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Supplemental Cash Flow Information (Tables) | 9 Months Ended
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Sep. 30, 2017
Supplemental Cash Flow Elements [Abstract] |
Supplemental Cash Flow Information |
|  | Nine Months Ended September 30, |
|  | 2017 |  |  | 2016 |
|  | (in thousands) |
Net cash provided from operating activities included: |  |  |  |  |  |  |  |
Income taxes paid to (refunded from) taxing authorities |  | $ | 98 |  |  | $ | (101 | )
Interest paid |  |  | 136,863 |  |  |  | 134,583 |
Non-cash investing and financing activities included: |  |  |  |  |  |  |  |
Increase in asset retirement costs capitalized |  |  | 6,460 |  |  |  | 4,655 |
Increase in accrued capital expenditures |  |  | 52,289 |  |  |  | 12,523 |

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- References No definition available. + Details
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