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20. STOCK OPTIONS (Tables) | 12 Months Ended
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Dec. 31, 2017
Stock Options Tables |
Stock options continuity |
|  |  |  |  |  |  |  |  | Weighted-
|  |  |  |  |  |  |  |  | Average
|  |  |  |  |  |  |  |  | Exercise
|  |  |  |  |  |  | Number of |  | Price per
|  |  |  |  |  |  | Common |  | Share
|  |  |  |  |  |  | Shares |  | (CAD$)
Stock options outstanding - beginning of period |  |  |  | 6,938,179 | $ | 1.06
Granted |  |  |  |  |  |  | 6,459,400 |  | 0.85
Exercises (1) |  |  |  |  |  |  | (128,873) |  | 0.70
Expiries |  |  |  |  |  |  | (1,300,556) |  | 1.19
Forfeitures |  |  |  |  |  |  | (168,500) |  | 0.71
Stock options outstanding - end of period |  |  |  | 11,799,650 | $ | 0.94
Stock options exercisable - end of period |  |  |  |  |  | 4,486,625 | $ | 1.12
Stock options outstanding |
|  |  |  |  | Weighted |  |  |  | Weighted-
|  |  |  |  | Average |  |  |  | Average
|  |  |  |  | Remaining |  |  |  | Exercise
Range of Exercise |  |  |  |  | Contractual |  | Number of |  | Price per
Prices per Share |  |  |  |  | Life |  | Common |  | Share
(CAD$) |  |  |  |  | (Years) |  | Shares |  | (CAD$)
Stock options outstanding |  |  |  |  |  |
$ 0.50 to $ 0.99 |  | 3.90 |  | 8,789,650 | $ | 0.79
$ 1.00 to $ 1.19 |  |  |  |  | 2.19 |  | 1,265,000 |  | 1.09
$ 1.20 to $ 1.39 |  |  |  |  | 0.20 |  | 827,000 |  | 1.30
$ 1.40 to $ 1.99 |  |  |  |  | 1.18 |  | 918,000 |  | 1.82
Stock options outstanding - end of period |  |  |  | 3.25 |  | 11,799,650 | $ | 0.94
Fair value of options granted assumptions |
|  | 2017 |  | 2016
Risk-free interest rate |  | 0.11% - 1.44% |  | 0.57% - 0.69%
Expected stock price volatility |  | 47.02% - 47.77% |  | 43.07% - 43.98%
Expected life |  | 3.4 to 3.5 years |  | 3.4 to 3.6 years
Estimated forfeiture rate |  | 2.94% - 4.14% |  | 3.46% - 3.97%
Expected dividend yield |  | – |  | –
Fair value per share under options granted | CAD$0.21 - CAD$0.29 |  | CAD$0.21 - CAD$0.22

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