BORROWINGS (Schedule of Carrying Value of Exchangeable Notes) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Borrowings [abstract]
Exchangeable senior notes	$ 92,955	$ 92,232	$ 91,514
Total value of embedded derivatives - liability	2,230	4,260
Total non-current liabilities	$ 95,185	$ 96,492

The amount of non-current derivative financial liabilities. [Refer: Derivative financial liabilities]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 55
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_55&doctype=Standard
-URIDate 2017-03-09

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant