Other intangible assets (Tables)

6 Months Ended

Jun. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of other intangible assets

Other intangible assets consist of the following as of June 30, 2017:

	Favorable lease assets	Internet sites	Trade names	Total
	$'000	$'000	$'000	$'000
Carrying amount:
Balance at January 1, 2017	8,501	1,658	7,579	17,738
Additions	—	—	6,100	6,100
Foreign currency translation adjustment	94	97	124	315
Balance at June 30, 2017	8,595	1,755	13,803	24,153
Accumulated amortization:
Balance at January 1, 2017	2,636	1,225		3,861
Charge for the period	184	84		268
Foreign currency translation adjustment	33	72		105
Balance at June 30, 2017	2,853	1,381		4,234
Net book value:
At June 30, 2017	5,742	374	13,803	19,919
At December 31, 2016	5,865	433	7,579	13,877