20. STOCK OPTIONS (Details 2) - yr	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
Disclosure of range of exercise prices of outstanding share options [line items]
Expected dividend yield	0.00%	0.00%
Fair value per share under options granted	CAD$0.21 - CAD$0.29	CAD$0.21 - CAD$0.22
Minimum
Disclosure of range of exercise prices of outstanding share options [line items]
Risk-free interest rate	0.11%	0.57%
Expected stock price volatility	47.02%	43.07%
Expected life	3.4	3.4
Estimated forfeiture rate	2.94%	3.46%
Maximum
Disclosure of range of exercise prices of outstanding share options [line items]
Risk-free interest rate	1.44%	0.69%
Expected stock price volatility	47.77%	43.98%
Expected life	3.5	3.6
Estimated forfeiture rate	4.14%	3.97%

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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

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- Definition

The option life of share options granted.

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- Definition

The description of inputs to option pricing model for share options granted that the entity does not disclose separately. [Refer: Option pricing model [member]]

+ References

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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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Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

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No definition available.

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- Definition

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

+ References

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