Loans and ALLL (Summary of changes in ALLL by segments) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Allowance	$ 9,850	$ 9,103
Summary of changes in the ALLL and the recorded investment in loans by segments
Allowance for loan losses, Beginning Balance	9,103	9,744
Allowance for loan losses, Charge-offs	(619)	(607)
Allowance for loan losses, Recoveries	883	484
Allowance for loan losses, Provision for loan losses	483	(518)	$ 1,665
Allowance for loan losses, Ending Balance	9,850	9,103	9,744
Commercial [Member]
Summary of changes in the ALLL and the recorded investment in loans by segments
Allowance for loan losses, Beginning Balance	1,740	2,162
Allowance for loan losses, Charge-offs	(77)	(32)
Allowance for loan losses, Recoveries	442	133
Allowance for loan losses, Provision for loan losses	(784)	(523)
Allowance for loan losses, Ending Balance	1,321	1,740	2,162
Agricultural [Member]
Summary of changes in the ALLL and the recorded investment in loans by segments
Allowance for loan losses, Beginning Balance	289	311
Allowance for loan losses, Charge-offs	0	(77)
Allowance for loan losses, Recoveries	9	12
Allowance for loan losses, Provision for loan losses	279	43
Allowance for loan losses, Ending Balance	577	289	311
Residential Real Estate [Member]
Summary of changes in the ALLL and the recorded investment in loans by segments
Allowance for loan losses, Beginning Balance	747	1,363
Allowance for loan losses, Charge-offs	0	(12)
Allowance for loan losses, Recoveries	150	162
Allowance for loan losses, Provision for loan losses	(280)	(766)
Allowance for loan losses, Ending Balance	617	747	1,363
Consumer [Member]
Summary of changes in the ALLL and the recorded investment in loans by segments
Allowance for loan losses, Beginning Balance	908	798
Allowance for loan losses, Charge-offs	(542)	(486)
Allowance for loan losses, Recoveries	282	177
Allowance for loan losses, Provision for loan losses	313	419
Allowance for loan losses, Ending Balance	961	908	798
Unallocated [Member]
Summary of changes in the ALLL and the recorded investment in loans by segments
Allowance for loan losses, Beginning Balance	5,419	5,110
Allowance for loan losses, Charge-offs	0	0
Allowance for loan losses, Recoveries	0	0
Allowance for loan losses, Provision for loan losses	955	309
Allowance for loan losses, Ending Balance	$ 6,374	$ 5,419	$ 5,110

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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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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Amount of increase in allowance for credit loss on financing receivable from recovery.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

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