Trade receivables and Prepayments and other receivables (Tables)

12 Months Ended

Dec. 31, 2017

Trade and other receivables [abstract]

Disclosure of detailed information about trade receivables and prepayments and other receivables [text block]

Amounts in US$ '000	2017		2016
Trade receivables		19,519		18,426
		19,519		18,426
To be recovered from co-venturers (Note 33)		2,455		3,311
Related parties receivables (Note 33)		56		42
Prepayments and other receivables		5,242		4,290
		7,753		7,643
Total		27,272		26,069
Classified as follows:
Current		27,037		25,828
Non current		235		241
Total		27,272		26,069

Disclosure of movements on the provision for impairment of trade and other receivables [text block]

Movements on the Group provision for impairment are as follows:

Amounts in US$ '000	2017		2016
At 1 January		741		596
Foreign exchange (income) loss		(147)		145
		594		741