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Supplemental cash flow information (Tables) | 6 Months Ended
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Jun. 30, 2017
Supplemental Cash Flow Elements [Abstract] |
Supplemental cash flow information |
| Six months ended June 30,
| 2017 |  | 2016
Cash paid for: |  |  |
Interest | $ | 9,903 |  |  | $ | 9,701 |
Income taxes, net | 1,796 |  |  | 6,316 |

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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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