Interest expense (Tables)

6 Months Ended

Jun. 30, 2015

Other Income and Expenses [Abstract]

Balances in interest expense

The balances in interest expense are as follows:

	Three months ended			Six months ended
	June 30, 2015		June 30, 2014	June 30, 2015		June 30, 2014
	$’000		$’000	$’000		$’000
Interest expense on long-term debt and obligations under capital lease	6,682		7,565	13,652		15,617
Withholding tax provision classified as interest	(1,000	)	—	(1,000	)	—
Amortization of deferred financing costs and discount on secured term loan	798		956	1,443		2,439
Total interest expense	6,480		8,521	14,095		18,056