Loans and Allowance for Credit Losses (Narrative) (Details) - USD ($)	3 Months Ended	12 Months Ended
Mar. 31, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Aggregate balances of loans serviced to participants	$ 32,513,000	$ 8,466,000
Amount of consumer mortgages and loans secured by residential real estate properties in process of foreclosure	612,000	625,000
Aggregate balances of loans serviced to third party	295,977,000	301,235,000
Balance of capitalized servicing rights	2,292,000	2,409,000
Mortgage Servicing Rights (MSR) Impairment (Recovery)	0	0
Financial instruments represent off-balance sheet credit risk, asset	146,942,000	126,216,000
Accounting standards update 2022-02
Accounts, Notes, Loans and Financing Receivable [Line Items]
TDR reportable balance	0
Loans sold with recourse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financial instruments represent off-balance sheet credit risk, asset	726,000	276,000
Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid principal balances of loans held for sale	$ 688,000	$ 247,000

Amount of financing receivable modified as troubled debt restructuring.

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Represents amount of outstanding balance of loan serviced for third party.

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No definition available.

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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.

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No definition available.

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Principal amount of transferred financial assets in which the transferor has continuing involvement with the assets underlying the transaction. Continuing involvement includes, but is not limited to, servicing, recourse, and restrictions on transferor's interests in transferred financial assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
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The fair value of financial assets, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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-Section 50
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Amount, before valuation allowance, of financing receivable classified as held-for-sale.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process.

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The adjustment to the carrying value of the rights retained or purchased to service mortgages. These adjustments are made when the estimate of the fair value is changed. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
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Aggregate amount of servicing assets that are subsequently measured at fair value and servicing assets that are subsequently measured using the amortization method.

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