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Segmented Information (Tables) | 12 Months Ended
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Dec. 31, 2017
Disclosure Of Operating Segments [Abstract] |
Summary of Operating Segments | The Corporation operates primarily in Canada, the United States and certain international locations, in two industry segments; Contract Drilling Services and Completion and Production Services. Contract Drilling Services includes drilling rigs, directional drilling, procurement and distribution of oilfield supplies, and the manufacture, sale and repair of drilling equipment. Completion and Production Services includes service rigs, snubbing units, oilfield equipment rental, camp and catering services, and wastewater treatment units.
2017 |  | Contract Drilling Services |  |  | Completion and Production Services |  |  | Corporate and Other |  |  | Inter- Segment Eliminations |  |  | Total |
Revenue |  | $ | 1,173,930 |  |  | $ | 154,146 |  |  | $ | — |  |  | $ | (6,852 | ) |  | $ | 1,321,224 |
Operating loss |  |  | (6,930 | ) |  |  | (17,750 | ) |  |  | (63,398 | ) |  |  | — |  |  |  | (88,078 | )
Depreciation and amortization |  |  | 334,587 |  |  |  | 29,638 |  |  |  | 13,521 |  |  |  | — |  |  |  | 377,746 |
Impairment of property, plant and equipment |  |  | 15,313 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 15,313 |
Total assets |  |  | 3,491,393 |  |  |  | 209,353 |  |  |  | 192,185 |  |  |  | — |  |  |  | 3,892,931 |
Goodwill |  |  | 205,167 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 205,167 |
Capital expenditures |  |  | 69,076 |  |  |  | 4,509 |  |  |  | 24,417 |  |  |  | — |  |  |  | 98,002 |
2016 |  | Contract Drilling Services |  |  | Completion and Production Services |  |  | Corporate and Other |  |  | Inter- Segment Eliminations |  |  | Total |
Revenue |  | $ | 907,821 |  |  | $ | 100,049 |  |  | $ | — |  |  | $ | (4,637 | ) |  | $ | 1,003,233 |
Operating loss |  |  | (51,354 | ) |  |  | (25,316 | ) |  |  | (79,309 | ) |  |  | — |  |  |  | (155,979 | )
Depreciation and amortization |  |  | 348,005 |  |  |  | 29,272 |  |  |  | 14,382 |  |  |  | — |  |  |  | 391,659 |
Total assets |  |  | 3,914,604 |  |  |  | 217,064 |  |  |  | 192,546 |  |  |  | — |  |  |  | 4,324,214 |
Goodwill |  |  | 207,399 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 207,399 |
Capital expenditures* |  |  | 196,013 |  |  |  | 1,204 |  |  |  | 6,255 |  |  |  | — |  |  |  | 203,472 |
*- excludes business acquisitions
Summary of Operating Segments by Geographic Locations | The Corporation’s operations are carried on in the following geographic locations:
2017 |  | Canada |  |  | United States |  |  | International |  |  | Inter- Segment Eliminations |  |  | Total |
Revenue |  | $ | 578,817 |  |  | $ | 568,573 |  |  | $ | 190,401 |  |  | $ | (16,567 | ) |  | $ | 1,321,224 |
Total assets |  |  | 1,631,838 |  |  |  | 1,666,368 |  |  |  | 594,725 |  |  |  | — |  |  |  | 3,892,931 |
2016 |  | Canada |  |  | United States |  |  | International |  |  | Inter- Segment Eliminations |  |  | Total |
Revenue |  | $ | 418,030 |  |  | $ | 426,546 |  |  | $ | 169,286 |  |  | $ | (10,629 | ) |  | $ | 1,003,233 |
Total assets |  |  | 1,738,853 |  |  |  | 1,861,908 |  |  |  | 723,453 |  |  |  | — |  |  |  | 4,324,214 |

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