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Discontinued Operations (Tables) | 12 Months Ended
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Dec. 31, 2016
Discontinued Operations and Disposal Groups [Abstract] |
Summarized Results from Discontinued Operations | Summarized results from discontinued operations were as follows:
| For the Year
| 2016 |  | 2015 |  | 2014
Revenues | $ | 5,862 |  |  | $ | 43,845 |  |  | $ | 68,610 |
Cost of oil and gas producing activities | (6,578 | ) |  | (221,402 | ) |  | (94,581 | )
Other operating expenses | (7,754 | ) |  | (10,363 | ) |  | (14,357 | )
Loss from discontinued operations before income taxes | $ | (8,470 | ) |  | $ | (187,920 | ) |  | $ | (40,328 | )
Gain (loss) on sale of assets before income taxes | (13,664 | ) |  | (706 | ) |  | 8,526 |
Income tax benefit | 5,269 |  |  | 2,496 |  |  | 12,193 |
Loss from discontinued operations, net of taxes | $ | (16,865 | ) |  | $ | (186,130 | ) |  | $ | (19,609 | )
Disposal Groups, Including Discontinued Operations | The major classes of assets and liabilities of discontinued operations at year-end 2016 and 2015 are as follows:
| At Year-End
| 2016 |  | 2015
| (In thousands)
Assets of Discontinued Operations: |  |  |
Receivables, net of allowance for bad debt | $ | 6 |  |  | $ | 4,632 |
Oil and gas properties and equipment, net | — |  |  | 79,733 |
Goodwill and other intangible assets | — |  |  | 19,673 |
Prepaid expenses | 8 |  |  | 96 |
Other assets | — |  |  | 833 |
| $ | 14 |  |  | $ | 104,967 |
Liabilities of Discontinued Operations: |  |  |
Accounts payable | $ | 67 |  |  | $ | 342 |
Accrued property taxes | — |  |  | 259 |
Other accrued expenses | 5,228 |  |  | 8,924 |
Other liabilities | — |  |  | 1,667 |
| $ | 5,295 |  |  | $ | 11,192 |
Significant Operation and Investing Activities of DIscontinued Operations | Significant operating activities and investing activities of discontinued operations are as follows:
| For the Year
| 2016 |  | 2015 |  | 2014
| (In thousands)
Operating activities: |  |  |  |  |
Asset impairments | $ | 612 |  |  | $ | 105,337 |  |  | $ | 15,535 |
Dry hole and unproved leasehold impairment charges | — |  |  | 67,639 |  |  | 29,528 |
Loss (gain) on sale of assets | 13,664 |  |  | 706 |  |  | (8,526 | )
Depreciation, depletion and amortization | 2,202 |  |  | 28,391 |  |  | 28,758 |
| $ | 16,478 |  |  | $ | 202,073 |  |  | $ | 65,295 |
Investing activities: |  |  |  |  |
Oil and gas properties and equipment | $ | (579 | ) |  | $ | (49,717 | ) |  | $ | (101,145 | )
Acquisition of oil and gas properties | — |  |  | — |  |  | (1,100 | )
Proceeds from sales of assets | 77,105 |  |  | 17,800 |  |  | 17,660 |
| $ | 76,526 |  |  | $ | (31,917 | ) |  | $ | (84,585 | )

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