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Quarterly Financial Information | 12 Months Ended
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Dec. 31, 2020
Quarterly Financial Information Disclosure [Abstract] |
Quarterly Financial Information | 21. Quarterly Financial Information (in thousands, except per share amounts) (unaudited)
|  | 1st |  |  | 2nd |  |  | 3rd |  |  | 4th |
|  | Quarter |  |  | Quarter |  |  | Quarter |  |  | Quarter |
2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  | $ | 445,927 |  |  | $ | 250,380 |  |  | $ | 207,141 |  |  | $ | 220,801 |
Operating loss |  |  | (494,410 | ) |  |  | (159,084 | ) |  |  | (114,566 | ) |  |  | (124,198 | )
Net loss |  |  | (434,722 | ) |  |  | (150,332 | ) |  |  | (112,111 | ) |  |  | (106,527 | )
Net loss per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | (2.28 | ) |  | $ | (0.81 | ) |  | $ | (0.60 | ) |  | $ | (0.57 | )
Diluted |  | $ | (2.28 | ) |  | $ | (0.81 | ) |  | $ | (0.60 | ) |  | $ | (0.57 | )
Included within net loss: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill impairment, after tax |  | $ | 340,147 |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Restructuring, after tax |  |  | — |  |  |  | 33,967 |  |  |  | — |  |  |  | — |
Oil and natural gas assets impairment, after tax |  |  | 9,084 |  |  |  | 604 |  |  |  | — |  |  |  | — |
Impairment of property and equipment related to Canadian drilling operations, after tax (1) |  |  | — |  |  |  | 7,314 |  |  |  | — |  |  |  | — |
Net gain from the realization of insurance proceeds, after tax (2) |  |  | — |  |  |  | (3,696 | ) |  |  | — |  |  |  | — |
Impairment of capacity reservation contract, after tax (3) |  |  | — |  |  |  | 8,157 |  |  |  | — |  |  |  | — |
Gain on early debt extinguishment, after tax (4) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (2,916 | )
(1) | Impairment of property and equipment related to Canadian drilling operations was included in “Depreciation, depletion, amortization and impairment” in the consolidated statements of operations.
(2) | Net gain from the realization of insurance proceeds was included in “Other operating expenses (income), net” in the consolidated statements of operations.
(3) | Impairment of capacity reservation contract was included in “Other operating expenses (income), net” in the consolidated statements of operations.
(4) | Gain on early debt extinguishment was included in “Interest expense, net of amount capitalized” in the consolidated statements of operations.
|  | 1st |  |  | 2nd |  |  | 3rd |  |  | 4th |
|  | Quarter |  |  | Quarter |  |  | Quarter |  |  | Quarter |
2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  | $ | 704,171 |  |  | $ | 675,765 |  |  | $ | 598,452 |  |  | $ | 492,297 |
Operating loss |  |  | (23,383 | ) |  |  | (48,125 | ) |  |  | (307,305 | ) |  |  | (82,763 | )
Net loss |  |  | (28,614 | ) |  |  | (49,447 | ) |  |  | (261,719 | ) |  |  | (85,923 | )
Net loss per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | (0.14 | ) |  | $ | (0.24 | ) |  | $ | (1.31 | ) |  | $ | (0.44 | )
Diluted |  | $ | (0.14 | ) |  | $ | (0.24 | ) |  | $ | (1.31 | ) |  | $ | (0.44 | )
Included within net loss: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill impairment, after tax |  | $ | — |  |  | $ | — |  |  | $ | 14,276 |  |  | $ | — |
Impairment of capacity reservation contract, after tax (1) |  |  | — |  |  |  | 10,519 |  |  |  | — |  |  |  | — |
Impairment of property and equipment, after tax (2) |  |  | — |  |  |  | — |  |  |  | 162,581 |  |  |  | — |
Directional drilling charges (3) |  |  | — |  |  |  | — |  |  |  | 13,616 |  |  |  | — |
Oilfield technology and manufacturing charges, after tax (4) |  |  | — |  |  |  | — |  |  |  | 11,694 |  |  |  | — |
Early repayment of debt charge, after tax (5) |  |  | — |  |  |  | — |  |  |  | 6,614 |  |  |  | 12,401 |
(1) | Impairment of capacity reservation contract was included in “Other operating expenses (income), net” in the consolidated statements of operations.
(2) | Impairment of property and equipment was included in “Depreciation, depletion, amortization and impairment” in the consolidated statements of operations.
(3) | Directional drilling charges were included in “Direct operating costs” in the consolidated statements of operations.
(4) | Inventory write-offs and severance expense as a result of transitioning away from our engineering and manufacturing efforts in Calgary were included in “Direct operating costs” and “Selling, general and administrative” in the consolidated statements of operations, respectively.
(5) | Early repayment of debt charge was included in “Interest expense, net of amount capitalized” in the consolidated statements of operations.

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- Definition The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -URI http://asc.fasb.org/topic&trid=2126967 + Details
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