Loans Receivable and Allowance for Loan Losses (Loan Portfolio Summarized by the Past Due Status) (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Financing Receivable, Past Due [Line Items]
Past Due and still accruing		$ 91
Non-Accrual	$ 708	643
Total Past Due and Non-Accrual	1,724	1,208
Total Loans	1,372,492	1,356,040
Purchased Credit-Impaired [Member]
Financing Receivable, Past Due [Line Items]
Non-Accrual	6,814	8,304
Total Loans	1,372,492	1,356,040
Financial Asset, Not Past Due [Member]
Financing Receivable, Past Due [Line Items]
Past Due	1,363,954	1,346,528
Financing Receivables, 31 to 60 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Past Due	767	431
Financing Receivables, 61 to 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Past Due	249	134
Residential Real Estate Loans [Member]
Financing Receivable, Past Due [Line Items]
Non-Accrual	460	469
Total Past Due and Non-Accrual	842	634
Total Loans	276,592	273,040
Residential Real Estate Loans [Member] | Purchased Credit-Impaired [Member]
Financing Receivable, Past Due [Line Items]
Non-Accrual	669	784
Total Loans	276,592	273,040
Residential Real Estate Loans [Member] | Financial Asset, Not Past Due [Member]
Financing Receivable, Past Due [Line Items]
Past Due	275,081	271,622
Residential Real Estate Loans [Member] | Financing Receivables, 31 to 60 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Past Due	242	155
Residential Real Estate Loans [Member] | Financing Receivables, 61 to 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Past Due	140	10
Commercial Real Estate Loans [Member]
Financing Receivable, Past Due [Line Items]
Non-Accrual	101	103
Total Past Due and Non-Accrual	335	103
Total Loans	641,581	628,724
Commercial Real Estate Loans [Member] | Purchased Credit-Impaired [Member]
Financing Receivable, Past Due [Line Items]
Non-Accrual	2,744	3,285
Total Loans	641,581	628,724
Commercial Real Estate Loans [Member] | Financial Asset, Not Past Due [Member]
Financing Receivable, Past Due [Line Items]
Past Due	638,502	625,336
Commercial Real Estate Loans [Member] | Financing Receivables, 31 to 60 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Past Due	194
Commercial Real Estate Loans [Member] | Financing Receivables, 61 to 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Past Due	40
Agricultural Real Estate Loans [Member]
Financing Receivable, Past Due [Line Items]
Total Past Due and Non-Accrual		25
Total Loans	64,153	61,925
Agricultural Real Estate Loans [Member] | Purchased Credit-Impaired [Member]
Financing Receivable, Past Due [Line Items]
Non-Accrual	1,925	1,918
Total Loans	64,153	61,925
Agricultural Real Estate Loans [Member] | Financial Asset, Not Past Due [Member]
Financing Receivable, Past Due [Line Items]
Past Due	62,228	59,982
Agricultural Real Estate Loans [Member] | Financing Receivables, 31 to 60 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Past Due		25
Construction Real Estate Loans [Member]
Financing Receivable, Past Due [Line Items]
Total Loans	19,407	21,990
Construction Real Estate Loans [Member] | Purchased Credit-Impaired [Member]
Financing Receivable, Past Due [Line Items]
Total Loans	19,407	21,990
Construction Real Estate Loans [Member] | Financial Asset, Not Past Due [Member]
Financing Receivable, Past Due [Line Items]
Past Due	19,407	21,990
Commercial [Member]
Financing Receivable, Past Due [Line Items]
Past Due and still accruing		91
Non-Accrual	16	16
Total Past Due and Non-Accrual	90	32
Total Loans	183,212	186,031
Commercial [Member] | Purchased Credit-Impaired [Member]
Financing Receivable, Past Due [Line Items]
Non-Accrual		198
Total Loans	183,212	186,031
Commercial [Member] | Financial Asset, Not Past Due [Member]
Financing Receivable, Past Due [Line Items]
Past Due	183,122	185,801
Commercial [Member] | Financing Receivables, 31 to 60 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Past Due	74	3
Commercial [Member] | Financing Receivables, 61 to 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Past Due		13
Other Agricultural Loans [Member]
Financing Receivable, Past Due [Line Items]
Total Past Due and Non-Accrual	90
Total Loans	36,729	37,930
Other Agricultural Loans [Member] | Purchased Credit-Impaired [Member]
Financing Receivable, Past Due [Line Items]
Non-Accrual	1,476	2,119
Total Loans	36,729	37,930
Other Agricultural Loans [Member] | Financial Asset, Not Past Due [Member]
Financing Receivable, Past Due [Line Items]
Past Due	35,163	35,811
Other Agricultural Loans [Member] | Financing Receivables, 31 to 60 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Past Due	90
Consumer Loans To Individuals [Member]
Financing Receivable, Past Due [Line Items]
Non-Accrual	131	55
Total Past Due and Non-Accrual	367	414
Total Loans	150,818	146,400
Consumer Loans To Individuals [Member] | Purchased Credit-Impaired [Member]
Financing Receivable, Past Due [Line Items]
Total Loans	150,818	146,400
Consumer Loans To Individuals [Member] | Financial Asset, Not Past Due [Member]
Financing Receivable, Past Due [Line Items]
Past Due	150,451	145,986
Consumer Loans To Individuals [Member] | Financing Receivables, 31 to 60 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Past Due	167	248
Consumer Loans To Individuals [Member] | Financing Receivables, 61 to 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Past Due	$ 69	$ 111