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Shareholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2017
Shareholders' Equity [Abstract] |
Schedule of Company's stock options plans |
|  |  | Number of options |  |  | Weighted average exercise price |  |  | Weighted average remaining contractual term (in years) |  |  | Aggregate intrinsic value |
| Outstanding as of January 1, 2017 |  |  | 624,437 |  |  |  | 10.47 |  |  |  | 3.55 |  |  | $ | 4,576 |
| Granted |  |  | 179,002 |  |  |  | 19.48 |  |  |  |  |  |  |  |  |
| Exercised |  |  | (109,487 | ) |  |  | 8.13 |  |  |  |  |  |  |  |  |
| Expired and forfeited |  |  | (14,400 | ) |  |  | 11.29 |  |  |  |  |  |  |  |  |
| Outstanding as of December 31, 2017 |  |  | 679,552 |  |  |  | 13.20 |  |  |  | 3.35 |  |  | $ | 4,517 |
| Vested and expected to vest at December 31, 2017 |  |  | 679,552 |  |  |  | 13.20 |  |  |  | 3.35 |  |  | $ | 4,517 |
| Exercisable as of December 31, 2017 |  |  | 254,850 |  |  |  | 10.31 |  |  |  | 2.35 |  |  | $ | 2,431 |
Schedule of stock options under 2013 share option plan |
|  |  | Options outstanding at December 31, 2017 |  |  | Options exercisable at December 31, 2017 |
| 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 |
| 2.71-3.90 |  |  | 25,000 |  |  |  | 3.21 |  |  |  | 0.95 |  |  |  | 25,000 |  |  |  | 3.21 |  |  |  | 0.95 |
| 5.35-8.60 |  |  | 47,800 |  |  |  | 6.87 |  |  |  | 1.58 |  |  |  | 47,800 |  |  |  | 6.87 |  |  |  | 1.58 |
| 10.49 – 14.52 |  |  | 427,750 |  |  |  | 11.87 |  |  |  | 3.15 |  |  |  | 182,050 |  |  |  | 12.19 |  |  |  | 2.74 |
| 18.90-19.85 |  |  | 179,002 |  |  |  | 19.48 |  |  |  | 4.62 |  |  |  | - |  |  |  | - |  |  |  | - |
|  |  |  | 679,552 |  |  |  |  |  |  |  |  |  |  |  | 254,850 |  |  |  |  |  |  |  |  |
Schedule of RSUs under the Company's 2013 share option plan |
|  |  | Number of RSUs |  |  | Weighted average remaining contractual term (in years) |  |  | Aggregate intrinsic value |
| Outstanding as of January 1, 2017 |  |  | 193,150 |  |  |  | 2.02 |  |  | $ | 3,438 |
| Granted |  |  | 105,428 |  |  |  |  |  |  |  |  |
| Vested |  |  | (52,724 | ) |  |  |  |  |  |  |  |
| Cancelled |  |  | (5,800 | ) |  |  |  |  |  |  |  |
| Outstanding as of December 31, 2017 |  |  | 240,054 |  |  |  | 1.74 |  |  | $ | 4,765 |
| Vested and expected to vest as of December 31, 2017 |  |  | 240,054 |  |  |  | 1.74 |  |  | $ | 4,765 |
Summary of departmental allocation of share-based compensation charge |
|  |  | Year ended December 31, |
|  |  | 2017(*) |  |  | 2016(*) |  |  | 2015(*) |
| Cost of revenues |  | $ | 189 |  |  | $ | 118 |  |  | $ | 33 |
| Research and development, net |  |  | 473 |  |  |  | 625 |  |  |  | 529 |
| Sales and marketing, net |  |  | 499 |  |  |  | 199 |  |  |  | 380 |
| General and administrative |  |  | 1,055 |  |  |  | 1,529 |  |  |  | 467 |
|  |  | $ | 2,216 |  |  | $ | 2,471 |  |  | $ | 1,409 |
| (*) | Including $1,335, $1,331 and $342 of compensation cost related to RSUs for the year ended December 31, 2017, 2016 and 2015, respectively.

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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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