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Shareholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2018
Stockholders' Equity Note [Abstract] |
Schedule of stock options activity |
|  | Number of options |  |  | Weighted average exercise price |  |  | Weighted average remaining contractual term (in years) |  |  | Aggregate intrinsic value |
Outstanding as of January 1, 2018 |  |  | 679,552 |  |  | $ | 13.20 |  |  |  | 3.35 |  |  | $ | 4,517 |
Granted |  |  | - |  |  |  | - |  |  |  |  |  |  |  |  |
Exercised |  |  | (215,542 | ) |  |  | 9.87 |  |  |  |  |  |  |  |  |
Expired and forfeited |  |  | (48,500 | ) |  |  | 15.76 |  |  |  |  |  |  |  |  |
Outstanding as of December 31, 2018 |  |  | 415,510 |  |  | $ | 14.62 |  |  |  | 2.69 |  |  | $ | 3 |
Vested and expected to vest at December 31, 2018 |  |  | 415,510 |  |  | $ | 14.62 |  |  |  | 2.69 |  |  | $ | 3 |
Exercisable as of December 31, 2018 |  |  | 159,058 |  |  | $ | 11.81 |  |  |  | 2.02 |  |  | $ | 3 |
Schedule of stock options under 2013 share option plan |
|  | Options outstanding at December 31, 2018 |  | Options exercisable at December 31, 2018
Exercise price |  | Number outstanding |  |  | Weighted average exercise price |  | Weighted average remaining contractual life |  | Number exercisable |  |  | Weighted average exercise price |  | Weighted average remaining contractual life
$ |  |  |  |  |  | $ |  | In years |  |  |  |  |  | $ |  | In years
6.00 |  |  | 2,250 |  |  | 6.00 |  | 0.56 |  |  | 2,250 |  |  | 6.00 |  | 0.56
11.12-14.52 |  |  | 259,558 |  |  | 11.86 |  | 2.22 |  |  | 156,808 |  |  | 11.89 |  | 2.05
18.90-19.85 |  |  | 153,702 |  |  | 19.42 |  | 3.52 |  |  | - |  |  | - |  | -
|  |  | 415,510 |  |  |  |  |  |  |  | 159,058 |  |  |  |  |
Schedule of RSUs activity |
|  | Number of RSUs |  |  | Weighted average remaining contractual term (in years) |  |  | Aggregate intrinsic value |
Outstanding as of January 1, 2018 |  |  | 240,054 |  |  |  | 1.74 |  |  | $ | 4,765 |
Granted |  |  | 32,700 |  |  |  |  |  |  |  |  |
Vested |  |  | (74,210 | ) |  |  |  |  |  |  |  |
Cancelled |  |  | (29,675 | ) |  |  |  |  |  |  |  |
Outstanding as of December 31, 2018 |  |  | 168,869 |  |  |  | 1.40 |  |  | $ | 1,253 |
Vested and expected to vest as of December 31, 2018 |  |  | 168,869 |  |  |  | 1.40 |  |  | $ | 1,253 |
Schedule of departmental allocation of share-based compensation charge |
|  | Year ended December 31, |
|  | 2018(*) |  |  | 2017(*) |  |  | 2016(*) |
Cost of revenues |  | $ | 112 |  |  | $ | 189 |  |  | $ | 118 |
Research and development, net |  |  | 808 |  |  |  | 473 |  |  |  | 625 |
Sales and marketing, net |  |  | 698 |  |  |  | 499 |  |  |  | 199 |
General and administrative |  |  | 503 |  |  |  | 1,055 |  |  |  | 1,529 |
|  | $ | 2,121 |  |  | $ | 2,216 |  |  | $ | 2,471 |
| (*) | Including $1,359, $1,335 and $1,331 of compensation cost related to RSUs for the year ended December 31, 2018, 2017 and 2016, respectively.

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