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Loans and ACL (Summary of Loan Composition) (Details) - USD ($)	Mar. 31, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 1,270,651,000	$ 1,264,173,000
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	169,395,000	161,895,000
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.1333	0.1280
Commercial and Industrial, Unsecured, Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	19,790,000	16,533,000
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.0156	0.0131
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	189,185,000	178,428,000
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.1489	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	180,888,000	192,117,000
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.1424	0.1520
Commercial Real Estate, Non-owner Occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	219,365,000	204,091,000
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.1726	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	85,217,000	85,278,000
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.0671	0.0675
Commercial Real Estate, Multifamily, Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	80,940,000	84,526,000
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.0637	0.0669
Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	566,410,000	566,012,000
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.4458	0.4478
Agricultural Mortgage, Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	71,336,000	73,002,000
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.0561	0.0577
Agricultural Other Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	23,424,000	31,983,000
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.0184	0.0253
Agricultural [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	94,760,000	104,985,000
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.0745	0.0830
Residential, Senior Liens, Financing Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	299,784,000	300,225,000
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.2359	0.2375
Residential, Junior Liens, Financing Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	3,386,000	3,282,000
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.0027	0.0026
Residential, Home Equity Line Of Credit, Financing Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	33,016,000	33,187,000
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.0260	0.0263
Residential Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	336,186,000	336,694,000
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.2646	0.2664
Consumer, Secured, Direct, Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	37,141,000	37,127,000
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.0292	0.0294
Consumer, Secured, Indirect, Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	43,802,000	37,814,000
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.0345	0.0298
Consumer, Unsecured, Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	3,167,000	3,113,000
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	0.0025	0.0025
Consumer Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	84,110,000	78,054,000
LoanPortfolioClassesAndSegmentsAsPercentageofAggregateLoan	$ 0.0662	$ 0.0617

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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
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