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Supplemental cash flow information | 6 Months Ended
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Jun. 30, 2015
Supplemental Cash Flow Information [Abstract] |
Supplemental cash flow information | Supplemental cash flow information
| Six months ended June 30,
| 2015 | 2014
Cash paid for: |  |
Interest | $ | 9,388 |  | $ | 9,554 |
Income/withholding taxes (1) | 12,581 |  | 6,640 |
Non-cash investing activities: |  |
Accrued capital costs | $ | 2,570 |  | $ | 5,107 |
(1) | We paid withholding taxes of $8,388 and $2,789 in Iceland on intercompany dividends during the six months ended June 30, 2015 and 2014, respectively. Our tax payments in Iceland for withholding taxes, income taxes and any associated refunds are denominated in Icelandic kronur ("ISK").
In April 2015, we issued shares of common stock to certain employees to settle performance unit liabilities, net of withholding taxes of $1,516.

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- Definition The entire disclosure for supplemental cash flow activities, including cash, noncash, and part noncash transactions, for the period. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586 + Details
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