LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES - Schedule of Risk Rating (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2024	Dec. 31, 2023
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 4,591,908	$ 4,468,476
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total	3,057,394	2,927,203
Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total	15,265	95,055
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total	93,487	59,027
Farmland
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	100	3,250
One fiscal year before current year	3,182	12,897
Two fiscal years before current year	12,241	7,151
Three fiscal years before current year	6,568	1,465
Four fiscal years before current year	1,443	815
More than four fiscal years before current year	7,901	7,605
Revolving Loans Amortized Cost Basis	385	302
Revolving Loans Converted to Term	0	0
Total	31,820	33,485
Current period gross write offs
2024	0	0
2023	0	0
2022	0	0
2021	0	0
2020	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	0	0
Farmland | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	100	3,250
One fiscal year before current year	3,182	12,897
Two fiscal years before current year	6,816	6,845
Three fiscal years before current year	6,568	1,465
Four fiscal years before current year	1,443	815
More than four fiscal years before current year	7,232	6,828
Revolving Loans Amortized Cost Basis	385	302
Revolving Loans Converted to Term	0	0
Total	25,726	32,402
Farmland | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One fiscal year before current year	0	0
Two fiscal years before current year	5,425	0
Three fiscal years before current year	0	0
Four fiscal years before current year	0	0
More than four fiscal years before current year	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	5,425	0
Farmland | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One fiscal year before current year	0	0
Two fiscal years before current year	0	306
Three fiscal years before current year	0	0
Four fiscal years before current year	0	0
More than four fiscal years before current year	669	777
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	669	1,083
Owner-occupied, nonfarm nonresidential properties
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	72,302	65,405
One fiscal year before current year	66,485	132,505
Two fiscal years before current year	124,175	109,616
Three fiscal years before current year	103,989	58,201
Four fiscal years before current year	41,150	56,511
More than four fiscal years before current year	100,551	76,452
Revolving Loans Amortized Cost Basis	22,847	13,220
Revolving Loans Converted to Term	0	0
Total	531,499	511,910
Current period gross write offs
2024	0	0
2023	0	0
2022	0	0
2021	0	0
2020	0	0
Prior	699	26
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	699	26
Owner-occupied, nonfarm nonresidential properties | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	58,095	64,237
One fiscal year before current year	65,358	125,894
Two fiscal years before current year	119,055	107,740
Three fiscal years before current year	103,035	44,286
Four fiscal years before current year	41,150	49,366
More than four fiscal years before current year	98,456	73,649
Revolving Loans Amortized Cost Basis	22,101	9,921
Revolving Loans Converted to Term	0	0
Total	507,250	475,093
Owner-occupied, nonfarm nonresidential properties | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	320
One fiscal year before current year	0	6,611
Two fiscal years before current year	86	1,180
Three fiscal years before current year	258	13,623
Four fiscal years before current year	0	407
More than four fiscal years before current year	542	210
Revolving Loans Amortized Cost Basis	563	3,133
Revolving Loans Converted to Term	0	0
Total	1,449	25,484
Owner-occupied, nonfarm nonresidential properties | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	14,207	848
One fiscal year before current year	1,127	0
Two fiscal years before current year	5,034	696
Three fiscal years before current year	696	292
Four fiscal years before current year	0	6,738
More than four fiscal years before current year	1,553	2,593
Revolving Loans Amortized Cost Basis	183	166
Revolving Loans Converted to Term	0	0
Total	22,800	11,333
Agricultural production and other loans to farmers
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	72	703
One fiscal year before current year	588	34
Two fiscal years before current year	26	89
Three fiscal years before current year	25	60
Four fiscal years before current year	48	5
More than four fiscal years before current year	151	159
Revolving Loans Amortized Cost Basis	823	602
Revolving Loans Converted to Term	0	0
Total	1,733	1,652
Current period gross write offs
2024	0	0
2023	0	0
2022	0	0
2021	0	0
2020	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	0	0
Agricultural production and other loans to farmers | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	72	703
One fiscal year before current year	588	34
Two fiscal years before current year	26	89
Three fiscal years before current year	25	60
Four fiscal years before current year	48	5
More than four fiscal years before current year	151	159
Revolving Loans Amortized Cost Basis	823	602
Revolving Loans Converted to Term	0	0
Total	1,733	1,652
Agricultural production and other loans to farmers | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One fiscal year before current year	0	0
Two fiscal years before current year	0	0
Three fiscal years before current year	0	0
Four fiscal years before current year	0	0
More than four fiscal years before current year	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	0	0
Agricultural production and other loans to farmers | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One fiscal year before current year	0	0
Two fiscal years before current year	0	0
Three fiscal years before current year	0	0
Four fiscal years before current year	0	0
