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Benefit Plans And Obligations For Termination Indemnity (Tables)
 12 Months Ended
Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]  
Plans' Funded Status And Amounts Recognized In The Consolidated Financial Statements
                 
 
 
December 31,
 
    2012    
2011
  
Changes in benefit obligation:
 
  
 
 
  
 
Benefit obligation at beginning of year
 
$
 153,097
  
 
$
119,983
 
Service cost
 
 
9,709
  
 
 
8,205
 
Interest cost
 
 
     6,567
  
 
 
6,361
 
Exchange rate differences
 
 
        299
  
 
 
(508
 ) 
Actuarial losses
 
 
   10,747
  
 
 
21,313
 
Benefits paid
 
 
   (3,329
 ) 
 
 
(2,257
 ) 
Benefit obligation at end of year
 
$
 177,090
  
 
$
153,097
 
Changes in the Plans' Assets:
 
 
    
 
 
 
 
Fair value of Plans' assets at beginning of year
 
 
   81,780
  
 
 
69,493
 
Actual return on Plans' assets (net of expenses)
 
 
   11,002
  
 
 
(722
)
Employer contribution
 
 
   12,341
  
 
 
15,266
 
Benefits paid
 
 
(3,329
 ) 
 
 
(2,257
)
Fair value of Plans' assets at end of year
 
$
 101,794
  
 
$
81,780
 
Accrued benefit cost, end of year:
 
 
    
 
 
 
 
Funded status
 
 
(75,296
 ) 
 
 
(71,317
)
Unrecognized net actuarial loss
 
 
  63,178
  
 
 
60,650
 
Unrecognized prior service cost
 
 
       498
  
 
 
584
 
 
 
$
 (11,620
 ) 
 
$
(10,083
)
Amount recognized in the statement of financial position:
 
 
    
 
 
 
 
Accrued benefit liability, current
 
 
        (85)
  
 
 
(85
)
Accrued benefit liability, non-current
 
 
 (75,211
 ) 
 
 
(71,232
)
Accumulated other comprehensive income, pre-tax
 
 
  63,676
  
 
 
61,234
 
Net amount recognized
 
$
 (11,620
 ) 
 
$
(10,083
)
Components Of Net Periodic Pension Cost
                         
 
 
Year ended December 31,
 
 
 
2012
 
 
2011
 
 
2010
 
Components of the Plans' net periodic pension cost:
 
 
 
 
 
 
 
 
 
Service cost                                                                              
 
$
  9,709
  
 
$
8,205
 
 
$
7,031
 
Interest cost                                                                              
 
 
  6,567
  
 
 
6,361
 
 
 
5,858
 
Expected return on  Plans' assets                                                                              
 
 
 (6,400
 ) 
 
 
(5,512
)
 
 
(4,914
)
Amortization of prior service cost
 
 
     172
  
 
 
104
 
 
 
95
 
Amortization of transition amount
 
 
    (131
 ) 
 
 
(147
)
 
 
(130
)
Amortization of net actuarial loss                                                                              
 
 
  4,107
  
 
 
1,988
 
 
 
1,769
 
Total net periodic benefit cost                                                                              
 
$
14,023
  
 
$
10,999
 
 
$
9,709
 
Additional information
 
 
 
 
 
 
 
 
 
 
 
 
Accumulated benefit obligation                                                                              
 
$
167,667
  
 
$
144,682
 
 
$
112,643
 
Weighted Average Assumptions
                 
 
 
December 31,
 
 
 
2012
 
 
2011
 
Weighted average assumptions:                
Discount rate as of December 31                                                                                           
 
 
4.1
 %   
 
4.4
%
Expected long-term rate of return on Plans' assets                                                                                           
 
 
7.0
 %  
 
7.3
%
Rate of compensation increase                                                                                           
 
 
2.2
 %  
 
2.4
%
Asset Allocation By Category
                 
 
 
2012
 
 
2011
 
Asset Category:
 
 
 
 
 
 
Equity Securities                                                                         
 
 
  57.5
 %
 
 
56.8
%
Debt Securities                                                                         
 
 
  34.8
 %
 
 
36.1
%
Other                                                                         
 
 
    7.7
 %
 
 
7.1
%
Total                                                                         
 
 
100.0
 %
 
 
100.0
%
Target Asset Allocation For The Plan
                 
 
 
