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Significant Accounting Policies (Schedule Of Assets And Liabilities Measured At Fair Value On Recurring Basis) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Quoted Prices In Active Markets For Identical Assets (Level 1)
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total $ 5,919 $ 12,620
Quoted Prices In Active Markets For Identical Assets (Level 1) | Government Bonds
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets 5,919 12,620
Quoted Prices In Active Markets For Identical Assets (Level 1) | Corporate Bonds
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets 0 0
Quoted Prices In Active Markets For Identical Assets (Level 1) | Foreign Currency Derivative And Option Contracts
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets 0 0
Liabilities 0 0
Quoted Prices In Active Markets For Identical Assets (Level 1) | Cross Currency Interest Rate Swaps
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets 0 0
Significant Observable Inputs (Level 2)
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total 103,545 79,602
Significant Observable Inputs (Level 2) | Government Bonds
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets 0 0
Significant Observable Inputs (Level 2) | Corporate Bonds
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets 45,157 37,441
Significant Observable Inputs (Level 2) | Foreign Currency Derivative And Option Contracts
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets 5,000 24,738
Liabilities (4,766) (4,992)
Significant Observable Inputs (Level 2) | Cross Currency Interest Rate Swaps
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets 58,154 22,415
Significant Unobservable Inputs (Level 3)
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total      
Significant Unobservable Inputs (Level 3) | Government Bonds
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets 0 0
Significant Unobservable Inputs (Level 3) | Corporate Bonds
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets 0 0
Significant Unobservable Inputs (Level 3) | Foreign Currency Derivative And Option Contracts
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets 0 0
Liabilities      
Significant Unobservable Inputs (Level 3) | Cross Currency Interest Rate Swaps
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets $ 0 $ 0