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Loans and ALLL (Summary of changes in ALLL by segments) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Summary of changes in the ALLL and the recorded investment in loans by segments
Allowance for loan losses, Beginning Balance	$ 9,204	$ 9,271	$ 9,103	$ 9,744
Allowance for loan losses, Charge-offs	(106)	(53)	(197)	(212)
Allowance for loan losses, Recoveries	117	111	272	320
Allowance for loan losses, Provision for loan losses	485	31	522	(492)
Allowance for loan losses, Ending Balance	9,700	9,360	9,700	9,360
Commercial [Member]
Summary of changes in the ALLL and the recorded investment in loans by segments
Allowance for loan losses, Beginning Balance	1,245	1,699	1,740	2,162
Allowance for loan losses, Charge-offs	(3)	0	(3)	(31)
Allowance for loan losses, Recoveries	26	17	40	99
Allowance for loan losses, Provision for loan losses	490	595	(19)	81
Allowance for loan losses, Ending Balance	1,758	2,311	1,758	2,311
Agricultural [Member]
Summary of changes in the ALLL and the recorded investment in loans by segments
Allowance for loan losses, Beginning Balance	383	230	289	311
Allowance for loan losses, Charge-offs	0	0	0	0
Allowance for loan losses, Recoveries	1	3	3	5
Allowance for loan losses, Provision for loan losses	67	15	159	(68)
Allowance for loan losses, Ending Balance	451	248	451	248
Residential Real Estate [Member]
Summary of changes in the ALLL and the recorded investment in loans by segments
Allowance for loan losses, Beginning Balance	725	1,163	747	1,363
Allowance for loan losses, Charge-offs	0	0	0	0
Allowance for loan losses, Recoveries	42	48	70	103
Allowance for loan losses, Provision for loan losses	(128)	(257)	(178)	(512)
Allowance for loan losses, Ending Balance	639	954	639	954
Consumer Portfolio Segment [Member]
Summary of changes in the ALLL and the recorded investment in loans by segments
Allowance for loan losses, Beginning Balance	708	956	908	798
Allowance for loan losses, Charge-offs	(103)	(53)	(194)	(181)
Allowance for loan losses, Recoveries	48	43	159	113
Allowance for loan losses, Provision for loan losses	670	(8)	450	208
Allowance for loan losses, Ending Balance	1,323	938	1,323	938
Unallocated [Member]
Summary of changes in the ALLL and the recorded investment in loans by segments
Allowance for loan losses, Beginning Balance	6,143	5,223	5,419	5,110
Allowance for loan losses, Charge-offs	0	0	0	0
Allowance for loan losses, Recoveries	0	0	0	0
Allowance for loan losses, Provision for loan losses	(614)	(314)	110	(201)
Allowance for loan losses, Ending Balance	$ 5,529	$ 4,909	$ 5,529	$ 4,909

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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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