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Loans and ALLL (Summary of recorded investment in loans by segments) (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment, ALLL	$ 1,201		$ 911
Collectively evaluated for impairment, ALLL	8,159		8,833
Total, ALLL	9,360	$ 9,271	9,744	$ 8,877	$ 8,697	$ 7,939
Individually evaluated for impairment, Loans	30,535		27,936
Collectively evaluated for impairment, Loans	1,176,128		1,210,375
Total	1,206,663		1,238,311
Commercial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment, ALLL	541		84
Collectively evaluated for impairment, ALLL	1,770		2,078
Total, ALLL	2,311	1,699	2,162	2,121	2,375	1,914
Individually evaluated for impairment, Loans	12,004		9,821
Collectively evaluated for impairment, Loans	711,884		746,865
Total	723,888		756,686
Agricultural [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment, ALLL	3		56
Collectively evaluated for impairment, ALLL	245		255
Total, ALLL	248	230	311	356	490	634
Individually evaluated for impairment, Loans	14,843		13,796
Collectively evaluated for impairment, Loans	80,354		86,665
Total	95,197		100,461
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment, ALLL	657		771
Collectively evaluated for impairment, ALLL	297		592
Total, ALLL	954	1,163	1,363	1,193	1,717	2,047
Individually evaluated for impairment, Loans	3,688		4,319
Collectively evaluated for impairment, Loans	308,879		303,224
Total	312,567		307,543
Total Consumer [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment, ALLL	0		0
Collectively evaluated for impairment, ALLL	938		798
Total, ALLL	938	956	798	825	961	922
Individually evaluated for impairment, Loans	0		0
Collectively evaluated for impairment, Loans	75,011		73,621
Total	75,011		73,621
Unallocated [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment, ALLL	0		0
Collectively evaluated for impairment, ALLL	4,909		5,110
Total, ALLL	$ 4,909	$ 5,223	$ 5,110	$ 4,382	$ 3,154	$ 2,422

X

- Definition

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

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