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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 | Supplemental cash flow information was as follows:
| Nine months ended September 30,
| 2017 |  | 2016
| (In thousands)
Interest paid | $ | 99,889 |  |  | 100,903 |
Income taxes paid | 10,596 |  |  | 12,250 |
Changes in accounts payable related to purchases of revenue earning equipment | (63,184 | ) |  | (107,177 | )
Operating and revenue earning equipment acquired under capital leases | 6,209 |  |  | 947 |

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