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Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2017
Significant Accounting Policies [Abstract] |
Schedule of annual rates of depreciation |
|  |  |  | % |
| Computers and electronic equipment |  |  | 15 - 33 |
| Office furniture and equipment |  |  | 6 - 33 |
| Leasehold improvements |  |  | At the shorter of the lease period or useful life of the leasehold improvement |
Schedule of fair value for options granted |
|  |  | 2017 |  |  | 2016 |  |  | 2015 |
| Dividend yield |  |  | 0 | % |  |  | 0 | % |  |  | 0 | %
| Expected volatility |  |  | 46.4%-55.9 | % |  |  | 50.7%-59.4 | % |  |  | 51.4%-62 | %
| Risk-free interest |  |  | 1.6%-2.1 | % |  |  | 0.8%-1.4 | % |  |  | 0.6%-1.7 | %
| Expected life (in years) |  |  | 3.43-4.76 |  |  |  | 2.79-4.99 |  |  |  | 2.39-4.58 |

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- Definition Tabular disclosure of the depreciation rates of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. + References No definition available. + Details
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- References No definition available. + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + 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 (f)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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