Accumulated other comprehensive loss (Tables)

12 Months Ended

Dec. 31, 2017

Equity [Abstract]

Schedule of changes in accumulated other comprehensive income/(loss) by component

Changes in accumulated other comprehensive income/(loss) (“AOCI”) by component (net of tax) for the years ended December 31, 2017 and 2016 were as follows:

	Foreign currency translation adjustments		Derivative financial instruments		Pension liability		Total
	$’000		$’000		$’000		$’000
Balance at January 1, 2016	(326,070	)	(4,091	)	(9,943	)	(340,104	)
Other comprehensive loss before reclassifications, net of tax benefit of $(809), $(889) and $(530)	(10,983	)	(1,942	)	(2,119	)	(15,044	)
Amounts reclassified from AOCI, net of tax provision of $Nil, $1,111 and $Nil	—		2,809		—		2,809
Net current period other comprehensive (loss)/income	(10,983	)	867		(2,119	)	(12,235	)
Balance at December 31, 2016	(337,053	)	(3,224	)	(12,062	)	(352,339	)
Other comprehensive income/(loss) before reclassifications, net of tax benefit of $Nil, ($50) and $73	48,095		(121	)	310		48,284
Amounts reclassified from AOCI, net of tax provision of $Nil, $860 and $Nil	692		2,041		—		2,733
Net current period other comprehensive income	48,787		1,920		310		51,017
Balance at December 31, 2017	(288,266	)	(1,304	)	(11,752	)	(301,322	)

Schedule of reclassifications out of AOCI

Reclassifications out of AOCI (net of tax) were as follows:

	Amount reclassified from AOCI
	December 31, 2017	December 31, 2016
Details about AOCI components	$’000	$’000	Affected line item in the statement of operations
Foreign currency translation adjustments:
Reclassification upon sale of operating unit	692	—	(Loss)/gain on disposal of property, plant and equipment and equity method investments
Derivative financial instruments:
Cash flows from derivative financial instruments related to interest payments made for the hedged debt instrument	2,041	2,809	Interest expense
Total reclassifications for the period	2,733	2,809