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Condensed Consolidated Statement of Net Earnings (Loss) (Detail) - CAD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Disclosure of subsidiaries [Line Items] |  |
Revenue | $ 1,541,320 | $ 1,541,189
Operating expense | 1,038,967 | 1,067,264
General and administrative expense | 104,010 | 111,830
Restructuring | 6,438 | 1,164
Other recoveries |  | (14,200)
Earnings before income taxes, gain on redemption and repurchase of unsecured senior notes, finance charges, foreign exchange, impairment of goodwill, reversal of impairment of property, plant and equipment, loss on asset decommissioning, gain on asset disposals and depreciation and amortization | 391,905 | 375,131
Depreciation and amortization | 333,616 | 377,044
Gain on asset disposals | (50,741) | (11,384)
Impairment of goodwill |  | 207,544
Loss on asset decommissioning | 20,263 |
Reversal of impairment of property, plant and equipment | (5,810) |
Foreign exchange | (8,722) | 4,017
Finance charges | 118,453 | 127,178
Gain on redemption and repurchase of unsecured senior notes | (6,815) | (5,672)
Loss before income taxes | (8,339) | (323,596)
Income taxes | (14,957) | (29,326)
Net earnings (loss) | 6,618 | (294,270)
Guarantor Subsidiaries [Member] |  |
Disclosure of subsidiaries [Line Items] |  |
Revenue | 1,341,624 | 1,356,913
Operating expense | 909,898 | 949,451
General and administrative expense | 57,119 | 48,748
Restructuring | 3,616 | 1,164
Earnings before income taxes, gain on redemption and repurchase of unsecured senior notes, finance charges, foreign exchange, impairment of goodwill, reversal of impairment of property, plant and equipment, loss on asset decommissioning, gain on asset disposals and depreciation and amortization | 370,991 | 357,550
Depreciation and amortization | 262,914 | 304,070
Gain on asset disposals | (50,439) | (6,051)
Impairment of goodwill |  | 207,544
Loss on asset decommissioning | 20,263 |
Reversal of impairment of property, plant and equipment | (5,810) |
Foreign exchange | (758) | (443)
Finance charges | (354) | (233)
Loss before income taxes | 145,175 | (147,337)
Income taxes | 44,809 | 13,863
Net earnings (loss) | 100,366 | (161,200)
Non-Guarantor Subsidiaries [Member] |  |
Disclosure of subsidiaries [Line Items] |  |
Revenue | 210,292 | 191,131
Operating expense | 139,701 | 124,689
General and administrative expense | 8,473 | 10,444
Earnings before income taxes, gain on redemption and repurchase of unsecured senior notes, finance charges, foreign exchange, impairment of goodwill, reversal of impairment of property, plant and equipment, loss on asset decommissioning, gain on asset disposals and depreciation and amortization | 62,118 | 55,998
Depreciation and amortization | 57,205 | 60,562
Gain on asset disposals | (255) | (19)
Foreign exchange | 535 | (359)
Finance charges | 32 | 653
Loss before income taxes | 4,601 | (4,839)
Income taxes | 2,853 | 2,936
Net earnings (loss) | 1,748 | (7,775)
Consolidating Adjustments [Member] |  |
Disclosure of subsidiaries [Line Items] |  |
Revenue | (10,688) | (6,959)
Operating expense | (10,688) | (6,959)
Depreciation and amortization | 225 | 216
Equity in earnings (loss) of subsidiaries | 102,114 | (168,975)
Loss before income taxes | (102,339) | 168,759
Net earnings (loss) | (102,339) | 168,759
Parent [member] |  |
Disclosure of subsidiaries [Line Items] |  |
Revenue | 92 | 104
Operating expense | 56 | 83
General and administrative expense | 38,418 | 52,638
Restructuring | 2,822 |
Other recoveries |  | (14,200)
Earnings before income taxes, gain on redemption and repurchase of unsecured senior notes, finance charges, foreign exchange, impairment of goodwill, reversal of impairment of property, plant and equipment, loss on asset decommissioning, gain on asset disposals and depreciation and amortization | (41,204) | (38,417)
Depreciation and amortization | 13,272 | 12,196
Gain on asset disposals | (47) | (5,314)
Foreign exchange | (8,499) | 4,819
Finance charges | 118,775 | 126,758
Gain on redemption and repurchase of unsecured senior notes | (6,815) | (5,672)
Equity in earnings (loss) of subsidiaries | (102,114) | 168,975
Loss before income taxes | (55,776) | (340,179)
Income taxes | (62,619) | (46,125)
Net earnings (loss) | $ 6,843 | $ (294,054)

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- Definition The amount of reversal of impairment loss recognised in profit or loss for property, plant and equipment. [Refer: Reversal of impairment loss recognised in profit or loss; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2019-01-01 -Paragraph 73 -Subparagraph e -Clause vi -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2019-en-r&anchor=para_73_e_vi&doctype=Standard -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 98 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_98_a&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The amount of expense relating to selling, general and administrative activities of the entity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 85 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_85&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition Earnings before income taxes gain on redemption and repurchase of financial instruments. + References No definition available. + Details
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- Definition Gain (loss) on redemption and repurchase of unsecured senior notes. + References No definition available. + Details
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- Definition Losses on asset decommissioning. + References No definition available. + Details
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- Definition Other recoveries. + References No definition available. + Details
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- Definition Share of profit (loss) of subsidiaries accounted for using equity method. + References No definition available. + Details
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