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Assets Held for Sale and Discontinued Operations (Tables) | 12 Months Ended
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Dec. 31, 2016
Assets Held for Sale and Discontinued Operations |
Schedule of condensed statements of income (loss) from discontinued operations |
|  |  | Year Ended December 31, |
|  |  | 2016 |  | 2015 |  | 2014 |
|  |  | (In thousands, except percentages) |
Operating revenues (1) |  |  | $ | 2,859 |  | $ | 3,212 |  | $ | 13,143 |
Income (loss) from Oil & Gas discontinued operations: |  |  |  |  |  |  |  |  |  |  |
Income (loss) from discontinued operations |  |  | $ | (3,978) |  | $ | (5,003) |  | $ | (1,840) |
Less: Impairment charges or other (gains) and losses on sale of wholly owned assets (2) |  |  | $ | 19,445 |  | $ | 49,890 |  | $ | (1,313) |
Less: Income tax expense (benefit) |  |  | $ | (5,060) |  | $ | (14,455) |  | $ | (548) |
Income (loss) from Oil and Gas discontinued operations, net of tax |  |  | $ | (18,363) |  | $ | (40,438) |  | $ | 21 |
Income (loss) from Rig Services 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 Services discontinued operations, net of tax |  |  | $ | — |  | $ | (2,359) |  | $ | — |
Income (loss) from discontinued operations, net of tax |  |  | $ | (18,363) |  | $ | (42,797) |  | $ | 21 |
Oil and Gas
| (1) |  | Reflects operating revenues of our historical oil and gas operating segment.
| (2) |  | Includes impairment charges of $15.4 million and $51.0 million in 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.
Rig Services
| (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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- Definition Tabular disclosure of information related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=65878427&loc=SL51721533-107759 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 4B -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721665-107760 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64827811&loc=d3e1474-107760 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=64827811&loc=d3e1361-107760 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721683-107760 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3A -URI http://asc.fasb.org/extlink&oid=64862545&loc=SL51724579-110230 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5C -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721675-107760 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 4A -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721663-107760 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64862545&loc=d3e2941-110230 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5B -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721673-107760 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 3A -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721659-107760 Reference 12: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5A -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721671-107760 Reference 13: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5D -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721677-107760 + Details
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