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Supplemental cash flow information (Tables) | 3 Months Ended
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Mar. 31, 2014
Supplemental Cash Flow Information [Abstract] |
Supplemental Cash Flow Information |
| Three months ended March 31,
| 2014 | 2013
Cash paid for: |  |
Interest | $ | 131 |  | $ | 108 |
Income/withholding taxes (1) | 1,846 |  | 10,625 |
Non-cash investing activities: |  |
Accrued capital costs | $ | 4,619 |  | $ | 456 |
(1) | We paid withholding taxes in Iceland of $8,259 during the three months ended March 31, 2013. Our tax payments in Iceland for withholding taxes, income taxes and any associated refunds are denominated in Icelandic kronur ("ISK").

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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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