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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