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Summary of Operating Segments (Detail) - CAD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Disclosure of operating segments [Line Items] |  |
Revenue | $ 986,847 | $ 935,753
Operating earnings (loss) | (182,782) | (109,184)
Depreciation and amortization | 282,326 | 316,322
Total assets | 2,661,752 | 2,898,878
All Other Segments [Member] |  |
Disclosure of operating segments [Line Items] |  |
Revenue | 986,847 | 935,753
Operating earnings (loss) | (81,038) | (40,988)
Depreciation and amortization | 282,326 | 316,322
Gain on asset disposals | (8,516) | (11,931)
Total assets | 2,661,752 | 2,898,878
Capital expenditures | 75,941 | 61,592
Contract Drilling Services [Member] |  |
Disclosure of operating segments [Line Items] |  |
Revenue | 877,943 | 861,202
Contract Drilling Services [Member] | All Other Segments [Member] |  |
Disclosure of operating segments [Line Items] |  |
Revenue | 877,943 | 861,202
Operating earnings (loss) | (16,867) | 22,207
Depreciation and amortization | 256,072 | 288,389
Gain on asset disposals | (7,673) | (10,171)
Total assets | 2,392,382 | 2,571,397
Capital expenditures | 70,998 | 57,741
Completion and Production Services [Member] |  |
Disclosure of operating segments [Line Items] |  |
Revenue | 113,488 | 77,251
Completion and Production Services [Member] | All Other Segments [Member] |  |
Disclosure of operating segments [Line Items] |  |
Revenue | 113,488 | 77,251
Operating earnings (loss) | 8,927 | (3,671)
Depreciation and amortization | 15,405 | 16,375
Gain on asset disposals | (525) | (1,447)
Total assets | 127,233 | 132,771
Capital expenditures | 4,452 | 3,362
Corporate and Other [Member] | All Other Segments [Member] |  |
Disclosure of operating segments [Line Items] |  |
Operating earnings (loss) | (73,098) | (59,524)
Depreciation and amortization | 10,849 | 11,558
Gain on asset disposals | (318) | (313)
Total assets | 142,137 | 194,710
Capital expenditures | 491 | 489
Inter- Segment Eliminations [Member] |  |
Disclosure of operating segments [Line Items] |  |
Revenue | (4,584) | (2,700)
Inter- Segment Eliminations [Member] | All Other Segments [Member] |  |
Disclosure of operating segments [Line Items] |  |
Revenue | $ (4,584) | $ (2,700)

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