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Benefit Plans And Obligations For Termination Indemnity (Tables) | 12 Months Ended
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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 | )

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- Definition Tabular disclosure of the major categories of plan assets of pension plans and/or other employee benefit plans. This information may include, but is not limited to, the target allocation of plan assets, the fair value of each major category of plan assets, and the level within the fair value hierarchy in which the fair value measurements fall. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(5) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of the assumptions used to determine for pension plans and/or other employee benefit plans the benefit obligation and net benefit cost, including assumed discount rates, rate increase in compensation increase, and expected long-term rates of return on plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of the change in the benefit obligation of pension plans and/or other employee benefit plans from the beginning to the end of the period, showing separately, if applicable, the effects of the following: service cost, interest cost, contributions by plan participants, actuarial gains and losses, foreign currency exchange rate changes, benefits paid, plan amendments, business combinations, divestitures, curtailments, settlements, and special and contractual termination benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of the effect of a one-percentage-point increase and the effect of a one-percentage-point decrease in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs and the accumulated postretirement benefit obligation for health care benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (m) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920 + Details
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