Loans, Impaired Financing Receivable (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	$ 18,143		$ 17,905
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded Investment With No Allowance	14,538		14,878
Recorded Investment With Allowance	1,074		655
Total Recorded Investment	15,612		15,533
Related Allowance	510		121
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment	15,463	$ 17,028
Interest Income Recognized	99	98
Interest Income Recognized Cash Basis	0	7
Real Estate Loans [Member] \| Mortgages [Member]
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	713		697
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded Investment With No Allowance	482		495
Recorded Investment With Allowance	44		45
Total Recorded Investment	526		540
Related Allowance	6		6
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment	531	851
Interest Income Recognized	2	5
Interest Income Recognized Cash Basis	0	0
Real Estate Loans [Member] \| Home Equity [Member]
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	95		97
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded Investment With No Allowance	35		37
Recorded Investment With Allowance	41		43
Total Recorded Investment	76		80
Related Allowance	5		6
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment	77	124
Interest Income Recognized	1	1
Interest Income Recognized Cash Basis	0	0
Real Estate Loans [Member] \| Commercial [Member]
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	9,180		9,330
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded Investment With No Allowance	7,908		8,096
Recorded Investment With Allowance	281		285
Total Recorded Investment	8,189		8,381
Related Allowance	56		61
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment	8,260	9,238
Interest Income Recognized	66	67
Interest Income Recognized Cash Basis	0	7
Real Estate Loans [Member] \| Agricultural [Member]
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	5,673		5,694
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded Investment With No Allowance	5,100		5,167
Recorded Investment With Allowance	188		188
Total Recorded Investment	5,288		5,355
Related Allowance	14		14
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment	5,316	4,590
Interest Income Recognized	28	22
Interest Income Recognized Cash Basis	0	0
Real Estate Loans [Member] \| Construction [Member]
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	0		0
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded Investment With No Allowance	0		0
Recorded Investment With Allowance	0		0
Total Recorded Investment	0		0
Related Allowance	0		0
Consumer [Member]
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	0		0
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded Investment With No Allowance	0		0
Recorded Investment With Allowance	0		0
Total Recorded Investment	0		0
Related Allowance	0		0
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment	0	1
Interest Income Recognized	0	0
Interest Income Recognized Cash Basis	0	0
Other Commercial Loans [Member]
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	1,241		813
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded Investment With No Allowance	92		92
Recorded Investment With Allowance	520		94
Total Recorded Investment	612		186
Related Allowance	429		34
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment	326	1,121
Interest Income Recognized	1	1
Interest Income Recognized Cash Basis	0	0
Other Agricultural Loans [Member]
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	1,241		1,274
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded Investment With No Allowance	921		991
Recorded Investment With Allowance	0		0
Total Recorded Investment	921		991
Related Allowance	0		$ 0
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment	953	1,103
Interest Income Recognized	1	2
Interest Income Recognized Cash Basis	$ 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 http://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 http://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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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
-Subparagraph (b)
-URI http://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 unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.

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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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