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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
Cash paid for: |  |  |
Interest | $ | 9,951 |  |  | $ | 9,893 |
Income taxes, net | 3,467 |  |  | 10,245 |

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- Definition Tabular disclosure of supplemental cash flow information for the periods presented. + References No definition available. + Details
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- References No definition available. + Details
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