BASIS OF PREPARATION AND SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Disclosure of basis of preparation and significant accounting policies [Abstract]
Group leases of low value assets	$ 5,000
Group lease expense	3,000	$ 3,000
Outstanding commitments on lease	$ 25,700	$ 22,100

The amount of contingent rents recognised as income for operating leases. [Refer: Contingent rents recognised as income]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2019-01-01
-Name IAS
-Number 17
-IssueDate 2018-01-01
-Paragraph 56
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=17&date=2018-03-02&anchor=para_56_b&doctype=Standard&book=b
-URIDate 2018-03-16

Name:	ifrs-full_ContingentRentsRecognisedAsIncomeClassifiedAsOperatingLease
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration