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Benefit Plans And Obligations For Termination Indemnity (Fair Value Of The Asset Values By Category) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]      
Fair value of the asset $ 115,242 $ 101,794 $ 81,780
Money Market Funds
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of the asset 3,459 [1]    
Mutual Funds
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of the asset 39,613 [2]    
International Companies
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of the asset 2,356 [3]    
Mutual Funds
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of the asset 56,447 [4]    
Other Asset
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of the asset 13,367    
Quoted Prices In Active Markets For Identical Assets (Level 1)
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of the asset 115,242    
Quoted Prices In Active Markets For Identical Assets (Level 1) | Money Market Funds
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of the asset 3,459 [1]    
Quoted Prices In Active Markets For Identical Assets (Level 1) | Mutual Funds
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of the asset 39,613 [2]    
Quoted Prices In Active Markets For Identical Assets (Level 1) | International Companies
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of the asset 2,356 [3]    
Quoted Prices In Active Markets For Identical Assets (Level 1) | Mutual Funds
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of the asset 56,447 [4]    
Quoted Prices In Active Markets For Identical Assets (Level 1) | Other Asset
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of the asset 13,367    
Significant Observable Inputs (Level 2)
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of the asset 0    
Significant Observable Inputs (Level 2) | Money Market Funds
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of the asset 0 [1]    
Significant Observable Inputs (Level 2) | Mutual Funds
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of the asset 0 [2]    
Significant Observable Inputs (Level 2) | International Companies
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of the asset 0 [3]    
Significant Observable Inputs (Level 2) | Mutual Funds
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of the asset 0 [4]    
Significant Observable Inputs (Level 2) | Other Asset
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of the asset 0    
Significant Unobservable Inputs (Level 3)
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of the asset 0    
Significant Unobservable Inputs (Level 3) | Money Market Funds
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of the asset 0 [1]    
Significant Unobservable Inputs (Level 3) | Mutual Funds
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of the asset 0 [2]    
Significant Unobservable Inputs (Level 3) | International Companies
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of the asset 0 [3]    
Significant Unobservable Inputs (Level 3) | Mutual Funds
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of the asset 0 [4]    
Significant Unobservable Inputs (Level 3) | Other Asset
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of the asset $ 0    
[1] This category includes highly liquid daily traded cash-like vehicles.
[2] This category invests in highly liquid diverse mutual funds representing a diverse offering of debt issuance.
[3] This category represents common stocks of companies domiciled outside of the U.S.; they can be represented by ordinary shares or ADRs.
[4] This category represents highly liquid diverse equity mutual funds of varying asset classes and styles.