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Supplemental cash flow information (Tables) | 3 Months Ended
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Mar. 31, 2016
Supplemental Cash Flow Elements [Abstract] |
Supplemental cash flow information |
| Three months ended March 31,
| 2016 | 2015
Cash paid for: |  |
Interest | $ | 160 |  | $ | 5 |
Income taxes | 2,596 |  | 1,142 |
Non-cash investing activities: |  |
Accrued capital costs | $ | 206 |  | $ | 1,202 |

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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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