Loans and Allowance for Credit Losses - Schedule of Charge-off and Recovery Activity by Loan Type and Year of Origination (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Gross Charge-offs [Member]
Financing Receivable Recorded Investment [Line Items]
2024	$ (19)		$ (16)
2023	(45)		(52)
2022	(237)		(32)
2021	(37)		(12)
2020	(47)		(23)
Prior	(153)		(55)
Revolving Loans Amortized Cost	(344)		(448)
Revolving Loans Converted to Term	1
Total	(882)		(638)
Gross Recoveries [Member]
Financing Receivable Recorded Investment [Line Items]
2024	1
2023	1		4
2022	110		34
2021	5		5
2020	4		3
Prior	82		211
Revolving Loans Amortized Cost	11		3
Total	215		260
Net Charge-offs [Member]
Financing Receivable Recorded Investment [Line Items]
2024	(18)		(16)
2023	(44)		(48)
2022	(127)		2
2021	(32)		(7)
2020	(43)		(20)
Prior	(71)		156
Revolving Loans Amortized Cost	(333)		(445)
Total	(667)		(378)
Commercial Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
2024	64,642	$ 212,570
2023	215,524	381,734
2022	364,826	257,437
2021	240,609	180,191
2020	169,821	76,935
Prior	252,359	188,808
Revolving Loans Amortized Cost	488,636	461,427
Revolving Loans Converted to Term	775	753
Total	1,797,192	1,759,855
Commercial Real Estate [Member] | Gross Charge-offs [Member]
Financing Receivable Recorded Investment [Line Items]
2022	(16)
Prior			(1)
Revolving Loans Amortized Cost	(1)
Total	(17)		(1)
Commercial Real Estate [Member] | Gross Recoveries [Member]
Financing Receivable Recorded Investment [Line Items]
Prior	7		7
Total	7		7
Commercial Real Estate [Member] | Net Charge-offs [Member]
Financing Receivable Recorded Investment [Line Items]
2022	(16)
Prior	7		6
Revolving Loans Amortized Cost	(1)
Total	10		6
Commercial and Industrial [Member]
Financing Receivable Recorded Investment [Line Items]
2024	28,847	129,915
2023	114,906	111,285
2022	101,941	54,661
2021	52,714	52,479
2020	51,990	30,168
Prior	47,803	10,456
Revolving Loans Amortized Cost	249,076	207,583
Revolving Loans Converted to Term	1,758	1,780
Total	649,035	598,327
Commercial and Industrial [Member] | Gross Charge-offs [Member]
Financing Receivable Recorded Investment [Line Items]
2023			(1)
2022	(168)
2021	(3)
2020	(40)		(3)
Prior	(104)
Revolving Loans Amortized Cost	(316)		(431)
Total	(631)		(435)
Commercial and Industrial [Member] | Gross Recoveries [Member]
Financing Receivable Recorded Investment [Line Items]
2022	104
Prior	29		4
Revolving Loans Amortized Cost	8
Revolving Loans Converted to Term	1
Total	142		4
Commercial and Industrial [Member] | Net Charge-offs [Member]
Financing Receivable Recorded Investment [Line Items]
2023			(1)
2022	(64)
2021	(3)
2020	(40)		(3)
Prior	(75)		4
Revolving Loans Amortized Cost	(308)		(431)
Revolving Loans Converted to Term	1
Total	(489)		(431)
Residential Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
2024	5,898	35,040
2023	37,547	29,979
2022	38,523	277,798
2021	279,170	5,205
2020	9,236	12,662
Prior	155,735	132,104
Revolving Loans Amortized Cost	54,775	62,409
Revolving Loans Converted to Term	1,104	1,131
Total	581,988	556,328
Residential Real Estate [Member] | Gross Charge-offs [Member]
Financing Receivable Recorded Investment [Line Items]
2021	(2)
Prior	(15)		(1)
Revolving Loans Amortized Cost	(10)		(4)
Total	(27)		(5)
Residential Real Estate [Member] | Gross Recoveries [Member]
Financing Receivable Recorded Investment [Line Items]
Prior	11		16
Total	11		16
Residential Real Estate [Member] | Net Charge-offs [Member]
Financing Receivable Recorded Investment [Line Items]
2021	(2)
Prior	(4)		15
Revolving Loans Amortized Cost	(10)		(4)
Total	(16)		11
Agricultural Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
2024	6,461	23,311
2023	22,778	26,920
2022	25,472	18,011
2021	16,901	18,551
2020	16,643	10,754
Prior	32,803	23,626
Revolving Loans Amortized Cost	76,956	74,652
Revolving Loans Converted to Term	277	289
Total	198,291	196,114
Agricultural Real Estate [Member] | Gross Recoveries [Member]
Financing Receivable Recorded Investment [Line Items]
Prior	1
Total	1
Agricultural Real Estate [Member] | Net Charge-offs [Member]
Financing Receivable Recorded Investment [Line Items]
Prior	1
Total	1
Agricultural [Member]
Financing Receivable Recorded Investment [Line Items]
2024	6,381	12,463
2023	17,447	7,373
2022	13,193	5,279
2021	8,029	7,777
2020	12,297	3,246
Prior	18,679	3,894
Revolving Loans Amortized Cost	73,211	78,500
Revolving Loans Converted to Term	75	55
Total	149,312	118,587
Agricultural [Member] | Gross Charge-offs [Member]
Financing Receivable Recorded Investment [Line Items]
2022	(25)
2021	(1)
Total	(26)
Agricultural [Member] | Gross Recoveries [Member]
Financing Receivable Recorded Investment [Line Items]
Prior			155
Total			155
Agricultural [Member] | Net Charge-offs [Member]
Financing Receivable Recorded Investment [Line Items]
2022	(25)
2021	(1)
Prior			155
Total	(26)		155
Consumer [Member]
Financing Receivable Recorded Investment [Line Items]
2024	29,390	47,069
2023	25,135	24,861
2022	22,187	10,547
2021	9,299	4,939
2020	4,272	1,330
Prior	3,909	2,908
Revolving Loans Amortized Cost	12,152	12,035
Revolving Loans Converted to Term	1	1
Total	106,345	103,690
Consumer [Member] | Gross Charge-offs [Member]
Financing Receivable Recorded Investment [Line Items]
2024	(19)		(16)
2023	(45)		(51)
2022	(28)		(32)
2021	(31)		(12)
2020	(7)		(20)
Prior	(34)		(53)
Revolving Loans Amortized Cost	(17)		(13)
Total	(181)		(197)
Consumer [Member] | Gross Recoveries [Member]
Financing Receivable Recorded Investment [Line Items]
2024	1
2023	1		4
2022	6		34
2021	5		5
2020	4		3
Prior	34		29
Revolving Loans Amortized Cost	3		3
Total	54		78
Consumer [Member] | Net Charge-offs [Member]
Financing Receivable Recorded Investment [Line Items]
2024	(18)		(16)
2023	(44)		(47)
2022	(22)		2
2021	(26)		(7)
2020	(3)		(17)
Prior			(24)
Revolving Loans Amortized Cost	(14)		(10)
Total	(127)		$ (119)
Total Loans Portfolio Segment [Member]
Financing Receivable Recorded Investment [Line Items]
2024	141,619	460,368
2023	433,337	582,152
2022	566,142	623,733
2021	606,722	269,142
2020	264,259	135,095
Prior	511,288	361,796
Revolving Loans Amortized Cost	954,806	896,606
Revolving Loans Converted to Term	3,990	4,009
Total	$ 3,482,163	$ 3,332,901