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SHARE CAPITAL AND SHARE-BASED PAYMENTS (Details 2) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Weighted average assumptions:
Risk-free interest rate	1.68%	1.88%
Expected dividend yield	0.00%	0.00%
Expected option life (years)	3 years 6 months 18 days	3 years 5 months 16 days
Expected stock price volatility	61.61%	61.47%
Stock options [Member]
Weighted average assumptions:
Risk-free interest rate	1.27%	2.25%	1.80%
Expected dividend yield	0.00%	0.00%	0.00%
Expected option life (years)	5 years	5 years	5 years
Expected stock price volatility	59.01%	60.26%	68.24%
Weighted average fair value at grant date	$ 0.40	$ 0.53	$ 1.14

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- Definition

The expected volatility of the share price used to calculate the fair value of the share options granted. Expected volatility is a measure of the amount by which a price is expected to fluctuate during a period. The measure of volatility used in option pricing models is the annualised standard deviation of the continuously compounded rates of return on the share over a period of time.

+ References

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The implied yield currently available on zero-coupon government issues of the country in whose currency the exercise price for share options granted is expressed, with a remaining term equal to the expected term of the option being valued (based on the option's remaining contractual life and taking into account the effects of expected early exercise). [Refer: Government [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2018-01-01
-Paragraph 47
-Subparagraph a
-Clause i
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The percentage of an expected dividend used to calculate the fair value of share options granted.

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