Loans, Impaired Financing Receivable (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	$ 15,405		$ 15,405		$ 17,905
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded Investment With No Allowance	12,061		12,061		14,878
Recorded Investment With Allowance	715		715		655
Total Recorded Investment	12,776		12,776		15,533
Related Allowance	129		129		121
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment	12,256	$ 16,210	13,875	$ 16,619
Interest Income Recognized	65	94	164	192
Interest Income Recognized Cash Basis	3	8	3	15
Real Estate Loans [Member] \| Mortgages [Member]
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	767		767		697
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded Investment With No Allowance	560		560		495
Recorded Investment With Allowance	42		42		45
Total Recorded Investment	602		602		540
Related Allowance	6		6		6
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment	547	718	539	784
Interest Income Recognized	3	3	5	8
Interest Income Recognized Cash Basis	0	0	0	0
Real Estate Loans [Member] \| Home Equity [Member]
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	92		92		97
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded Investment With No Allowance	33		33		37
Recorded Investment With Allowance	41		41		43
Total Recorded Investment	74		74		80
Related Allowance	5		5		6
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment	75	109	76	117
Interest Income Recognized	0	2	1	3
Interest Income Recognized Cash Basis	0	0	0	0
Real Estate Loans [Member] \| Commercial [Member]
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	6,895		6,895		9,330
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded Investment With No Allowance	5,475		5,475		8,096
Recorded Investment With Allowance	367		367		285
Total Recorded Investment	5,842		5,842		8,381
Related Allowance	77		77		61
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment	5,048	8,781	6,669	9,009
Interest Income Recognized	32	67	98	134
Interest Income Recognized Cash Basis	3	8	3	15
Real Estate Loans [Member] \| Agricultural [Member]
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	5,648		5,648		5,694
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded Investment With No Allowance	5,037		5,037		5,167
Recorded Investment With Allowance	188		188		188
Total Recorded Investment	5,225		5,225		5,355
Related Allowance	26		26		14
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment	5,248	4,497	5,282	4,543
Interest Income Recognized	29	21	57	43
Interest Income Recognized Cash Basis	0	0	0	0
Other Commercial Loans [Member]
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	800		800		813
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded Investment With No Allowance	92		92		92
Recorded Investment With Allowance	77		77		94
Total Recorded Investment	169		169		186
Related Allowance	15		15		34
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment	455	1,023	391	1,072
Interest Income Recognized	0	0	1	1
Interest Income Recognized Cash Basis	0	0	0	0
Other Agricultural Loans [Member]
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	1,203		1,203		1,274
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded Investment With No Allowance	864		864		991
Recorded Investment With Allowance	0		0		0
Total Recorded Investment	864		864		991
Related Allowance	0		0		$ 0
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment	883	1,082	918	1,093
Interest Income Recognized	1	1	2	3
Interest Income Recognized Cash Basis	$ 0	$ 0	$ 0	$ 0

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
-URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5258-111524

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Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

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-Publisher FASB
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-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953550-111524

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Amount of allowance for credit losses related to recorded investment.

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Amount of investment in impaired financing receivables for which there is no related allowance for credit losses.

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