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Loans (Amortized Cost basis of Loans Modified to Borrowers Experiencing Financial Difficulty) (Details) - Extended Maturity [Member] $ in Thousands	Sep. 30, 2023 USD ($)
Financing Receivable, Modified [Line Items]
Financing receivables, amortized cost basis	$ 335
Percentage of total loans	0.01%
Commercial Business [Member]
Financing Receivable, Modified [Line Items]
Financing receivables, amortized cost basis	$ 0
Percentage of total loans	0.00%
Commercial Mortgage [Member]
Financing Receivable, Modified [Line Items]
Financing receivables, amortized cost basis	$ 0
Percentage of total loans	0.00%
Residential Real Estate Loans [Member]
Financing Receivable, Modified [Line Items]
Financing receivables, amortized cost basis	$ 335
Percentage of total loans	0.05%
Residential Real Estate Lines [Member]
Financing Receivable, Modified [Line Items]
Financing receivables, amortized cost basis	$ 0
Percentage of total loans	0.00%
Consumer Indirect [Member]
Financing Receivable, Modified [Line Items]
Financing receivables, amortized cost basis	$ 0
Percentage of total loans	0.00%
Other Consumer [Member]
Financing Receivable, Modified [Line Items]
Financing receivables, amortized cost basis	$ 0
Percentage of total loans	0.00%

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- Definition

Financial receivables percentage of total loans

+ References

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- Definition

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/exampleRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org//1943274/2147481962/310-10-50-33

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-34

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- Definition

Amortized cost, after allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(5)(b))
-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
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