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Supplemental Cash Flow Information (Tables) | 12 Months Ended
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Dec. 31, 2018
Supplemental Cash Flow Elements [Abstract] |
Summary of cash paid for interest and income taxes |
| Year Ended December 31,
(In thousands) | 2018 |  | 2017 |  | 2016
Cash paid for interest and income taxes |  |  |  |  |
Interest | $ | 80,069 |  |  | $ | 79,846 |  |  | $ | 86,723 |
Income taxes | 4,635 |  |  | 40,626 |  |  | 688 |

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