Supplemental cash flow information (Tables)

3 Months Ended

Mar. 31, 2017

Supplemental Cash Flow Elements [Abstract]

Schedule of supplemental cash flow information

	Three months ended
	March 31, 2017	March 31, 2016
	$’000	$’000
Cash paid during the period for:
Interest	6,600	6,313
Income taxes, net of refunds	4,328	4,931