LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES - Schedule of Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	$ 67,055	$ 47,357	$ 67,055	$ 47,357	$ 47,357
(Charge-offs)	(1,537)	(3,398)	(2,547)	(4,895)
Recoveries	94	95	220	153
Provision (Benefit) for Credit Losses on Loans Receivable	1,843	4,275	2,727	5,714
Ending Allowance	67,455	48,329	67,455	48,329	67,055
Farmland
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	161	161	162	167	167
(Charge-offs)	0	0	0	0
Recoveries	0	0	0	0
Provision (Benefit) for Credit Losses on Loans Receivable	77	(4)	76	(10)
Ending Allowance	238	157	238	157	162
Owner-occupied, nonfarm nonresidential properties
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	6,161	5,827	6,176	5,696	5,696
(Charge-offs)	0	(1,493)	(47)	(1,516)
Recoveries	17	15	17	29
Provision (Benefit) for Credit Losses on Loans Receivable	(136)	178	(104)	318
Ending Allowance	6,042	4,527	6,042	4,527	6,176
Agricultural production and other loans to farmers
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	38	39	37	37	37
(Charge-offs)	0	0	0	0
Recoveries	0	0	0	0
Provision (Benefit) for Credit Losses on Loans Receivable	(6)	(2)	(5)	0
Ending Allowance	32	37	32	37	37
Loans to depository institutions
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	0		20
(Charge-offs)	0		0
Recoveries	0		0
Provision (Benefit) for Credit Losses on Loans Receivable	16		(4)
Ending Allowance	16		16		20
Commercial and Industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	10,148	7,210	9,360	7,759	7,759
(Charge-offs)	(2)	(74)	(110)	(724)
Recoveries	2	0	47	0
Provision (Benefit) for Credit Losses on Loans Receivable	2,857	1,207	3,708	1,308
Ending Allowance	13,005	8,343	13,005	8,343	9,360
Obligations (other than securities and leases) of states and political subdivisions
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	1,770	1,371	1,823	1,369	1,369
(Charge-offs)	0	0	0	0
Recoveries	0	0	0	0
Provision (Benefit) for Credit Losses on Loans Receivable	(68)	(43)	(121)	(41)
Ending Allowance	1,702	1,328	1,702	1,328	1,823
Other loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	454	326	454	329	329
(Charge-offs)	0	0	0	0
Recoveries	0	0	0	0
Provision (Benefit) for Credit Losses on Loans Receivable	31	88	31	85
Ending Allowance	485	414	485	414	454
Other construction loans and all land development and other land loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	4,708	2,569	4,366	2,571	2,571
(Charge-offs)	0	0	0	0
Recoveries	0	0	0	0
Provision (Benefit) for Credit Losses on Loans Receivable	(381)	166	(39)	164
Ending Allowance	4,327	2,735	4,327	2,735	4,366
Multifamily (5 or more) residential properties
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	4,161	3,092	4,314	2,969	2,969
(Charge-offs)	0	(1,072)	0	(1,072)
Recoveries	0	0	0	0
Provision (Benefit) for Credit Losses on Loans Receivable	(565)	585	(718)	708
Ending Allowance	3,596	2,605	3,596	2,605	4,314
Non-owner occupied, nonfarm nonresidential properties
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	15,005	10,172	15,467	10,110	10,110
(Charge-offs)	0	0	0	0
Recoveries	0	0	3	0
Provision (Benefit) for Credit Losses on Loans Receivable	(1,653)	217	(2,118)	279
Ending Allowance	13,352	10,389	13,352	10,389	15,467
1-4 Family Construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	279	122	350	198	198
(Charge-offs)	(2)	0	(2)	0
Recoveries	0	0	0	0
Provision (Benefit) for Credit Losses on Loans Receivable	(9)	(22)	(80)	(98)
Ending Allowance	268	100	268	100	350
Home equity lines of credit
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	2,097	1,564	1,884	1,340	1,340
(Charge-offs)	0	0	0	0
Recoveries	0	10	0	10
Provision (Benefit) for Credit Losses on Loans Receivable	(283)	163	(70)	387
Ending Allowance	1,814	1,737	1,814	1,737	1,884
Residential Mortgages secured by first liens
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	15,362	9,099	15,910	8,958	8,958
(Charge-offs)	(871)	(8)	(944)	(42)
Recoveries	11	1	13	1
Provision (Benefit) for Credit Losses on Loans Receivable	1,007	770	530	945
Ending Allowance	15,509	9,862	15,509	9,862	15,910
Residential Mortgages secured by junior liens
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	1,583	1,451	1,732	1,343	1,343
(Charge-offs)	0	0	0	0
Recoveries	0	0	0	0
Provision (Benefit) for Credit Losses on Loans Receivable	139	121	(10)	229
Ending Allowance	1,722	1,572	1,722	1,572	1,732
Other revolving credit plans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	1,414	855	1,222	960	960
(Charge-offs)	(27)	(22)	(53)	(25)
Recoveries	6	2	25	3
Provision (Benefit) for Credit Losses on Loans Receivable	97	197	296	94
Ending Allowance	1,490	1,032	1,490	1,032	1,222
Automobile
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	206	262	207	275	275
(Charge-offs)	(37)	(5)	(40)	(5)
Recoveries	0	0	3	0
Provision (Benefit) for Credit Losses on Loans Receivable	6	(10)	5	(23)
Ending Allowance	175	247	175	247	207
Other consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	3,087	2,921	3,056	2,892	2,892
(Charge-offs)	(371)	(604)	(860)	(1,171)
Recoveries	14	18	35	30
Provision (Benefit) for Credit Losses on Loans Receivable	378	609	877	1,193
Ending Allowance	3,108	2,944	3,108	2,944	3,056
Credit cards
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	194	125	146	127	127
(Charge-offs)	(70)	(15)	(160)	(137)
Recoveries	5	25	12	29
Provision (Benefit) for Credit Losses on Loans Receivable	89	10	220	126
Ending Allowance	218	145	218	145	146
Overdrafts
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	227	191	369	257	257
(Charge-offs)	(157)	(105)	(331)	(203)
Recoveries	39	24	65	51
Provision (Benefit) for Credit Losses on Loans Receivable	247	45	253	50
Ending Allowance	$ 356	$ 155	$ 356	$ 155	$ 369

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477657/942-210-S45-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
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-Name Accounting Standards Codification
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-URI https://asc.fasb.org/1943274/2147478478/942-210-S50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
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Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount, excluding accrued interest, of increase in allowance for credit loss on financing receivable from recovery. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
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Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Amount, excluding accrued interest, of credit loss expense (reversal of expense) on financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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