Loans Receivable and Allowance for Loan Losses (Composition of the Loan Portfolio) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 1,474,424	$ 1,356,040
Deferred fees, net	(479)	(1,109)
Total loans receivable	1,473,945	1,354,931
Allowance for loan losses	(16,999)	(16,442)	$ (13,150)
Loans receivable (net of allowance for loan losses 2022: $16,999; 2021: $16,442)	$ 1,456,946	$ 1,338,489
Percent of Loans	100.00%	100.00%
Residential Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 298,813	$ 273,040
Allowance for loan losses	$ (2,833)	$ (2,175)	(1,960)
Percent of Loans	20.30%	20.10%
Commercial Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 651,544	$ 628,724
Allowance for loan losses	$ (8,293)	$ (10,878)	(8,004)
Percent of Loans	44.20%	46.40%
Agricultural Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 68,915	$ 61,925
Percent of Loans	4.70%	4.60%
Construction Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 32,469	$ 21,990
Allowance for loan losses	$ (409)	$ (133)	(150)
Percent of Loans	2.20%	1.60%
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 187,257	$ 186,031
Allowance for loan losses	$ (2,445)	$ (1,490)	(1,360)
Percent of Loans	12.70%	13.70%
Other Agricultural Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 35,277	$ 37,930
Percent of Loans	2.40%	2.80%
Consumer Loans To Individuals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 200,149	$ 146,400
Allowance for loan losses	$ (2,636)	$ (1,766)	$ (1,676)
Percent of Loans	13.50%	10.80%

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Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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Amount of deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Excludes amounts for loans and leases covered under loss sharing agreements.

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

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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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Amount after allowance and 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 and loans held for sale.

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