Equity - Summary of Weighted Average Assumptions Used for Valuation of Share Options Granted (Details) - yr	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Abstract]
Risk-free interest rate	1.20%	1.00%
Expected life of options	4.5	5
Annualized volatility	75.40%	73.00%
Forfeiture rate	2.20%	2.20%
Dividend rate	0.00%	0.00%

Expected forfeiture rate of options granted.

No definition available.

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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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2016-01-13
-Paragraph 47
-Subparagraph a
-Clause i
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2016-03-30&anchor=para_47_a_i&doctype=Standard
-URIDate 2016-03-31

+ Details

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- Definition

The option life of share options granted.

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+ Details

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- Definition

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]]

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+ Details

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- References

No definition available.

+ Details

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- Definition

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

+ References

+ Details

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