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Commitments and Contingent Liabilities (Details Textual) ₪ in Thousands, $ in Thousands |  | 12 Months Ended
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Dec. 04, 2018 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2018 ILS (₪) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($)
Commitments and Contingent Liabilities (Textual) |  |  |  |  |
Royalty commitments, Description |  | The Company is required to pay royalties at the rate of 3.5% of sales of products developed with funds provided by the OCS, up to an amount equal to 100% of the research and development grants (dollar-linked) received from the OCS | The Company is required to pay royalties at the rate of 3.5% of sales of products developed with funds provided by the OCS, up to an amount equal to 100% of the research and development grants (dollar-linked) received from the OCS |  |
Lease expenses |  | $ 550 |  | $ 515 | $ 417
Outstanding contingent obligation to pay royalties |  | 3,779 |  |  |
Litigation settlement amount | $ 500,000 | 222,000 |  |  |
Pre-paid last instalments |  | 377 |  | $ 578 |
Settlement Agreement [Member] |  |  |  |  |
Commitments and Contingent Liabilities (Textual) |  |  |  |  |
Contributed the deductible amount |  | 35 |  |  |
Motor vehicles [Member] |  |  |  |  |
Commitments and Contingent Liabilities (Textual) |  |  |  |  |
Pre-paid last instalments |  | $ 82 |  |  |
NIS [Member] |  |  |  |  |
Commitments and Contingent Liabilities (Textual) |  |  |  |  |
Litigation settlement amount | $ 1,800,000 |  | ₪ 850,000 |  |

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- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41499-112717 + Details
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