Allowance For Credit Losses (Financial Impact Of Modifications To Troubled Borrowers) (Details)	3 Months Ended	6 Months Ended
Jun. 30, 2023	Jun. 30, 2023
Commercial And Industrial [Member] \| Extended Maturity
Financing Receivable, Modifications [Line Items]
Financial Effect, Term Extension	1 year	1 year
Commercial And Industrial [Member] \| Payment Deferral
Financing Receivable, Modifications [Line Items]
Financial Effect, Payments deferral	0.5	0.5
Commercial Real Estate Mortgage - Owner-Occupied [Member] \| Extended Maturity
Financing Receivable, Modifications [Line Items]
Financial Effect, Term Extension	9 months	8 months 1 day
Commercial Real Estate Construction - Owner-Occupied [Member] \| Extended Maturity
Financing Receivable, Modifications [Line Items]
Financial Effect, Term Extension	3 months	3 months
Commercial investor real estate mortgage [Member] \| Extended Maturity
Financing Receivable, Modifications [Line Items]
Financial Effect, Term Extension	8 months 1 day	8 months 1 day
Residential First Mortgage [Member] \| Extended Maturity
Financing Receivable, Modifications [Line Items]
Financial Effect, Term Extension	5 years	5 years
Residential First Mortgage [Member] \| Extended Maturity and Interest Rate Reduction
Financing Receivable, Modifications [Line Items]
Financial Effect, Term Extension		8 years
Financing Receivable, Modified, Weighted Average Interest Rate Decrease from Modification		1.00%
Home Equity Lines of Credit[Member] \| Extended Maturity
Financing Receivable, Modifications [Line Items]
Financial Effect, Term Extension		19 years
Home Equity Lines of Credit[Member] \| Extended Maturity and Interest Rate Reduction
Financing Receivable, Modifications [Line Items]
Financial Effect, Term Extension	20 years	18 years
Financing Receivable, Modified, Weighted Average Interest Rate Decrease from Modification	1.00%	1.00%
Home Equity Loan [Member] \| Extended Maturity
Financing Receivable, Modifications [Line Items]
Financial Effect, Term Extension	18 years	15 years
Home Equity Loan [Member] \| Extended Maturity and Interest Rate Reduction
Financing Receivable, Modifications [Line Items]
Financial Effect, Term Extension	14 years	16 years
Financing Receivable, Modified, Weighted Average Interest Rate Decrease from Modification	3.00%	2.00%

Financial Effect, Weighted average payment extension

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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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-42

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Subparagraph (a)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-42

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 12A
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481933/310-10-55-12A

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 33
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-33

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 34
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-34

+ Details

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- Definition

Percentage of decrease in weighted average contractual interest rate of financing receivable modified for debtor experiencing financial difficulty.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 12A
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481933/310-10-55-12A

+ Details

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- Definition

Period of increase in weighted average maturity of financing receivable modified for debtor experiencing financial difficulty, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

+ Details

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