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Supplemental cash flow information
6 Months Ended
Jun. 30, 2012
Supplemental Cash Flow Information [Abstract]  
Supplemental cash flow information
Supplemental cash flow information

 
Six months ended June 30,
 
2012
2011
Cash paid for:
 
 
Interest
$
10,108

$
11,148

Income/withholding taxes (1)
16,809

27,685

(1)
We paid withholding taxes in Iceland of $9,484 and $26,900 in the six months ended June 30, 2012 and 2011, respectively. Our tax payments in Iceland for withholding taxes, estimated and prepayments of Icelandic income taxes and any associated refunds are denominated in ISK.