Loans Receivable and Allowance for Credit Losses - Schedule of Allowance for Loan Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, Beginning Balance	$ 43,436	$ 37,588	$ 34,340
(Charge-offs)	(4,254)	(2,985)	(3,384)
Recoveries	813	847	629
Provision (Benefit) for Credit Losses on Loans Receivable	5,837	7,986	6,003
Allowance for loan losses, Ending Balance	45,832	43,436	37,588
Farmland
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, Beginning Balance	159	151	221
(Charge-offs)	0	0	0
Recoveries	0	0	0
Provision (Benefit) for Credit Losses on Loans Receivable	(33)	8	(70)
Allowance for loan losses, Ending Balance	126	159	151
Owner-occupied, nonfarm nonresidential properties
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, Beginning Balance	2,905	3,339	3,700
(Charge-offs)	(26)	(21)	(584)
Recoveries	29	15	10
Provision (Benefit) for Credit Losses on Loans Receivable	1,041	(428)	213
Allowance for loan losses, Ending Balance	3,949	2,905	3,339
Agricultural production and other loans to farmers
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, Beginning Balance	6	9	24
(Charge-offs)	0	0	0
Recoveries	0	0	0
Provision (Benefit) for Credit Losses on Loans Receivable	1	(3)	(15)
Allowance for loan losses, Ending Balance	7	6	9
Commercial and Industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, Beginning Balance	9,766	8,837	6,233
(Charge-offs)	(392)	(175)	(163)
Recoveries	438	139	203
Provision (Benefit) for Credit Losses on Loans Receivable	(379)	965	2,564
Allowance for loan losses, Ending Balance	9,433	9,766	8,837
Obligations (other than securities and leases) of states and political subdivisions
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, Beginning Balance	1,863	1,649	998
(Charge-offs)	0	0	(407)
Recoveries	0	0	30
Provision (Benefit) for Credit Losses on Loans Receivable	750	214	1,028
Allowance for loan losses, Ending Balance	2,613	1,863	1,649
Other loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, Beginning Balance	456	149	68
(Charge-offs)	0	0	0
Recoveries	0	0	0
Provision (Benefit) for Credit Losses on Loans Receivable	(69)	307	81
Allowance for loan losses, Ending Balance	387	456	149
Other construction loans and all land development and other land loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, Beginning Balance	3,253	2,198	1,956
(Charge-offs)	0	0	(282)
Recoveries	0	0	0
Provision (Benefit) for Credit Losses on Loans Receivable	780	1,055	524
Allowance for loan losses, Ending Balance	4,033	3,253	2,198
Multifamily (5 or more) residential properties
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, Beginning Balance	2,353	2,289	2,724
(Charge-offs)	(65)	0	0
Recoveries	6	0	0
Provision (Benefit) for Credit Losses on Loans Receivable	(1,264)	64	(435)
Allowance for loan losses, Ending Balance	1,030	2,353	2,289
Non-owner occupied, nonfarm nonresidential properties
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, Beginning Balance	7,653	6,481	8,658
(Charge-offs)	(694)	(335)	(49)
Recoveries	10	336	0
Provision (Benefit) for Credit Losses on Loans Receivable	2,201	1,171	(2,128)
Allowance for loan losses, Ending Balance	9,170	7,653	6,481
1-4 Family Construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, Beginning Balance	327	158	82
(Charge-offs)	0	0	0
Recoveries	0	0	0
Provision (Benefit) for Credit Losses on Loans Receivable	29	169	76
Allowance for loan losses, Ending Balance	356	327	158
Home equity lines of credit
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, Beginning Balance	1,173	1,169	985
(Charge-offs)	(10)	0	(7)
Recoveries	5	12	5
Provision (Benefit) for Credit Losses on Loans Receivable	(337)	(8)	186
Allowance for loan losses, Ending Balance	831	1,173	1,169
Residential Mortgages secured by first liens
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, Beginning Balance	8,484	6,943	4,539
(Charge-offs)	(117)	(51)	(79)
Recoveries	3	28	47
Provision (Benefit) for Credit Losses on Loans Receivable	(320)	1,564	2,436
Allowance for loan losses, Ending Balance	8,050	8,484	6,943
Residential Mortgages secured by junior liens
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, Beginning Balance	1,035	546	241
(Charge-offs)	0	0	(3)
Recoveries	0	0	0
Provision (Benefit) for Credit Losses on Loans Receivable	441	489	308
Allowance for loan losses, Ending Balance	1,476	1,035	546
Other revolving credit plans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, Beginning Balance	722	528	507
(Charge-offs)	(119)	(92)	(41)
Recoveries	30	50	13
Provision (Benefit) for Credit Losses on Loans Receivable	340	236	49
Allowance for loan losses, Ending Balance	973	722	528
Automobile
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, Beginning Balance	271	263	132
(Charge-offs)	(56)	(28)	(26)
Recoveries	1	2	3
Provision (Benefit) for Credit Losses on Loans Receivable	142	34	154
Allowance for loan losses, Ending Balance	358	271	263
Other consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, Beginning Balance	2,665	2,546	2,962
(Charge-offs)	(1,982)	(1,623)	(1,193)
Recoveries	134	89	140
Provision (Benefit) for Credit Losses on Loans Receivable	1,836	1,653	637
Allowance for loan losses, Ending Balance	2,653	2,665	2,546
Credit cards
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, Beginning Balance	67	92	66
(Charge-offs)	(189)	(99)	(112)
Recoveries	18	38	18
Provision (Benefit) for Credit Losses on Loans Receivable	199	36	120
Allowance for loan losses, Ending Balance	95	67	92
Overdrafts
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, Beginning Balance	278	241	244
(Charge-offs)	(604)	(561)	(438)
Recoveries	139	138	160
Provision (Benefit) for Credit Losses on Loans Receivable	479	460	275
Allowance for loan losses, Ending Balance	$ 292	$ 278	$ 241