2012
 
 
2011
 
Asset Category:
 
 
 
 
 
 
Equity Securities                                                                         
 
 
     50
 %
 
 
56.0
%
Debt Securities                                                                         
 
 
     40
 %
 
 
41.2
%
Other                                                                         
 
 
     10
 %
 
 
2.8
%
Total                                                                         
 
 
100.0
 %
 
 
100.0
%
Fair Value Of The Asset Values By Category
        Quoted        
        Prices in        
        Active        
        Markets for   Significant    Significant
        Identical Observable    Unobservable 
        Assets   Inputs   Inputs
Asset Category   Total   (Level 1)   (Level 2)   (Level 3)
Cash $ 38 $ 38 $ - $ -
Cash Equivalents:                
Money Market Funds (a)   4,153   4,153   -   -
Fixed Income Securities:                
Mutual Funds (b)   36,618   36,618   -   -
Equity Securities:                
International Companies (c)   1,554   1,554   -   -
Mutual Funds (d)   47,091   47,091   -   -
Other   12,340   12,340        
Total $ 101,794 $ 101,794 $   $ -

 

(a) This category includes highly liquid daily traded cash-like vehicles.

(b) This category invests in highly liquid diverse mutual funds representing a diverse offering of debt issuance.

(c) This change represents common stocks of companies domiciled outside of the U.S.; they can be represented by ordinary shares or ADRs.

(d) This category represents highly liquid diverse equity mutual funds of varying asset classes and styles.
Retiree Medical Plan [Member]
  
Defined Benefit Plan Disclosure [Line Items]  
Plans' Funded Status And Amounts Recognized In The Consolidated Financial Statements
                 
 
 
December 31,
 
 
 
2012
 
 
2011
 
Change in Benefit Obligation:
 
 
 
 
 
 
Benefit obligation at beginning of period
 
$
3,145
  
 
$
2,914
 
Service cost
 
 
299
  
 
 
253
 
Interest cost
 
 
117
  
 
 
151
 
Actuarial (gain) loss
 
 
(688
 ) 
 
 
(63
)
Employee contribution
 
 
17
  
 
 
19
 
Benefits paid
 
 
(107
 ) 
 
 
(129
)
Benefit obligation at end of period
 
$
2,781
  
 
$
3,145
 
 
 
 
    
 
 
 
 
Change in Plan Assets:
 
 
    
 
 
 
 
Fair value of plan assets at beginning of period
 
$
-
  
 
$
-
 
Employer contribution
 
 
90
  
 
 
110
 
Employee contribution
 
 
17
  
 
 
19
 
Benefits paid
 
 
(107
 ) 
 
 
(129
)
Fair value of plan assets at end of period
 
$
-
  
 
$
-
 
 
  
Year ended December 31,
  
 
  
2012
    
2011
  
Accrued benefit cost, end of period:
  
 
    
 
  
Funded status
   $ (2,781 )   $ (3,145 )
Unrecognized net actuarial loss
     246       455  
Unrecognized prior service cost
     -       -  
Accrued benefit cost, end of period
   $ (2,535 )   $ (2,690 )
Amounts recognized in the statement of financial position:
                
Accrued benefit liability, current
   $ (175 )   $ (111 )
Accrued benefit liability, non-current
     (2,606 )     (3,034 )
Accumulated other comprehensive loss, pretax
     246       455  
Net amount recognized
   $ (2,535 )   $ (2,690 )
                 
Components of net periodic pension cost (for period):
 
    
 
  
Service cost
   $ 299     $ 253  
Interest cost
     117       151  
Amortization of prior service cost
     12       74  
Amortization of net actuarial loss
     -       22  
Total net periodic benefit cost
   $ 428     $ 500  
Assumptions as of end of period:
          
 Discount rate
     3.78 %     3.78 %
 Health care cost trend rate assumed for next year
     8.00 %     8.50 %
 Ultimate health care cost trend rate
    5.00 %     5.00 %
Effect Of A 1% Change In The Health Care Cost Trend Rate
                 
 
 
1% increase
 
 
1% decrease
 
Net periodic benefit cost
 
$
53
 
 
$
(46
)
Benefit obligation
 
$
244
 
 
$
(216
)