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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Operating revenues: |  |  |  |
Other |  | $ 18,133,000 | $ 24,931,000 | $ 50,196,000
Total operating revenues |  | 915,866,000 | 1,891,277,000 | 3,182,291,000
Operating costs and expenses: |  |  |  |
Contract drilling |  | 305,804,000 | 608,848,000 | 1,066,659,000
Pressure pumping |  | 334,588,000 | 612,021,000 | 1,036,310,000
Other |  | 8,384,000 | 11,500,000 | 13,102,000
Depreciation, depletion, amortization and impairment |  | 668,434,000 | 864,759,000 | 718,730,000
Impairment of goodwill |  |  | 124,561,000 |
Selling, general and administrative |  | 69,205,000 | 74,913,000 | 80,145,000
Other operating (income) expense, net | [1] | (14,323,000) | 1,647,000 | (15,781,000)
Total operating costs and expenses |  | 1,372,092,000 | 2,298,249,000 | 2,899,165,000
Operating income (loss) |  | (456,226,000) | (406,972,000) | 283,126,000
Other income (expense): |  |  |  |
Interest income |  | 327,000 | 964,000 | 979,000
Interest expense, net of amount capitalized |  | (40,366,000) | (36,475,000) | (29,825,000)
Other |  | 69,000 | 34,000 | 3,000
Total other expense |  | (39,970,000) | (35,477,000) | (28,843,000)
Income (loss) before income taxes |  | (496,196,000) | (442,449,000) | 254,283,000
Income tax expense (benefit) |  | (177,562,000) | (147,963,000) | 91,619,000
Net income (loss) |  | $ (318,634,000) | $ (294,486,000) | $ 162,664,000
Net income (loss) per common share: |  |  |  |
Basic |  | $ (2.18) | $ (2.00) | $ 1.12
Diluted |  | $ (2.18) | $ (2.00) | $ 1.11
Weighted average number of common shares outstanding: |  |  |  |
Basic |  | 146,178 | 145,416 | 144,066
Diluted |  | 146,178 | 145,416 | 145,376
Cash dividends per common share |  | $ 0.16 | $ 0.40 | $ 0.40
Contract Drilling |  |  |  |
Operating revenues: |  |  |  |
Oil and gas services |  | $ 543,663,000 | $ 1,153,892,000 | $ 1,838,830,000
Operating costs and expenses: |  |  |  |
Impairment of goodwill |  |  | 0 |
Pressure Pumping |  |  |  |
Operating revenues: |  |  |  |
Oil and gas services |  | $ 354,070,000 | $ 712,454,000 | $ 1,293,265,000
[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 settlements net of insurance reimbursements.

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