Short Term Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Subclassifications of assets, liabilities and equities [abstract]
Short-term investments (Note 10)	$ 111,946	$ 117,776
Short-term investments, cost	20,419	36,826
Short-term investments, accumulated unrealized holding gains	$ 91,527	$ 80,950

The amount of current financial assets available-for-sale. [Refer: Financial assets available-for-sale; Current financial assets]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2021-01-01
-Name IFRS
-Number 7
-IssueDate 2020-01-01
-Paragraph 8
-Subparagraph d
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_8_d&doctype=Standard&book=b
-URIDate 2020-01-01

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