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Derivative Instruments (Fair Value Of Derivative Instruments) (Details) - Non-hedging interest rate derivatives: - USD ($) $ in Thousands | Jun. 30, 2019 | Dec. 31, 2018
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Customer Counterparties Loan Interest Rate Swap Assets | Other Assets |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | $ 384,643 | $ 132,146
Derivative, Fair Value | 16,275 | 3,131
Customer Counterparties Loan Interest Rate Swap Liabilities | Other Liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 95,486 | 372,223
Derivative, Fair Value | 1,838 | 13,774
Financial Institution Counterparties Loan Interest Rate Swap Asset | Other Assets |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 95,486 | 403,500
Derivative, Fair Value | 1,838 | 13,902
Financial Institution Counterparties Loan Interest Rate Swap Liabilities | Other Liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 390,054 | 132,146
Derivative, Fair Value | $ 16,303 | $ 3,131

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition Fair value of the assets less the liabilities of a derivative or group of derivatives. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13433-108611 + 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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