Loans and ALLL (Summary of changes in ALLL by segments) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
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	(91)	(159)
Allowance for loan losses, Recoveries	155	209
Allowance for loan losses, Provision for loan losses	37	(523)
Allowance for loan losses, Ending Balance	9,204	9,271
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	0	(31)
Allowance for loan losses, Recoveries	14	82
Allowance for loan losses, Provision for loan losses	(509)	(514)
Allowance for loan losses, Ending Balance	1,245	1,699
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	0
Allowance for loan losses, Recoveries	2	2
Allowance for loan losses, Provision for loan losses	92	(83)
Allowance for loan losses, Ending Balance	383	230
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	0
Allowance for loan losses, Recoveries	28	55
Allowance for loan losses, Provision for loan losses	(50)	(255)
Allowance for loan losses, Ending Balance	725	1,163
Consumer Portfolio Segment [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	(91)	(128)
Allowance for loan losses, Recoveries	111	70
Allowance for loan losses, Provision for loan losses	(220)	216
Allowance for loan losses, Ending Balance	708	956
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	724	113
Allowance for loan losses, Ending Balance	$ 6,143	$ 5,223

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

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Amount of writeoff of financing receivable, charged against allowance for credit loss.

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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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