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Loans, Allowance for Credit Losses - Loans and Amortized Cost Basis of Loans Under CECL Methodology (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021
Loans And Leases Receivable, Allowance For Loan Losses [Abstract]
Collectively evaluated for impairment	$ 19,445		$ 102
Individually evaluated for impairment	2,207		18,450
Total Allowance for Credit Losses - Loans	21,652	$ 15,250	18,552	$ 17,570	$ 17,556	$ 17,304
Collectively evaluated for impairment	2,146,146		1,709,724
Individually evaluated for impairment	16,696		11,969
Loans acquired with deteriorated credit quality			3,306
Total Loans	2,162,842		1,724,999
Residential [Member]
Loans And Leases Receivable, Allowance For Loan Losses [Abstract]
Total Loans	308,970
Commercial [Member]
Loans And Leases Receivable, Allowance For Loan Losses [Abstract]
Total Loans	1,080,513
Construction [Member]
Loans And Leases Receivable, Allowance For Loan Losses [Abstract]
Total Loans	156,927
Real Estate Loans [Member] | Residential [Member]
Loans And Leases Receivable, Allowance For Loan Losses [Abstract]
Collectively evaluated for impairment	2,552		4
Individually evaluated for impairment	123		1,052
Total Allowance for Credit Losses - Loans	2,675	1,195	1,056	1,015	1,070	1,147
Collectively evaluated for impairment	356,592		209,869
Individually evaluated for impairment	1,433		335
Loans acquired with deteriorated credit quality			9
Total Loans	358,025		210,213
Real Estate Loans [Member] | Commercial [Member]
Loans And Leases Receivable, Allowance For Loan Losses [Abstract]
Collectively evaluated for impairment	9,110		57
Individually evaluated for impairment	164		10,063
Total Allowance for Credit Losses - Loans	9,274	6,747	10,120	9,216	8,394	8,099
Collectively evaluated for impairment	1,075,534		869,038
Individually evaluated for impairment	4,979		5,675
Loans acquired with deteriorated credit quality			1,856
Total Loans	1,080,513		876,569
Real Estate Loans [Member] | Agricultural [Member]
Loans And Leases Receivable, Allowance For Loan Losses [Abstract]
Collectively evaluated for impairment	3,493		24
Individually evaluated for impairment	86		4,565
Total Allowance for Credit Losses - Loans	3,579	3,409	4,589	4,484	4,516	4,729
Collectively evaluated for impairment	308,010		306,793
Individually evaluated for impairment	4,292		5,380
Loans acquired with deteriorated credit quality			1,441
Total Loans	312,302		313,614
Real Estate Loans [Member] | Construction [Member]
Loans And Leases Receivable, Allowance For Loan Losses [Abstract]
Collectively evaluated for impairment	1,410		0
Individually evaluated for impairment	257		801
Total Allowance for Credit Losses - Loans	1,667	851	801	563	497	434
Collectively evaluated for impairment	154,570		80,691
Individually evaluated for impairment	2,357		0
Loans acquired with deteriorated credit quality			0
Total Loans	156,927		80,691
Consumer [Member]
Loans And Leases Receivable, Allowance For Loan Losses [Abstract]
Collectively evaluated for impairment	446		4
Individually evaluated for impairment	813		131
Total Allowance for Credit Losses - Loans	1,259	1,220	135	464	210	262
Collectively evaluated for impairment	41,625		86,646
Individually evaluated for impairment	1,076		4
Loans acquired with deteriorated credit quality			0
Total Loans	42,701		86,650
Other Commercial Loans [Member]
Loans And Leases Receivable, Allowance For Loan Losses [Abstract]
Collectively evaluated for impairment	1,713		13
Individually evaluated for impairment	764		1,027
Total Allowance for Credit Losses - Loans	2,477	712	1,040	1,173	1,380	1,023
Collectively evaluated for impairment	118,024		63,120
Individually evaluated for impairment	2,264		102
Loans acquired with deteriorated credit quality			0
Total Loans	120,288		63,222
Other Commercial Loans [Member] | Construction [Member]
Loans And Leases Receivable, Allowance For Loan Losses [Abstract]
Total Loans	120,288
Other Agricultural Loans [Member]
Loans And Leases Receivable, Allowance For Loan Losses [Abstract]
Collectively evaluated for impairment	268		0
Individually evaluated for impairment	0		489
Total Allowance for Credit Losses - Loans	268	250	489	446	551	558
Collectively evaluated for impairment	30,320		34,359
Individually evaluated for impairment	295		473
Loans acquired with deteriorated credit quality			0
Total Loans	30,615		34,832
State and Political Subdivision Loans [Member]
Loans And Leases Receivable, Allowance For Loan Losses [Abstract]
Collectively evaluated for impairment	52		0
Individually evaluated for impairment	0		322
Total Allowance for Credit Losses - Loans	52	42	322	323	285	281
Collectively evaluated for impairment	61,471		59,208
Individually evaluated for impairment	0		0
Loans acquired with deteriorated credit quality			0
Total Loans	61,471		59,208
Unallocated [Member]
Loans And Leases Receivable, Allowance For Loan Losses [Abstract]
Collectively evaluated for impairment	401
Individually evaluated for impairment	0
Total Allowance for Credit Losses - Loans	401	$ 824	$ 0	$ (114)	$ 653	$ 771
Collectively evaluated for impairment	0
Individually evaluated for impairment	0
Total Loans	$ 0

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