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Loans and ALLL (Summary of recorded investment in loans by segments) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment, ALLL	$ 451	$ 578
Collectively evaluated for impairment, ALLL	9,399	8,525
Total, ALLL	9,850	9,103	$ 9,744
Individually evaluated for impairment, Loans	22,018	26,910
Collectively evaluated for impairment, Loans	1,242,155	1,274,127
Total	1,264,173	1,301,037
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment, ALLL	12	13
Collectively evaluated for impairment, ALLL	1,309	1,727
Total, ALLL	1,321	1,740	2,162
Individually evaluated for impairment, Loans	8,342	9,267
Collectively evaluated for impairment, Loans	732,578	798,172
Total	740,920	807,439
Agricultural [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment, ALLL	0	0
Collectively evaluated for impairment, ALLL	577	289
Total, ALLL	577	289	311
Individually evaluated for impairment, Loans	10,935	14,189
Collectively evaluated for impairment, Loans	93,379	79,766
Total	104,314	93,955
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment, ALLL	439	565
Collectively evaluated for impairment, ALLL	178	182
Total, ALLL	617	747	1,363
Individually evaluated for impairment, Loans	2,741	3,454
Collectively evaluated for impairment, Loans	338,144	322,907
Total	340,885	326,361
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment, ALLL	0	0
Collectively evaluated for impairment, ALLL	961	908
Total, ALLL	961	908	798
Individually evaluated for impairment, Loans	0	0
Collectively evaluated for impairment, Loans	78,054	73,282
Total	78,054	73,282
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment, ALLL	0	0
Collectively evaluated for impairment, ALLL	6,374	5,419
Total, ALLL	$ 6,374	$ 5,419	$ 5,110

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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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