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CONVERTIBLE DEBENTURES (Tables) | 12 Months Ended
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Dec. 31, 2018
Statement [LineItems] |
Summary of Detailed Information about Convertible Debentures |
|  | December 31, 2018 |  |  | December 31, 2017 |
2016 Debentures (a) |  | $ | 72,481,375 |  |  | $ | 90,742,373 |
2017 Debentures (b) |  |  | 65,709,509 |  |  |  | 80,627,593 |
Convertible Debentures |  | $ | 138,190,884 |  |  | $ | 171,369,966 |
2016 Debentures [member] |
Statement [LineItems] |
Summary of Detailed Information about Convertible Debentures Fair Value and Interest Components |
|  | December 31, 2018 |  |  | December 31, 2017 |
Fair value of 2016 Debentures, beginning of period |  | $ | 90,742,373 |  |  | $ | 70,811,801 |
Fair value adjustment during the period |  |  | (18,260,998 | ) |  |  | 19,930,572 |
Interest payable |  |  | 354,480 |  |  |  | 350,900 |
2016 Debentures and interest payable |  | $ | 72,835,855 |  |  | $ | 91,093,273 |
Less: interest payable included in accounts payable & accrued liabilities |  |  | (354,480 | ) |  |  | (350,900 | )
2016 Debentures, end of period |  | $ | 72,481,375 |  |  | $ | 90,742,373 |
Summary of Detailed Information about Convertible Debentures, Valuation Assumptions | The inputs used in the 2016 Debentures pricing model as at December 31, 2018 and December 31, 2017 are as follows:
|  | December 31, 2018 |  |  | December 31, 2017 |
Volatility |  |  | 38 | % |  |  | 39.00 | %
Expected life in years |  |  | 3.56 years |  |  |  | 4.56 years |
Risk free interest rate |  |  | 2.58 | % |  |  | 2.23 | %
Expected dividend yield |  |  | 0 | % |  |  | 0 | %
Credit spread |  |  | 25.79 | % |  |  | 25.35 | %
Underlying share price of the Company |  | $ | 2.41 |  |  | $ | 3.21 |
Conversion exercise price |  | US$ | 2.3261 |  |  | US$ | 2.3261 |
Exchange rate (C$:US$) |  | $ | 0.7330 |  |  | $ | 0.7971 |
2017 Debentures [member] |
Statement [LineItems] |
Summary of Detailed Information about Convertible Debentures Fair Value and Interest Components |
|  | December 31, 2018 |  |  | December 31, 2017 |
Fair value of 2017 Debentures, beginning of period |  | $ | 80,627,593 |  |  | $ | 73,035,180 |
Fair value adjustment during the period |  |  | (14,918,084 | ) |  |  | 7,592,413 |
Interest payable |  |  | 354,480 |  |  |  | 350,900 |
2017 Debentures and interest payable |  | $ | 66,063,989 |  |  | $ | 80,978,493 |
Less: interest payable included in accounts payable & accrued liabilities |  |  | (354,480 | ) |  |  | (350,900 | )
2017 Debentures, end of period |  | $ | 65,709,509 |  |  | $ | 80,627,593 |
Summary of Detailed Information about Convertible Debentures, Valuation Assumptions | The inputs used in the 2017 Debentures pricing model as at December 31, 2018 and December 31, 2017 are as follows:
|  | December 31, 2018 |  |  | December 31, 2017 |
Volatility |  |  | 38 | % |  |  | 39.00 | %
Expected life in years |  |  | 3.56 years |  |  |  | 4.56 years |
Risk free interest rate |  |  | 2.58 | % |  |  | 2.23 | %
Expected dividend yield |  |  | 0 | % |  |  | 0 | %
Credit spread |  |  | 25.79 | % |  |  | 25.35 | %
Underlying share price of the Company |  | $ | 2.41 |  |  | $ | 3.21 |
Conversion exercise price |  | US$ | 2.6919 |  |  | US$ | 2.6919 |
Exchange rate (C$:US$) |  | $ | 0.7330 |  |  | $ | 0.7971 |

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