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CAPITAL STOCK - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands		9 Months Ended
	Feb. 20, 2020	Sep. 30, 2021	Dec. 31, 2020
Class of Warrant or Right [Line Items]
Common stock, shares, issued (in shares)		154,494,078	134,311,033
IPO
Class of Warrant or Right [Line Items]
Common stock, shares, issued (in shares)	11,300,000
Price per share (in USD per share)	$ 1.47
Sale of stock, consideration received	$ 15,140
At The Market Sale Of Stock
Class of Warrant or Right [Line Items]
Sale of stock, consideration received		$ 92,120
Sale of stock, number of shares issued (in shares)		15,030,000.00
September 20, 2021 Expiration Date | Share Purchase Warrants Denominated in United States Dollars
Class of Warrant or Right [Line Items]
Exercise price of warrants (in dollars per share)		$ 2.45
Number of warrants outstanding (in shares)		0

X

- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21475-112644

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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- Definition

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