Basis of Presentation, Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses	$ 21,652	$ 15,250	$ 18,552	$ 17,570	$ 17,556	$ 17,304
Allowance for Credit Losses - Off-Balance Sheet credit Exposure	1,391	1,229	165	165	165	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	2,675	1,195	1,056	1,015	1,070	1,147
Real Estate Loans [Member] | Commercial [Member]
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses	9,274	6,747	10,120	9,216	8,394	8,099
Real Estate Loans [Member] | Agricultural [Member]
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses	3,579	3,409	4,589	4,484	4,516	4,729
Real Estate Loans [Member] | Construction [Member]
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses	1,667	851	801	563	497	434
Consumer [Member]
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses	1,259	1,220	135	464	210	262
Other Commercial Loans [Member]
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses	2,477	712	1,040	1,173	1,380	1,023
Other Agricultural Loans [Member]
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses	268	250	489	446	551	558
State and Political Subdivision Loans [Member]
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses	52	42	322	323	285	281
Unallocated [Member]
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract]
Allowance for Credit Losses	$ 401	$ 824	0	$ (114)	$ 653	$ 771
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