LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES - Schedule of Aging of Recorded Investment in Past Due Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Financing Receivable, Past Due [Line Items]
Loans receivable	$ 6,434,020	$ 6,493,740
30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	18,209	26,328
60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	7,315	15,554
Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	25,914	20,969
Total Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	51,438	62,851
Loans Receivable Not Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	6,382,582	6,430,889
Farmland
Financing Receivable, Past Due [Line Items]
Loans receivable	27,049	27,583
Farmland | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Farmland | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	358	0
Farmland | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	255	241
Farmland | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	613	241
Farmland | Loans Receivable Not Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	26,436	27,342
Owner-occupied, nonfarm nonresidential properties
Financing Receivable, Past Due [Line Items]
Loans receivable	630,332	636,444
Owner-occupied, nonfarm nonresidential properties | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	904	3,962
Owner-occupied, nonfarm nonresidential properties | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	821	4,316
Owner-occupied, nonfarm nonresidential properties | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	5,745	2,454
Owner-occupied, nonfarm nonresidential properties | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	7,470	10,732
Owner-occupied, nonfarm nonresidential properties | Loans Receivable Not Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	622,862	625,712
Agricultural production and other loans to farmers
Financing Receivable, Past Due [Line Items]
Loans receivable	6,053	5,989
Agricultural production and other loans to farmers | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Agricultural production and other loans to farmers | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Agricultural production and other loans to farmers | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Agricultural production and other loans to farmers | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Agricultural production and other loans to farmers | Loans Receivable Not Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	6,053	5,989
Loans to depository institutions
Financing Receivable, Past Due [Line Items]
Loans receivable	0	2,439
Loans to depository institutions | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Loans to depository institutions | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Loans to depository institutions | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Loans to depository institutions | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Loans to depository institutions | Loans Receivable Not Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	2,439
Commercial and Industrial
Financing Receivable, Past Due [Line Items]
Loans receivable	814,246	778,978
Commercial and Industrial | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	745	975
Commercial and Industrial | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	605	1,376
Commercial and Industrial | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	8,004	6,715
Commercial and Industrial | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	9,354	9,066
Commercial and Industrial | Loans Receivable Not Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	804,892	769,912
Obligations (other than securities and leases) of states and political subdivisions
Financing Receivable, Past Due [Line Items]
Loans receivable	169,180	171,486
Obligations (other than securities and leases) of states and political subdivisions | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Obligations (other than securities and leases) of states and political subdivisions | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Obligations (other than securities and leases) of states and political subdivisions | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Obligations (other than securities and leases) of states and political subdivisions | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Obligations (other than securities and leases) of states and political subdivisions | Loans Receivable Not Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	169,180	171,486
Other loans
Financing Receivable, Past Due [Line Items]
Loans receivable	47,344	47,719
Other loans | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Other loans | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Other loans | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Other loans | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Other loans | Loans Receivable Not Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	47,344	47,719
Other construction loans and all land development and other land loans
Financing Receivable, Past Due [Line Items]
Loans receivable	423,467	366,174
Other construction loans and all land development and other land loans | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	174	2,660
Other construction loans and all land development and other land loans | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	62
Other construction loans and all land development and other land loans | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	1,565	1,565
Other construction loans and all land development and other land loans | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	1,739	4,287
Other construction loans and all land development and other land loans | Loans Receivable Not Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	421,728	361,887
Multifamily (5 or more) residential properties
Financing Receivable, Past Due [Line Items]
Loans receivable	645,921	709,832
Multifamily (5 or more) residential properties | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	437	0
Multifamily (5 or more) residential properties | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Multifamily (5 or more) residential properties | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	645	645
Multifamily (5 or more) residential properties | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	1,082	645
Multifamily (5 or more) residential properties | Loans Receivable Not Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	644,839	709,187
Non-owner occupied, nonfarm nonresidential properties
Financing Receivable, Past Due [Line Items]
Loans receivable	1,368,029	1,419,643
Non-owner occupied, nonfarm nonresidential properties | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	669	3,171
Non-owner occupied, nonfarm nonresidential properties | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	200	0
Non-owner occupied, nonfarm nonresidential properties | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	2,256	0
Non-owner occupied, nonfarm nonresidential properties | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	3,125	3,171
Non-owner occupied, nonfarm nonresidential properties | Loans Receivable Not Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	1,364,904	1,416,472
1-4 Family Construction
Financing Receivable, Past Due [Line Items]
Loans receivable	33,131	41,659
1-4 Family Construction | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
1-4 Family Construction | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
1-4 Family Construction | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
1-4 Family Construction | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
1-4 Family Construction | Loans Receivable Not Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	33,131	41,659
Home equity lines of credit
Financing Receivable, Past Due [Line Items]
Loans receivable	257,851	250,823
Home equity lines of credit | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	349	1,115
Home equity lines of credit | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	1,007	373
Home equity lines of credit | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	493	801
Home equity lines of credit | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	1,849	2,289
Home equity lines of credit | Loans Receivable Not Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	256,002	248,534
Residential Mortgages secured by first liens
Financing Receivable, Past Due [Line Items]
Loans receivable	1,746,877	1,763,071
Residential Mortgages secured by first liens | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	13,968	13,304
Residential Mortgages secured by first liens | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	3,758	8,450
Residential Mortgages secured by first liens | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	6,272	7,935
Residential Mortgages secured by first liens | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	23,998	29,689
Residential Mortgages secured by first liens | Loans Receivable Not Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	1,722,879	1,733,382
Residential Mortgages secured by junior liens
Financing Receivable, Past Due [Line Items]
Loans receivable	132,593	140,790
Residential Mortgages secured by junior liens | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	298	281
Residential Mortgages secured by junior liens | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	48	538
Residential Mortgages secured by junior liens | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	180	198
Residential Mortgages secured by junior liens | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	526	1,017
Residential Mortgages secured by junior liens | Loans Receivable Not Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	132,067	139,773
Other revolving credit plans
Financing Receivable, Past Due [Line Items]
Loans receivable	51,529	48,953
Other revolving credit plans | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	13	78
Other revolving credit plans | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	10	34
Other revolving credit plans | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	37	21
Other revolving credit plans | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	60	133
Other revolving credit plans | Loans Receivable Not Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	51,469	48,820
Automobile
Financing Receivable, Past Due [Line Items]
Loans receivable	16,784	17,037
Automobile | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	120	217
Automobile | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	115	19
Automobile | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	58	23
Automobile | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	293	259
Automobile | Loans Receivable Not Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	16,491	16,778
Other consumer
Financing Receivable, Past Due [Line Items]
Loans receivable	49,092	51,474
Other consumer | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	459	426
Other consumer | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	345	319
Other consumer | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	299	329
Other consumer | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	1,103	1,074
Other consumer | Loans Receivable Not Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	47,989	50,400
Credit cards
Financing Receivable, Past Due [Line Items]
Loans receivable	14,315	13,276
Credit cards | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	73	139
Credit cards | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	48	67
Credit cards | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	105	42
Credit cards | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	226	248
Credit cards | Loans Receivable Not Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	14,089	13,028
Overdrafts
Financing Receivable, Past Due [Line Items]
Loans receivable	227	370
Overdrafts | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Overdrafts | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Overdrafts | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Overdrafts | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Overdrafts | Loans Receivable Not Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	$ 227	$ 370