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Share Capital (Tables) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2018 | Dec. 31, 2017
Equity [Abstract] |  |
Summary of Stock Option Activity | A summary of the Company’s option activity related to options to employees and directors, and related information is as follows:
|  | For the nine months ended September 30, 2018 |
|  | Number of stock options |  |  | Weighted average exercise price |  |  | Aggregate intrinsic value |
Outstanding at beginning of period |  |  | 414,965 |  |  | $ | 11.70 |  |  | $ | 1,859 |
Granted |  |  | 10,000 |  |  |  | 9 |  |  |  | - |
Exercised |  |  | (2,487) |  |  |  | - |  |  |  | - |
Cancelled |  |  | - |  |  |  | - |  |  |  | - |
Outstanding at end of period |  |  | 422,478 |  |  | $ | 11.70 |  |  | $ | 729 |
Vested and expected-to-vest at end of period |  |  | 228,758 |  |  | $ | 7.80 |  |  | $ | 729 |
|  | For the year ended December 31, 2017(*) |
|  | Number of stock options |  |  | Weighted average exercise price |  |  | Aggregate intrinsic value |
Outstanding at beginning of period |  |  | 174,328 |  |  | $ | 1.95 |  |  | $ | 3,739 |
Granted |  |  | 272,090 |  |  |  | 16.50 |  |  |  | - |
Exercised |  |  | (31,453) |  |  |  | - |  |  |  | - |
Cancelled |  |  | - |  |  |  | - |  |  |  | - |
Outstanding at end of period |  |  | 414,965 |  |  | $ | 11.70 |  |  | $ | 1,859 |
Vested and expected-to-vest at end of period |  |  | 142,875 |  |  | $ | 1.95 |  |  | $ | 1,375 |
(*) | December 31, 2017 options data represents the number of shares adjusted to retroactively reflect the 1:15 Reverse Split effected on September 4, 2018.
| A summary of the Company’s option activity related to options to employees and directors, and related information is as follows:
|  | For the year ended December 31, 2017(**) |
|  | Number of stock options |  |  | Weighted average exercise price |  |  | Aggregate intrinsic value |
Outstanding at beginning of period |  |  | 174,328 |  |  | $ | 1.95 |  |  | $ | 3,739 |
Granted |  |  | 272,090 |  |  |  | 16.5 |  |  |  | - |
Exercised |  |  | (31,453 | ) |  |  | - |  |  |  | - |
Cancelled |  |  | - |  |  |  | - |  |  |  | - |
|  |  | 414,965 |  |  | $ | 11.7 |  |  | $ | 1,859 |
Outstanding at end of period |  |  | 142,875 |  |  | $ | 1.95 |  |  | $ | 1,375 |
Vested and expected-to-vest at end of period |  |  | 174,328 |  |  | $ | 1.95 |  |  | $ | 3,739 |
|  | For the year ended December 31, 2016(**) |
|  | Number of stock options |  |  | Weighted average exercise price |  |  | Aggregate intrinsic value |
Outstanding at beginning of period |  |  | 77,846 |  |  | $ | 4.2 |  |  |  | - |
Granted |  |  | 96,482 |  |  |  | (*) |  |  |  | - |
Exercised |  |  | - |  |  |  | - |  |  |  | - |
Cancelled |  |  | - |  |  |  | - |  |  |  | - |
Outstanding at end of period |  |  | 174,328 |  |  | $ | 1.95 |  |  | $ | 15,624 |
Vested and expected-to-vest at end of period |  |  | 174,328 |  |  | $ | 1.95 |  |  | $ | 15,624 |
(*) Less than 1 (**) December 31 2017 and 2016 options data represents the number of shares adjusted to retroactively reflect the 1:15 Reverse Split effected on September 4, 2018.
