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Income Taxes - Tax rate reconciliation (Details) - CAD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
Reconciliation Of Accounting Profit Multiplied By Applicable Tax Rates [Abstract] |  |
Earnings (loss) before income taxes and non-controlling interest | $ 135,018 | $ 39,929
Combined federal and provincial tax rate | 26.90% | 26.90%
Computed income tax expense (recovery) | $ 36,320 | $ 10,741
Increase Decrease In Taxes Abstract |  |
Difference between Canadian rates and rates applicable to subsidiaries in other countries | 5,558 | (78,138)
Change in unrecognized deferred tax assets | 19,646 | 18,027
Share-based compensation plans | 1,146 | 1,292
Change in tax provision related to transfer pricing | 0 | (61,000)
Non-deductible (non-taxable) capital amounts | 0 | (13,249)
Income in equity-accounted investee | (12,074) | 0
Change in uncertain tax positions | 2,572 | (3,517)
Other permanent differences | 7,909 | (462)
Income tax expense (recovery) | $ 61,077 | $ (126,306)

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- Definition The amount representing the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to Transfer Pricing. + References No definition available. + Details
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- Definition The amount representing the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to NonDeductibleCapitalAmounts. + References No definition available. + Details
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- Definition The amount representing the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to OtherPermanentDifferences. + References No definition available. + Details
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- Definition The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to foreign tax rates. [Refer: Accounting profit] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2019-01-01 -Paragraph 81 -Subparagraph c -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2019-en-r&anchor=para_81_c_i&doctype=Standard -URIDate 2019-03-27 + Details
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