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Assets Held for Sale and Discontinued Operations (Tables) | 12 Months Ended
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Dec. 31, 2017
Assets Held for Sale and Discontinued Operations |
Schedule of condensed statements of income (loss) from discontinued operations |
|  |  |  | Year Ended December 31, |
|  |  |  | 2017 |  | 2016 |  | 2015 |
|  |  |  | (In thousands, except percentages) |
Operating revenues (1) |  |  |  | $ | 6,169 |  | $ | 2,859 |  | $ | 3,212 |
Income (loss) from Oil & Gas discontinued operations: |  |  |  |  |  |  |  |  |  |  |  |
Income (loss) from discontinued operations |  |  |  | $ | (2,506) |  | $ | (3,978) |  | $ | (5,003) |
Less: Impairment charges or other (gains) and losses on sale of wholly owned assets (2) |  |  |  | $ | 51,028 |  | $ | 19,445 |  | $ | 49,890 |
Less: Income tax expense (benefit) |  |  |  | $ | (10,015) |  | $ | (5,060) |  | $ | (14,455) |
Income (loss) from Oil and Gas discontinued operations, net of tax |  |  |  | $ | (43,519) |  | $ | (18,363) |  | $ | (40,438) |
Income (loss) from Rig Technologies discontinued operations: |  |  |  |  |  |  |  |  |  |  |  |
Income (loss) from discontinued operations |  |  |  | $ | — |  | $ | — |  | $ | — |
Less: Impairment charges or other (gains) and losses on sale of wholly owned assets |  |  |  | $ | — |  | $ | — |  | $ | 3,146 | (3)
Less: Income tax expense (benefit) |  |  |  | $ | — |  | $ | — |  | $ | (787) |
Income (loss) from Rig Technologies discontinued operations, net of tax |  |  |  | $ | — |  | $ | — |  | $ | (2,359) |
Income (loss) from discontinued operations, net of tax |  |  |  | $ | (43,519) |  | $ | (18,363) |  | $ | (42,797) |
Oil and Gas
| (1) |  | Reflects operating revenues of our historical oil and gas reportable segment.
| (2) |  | Includes impairment charges of $35.3 million, $15.4 million and $51.0 million in 2017, 2016 and 2015, respectively, due to the deterioration of economic conditions in the natural gas market in western Canada, partially offset by a gain related to our restructure of our future pipeline obligations. Additionally, this line item includes a charge of $16.5 million related to the settlement of litigation during 2017 associated with our previously owned Ramshorn International properties.
Rig Technologies
| (3) |  | Reflects an impairment charge for a note receivable of $3.1 million remaining from the sale of one of our former Canada subsidiaries that provided logistics services.

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