Schedule of Stock Options Outstanding | The stock options outstanding as of September 30, 2018 and December 31, 2017, separated by exercise prices, are as follows:
Exercise price $ |  |  | Stock options outstanding as of September 30, 2018 |  |  | Stock options outstanding as of December 31, 2017(**) |  |  | Weighted average remaining contractual life – years as of September 30, 2018 |  |  | Weighted average remaining contractual life – years as of December 31, 2017(**) |  |  | Stock options exercisable as of September 30, 2018 |  |  | Stock options exercisable as of December 31, 2017(**) |
| 4.20 |  |  |  | 77,846 |  |  |  | 77,846 |  |  |  | 7.25 |  |  |  | 8.00 |  |  |  | 77,846 |  |  |  | 77,846 |
| 15.75 |  |  |  | 133,546 |  |  |  | 133,546 |  |  |  | 9.00 |  |  |  | 9.75 |  |  |  | 46,117 |  |  |  | - |
| 9.00 |  |  |  | 10,000 |  |  |  | - |  |  |  | 10.00 |  |  |  | - |  |  |  | - |  |  |  | - |
| 19.35 |  |  |  | 72,508 |  |  |  | 72,508 |  |  |  | 9.00 |  |  |  | 9.75 |  |  |  | 23,565 |  |  |  | - |
| 15.30 |  |  |  | 66,036 |  |  |  | 66,036 |  |  |  | 9.25 |  |  |  | 10.00 |  |  |  | 18,688 |  |  |  | - |
| (*) |  |  |  | 62,542 |  |  |  | 65,029 |  |  |  | 8.00 |  |  |  | 8.75 |  |  |  | 62,542 |  |  |  | 65,029 |
|  |  |  |  | 422,478 |  |  |  | 414,965 |  |  |  | 8.55 |  |  |  | 9.3 |  |  |  | 228,758 |  |  |  | 142,875 |
| (*) | Less than $0.01.
| (**) | December 31, 2017 options data represents the number of shares adjusted to retroactively reflect the 1:15 Reverse Split effected on September 4, 2018.
| The stock options outstanding as of December 31, 2017 and December 31, 2016, separated by exercise prices, are as follows:
Exercise price |  |  | Stock options outstanding as of December 31, (**) |  |  | Weighted average remaining contractual life – years as of December 31, (**) |  |  | Stock options exercisable as of December 31, (**) |
$ |  |  | 2017 |  |  | 2016 |  |  | 2017 |  |  | 2016 |  |  | 2017 |  |  | 2016 |
| 4.2 |  |  |  | 77,846 |  |  |  | 77,846 |  |  |  | 8.0 |  |  |  | 8.0 |  |  |  | 77,846 |  |  |  | 77,846 |
| 15.75 |  |  |  | 133,546 |  |  |  | - |  |  |  | 9.75 |  |  |  | - |  |  |  | - |  |  |  | - |
| 19.35 |  |  |  | 72,508 |  |  |  | - |  |  |  | 9.75 |  |  |  | - |  |  |  | - |  |  |  | - |
| 15.3 |  |  |  | 66,036 |  |  |  | - |  |  |  | 10 |  |  |  | - |  |  |  | - |  |  |  | - |
| (* | ) |  |  | 65,029 |  |  |  | 96,482 |  |  |  | 8.75 |  |  |  | 9.5 |  |  |  | 65,029 |  |  |  | 96,482 |
|  |  |  |  | 414,965 |  |  |  | 174,328 |  |  |  | - |  |  |  | - |  |  |  | 142,875 |  |  |  | 174,328 |
(*) Less than 1 (**) December 31 2017 and 2016 options data represents the number of shares adjusted to retroactively reflect the 1:15 Reverse Split effected on September 4, 2018.
Schedule of Stock Options Valuation Assumptions | The fair value of the stock options is estimated at the date of grant using Black-Scholes options pricing model with the following weighted-average assumptions:
|  | Nine months ended September 30, 2018 |  |  | Year ended December 31, 2017 |
Expected volatility |  |  | 99.4% |  |  |  | 122.5% |
Risk-free interest |  |  | 2.39% |  |  |  | 1.64% |
Dividend yield |  |  | 0% |  |  |  | 0% |
Expected life of up to (years) |  |  | 5.24 |  |  |  | 6.25 |
| The fair value of the stock options is estimated at the date of grant using Black-Scholes options pricing model with the following weighted-average assumptions:
|  | Years ended December 31, |
|  | 2017 |  |  | 2016 |
Expected volatility |  |  | 122.5 | % |  |  | 77.3 | %
Risk-free interest |  |  | 1.64 | % |  |  | 0.6 | %
Dividend yield |  |  | 0 | % |  |  | 0 | %
Expected life of up to (years) |  |  | 6.25 |  |  |  | 5.0 |

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