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Taxes on Income (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Income Tax Disclosure [Line Items] |  |  |
Tax rate | 26.50% | 26.50% | 25.00%
Corporate tax on cash dividends distributed from exempted profits |  |  | 25.00%
Withholding tax deduction from cash dividends distributed from benefited profits | 20.00% | 20.00% | 15.00%
Non-Israeli subsidiaries' undistributed earnings for which Company has not provided for Israeli income and foreign withholding taxes | $ 1,846 |  |
Assumed deferred tax liability attributable to taxable temporary differences from non-Israeli subsidiaries'' undistributed earnings | $ 231 |  |
Research And Development Center [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Number of years of tax exemption |  | 2 years |
Maximum percent of taxable income for the plan |  | 25.00% |
Number of years of benefited tax rate under the alternative benefits method for the research and development center |  | 8 years |
Israel Tax Reform [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Corporate statutory tax rate on 2016 and thereafter | 25.00% |  |
Preferred Enterprise [Member] | Development Area A [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Corporate statutory tax rate on 2015 and thereafter | 9.00% |  |
Preferred Enterprise [Member] | Rest Of Country [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Corporate statutory tax rate on 2015 and thereafter | 16.00% |  |
Beneficial Enterprise [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Tax exemption | $ 44,742 | $ 44,892 |
Assumed income tax liability | $ 11,186 | $ 11,223 |

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