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Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2019
Accounting Policies [Abstract] |
Schedule of property, plant and equipment depreciation rates |
|  | % |  |
Computers and software |  | 20 - 33 |  | (Mainly 33)
Office furniture and equipment |  | 6 - 15 |  | (Mainly 6)
Leasehold improvements |  | Over the shorter of the period of the lease or the life of the assets |  |
Motor vehicles |  | 15 |  |
Schedule of weighted average assumptions used in valuation of stock option |
|  | Year ended December 31, |
|  | 2019 |  |  | 2018 |  |  | 2017 |
Risk-free interest |  |  | 1.52 | % |  |  | 2.73 | % |  |  | 2.05 | %
Dividend yields |  |  | 0 |  |  |  | 0 |  |  |  | 0 |
Volatility |  |  | 55 | % |  |  | 55 | % |  |  | 57 | %
Expected option term |  |  | 3.5 years |  |  |  | 3.5 years |  |  |  | 3.5 years |
Forfeiture rate |  |  | 0 | % |  |  | 0 | % |  |  | 0 | %

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- Definition Schedule Of Property Plan And Equipment Depreciation Rates [Table Text Block] + 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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