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Loans and ACL (Summary of Loan Modifications by Type) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2023 USD ($)
Extended Maturity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable Modifications Amortized Cost	$ 1,305
Extended Maturity and Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable Modifications Amortized Cost	28
Commercial Real Estate, Non-owner Occupied | Extended Maturity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable Modifications Amortized Cost	$ 1,034
Financing Receivable Modification Percentage of Portfolio Segment	0.0048
Commercial Real Estate, Non-owner Occupied | Extended Maturity and Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable Modifications Amortized Cost	$ 0
Financing Receivable Modification Percentage of Portfolio Segment	0
Agricultural Mortgage, Portfolio Segment | Extended Maturity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable Modifications Amortized Cost	$ 232
Financing Receivable Modification Percentage of Portfolio Segment	0.0033
Agricultural Mortgage, Portfolio Segment | Extended Maturity and Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable Modifications Amortized Cost	$ 28
Financing Receivable Modification Percentage of Portfolio Segment	0.0004
Agricultural Other Portfolio Segment [Member] | Extended Maturity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable Modifications Amortized Cost	$ 34
Financing Receivable Modification Percentage of Portfolio Segment	0.0012
Agricultural Other Portfolio Segment [Member] | Extended Maturity and Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable Modifications Amortized Cost	$ 0
Financing Receivable Modification Percentage of Portfolio Segment	0
Residential Real Estate, Senior Lien, Portfolio Segment | Extended Maturity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable Modifications Amortized Cost	$ 5
Financing Receivable Modification Percentage of Portfolio Segment	0
Residential Real Estate, Senior Lien, Portfolio Segment | Extended Maturity and Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable Modifications Amortized Cost	$ 0
Financing Receivable Modification Percentage of Portfolio Segment	0

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Subparagraph (a)(1)
-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Subparagraph (a)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-42

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 12A
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481933/310-10-55-12A

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 33
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-33

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
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-Section 50
-Paragraph 34
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-34

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