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Taxes on Income (Details Textual) $ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 22, 2017 | Aug. 31, 2013 | Dec. 31, 2017 USD ($) | Dec. 31, 2016 | Dec. 31, 2015
Income Taxes (Textual) |  |  |  |  |
Income tax rate |  |  | 24.00% | 25.00% | 26.50%
Tax loss carry forward |  |  | $ 32,576 |  |
Capital loss |  |  | 716 |  |
Net change in total valuation allowance |  |  | $ 556 |  |
Tax credit carryforward, description |  | The tax rate on preferred income from a preferred enterprise in 2014-2016 will be 9% in certain areas in Israel ("Development Area A") and 16% in other areas. In 2017 the tax rate at Development Area A was reduced to 7.5%. |  | The corporate income tax rate to 24% (instead of 25%) effective from January 1, 2017 and to 23% effective from January 1, 2018. |
Subject to tax at a rate |  |  | 4.00% |  |
Companies foreign currency exchange rate |  |  | 90 |  |
U.S. subsidiary [Member] |  |  |  |  |
Income Taxes (Textual) |  |  |  |  |
Income tax rate |  |  | 35.00% |  |
Tax credit carryforward, description | US federal corporate tax rate decrease from 35% to 21% effective for tax years beginning after December 31, 2017 |  | Such losses are available to offset any future U.S. taxable income of the U.S. subsidiary and will expire in the years 2018-2026 for federal tax purposes and in the years 2018-2025 for state tax purposes. |  |
Indian subsidiary [Member] |  |  |  |  |
Income Taxes (Textual) |  |  |  |  |
Income tax rate |  |  | 30.00% |  |
Brazilian subsidiary [Member] |  |  |  |  |
Income Taxes (Textual) |  |  |  |  |
Income tax rate |  |  | 34.00% |  |
Tax loss carry forward |  |  | $ 3,551 |  |
Maximum offset percentage of taxable income for tax period |  |  | 30.00% |  |
State tax [Member] | U.S. subsidiary [Member] |  |  |  |  |
Income Taxes (Textual) |  |  |  |  |
Tax loss carry forward |  |  | $ 93 |  |
Federal [Member] | U.S. subsidiary [Member] |  |  |  |  |
Income Taxes (Textual) |  |  |  |  |
Tax loss carry forward |  |  | $ 8,183 |  |
Development area A [Member] |  |  |  |  |
Income Taxes (Textual) |  |  |  |  |
Income tax rate |  |  | 7.50% |  |
Other areas [Member] |  |  |  |  |
Income Taxes (Textual) |  |  |  |  |
Income tax rate |  |  | 12.00% |  |

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