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Loans and Allowance for Credit Losses on Loans (Credit Risk Exposure Indicators by Portfolio Segment) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 4,098,094	$ 4,010,353
Residential real estate
Financing Receivable, Recorded Investment [Line Items]
Loans	1,763,378	1,700,266
Commercial
Financing Receivable, Recorded Investment [Line Items]
Loans	403,901	430,131
Home equity
Financing Receivable, Recorded Investment [Line Items]
Loans	240,341	234,428
Consumer
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 18,168	$ 20,591

X

- 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/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-5

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-Publisher FASB
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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 310
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-Name Accounting Standards Codification
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