Loans Loans (Analysis of Troubled Debt Restructurings) (Details) $ in Thousands	12 Months Ended
Dec. 31, 2022 USD ($) Modifications	Dec. 31, 2021 USD ($) Modifications	Dec. 31, 2020 USD ($) Modifications
Financing Receivable, Troubled Debt Restructuring [Line Items]
TDR Modifications, Number of Contracts \| Modifications	4	16	19
Pre-Modification Outstanding Recorded Investment	$ 1,320	$ 3,966	$ 7,566
Post-Modification Outstanding Recorded Investment	$ 1,320	$ 3,966	$ 7,566
Commercial Real Estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
TDR Modifications, Number of Contracts \| Modifications	0	1	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 628	$ 0
Post-Modification Outstanding Recorded Investment	$ 0	$ 628	$ 0
Commercial Business
Financing Receivable, Troubled Debt Restructuring [Line Items]
TDR Modifications, Number of Contracts \| Modifications	2	11	11
Pre-Modification Outstanding Recorded Investment	$ 637	$ 2,600	$ 3,257
Post-Modification Outstanding Recorded Investment	$ 637	$ 2,600	$ 3,257
Agriculture
Financing Receivable, Troubled Debt Restructuring [Line Items]
TDR Modifications, Number of Contracts \| Modifications	1	1	2
Pre-Modification Outstanding Recorded Investment	$ 633	$ 583	$ 3,495
Post-Modification Outstanding Recorded Investment	$ 633	$ 583	$ 3,495
Real estate: One-to-four family residential
Financing Receivable, Troubled Debt Restructuring [Line Items]
TDR Modifications, Number of Contracts \| Modifications	1	3	6
Pre-Modification Outstanding Recorded Investment	$ 50	$ 155	$ 814
Post-Modification Outstanding Recorded Investment	$ 50	$ 155	$ 814
Consumer Loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
TDR Modifications, Number of Contracts \| Modifications	0	0	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0
Post-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0

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Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524

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Amount, after troubled debt restructuring, of modified financing receivable.

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Amount, before troubled debt restructuring, of financing receivable to be modified.

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