Transactions in Soles (Tables)

12 Months Ended

Dec. 31, 2017

Disclosure of Transactions in Soles [Abstract]

Disclosure of Detailed Information Of Assets And Liabilities Denominated In Foreign Currency [Text Block]

As of December 31, 2017 and 2016, the Group presents the following assets and liabilities originally denominated in Soles by its equivalent in U.S. dollars:

	2017		2016
	US$(000)		US$(000)

Assets
Cash and cash equivalents		6,233		6,332
Trade and other receivables		138,487		148,907
Income tax credit		24,779		24,962
Prepaid expenses		1,182		92
		170,681		180,293

Liabilities
Bank loans		(1,215)		-
Trade and other payables		(87,839)		(130,772)
Income tax payable		(7,088)		(7,262)
Provisions		(35,572)		(11,203)
		(131,714)		(149,237)

Net asset position		38,967		31,056