Supplemental cash flow information (Tables)

9 Months Ended

Sep. 30, 2013

Supplemental Cash Flow Information [Abstract]

Supplemental Cash Flow Information

	Nine months ended September 30,
	2013		2012
Cash paid for:
Interest	$	11,293	$	10,220
Income/withholding taxes (1)	27,254		33,625
Non-cash investing activities:
Accrued capital costs	$	4,034	$	935

(1) We paid withholding taxes in Iceland of $18,067 and $22,633 in the nine months ended September 30, 2013 and 2012, respectively. Our tax payments in Iceland for withholding taxes, income taxes and associated refunds are denominated in Icelandic kronur ("ISK"). We expect to receive refunds of the withholding tax payments in the fourth quarters of 2013 and 2014. See Note 18 Subsequent events for additional information about withholding tax refunds.