Basis of Presentation, Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses	$ 21,598	$ 21,153	$ 15,250	$ 18,552
Allowance for Credit Losses - Off-Balance Sheet credit Exposure	938	1,265	1,229	165
Real Estate Loans [Member] | Residential [Member]
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses	2,347	2,354	1,195	1,056
Real Estate Loans [Member] | Commercial [Member]
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses	9,741	9,178	6,747	10,120
Real Estate Loans [Member] | Agricultural [Member]
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses	3,672	3,264	3,409	4,589
Real Estate Loans [Member] | Construction [Member]
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses	1,595	1,950	851	801
Consumer [Member]
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses	1,266	1,496	1,220	135
Other Commercial Loans [Member]
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses	2,680	2,229	712	1,040
Other Agricultural Loans [Member]
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses	174	270	250	489
State and Political Subdivision Loans [Member]
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses	65	45	42	322
Unallocated [Member]
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses	$ 58	$ 367	$ 824	0
Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member]
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses				(3,300)
Allowance for Credit Losses - Off-Balance Sheet credit Exposure				1,064
Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member] | Real Estate Loans [Member] | Residential [Member]
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses				79
Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member] | Real Estate Loans [Member] | Commercial [Member]
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses				(3,070)
Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member] | Real Estate Loans [Member] | Agricultural [Member]
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses				(1,145)
Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member] | Real Estate Loans [Member] | Construction [Member]
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses				(103)
Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member] | Consumer [Member]
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses				1,040
Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member] | Other Commercial Loans [Member]
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses				(328)
Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member] | Other Agricultural Loans [Member]
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses				(219)
Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member] | State and Political Subdivision Loans [Member]
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses				(280)
Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member] | Unallocated [Member]
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses				726
As Reported [Member]
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses				15,252
Allowance for Credit Losses - Off-Balance Sheet credit Exposure				1,229
As Reported [Member] | Real Estate Loans [Member] | Residential [Member]
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses				1,135
As Reported [Member] | Real Estate Loans [Member] | Commercial [Member]
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses				7,050
As Reported [Member] | Real Estate Loans [Member] | Agricultural [Member]
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses				3,444
As Reported [Member] | Real Estate Loans [Member] | Construction [Member]
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses				698
As Reported [Member] | Consumer [Member]
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses				1,175
As Reported [Member] | Other Commercial Loans [Member]
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses				712
As Reported [Member] | Other Agricultural Loans [Member]
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses				270
As Reported [Member] | State and Political Subdivision Loans [Member]
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses				42
As Reported [Member] | Unallocated [Member]
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses				$ 726