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Capital Disclosures -Summary of Reconciliation of Net Debt to EBITDA Ratio (Detail) $ in Thousands | 12 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2021 CAD ($) | Dec. 31, 2020 CAD ($) | Jun. 30, 2022 CAD ($) | Mar. 31, 2022 CAD ($) | Jun. 30, 2021 CAD ($) | Mar. 31, 2021 CAD ($) | Dec. 31, 2019 CAD ($) | Dec. 31, 2018 CAD ($)
Disclosure of Reconciliation of Net debt to EBITDA ratio [Line Items] |  |  |  |  |  |  |  |
Long-term debt | $ 331,422 | $ 389,712 |  |  |  |  |  |
Cash and cash equivalents | (172,758) | (95,676) | $ (147,078) | $ (133,214) | $ (98,972) | $ (110,642) | $ (96,255) | $ (326,864)
Net debt | 158,664 | 294,036 |  |  |  |  |  |
Earnings before finance costs and income taxes | 55,097 | 118,052 |  |  |  |  |  |
Depreciation and amortization | 87,622 | 85,265 |  |  |  |  |  |
EBITDA | $ 142,719 | $ 203,317 |  |  |  |  |  |
Net debt to EBITDA ratio | 0.11 | 0.45 |  |  |  |  |  |

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