OPERATING LEASES - The Group as lessor (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
The Group as lessor
Lease term	20 years
Non-cancellable operating lease receivables	$ 3,638	$ 4,313	$ 3,563
Within one year
The Group as lessor
Non-cancellable operating lease receivables	224	195	196
In the second to fifth years inclusive
The Group as lessor
Non-cancellable operating lease receivables	896	780	782
More than five years
The Group as lessor
Non-cancellable operating lease receivables	$ 2,518	$ 3,338	$ 2,585

The amount of future minimum lease payments receivable under non-cancellable operating leases. Minimum lease payments are payments over the lease term that the lessee is or can be required to make, excluding contingent rent, costs for services and taxes to be paid by, and reimbursed to, the lessor, together with: (a) for a lessee, any amounts guaranteed by the lessee or by a party related to the lessee; or (b) for a lessor, any residual value guaranteed to the lessor by: (i) the lessee; (ii) a party related to the lessee; or (iii) a third party unrelated to the lessor that is financially capable of discharging the obligations under the guarantee.

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 a
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=17&date=2018-03-02&anchor=para_56_a&doctype=Standard&book=b
-URIDate 2018-03-16

Name:	ifrs-full_MinimumLeasePaymentsReceivableUnderNoncancellableOperatingLease
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant