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Taxes on Income (Tables) | 12 Months Ended
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Dec. 31, 2017
Income Tax Disclosure [Abstract] |
Schedule of Deferred Income Taxes |
|  | December 31, |
|  | 2017 |  |  | 2016 |  |  | 2015 |
In respect of: |  |  |  |  |  |  |  |  |  |  |  |
Net operating loss carry forward |  | $ | 5,844 |  |  | $ | 3,280 |  |  | $ | 3,691 |
Deferred Rent |  |  | 46 |  |  |  | - |  |  |  | - |
Research and Development expenses |  |  | 2,887 |  |  |  | - |  |  |  | 742 |
Stock-based compensation |  |  | 897 |  |  |  | - |  |  |  | - |
Issuance Costs |  |  | 1,261 |  |  |  | - |  |  |  | - |
In-Process R&D |  |  | 761 |  |  |  | 806 |  |  |  | — |
Accrued expenses |  |  | 5 |  |  |  | - |  |  |  | - |
Other |  |  | 24 |  |  |  | 72 |  |  |  | 66 |
Less—valuation allowance |  |  | (11,725 | ) |  |  | (4,158 | ) |  |  | (4,499 | )
Net deferred tax assets |  | $ | — |  |  | $ | — |  |  | $ | — |
Schedule of Change in Valuation Allowance | The change in valuation allowance for the years ended December 31, 2017 and 2016 were as follows:
|  | 2017 |  |  | 2016 |  |  | 2015 |
Balance at the beginning of the year |  | $ | (4,158 | ) |  | $ | (4,499 | ) |  | $ | (2,551 | )
Changes during the year |  |  | (7,567 | ) |  |  | 341 |  |  |  | (1,948 | )
Balance at the end of the year |  | $ | (11,725 | ) |  | $ | (4,158 | ) |  | $ | (4,499 | )

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- Definition Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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- Definition Tabular disclosure of valuation allowances to reduce deferred tax assets to net realizable value, including identification of the deferred tax asset more likely than not will not be fully realized and the corresponding amount of the valuation allowance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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