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Condensed Consolidated Statement of Cash Flow (Detail) - CAD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Disclosure of subsidiaries [Line Items] |  |
Operations | $ 226,118 | $ 288,159
Investments | (40,517) | (74,500)
Financing | (145,624) | (231,814)
Effect of exchange rate changes on cash | (5,906) | (3,770)
Increase (decrease) in cash | 34,071 | (21,925)
Cash, beginning of year | 74,701 | 96,626
Cash, end of year | 108,772 | 74,701
Guarantor Subsidiaries [Member] |  |
Disclosure of subsidiaries [Line Items] |  |
Operations | 263,514 | 480,215
Investments | (32,668) | (56,937)
Financing | (234,953) | (438,350)
Effect of exchange rate changes on cash | (1,152) | (1,415)
Increase (decrease) in cash | (5,259) | (16,487)
Cash, beginning of year | 20,651 | 37,138
Cash, end of year | 15,392 | 20,651
Non-Guarantor Subsidiaries [Member] |  |
Disclosure of subsidiaries [Line Items] |  |
Operations | 42,523 | (2,680)
Investments | (7,252) | (15,337)
Financing | (51,126) | 21,936
Effect of exchange rate changes on cash | (410) | (1,683)
Increase (decrease) in cash | (16,265) | 2,236
Cash, beginning of year | 33,098 | 30,862
Cash, end of year | 16,833 | 33,098
Consolidating Adjustments [Member] |  |
Disclosure of subsidiaries [Line Items] |  |
Investments | (293,193) | (410,979)
Financing | 293,193 | 410,979
Parent [member] |  |
Disclosure of subsidiaries [Line Items] |  |
Operations | (79,919) | (189,376)
Investments | 292,596 | 408,753
Financing | (152,738) | (226,379)
Effect of exchange rate changes on cash | (4,344) | (672)
Increase (decrease) in cash | 55,595 | (7,674)
Cash, beginning of year | 20,952 | 28,626
Cash, end of year | $ 76,547 | $ 20,952

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