LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES - Schedule of Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	$ 67,055	$ 47,357	$ 47,357
(Charge-offs)	(1,010)	(1,497)
Recoveries	126	58
Provision (Benefit) for Credit Losses on Loans Receivable	884	1,439
Ending Allowance	67,055	47,357	67,055
Farmland
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	162	167	167
(Charge-offs)	0	0
Recoveries	0	0
Provision (Benefit) for Credit Losses on Loans Receivable	(1)	(6)
Ending Allowance	161	161	162
Owner-occupied, nonfarm nonresidential properties
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	6,176	5,696	5,696
(Charge-offs)	(47)	(23)
Recoveries	0	14
Provision (Benefit) for Credit Losses on Loans Receivable	32	140
Ending Allowance	6,161	5,827	6,176
Agricultural production and other loans to farmers
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	37	37	37
(Charge-offs)	0	0
Recoveries	0	0
Provision (Benefit) for Credit Losses on Loans Receivable	1	2
Ending Allowance	38	39	37
Loans to depository institutions
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	20
(Charge-offs)	0
Recoveries	0
Provision (Benefit) for Credit Losses on Loans Receivable	(20)
Ending Allowance	0		20
Commercial and Industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	9,360	7,759	7,759
(Charge-offs)	(108)	(650)
Recoveries	45	0
Provision (Benefit) for Credit Losses on Loans Receivable	851	101
Ending Allowance	10,148	7,210	9,360
Obligations (other than securities and leases) of states and political subdivisions
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	1,823	1,369	1,369
(Charge-offs)	0	0
Recoveries	0	0
Provision (Benefit) for Credit Losses on Loans Receivable	(53)	2
Ending Allowance	1,770	1,371	1,823
Other loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	454	329	329
(Charge-offs)	0	0
Recoveries	0	0
Provision (Benefit) for Credit Losses on Loans Receivable	0	(3)
Ending Allowance	454	326	454
Other construction loans and all land development and other land loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	4,366	2,571	2,571
(Charge-offs)	0	0
Recoveries	0	0
Provision (Benefit) for Credit Losses on Loans Receivable	342	(2)
Ending Allowance	4,708	2,569	4,366
Multifamily (5 or more) residential properties
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	4,314	2,969	2,969
(Charge-offs)	0	0
Recoveries	0	0
Provision (Benefit) for Credit Losses on Loans Receivable	(153)	123
Ending Allowance	4,161	3,092	4,314
Non-owner occupied, nonfarm nonresidential properties
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	15,467	10,110	10,110
(Charge-offs)	0	0
Recoveries	3	0
Provision (Benefit) for Credit Losses on Loans Receivable	(465)	62
Ending Allowance	15,005	10,172	15,467
1-4 Family Construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	350	198	198
(Charge-offs)	0	0
Recoveries	0	0
Provision (Benefit) for Credit Losses on Loans Receivable	(71)	(76)
Ending Allowance	279	122	350
Home equity lines of credit
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	1,884	1,340	1,340
(Charge-offs)	0	0
Recoveries	0	0
Provision (Benefit) for Credit Losses on Loans Receivable	213	224
Ending Allowance	2,097	1,564	1,884
Residential Mortgages secured by first liens
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	15,910	8,958	8,958
(Charge-offs)	(73)	(34)
Recoveries	2	0
Provision (Benefit) for Credit Losses on Loans Receivable	(477)	175
Ending Allowance	15,362	9,099	15,910
Residential Mortgages secured by junior liens
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	1,732	1,343	1,343
(Charge-offs)	0	0
Recoveries	0	0
Provision (Benefit) for Credit Losses on Loans Receivable	(149)	108
Ending Allowance	1,583	1,451	1,732
Other revolving credit plans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	1,222	960	960
(Charge-offs)	(26)	(3)
Recoveries	19	1
Provision (Benefit) for Credit Losses on Loans Receivable	199	(103)
Ending Allowance	1,414	855	1,222
Automobile
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	207	275	275
(Charge-offs)	(3)	0
Recoveries	3	0
Provision (Benefit) for Credit Losses on Loans Receivable	(1)	(13)
Ending Allowance	206	262	207
Other consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	3,056	2,892	2,892
(Charge-offs)	(489)	(567)
Recoveries	21	12
Provision (Benefit) for Credit Losses on Loans Receivable	499	584
Ending Allowance	3,087	2,921	3,056
Credit cards
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	146	127	127
(Charge-offs)	(90)	(122)
Recoveries	7	4
Provision (Benefit) for Credit Losses on Loans Receivable	131	116
Ending Allowance	194	125	146
Overdrafts
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	369	257	257
(Charge-offs)	(174)	(98)
Recoveries	26	27
Provision (Benefit) for Credit Losses on Loans Receivable	6	5
Ending Allowance	$ 227	$ 191	$ 369