Federal corporate income tax rate effective January 1, 2018 from enactment of Tax Cuts and Jobs Acts.

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Assumed amount of deferred tax liability attributable to taxable temporary differences from non-Israeli subsidiaries'' undistributed earnings of subsidiaries and other recognized entities not within the country of domicile of the entity.

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Amount of deferred tax liability to be recognized in case of using the tax-exempt retained earnings, due to Approved Enterprise and Benefited Enterprise status.

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Corporate statutory tax rate on 2016.

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Corporate statutory tax rate on 2016 and thereafter.

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Corporate statutory tax rate on 2017.

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Corporate statutory tax rate on 2017 and thereafter.

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Corporate statutory tax rate on 2018 and thereafter.

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Corporate tax on cash dividends distributed from exempted profits.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of cash dividends out of retained earnings exempt from state, federal and other income tax.

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Withholding tax deduction from cash dividends distributed from benefited profits.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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Amount of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the country of domicile.

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Taxes on Income (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Line Items]
Tax rate	23.00%	24.00%	25.00%
Federal corporate income tax rate effective January 1, 2018	21.00%
Corporate tax on cash dividends distributed from exempted profits	25.00%
Withholding tax deduction from cash dividends distributed from benefited profits	20.00%
Non-Israeli subsidiaries' undistributed earnings for which Company has not provided for Israeli income and foreign withholding taxes	$ 6,701
Assumed deferred tax liability attributable to taxable temporary differences from non-Israeli subsidiaries'' undistributed earnings	838
Net operating loss carry-forwards	$ 900
Israel Tax Reform [Member]
Income Tax Disclosure [Line Items]
Corporate statutory tax rate on 2018 and thereafter	23.00%
Corporate statutory tax rate on 2017	24.00%
Corporate statutory tax rate on 2016	25.00%
Preferred Enterprise [Member] \| Development Area A [Member]
Income Tax Disclosure [Line Items]
Corporate statutory tax rate on 2017 and thereafter	7.50%
Corporate statutory tax rate on 2016	9.00%
Preferred Enterprise [Member] \| Rest Of Country [Member]
Income Tax Disclosure [Line Items]
Corporate statutory tax rate on 2016 and thereafter	16.00%
Beneficial Enterprise [Member]
Income Tax Disclosure [Line Items]
Tax exemption	$ 46,581	$ 50,356
Assumed income tax liability	$ 11,645	$ 12,589