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CAPITAL STOCK - Schedule of Stockholders' Equity Note, Warrants or Rights (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2018	Sep. 30, 2016
Class of Warrant or Right [Line Items]
Fair value of warrants	$ 610		$ 100
Share Purchase Warrants Denominated in United States Dollars
Class of Warrant or Right [Line Items]
Fair value of warrants		$ 7,396
Share Purchase Warrants Denominated in United States Dollars | March 14, 2019
Class of Warrant or Right [Line Items]
Exercise price of warrants (in dollars per share)	$ 3.20	$ 3.20
Number of warrants outstanding (in shares)	2,405,625	2,405,625
Fair value of warrants		$ 1,280
Share Purchase Warrants Denominated in United States Dollars | September 20, 2021
Class of Warrant or Right [Line Items]
Exercise price of warrants (in dollars per share)	$ 2.45	$ 2.45
Number of warrants outstanding (in shares)	4,167,480	4,167,480
Fair value of warrants		$ 6,116

X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(i)(4))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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- Definition

Number of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(i))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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Value of preferred stock and warrants for common stock issued.

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