More than four fiscal years before current year	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	0	0
Commercial and Industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	119,375	86,043
One fiscal year before current year	53,436	148,366
Two fiscal years before current year	123,760	148,515
Three fiscal years before current year	71,508	33,936
Four fiscal years before current year	26,577	10,277
More than four fiscal years before current year	24,797	16,385
Revolving Loans Amortized Cost Basis	299,988	282,920
Revolving Loans Converted to Term	0	0
Total	719,441	726,442
Current period gross write offs
2024	0	50
2023	301	0
2022	50	0
2021	537	191
2020	1	0
Prior	43	0
Revolving Loans Amortized Cost Basis	1,428	151
Revolving Loans Converted to Term	0	0
Total	2,360	392
Commercial and Industrial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	118,480	78,325
One fiscal year before current year	48,338	140,178
Two fiscal years before current year	122,655	141,439
Three fiscal years before current year	69,888	33,475
Four fiscal years before current year	26,474	6,662
More than four fiscal years before current year	23,130	14,709
Revolving Loans Amortized Cost Basis	263,470	239,193
Revolving Loans Converted to Term	0	0
Total	672,435	653,981
Commercial and Industrial | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	11	7,718
One fiscal year before current year	59	7,803
Two fiscal years before current year	569	2,795
Three fiscal years before current year	0	65
Four fiscal years before current year	51	139
More than four fiscal years before current year	36	21
Revolving Loans Amortized Cost Basis	4,864	33,489
Revolving Loans Converted to Term	0	0
Total	5,590	52,030
Commercial and Industrial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	884	0
One fiscal year before current year	5,039	385
Two fiscal years before current year	536	4,281
Three fiscal years before current year	1,620	396
Four fiscal years before current year	52	3,476
More than four fiscal years before current year	1,631	1,655
Revolving Loans Amortized Cost Basis	31,654	10,238
Revolving Loans Converted to Term	0	0
Total	41,416	20,431
Obligations (other than securities and leases) of states and political subdivisions
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	7,853	24,964
One fiscal year before current year	25,075	16,791
Two fiscal years before current year	16,102	31,768
Three fiscal years before current year	30,777	12,399
Four fiscal years before current year	11,565	4,190
More than four fiscal years before current year	47,057	58,518
Revolving Loans Amortized Cost Basis	3,994	3,571
Revolving Loans Converted to Term	0	0
Total	142,423	152,201
Current period gross write offs
2024	0	0
2023	0	0
2022	0	0
2021	0	0
2020	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	0	0
Obligations (other than securities and leases) of states and political subdivisions | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	7,853	24,964
One fiscal year before current year	25,075	16,791
Two fiscal years before current year	16,102	31,768
Three fiscal years before current year	30,777	12,399
Four fiscal years before current year	11,565	4,190
More than four fiscal years before current year	47,057	45,331
Revolving Loans Amortized Cost Basis	3,994	3,571
Revolving Loans Converted to Term	0	0
Total	142,423	139,014
Obligations (other than securities and leases) of states and political subdivisions | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One fiscal year before current year	0	0
Two fiscal years before current year	0	0
Three fiscal years before current year	0	0
Four fiscal years before current year	0	0
More than four fiscal years before current year	0	13,187
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	0	13,187
Obligations (other than securities and leases) of states and political subdivisions | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One fiscal year before current year	0	0
Two fiscal years before current year	0	0
Three fiscal years before current year	0	0
Four fiscal years before current year	0	0
More than four fiscal years before current year	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	0	0
Other loans
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	886	3,649
One fiscal year before current year	3,242	12,211
Two fiscal years before current year	12,173	5,289
Three fiscal years before current year	4,891	1,809
Four fiscal years before current year	1,455	288
More than four fiscal years before current year	276	0
Revolving Loans Amortized Cost Basis	3,209	2,261
Revolving Loans Converted to Term	0	0
Total	26,132	25,507
Current period gross write offs
2024	0	0
2023	0	0
2022	0	0
2021	0	0
2020	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	0	0
Other loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	886	3,649
One fiscal year before current year	3,242	12,211
Two fiscal years before current year	12,173	5,289
Three fiscal years before current year	4,891	1,809
Four fiscal years before current year	1,455	288
More than four fiscal years before current year	276	0
Revolving Loans Amortized Cost Basis	3,209	2,261
Revolving Loans Converted to Term	0	0
Total	26,132	25,507
Other loans | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One fiscal year before current year	0	0
Two fiscal years before current year	0	0
Three fiscal years before current year	0	0
Four fiscal years before current year	0	0
More than four fiscal years before current year	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	0	0
Other loans | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One fiscal year before current year	0	0
Two fiscal years before current year	0	0
Three fiscal years before current year	0	0
Four fiscal years before current year	0	0
More than four fiscal years before current year	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	0	0
Other construction loans and all land development and other land loans
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	60,527	92,321
