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Derivative Instruments (Fair Value Of Derivative Instruments) (Details) - Not Designated as Hedging Instrument - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
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Customer Counterparties Loan Interest Rate Swap Assets | Other Assets |  |
Derivatives, Fair Value [Line Items] |  |
Notional Amount | $ 647,613 | $ 377,534
Fair Value | 52,364 | 16,094
Customer Counterparties Loan Interest Rate Swap Liabilities | Other Liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Notional Amount | 37,721 | 189,803
Fair Value | 562 | 3,214
Financial Institution Counterparties Loan Interest Rate Swap Asset | Other Assets |  |
Derivatives, Fair Value [Line Items] |  |
Notional Amount | 37,721 | 189,803
Fair Value | 562 | 3,214
Financial Institution Counterparties Loan Interest Rate Swap Liabilities | Other Liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Notional Amount | 661,866 | 382,566
Fair Value | 52,607 | $ 16,133
Interest Rate Swap [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Notional Amount | $ 150,000 |

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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=121572278&loc=d3e13433-108611 + Details
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- Definition Nominal or face amount used to calculate payment on derivative. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5579245-113959 + 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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