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Derivative Instruments And Hedging Activities (Summary Of Fair Value Of Derivative Instruments) (Details) (Interest Rate Swap Contracts [Member], Other Liabilities [Member], USD $) In Thousands, unless otherwise specified | Jun. 30, 2012 | Dec. 31, 2011
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Interest Rate Swap Contracts [Member] | Other Liabilities [Member] |  |
Derivative [Line Items] |  |
Derivatives designated as hedging instruments under GAAP, Fair Value | $ 633 | $ 580

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- Definition Aggregate fair value of all derivative liabilities designated as hedging instruments. Includes instruments designated as cash flow hedges, fair value hedges, and hedges of net investments in foreign operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13433-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 107 -Paragraph 10 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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: | credit
Period Type: | instant

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- Details
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Period Type: | duration