weighted average shares outstanding | shares | 89,679,811 | 89,762,110 | 89,678,845 |  | 89,678,845 |  | 89,709,745 |
Diluted - Per share | (per share) | $ 0 | $ 0.03 | $ (0.21) | $ (0.21) | $ 0.98 | $ 0.98 | $ 1.7 | $ 1.7

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- Definition The weighted average number of ordinary shares outstanding plus the weighted average number of ordinary shares that would be issued on the conversion of all the dilutive potential ordinary shares into ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2021-01-01 -Paragraph 70 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=33&code=ifrs-tx-2021-en-r&anchor=para_70_b&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator) divided by the weighted average number of ordinary shares outstanding during the period (the denominator). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2021-01-01 -Paragraph 66 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=33&code=ifrs-tx-2021-en-r&anchor=para_66&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2021-01-01 -Paragraph 67 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=33&code=ifrs-tx-2021-en-r&anchor=para_67&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator), divided by the weighted average number of ordinary shares outstanding during the period (the denominator), both adjusted for the effects of all dilutive potential ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2021-01-01 -Paragraph 66 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=33&code=ifrs-tx-2021-en-r&anchor=para_66&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2021-01-01 -Paragraph 67 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=33&code=ifrs-tx-2021-en-r&anchor=para_67&doctype=Standard -URIDate 2021-03-24 + Details
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