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Pension Plan (Schedule Of Measurement Dates) (Details) | 12 Months Ended
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Dec. 31, 2011 | Dec. 31, 2010
Benefit Obligations [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Measurement Dates | 12/31/2011 | 12/31/2010
Fair Value Of Plan Assets [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Measurement Dates | 12/31/2011 | 12/31/2010

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- Definition The date(s) used to measure (at least the majority of) plan assets and benefit obligations for defined benefit pension and other postretirement benefit plans. Disclosure required by FAS 132R paragraph 5k prior to being amended by FAS 158. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph k -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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Balance Type: | na
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