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Derivative Instruments (Change In Fair Value Of Derivative Instruments) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Mar. 31, 2014 | Mar. 31, 2013
Other Income Derivative Asset [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Change in Fair Value | $ 2,054 | $ (1,579)
Other Income Derivative Liability [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Change in Fair Value | $ (2,054) | $ 1,579

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- Definition Amount of gain (loss) from the increase (decrease) in fair value of derivative and nonderivative instruments designated as fair value hedging instruments recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 25 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration