Loans and ACL (Summary of Loan Composition) (Details) $ in Thousands	Sep. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 1,334,674	$ 1,264,173
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	1.0000	1.0000
Commercial and Industrial, Secured, Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 176,887	$ 161,895
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.1324	0.1280
Commercial and Industrial, Unsecured, Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 18,927	$ 16,533
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.0142	0.0131
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 195,814	$ 178,428
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.1466	0.1411
Commercial Real Estate, Owner Occupied, Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 183,497	$ 192,117
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.1375	0.1520
Commercial Real Estate, Non-owner Occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 216,675	$ 204,091
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.1623	0.1614
Commercial Real Estate, 1-4 Family Investor, Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 88,150	$ 85,278
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.0660	0.0675
Commercial Real Estate, Multifamily, Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 78,317	$ 84,526
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.0587	0.0669
Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 566,639	$ 566,012
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.4245	0.4478
Commercial Advances to Mortgage Brokers Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 24,807	$ 0
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.0186	0
Agricultural Mortgage, Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 69,930	$ 73,002
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.0524	0.0577
Agricultural Other Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 29,303	$ 31,983
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.0220	0.0253
Agricultural [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 99,233	$ 104,985
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.0744	0.0830
Residential Real Estate, Senior Lien, Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 306,054	$ 300,225
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.2293	0.2375
Residential Real Estate, Junior Lien, Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 5,501	$ 3,282
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.0041	0.0026
Residential Real Estate, Home Equity Lines of Credit, Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 36,641	$ 33,187
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.0275	0.0263
Residential Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 348,196	$ 336,694
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.2609	0.2664
Consumer, Secured, Direct, Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 38,029	$ 37,127
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.0285	0.0294
Consumer, Secured, Indirect, Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 58,660	$ 37,814
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.0440	0.0298
Consumer, Unsecured, Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 3,296	$ 3,113
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.0025	0.0025
Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 99,985	$ 78,054
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.0750	0.0617