Derivative Instruments (Fair Value Of Derivative Instruments) (Details) - Not Designated as Hedging Instrument - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
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

Fair value of the assets less the liabilities of a derivative or group of derivatives.

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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Balance Type:	debit
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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

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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.

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