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Accrued Liabilities and Other and Other Long-Term Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2021
Payables and Accruals [Abstract] |
Schedule of Accrued Liabilities | Accrued Liabilities and Other
| December 31, 2021 $ |  | December 31, 2020 $
Accrued liabilities | 93,728 |  | 122,511
Deferred revenues - current | 852 |  | 4,208
Current portion of derivative liabilities (note 15) | 180 |  | 1,260
Office lease liability – current (note 1) | 2,142 |  | 1,595
Asset retirement obligation - current | 6,161 |  | 12,000
| 103,063 |  | 141,574
Schedule of Other Long-Term Liabilities | Other Long-Term Liabilities
| December 31, 2021 $ |  | December 31, 2020 $
Unrecognized tax benefits (note 21) | 46,956 |  | 51,562
Asset retirement obligation | 8,792 |  | 37,996
Office lease liability – long-term (note 1) | 8,666 |  | 9,396
Pension liabilities | 7,416 |  | 9,172
Derivative liabilities (note 15) | — |  | 597
Other | 678 |  | 352
| 72,508 |  | 109,075

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- Definition Tabular disclosure of other noncurrent liabilities. + References No definition available. + Details
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- Definition Tabular disclosure of the (a) carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business (accounts payable); (b) other payables; and (c) accrued liabilities. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). An alternative caption includes accrued expenses. + References No definition available. + Details
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