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Consolidated Statements of Comprehensive Loss - CAD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Statement Of Comprehensive Income [Abstract] |  |
Net earnings (loss) | $ 6,618 | $ (294,270)
Unrealized gain on translation of assets and liabilities of operations denominated in foreign currency | (106,781) | 175,630
Foreign exchange loss on net investment hedge with U.S. denominated debt, net of tax | 79,022 | (145,226)
Comprehensive loss | $ (21,141) | $ (263,866)

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