Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Income Taxes (Narrrative) (Details)

v3.7.0.1
Income Taxes (Narrrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Unrecognized tax benefits   $ 18,000 $ 13,930 $ 8,552 $ 10,346    
Accrued interest and penalties related to uncertain tax positions   $ 384          
Statutory tax rates   25.00% 26.50% 26.50%      
Privileged enterprise benefits rate   25.00%          
Tax-exempt income   $ 180,000          
Change in corporate tax rate, amount incurred   $ 18,000          
Reduced Corporate Tax Rate           7.00% 12.50%
Increased Corporate Tax Rate         16.00%   9.00%
Decrease In Tax Rates In Year Thereafter           16.00%  
Special Preferred Enterprise Of Reduced Tax Rates 1   20.00%     8.00% 15.00% 15.00%
Special Preferred Enterprise Of Reduced Tax Rates 2   5.00%     5.00%   10.00%
Special Preferred Enterprise Benefits Period             10 years
Deferred tax asset   $ 139,914 $ 87,718        
Valuation allowance of deferred tax assets   $ 201,376 $ 152,115        
Foreign ownership percentage basis for determining tax rate   90.00%          
Special Preferred Enterprise Tax Exempt Period   10 years          
Approved enterprise and beneficiary enterprise income tax exempt or taxable rate   10.00%          
Dividend withholding tax rate   15.00%          
Subsidiaries [Member]              
Operating losses carryforwards   $ 382,000          
Deferred tax asset   140,000          
Deferred tax liability   150,600          
Operating losses carry-forwards, resulting from tax deductions related to shared-based compensation   $ 7,500          
United States [Member]              
Statutory tax rates   35.00%          
Israel [Member]              
Statutory tax rates   25.00% 26.50% 26.50%      
EffectiveIncome Tax Rate Reconciliation at Federal Statutory Income Tax Rate for Next and Thereafter Year   2.30%          
Israel [Member] | Subsequent Event [Member]              
Statutory tax rates 24.00%            
HONG KONG              
Statutory tax rates   16.50%          
GERMANY              
Statutory tax rates   28.00%          
Minimum [Member]              
Foreign ownership percentage basis for determining tax rate   10.00%          
Maximum [Member]              
Foreign ownership percentage basis for determining tax rate   25.00%          
Dividend withholding tax rate   30.00%