The interest rate on borrowings. [Refer: Borrowings]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 7
-IssueDate 2018-01-01
-Paragraph 7
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_7&doctype=Standard
-URIDate 2018-03-16

Name:	ifrs-full_BorrowingsInterestRate
Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical)	Dec. 31, 2018	Dec. 31, 2017	Aug. 03, 2016
5% Convertible Debentures
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate	5.00%	5.00%
7% Convertible Debentures
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate	7.00%		7.00%