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Loans Receivable and Allowance for Loan Losses (Loan Portfolio Summarized by the Past Due Status) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Financing Receivable, Past Due [Line Items]
Loans	$ 1,536,037	$ 1,474,424
Non-Accrual	2,714	1,113
Total Past Due and Non-Accrual	5,312	3,221
Purchased Credit-Impaired [Member]
Financing Receivable, Past Due [Line Items]
Loans		6,290
Financial Asset, Not Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans	1,530,725	1,464,913
Financing Receivables, 31 to 60 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans	2,448	1,646
Financing Receivables, 61 to 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans	150	462
Residential Real Estate Loans [Member]
Financing Receivable, Past Due [Line Items]
Loans	301,711	298,813
Non-Accrual	437	486
Total Past Due and Non-Accrual	1,443	896
Residential Real Estate Loans [Member] | Purchased Credit-Impaired [Member]
Financing Receivable, Past Due [Line Items]
Loans		567
Residential Real Estate Loans [Member] | Financial Asset, Not Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans	300,268	297,350
Residential Real Estate Loans [Member] | Financing Receivables, 31 to 60 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans	978	187
Residential Real Estate Loans [Member] | Financing Receivables, 61 to 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans	28	223
Commercial Real Estate Loans [Member]
Financing Receivable, Past Due [Line Items]
Loans	668,386	651,544
Non-Accrual	1,941	402
Total Past Due and Non-Accrual	2,394	807
Commercial Real Estate Loans [Member] | Purchased Credit-Impaired [Member]
Financing Receivable, Past Due [Line Items]
Loans		2,049
Commercial Real Estate Loans [Member] | Financial Asset, Not Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans	665,992	648,688
Commercial Real Estate Loans [Member] | Financing Receivables, 31 to 60 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans	453	405
Agricultural Real Estate Loans [Member]
Financing Receivable, Past Due [Line Items]
Loans	68,381	68,915
Total Past Due and Non-Accrual		130
Agricultural Real Estate Loans [Member] | Purchased Credit-Impaired [Member]
Financing Receivable, Past Due [Line Items]
Loans		2,034
Agricultural Real Estate Loans [Member] | Financial Asset, Not Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans	68,381	66,751
Agricultural Real Estate Loans [Member] | Financing Receivables, 31 to 60 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans		130
Construction Real Estate Loans [Member]
Financing Receivable, Past Due [Line Items]
Loans	32,391	32,469
Total Past Due and Non-Accrual	23
Construction Real Estate Loans [Member] | Financial Asset, Not Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans	32,368	32,469
Construction Real Estate Loans [Member] | Financing Receivables, 31 to 60 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans	23
Commercial Loans [Member]
Financing Receivable, Past Due [Line Items]
Loans	207,888	187,257
Non-Accrual	115	61
Total Past Due and Non-Accrual	422	132
Commercial Loans [Member] | Purchased Credit-Impaired [Member]
Financing Receivable, Past Due [Line Items]
Loans		1,640
Commercial Loans [Member] | Financial Asset, Not Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans	207,466	185,485
Commercial Loans [Member] | Financing Receivables, 31 to 60 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans	221	71
Commercial Loans [Member] | Financing Receivables, 61 to 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans	86
Other Agricultural Loans [Member]
Financing Receivable, Past Due [Line Items]
Loans	34,033	35,277
Other Agricultural Loans [Member] | Financial Asset, Not Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans	34,033	35,277
Consumer Loans [Member]
Financing Receivable, Past Due [Line Items]
Loans	223,247	200,149
Non-Accrual	221	164
Total Past Due and Non-Accrual	1,030	1,256
Consumer Loans [Member] | Financial Asset, Not Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans	222,217	198,893
Consumer Loans [Member] | Financing Receivables, 31 to 60 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans	773	853
Consumer Loans [Member] | Financing Receivables, 61 to 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans	$ 36	$ 239

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