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FINANCIAL INSTRUMENTS (Details 3) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Statement Line Items [Line Items]
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%
Financial instruments [member]
Statement Line Items [Line Items]
Risk-free interest rate	1.71%	1.67%
Expected dividend yield	0.00%	0.00%
Expected option life (years)	2 years 11 months 12 days	3 years
Expected stock price volatility	106.79%	108.41%
Weighted average fair value at grant date	$ 0.23	$ 0.15

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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

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The percentage of an expected dividend used to calculate the fair value of share options granted.

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