Loans, Impaired Financing Receivable (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	$ 14,951		$ 14,951		$ 17,905
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded Investment With No Allowance	11,509		11,509		14,878
Recorded Investment With Allowance	685		685		655
Total Recorded Investment	12,194		12,194		15,533
Related Allowance	107		107		121
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment	12,323	$ 15,347	13,358	$ 16,194
Interest Income Recognized	83	104	247	296
Interest Income Recognized Cash Basis	3	8	6	23
Real Estate Loans [Member] \| Mortgages [Member]
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	430		430		697
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded Investment With No Allowance	248		248		495
Recorded Investment With Allowance	41		41		45
Total Recorded Investment	289		289		540
Related Allowance	5		5		6
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment	321	613	466	727
Interest Income Recognized	4	4	9	12
Interest Income Recognized Cash Basis	0	0	0	0
Real Estate Loans [Member] \| Home Equity [Member]
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	73		73		97
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded Investment With No Allowance	40		40		37
Recorded Investment With Allowance	15		15		43
Total Recorded Investment	55		55		80
Related Allowance	1		1		6
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment	50	84	68	106
Interest Income Recognized	1	1	2	4
Interest Income Recognized Cash Basis	0	0	0	0
Real Estate Loans [Member] \| Commercial [Member]
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	6,850		6,850		9,330
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded Investment With No Allowance	5,372		5,372		8,096
Recorded Investment With Allowance	364		364		285
Total Recorded Investment	5,736		5,736		8,381
Related Allowance	60		60		61
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment	5,778	8,688	6,372	8,902
Interest Income Recognized	43	77	141	211
Interest Income Recognized Cash Basis	3	8	6	23
Real Estate Loans [Member] \| Agricultural [Member]
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	5,637		5,637		5,694
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded Investment With No Allowance	4,986		4,986		5,167
Recorded Investment With Allowance	188		188		188
Total Recorded Investment	5,174		5,174		5,355
Related Allowance	24		24		14
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment	5,194	4,454	5,253	4,513
Interest Income Recognized	33	21	90	64
Interest Income Recognized Cash Basis	0	0	0	0
Consumer [Member]
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	4		4
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded Investment With No Allowance	0		0
Recorded Investment With Allowance	4		4
Total Recorded Investment	4		4
Related Allowance	4		4
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment	1	0	0	1
Interest Income Recognized	0	0	0	0
Interest Income Recognized Cash Basis	0	0	0	0
Other Commercial Loans [Member]
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	798		798		813
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded Investment With No Allowance	62		62		92
Recorded Investment With Allowance	73		73		94
Total Recorded Investment	135		135		186
Related Allowance	13		13		34
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment	157	486	313	876
Interest Income Recognized	1	0	2	2
Interest Income Recognized Cash Basis	0	0	0	0
Other Agricultural Loans [Member]
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	1,159		1,159		1,274
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded Investment With No Allowance	801		801		991
Recorded Investment With Allowance	0		0		0
Total Recorded Investment	801		801		991
Related Allowance	0		0		$ 0
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment	822	1,022	886	1,069
Interest Income Recognized	1	1	3	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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-SubTopic 10
-Section 50
-Paragraph 14A
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-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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