Trade receivables and Prepayments and other receivables (Tables)

12 Months Ended

Dec. 31, 2018

Trade and other receivables [abstract]

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

Amounts in US$ '000	2018		2017
Trade receivables		16,215		19,519
		16,215		19,519
To be recovered from co-venturers (Note 33)		1,819		2,455
Related parties receivables (Note 33)		-		56
Prepayments and other receivables		7,889		5,242
		9,708		7,753
Total		25,923		27,272
Classified as follows:
Current		25,704		27,037
Non-current		219		235
Total		25,923		27,272

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	2018			2017
At 1 January		594			741
Foreign exchange income		(48	)		(147	)
		546			594