Loans and ALLL (Summary of changes in ALLL by segments) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Summary of changes in the ALLL and the recorded investment in loans by segments
Allowance for loan losses, Beginning Balance	$ 9,850	$ 9,103
Allowance for loan losses, Charge-offs	(101)	(91)
Allowance for loan losses, Recoveries	110	155
Allowance for loan losses, Provision for loan losses	41	37
Allowance for loan losses, Ending Balance	12,640	9,204
Accounting Standards Update 2016-13
Summary of changes in the ALLL and the recorded investment in loans by segments
Allowance for loan losses, Ending Balance	2,744
Commercial [Member]
Summary of changes in the ALLL and the recorded investment in loans by segments
Allowance for loan losses, Beginning Balance	860	1,740
Allowance for loan losses, Charge-offs	0	0
Allowance for loan losses, Recoveries	0	14
Allowance for loan losses, Provision for loan losses	15	(509)
Allowance for loan losses, Ending Balance	817	1,245
Commercial [Member] \| Accounting Standards Update 2016-13
Summary of changes in the ALLL and the recorded investment in loans by segments
Allowance for loan losses, Ending Balance	(58)
Agricultural [Member]
Summary of changes in the ALLL and the recorded investment in loans by segments
Allowance for loan losses, Beginning Balance	577	289
Allowance for loan losses, Charge-offs	0	0
Allowance for loan losses, Recoveries	4	2
Allowance for loan losses, Provision for loan losses	(69)	92
Allowance for loan losses, Ending Balance	265	383
Agricultural [Member] \| Accounting Standards Update 2016-13
Summary of changes in the ALLL and the recorded investment in loans by segments
Allowance for loan losses, Ending Balance	(247)
Residential Real Estate [Member]
Summary of changes in the ALLL and the recorded investment in loans by segments
Allowance for loan losses, Beginning Balance	617	747
Allowance for loan losses, Charge-offs		0
Allowance for loan losses, Recoveries		28
Allowance for loan losses, Provision for loan losses		(50)
Allowance for loan losses, Ending Balance		725
Consumer Portfolio Segment [Member]
Summary of changes in the ALLL and the recorded investment in loans by segments
Allowance for loan losses, Beginning Balance	961	908
Allowance for loan losses, Charge-offs	(99)	(91)
Allowance for loan losses, Recoveries	72	111
Allowance for loan losses, Provision for loan losses	119	(220)
Allowance for loan losses, Ending Balance	1,409	708
Consumer Portfolio Segment [Member] \| Accounting Standards Update 2016-13
Summary of changes in the ALLL and the recorded investment in loans by segments
Allowance for loan losses, Ending Balance	356
Unallocated [Member]
Summary of changes in the ALLL and the recorded investment in loans by segments
Allowance for loan losses, Beginning Balance	6,374	5,419
Allowance for loan losses, Charge-offs	0	0
Allowance for loan losses, Recoveries	0	0
Allowance for loan losses, Provision for loan losses	0	724
Allowance for loan losses, Ending Balance	0	$ 6,143
Unallocated [Member] \| Accounting Standards Update 2016-13
Summary of changes in the ALLL and the recorded investment in loans by segments
Allowance for loan losses, Ending Balance	(6,374)
Commercial Real Estate
Summary of changes in the ALLL and the recorded investment in loans by segments
Allowance for loan losses, Beginning Balance	461
Allowance for loan losses, Charge-offs	0
Allowance for loan losses, Recoveries	10
Allowance for loan losses, Provision for loan losses	33
Allowance for loan losses, Ending Balance	6,036
Commercial Real Estate \| Accounting Standards Update 2016-13
Summary of changes in the ALLL and the recorded investment in loans by segments
Allowance for loan losses, Ending Balance	5,532
Loans Receivable
Summary of changes in the ALLL and the recorded investment in loans by segments
Allowance for loan losses, Provision for loan losses	37
Residential Real Estate
Summary of changes in the ALLL and the recorded investment in loans by segments
Allowance for loan losses, Beginning Balance	617
Allowance for loan losses, Charge-offs	(2)
Allowance for loan losses, Recoveries	24
Allowance for loan losses, Provision for loan losses	(61)
Allowance for loan losses, Ending Balance	4,113
Residential Real Estate \| Accounting Standards Update 2016-13
Summary of changes in the ALLL and the recorded investment in loans by segments
Allowance for loan losses, Ending Balance	$ 3,535

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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 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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