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Supplemental Cash Flow Information Supplemental Cash Flow Information (Tables) | 12 Months Ended
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Dec. 31, 2016
Supplemental Cash Flow Information [Abstract] |
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] | The following table presents non-cash financing and investing activities and other cash flow information:
| Year ended December 31,
Non-cash financing and investing activities: | 2016 |  | 2015 |  | 2014
Capital lease obligations | $ | 32,243 |  |  | $ | 4,123 |  |  | $ | 24,879 |
Non-cash extinguishment of senior notes | 10,616 |  |  | 53,373 |  |  | — |
Non-cash acquisitions and related deferred taxes | — |  |  | 297,821 |  |  | — |
Other cash flow information: |  |  |  |  |
Interest paid | $ | 41,976 |  |  | $ | 42,264 |  |  | $ | 30,691 |
Income taxes paid | 17,181 |  |  | 1,937 |  |  | 20,198 |

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