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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Operating revenues: |  |  |  |
Total operating revenues |  | $ 3,326,997,000 | $ 2,356,684,000 | $ 915,866,000
Operating costs and expenses: |  |  |  |
Depreciation, depletion, amortization and impairment |  | 916,318,000 | 783,341,000 | 668,434,000
Impairment of goodwill |  | 211,129,000 |  |
Selling, general and administrative |  | 134,071,000 | 105,847,000 | 69,205,000
Merger and integration expenses |  | 2,738,000 | 74,451,000 |
Other operating income, net | [1] | (17,569,000) | (31,957,000) | (14,323,000)
Total operating costs and expenses |  | 3,649,174,000 | 2,649,222,000 | 1,372,092,000
Operating loss |  | (322,177,000) | (292,538,000) | (456,226,000)
Other income (expense): |  |  |  |
Interest income |  | 5,597,000 | 1,866,000 | 327,000
Interest expense, net of amount capitalized |  | (51,578,000) | (37,472,000) | (40,366,000)
Other |  | 750,000 | 343,000 | 69,000
Total other expense |  | (45,231,000) | (35,263,000) | (39,970,000)
Loss before income taxes |  | (367,408,000) | (327,801,000) | (496,196,000)
Income tax benefit |  | (45,987,000) | (333,711,000) | (177,562,000)
Net income (loss) |  | $ (321,421,000) | $ 5,910,000 | $ (318,634,000)
Net income (loss) per common share: |  |  |  |
Basic |  | $ (1.47) | $ 0.03 | $ (2.18)
Diluted |  | $ (1.47) | $ 0.03 | $ (2.18)
Weighted average number of common shares outstanding: |  |  |  |
Basic |  | 218,643 | 198,447 | 146,178
Diluted |  | 218,643 | 199,882 | 146,178
Contract Drilling |  |  |  |
Operating revenues: |  |  |  |
Total operating revenues |  | $ 1,430,492,000 | $ 1,040,033,000 | $ 543,663,000
Operating costs and expenses: |  |  |  |
Operating costs and expenses |  | 885,704,000 | 667,105,000 | 305,804,000
Impairment of goodwill |  | 0 |  |
Pressure Pumping |  |  |  |
Operating revenues: |  |  |  |
Total operating revenues |  | 1,573,396,000 | 1,200,311,000 | 354,070,000
Operating costs and expenses: |  |  |  |
Operating costs and expenses |  | 1,263,850,000 | 966,835,000 | 334,588,000
Impairment of goodwill |  | 121,444,000 |  |
Directional Drilling |  |  |  |
Operating revenues: |  |  |  |
Total operating revenues |  | 209,275,000 | 45,580,000 |
Operating costs and expenses: |  |  |  |
Operating costs and expenses |  | 175,829,000 | 32,172,000 |
Impairment of goodwill |  | 89,685,000 |  |
Other |  |  |  |
Operating revenues: |  |  |  |
Total operating revenues |  | 113,834,000 | 70,760,000 | 18,133,000
Operating costs and expenses: |  |  |  |
Operating costs and expenses |  | $ 77,104,000 | $ 51,428,000 | $ 8,384,000
[1] | Other operating income (expense), net includes net gains or losses associated with the disposal of assets relate to corporate strategy decisions of the executive management group. Accordingly, the related gains or losses have been separately presented and excluded from the results of specific segments. This caption also includes expenses related to certain legal-related expenses and settlements, net of insurance reimbursements and certain research and development expenses.

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