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Supplemental cash flow information (Tables) | 12 Months Ended
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Dec. 31, 2014
Supplemental Cash Flow Information [Abstract] |
Supplemental Cash Flow Information |
| Year Ended December 31,
| 2014 | 2013 | 2012
Cash paid for: |  |  |  |
Interest | $ | 19,066 |  | $ | 20,539 |  | $ | 20,212 |
Income/withholding taxes (1) | 12,189 |  | 28,654 |  | 41,455 |
Non-cash investing activities: |  |  |  |  |  |
Accrued capital costs | $ | 744 |  | $ | 9,409 |  | $ | (683 | )
(1) | We paid withholding taxes in Iceland on intercompany dividends of $5,491, $18,067 and $22,633 during the years ended December 31, 2014, 2013 and 2011, respectively. Our tax payments in Iceland for withholding taxes, income taxes and any associated refunds are denominated in ISK.

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