LEASES - Lease Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Lease liabilities [Roll Forward]
Balance, beginning of year	$ 3,792	$ 4,310
Lease payments	(4,883)	(1,265)
Lease liabilities assumed on acquisition	119,568	0
Additions	2,857	264
Terminations	(594)	0
Unrealized foreign exchange loss	71	204
Interest expense	1,904	279
Balance, end of year	$ 122,715	$ 3,792

The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 16
-IssueDate 2020-01-01
-Paragraph 47
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2020-en-r&anchor=para_47_b&doctype=Standard
-URIDate 2020-01-01

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