Derivative Instruments (Fair Value Of Derivative Instruments) (Details) - Non-hedging interest rate derivatives: - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Customer Counterparties Loan Interest Rate Swap Assets \| Other Assets
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	$ 235,217	$ 132,146
Derivative, Fair Value	6,475	3,131
Customer Counterparties Loan Interest Rate Swap Liabilities \| Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	275,227	372,223
Derivative, Fair Value	7,007	13,774
Financial Institution Counterparties Loan Interest Rate Swap Asset \| Other Assets
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	280,823	403,500
Derivative, Fair Value	7,077	13,902
Financial Institution Counterparties Loan Interest Rate Swap Liabilities \| Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	235,217	132,146
Derivative, Fair Value	$ 6,475	$ 3,131

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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

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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=109250915&loc=d3e13433-108611

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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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