Supplemental cash flow information (Tables)

12 Months Ended

Dec. 31, 2013

Supplemental Cash Flow Elements [Abstract]

Schedule of supplemental cash flow information

	2013	2012	2011
Year ended December 31,	$’000	$’000	$’000
Cash paid for:
Interest	27,320	29,756	37,233
Income taxes, net of refunds	22,275	28,967	16,413