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Benefit Plans And Obligations For Termination Indemnity (Narrative) (Details) (USD $) | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract] |  |  |
Eligibility age for normal retirement benefit plan, in years | 65 years |  |
Lump sum based on employee contribution percentage to certain breakpoint | 2.00% |  |
Additional percentage exceeding the breakpoint | 6.00% |  |
Maximum percentage of pensionable salary | 5.00% |  |
Maximum employer contributions, in years | 40 years |  |
Expected benefit payments, 2014 | $ 4,736,000 |  |
Expected benefit payments, 2015 | 5,371,000 |  |
Expected benefit payments, 2016 | 5,961,000 |  |
Expected benefit payments, 2017 | 6,641,000 |  |
Expected benefit payments, 2018 | 7,477,000 |  |
Total expense | 4,712,000 | 4,436,000 | 4,356,000
Salary and bonus defer percentage under the plan | 100.00% |  |
Amount on the dollar ESA matches up to 10% of employees total salary | 0.50 |  |
ESA offers, maximum percentage | 10.00% |  |
Participant contributions transferred into the plan | 880,000 | 742,000 | 441,000
ESA contribution to the plan | 155,000 |  |
Cash surrender value of the life insurance policies | 4,342,000 |  |
Non-qualified defined contribution plan liabilitiy | 4,647,000 |  |
Plan assets of life insurance policies, cash surrender | 2,585,000 |  |
Related liability, pension payments | $ 3,225,000 |  |

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- Definition Eligibility Age For Normal Retirement Benefit Plan, In Years + References No definition available. + Details
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- Definition Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 17 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 4 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6812-107765 + Details
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- Definition Amount of benefits expected to be paid in the second fiscal year following the latest fiscal year from a defined benefit plan. + 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 (f) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
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