One fiscal year before current year	101,650	197,166
Two fiscal years before current year	99,717	23,484
Three fiscal years before current year	17,068	15,540
Four fiscal years before current year	806	3,255
More than four fiscal years before current year	3,578	1,129
Revolving Loans Amortized Cost Basis	5,282	7,463
Revolving Loans Converted to Term	0	0
Total	288,628	340,358
Current period gross write offs
2024	0	0
2023	0	0
2022	0	0
2021	0	0
2020	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	0	0
Other construction loans and all land development and other land loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	60,527	92,321
One fiscal year before current year	101,650	197,166
Two fiscal years before current year	99,717	23,484
Three fiscal years before current year	17,068	15,540
Four fiscal years before current year	806	1,706
More than four fiscal years before current year	2,125	1,129
Revolving Loans Amortized Cost Basis	5,220	7,400
Revolving Loans Converted to Term	0	0
Total	287,113	338,746
Other construction loans and all land development and other land loans | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One fiscal year before current year	0	0
Two fiscal years before current year	0	0
Three fiscal years before current year	0	0
Four fiscal years before current year	0	0
More than four fiscal years before current year	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	0	0
Other construction loans and all land development and other land loans | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One fiscal year before current year	0	0
Two fiscal years before current year	0	0
Three fiscal years before current year	0	0
Four fiscal years before current year	0	1,549
More than four fiscal years before current year	1,453	0
Revolving Loans Amortized Cost Basis	62	63
Revolving Loans Converted to Term	0	0
Total	1,515	1,612
Multifamily (5 or more) residential properties
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	34,048	51,709
One fiscal year before current year	52,307	127,027
Two fiscal years before current year	214,023	70,261
Three fiscal years before current year	56,538	25,232
Four fiscal years before current year	24,629	10,928
More than four fiscal years before current year	25,938	19,786
Revolving Loans Amortized Cost Basis	986	754
Revolving Loans Converted to Term	0	0
Total	408,469	305,697
Current period gross write offs
2024	0	0
2023	0	0
2022	0	0
2021	0	0
2020	0	0
Prior	0	65
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	0	65
Multifamily (5 or more) residential properties | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	34,048	49,566
One fiscal year before current year	50,197	127,027
Two fiscal years before current year	214,023	70,261
Three fiscal years before current year	56,538	25,232
Four fiscal years before current year	21,908	10,928
More than four fiscal years before current year	25,938	19,786
Revolving Loans Amortized Cost Basis	986	754
Revolving Loans Converted to Term	0	0
Total	403,638	303,554
Multifamily (5 or more) residential properties | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	1,346
One fiscal year before current year	0	0
Two fiscal years before current year	0	0
Three fiscal years before current year	0	0
Four fiscal years before current year	0	0
More than four fiscal years before current year	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	0	1,346
Multifamily (5 or more) residential properties | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	797
One fiscal year before current year	2,110	0
Two fiscal years before current year	0	0
Three fiscal years before current year	0	0
Four fiscal years before current year	2,721	0
More than four fiscal years before current year	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	4,831	797
Non-owner occupied, nonfarm nonresidential properties
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	87,887	199,121
One fiscal year before current year	210,560	333,867
Two fiscal years before current year	323,507	195,594
Three fiscal years before current year	188,015	50,014
Four fiscal years before current year	45,533	58,416
More than four fiscal years before current year	153,029	136,704
Revolving Loans Amortized Cost Basis	7,470	10,317
Revolving Loans Converted to Term	0	0
Total	1,016,001	984,033
Current period gross write offs
2024	0	0
2023	0	358
2022	33	0
2021	296	0
2020	0	88
Prior	0	0
Revolving Loans Amortized Cost Basis	20	248
Revolving Loans Converted to Term	0	0
Total	349	694
Non-owner occupied, nonfarm nonresidential properties | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	76,393	198,343
One fiscal year before current year	209,794	332,733
Two fiscal years before current year	322,234	195,106
Three fiscal years before current year	188,015	42,216
Four fiscal years before current year	38,285	55,150
More than four fiscal years before current year	149,177	125,532
Revolving Loans Amortized Cost Basis	7,046	8,174
Revolving Loans Converted to Term	0	0
Total	990,944	957,254
Non-owner occupied, nonfarm nonresidential properties | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One fiscal year before current year	0	0
Two fiscal years before current year	214	0
Three fiscal years before current year	0	1,887
Four fiscal years before current year	1,805	0
More than four fiscal years before current year	358	688
Revolving Loans Amortized Cost Basis	424	433
Revolving Loans Converted to Term	0	0
Total	2,801	3,008
Non-owner occupied, nonfarm nonresidential properties | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	11,494	778
One fiscal year before current year	766	1,134
Two fiscal years before current year	1,059	488
Three fiscal years before current year	0	5,911
Four fiscal years before current year	5,443	3,266
More than four fiscal years before current year	3,494	10,484
Revolving Loans Amortized Cost Basis	0	1,710
Revolving Loans Converted to Term	0	0
Total	$ 22,256	$ 23,771