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Derivative Instruments (Change In Fair Value Of Derivative Instruments) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Non-hedging interest rate derivatives: | Derivative Assets | Other Income |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Change in Fair Value | $ (1,897) | $ 2,244 | $ (3,315) | $ (15,846)
Non-hedging interest rate derivatives: | Derivative Assets | Other Expense |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Change in Fair Value | 6 | 0 | 30 | 0
Non-hedging interest rate derivatives: | Derivative Liabilities | Other Income |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Change in Fair Value | 1,897 | (2,317) | 3,315 | 16,181
Derivatives designated as hedges of fair value: | Derivative Assets | Other Income |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Change in Fair Value | (3) | 0 | 6 | 0
Derivatives designated as hedges of fair value: | Derivative Liabilities | Other Income |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Change in Fair Value | 0 | 6 | 0 | 10
Hedged item - derivative asset | Derivatives designated as hedges of fair value: | Derivative Assets |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Change in Fair Value | $ 0 | $ (45) | $ 3 | $ 119

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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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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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