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LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES - Risk Rating (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 4,301,297	$ 4,275,178
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total	2,864,620	2,872,117
Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total	52,647	48,583
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total	51,484	41,508
Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total	1,286	1,313
Farmland
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	2,521	12,321
One fiscal year before current year	12,052	7,982
Two fiscal years before current year	7,853	1,536
Three fiscal years before current year	1,531	871
Four fiscal years before current year	864	3,419
More than four fiscal years before current year	8,813	5,496
Revolving Loans Amortized Cost Basis	446	543
Revolving Loans Converted to Term	0	0
Total	34,080	32,168
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term	0
Total	0
Farmland | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	2,521	12,321
One fiscal year before current year	12,052	7,635
Two fiscal years before current year	7,506	1,536
Three fiscal years before current year	1,531	871
Four fiscal years before current year	864	3,277
More than four fiscal years before current year	6,719	3,523
Revolving Loans Amortized Cost Basis	446	543
Revolving Loans Converted to Term	0	0
Total	31,639	29,706
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	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	1,441	1,450
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	1,441	1,450
Farmland | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One fiscal year before current year	0	347
Two fiscal years before current year	347	0
Three fiscal years before current year	0	0
Four fiscal years before current year	0	142
More than four fiscal years before current year	653	523
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	1,000	1,012
Farmland | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Owner-occupied, nonfarm nonresidential properties
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	25,539	120,103
One fiscal year before current year	119,390	113,575
Two fiscal years before current year	112,643	66,194
Three fiscal years before current year	62,606	57,776
Four fiscal years before current year	56,467	30,286
More than four fiscal years before current year	91,107	65,773
Revolving Loans Amortized Cost Basis	10,713	14,786
Revolving Loans Converted to Term	0	0
Total	478,465	468,493
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	26
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term	0
Total	26
Owner-occupied, nonfarm nonresidential properties | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	25,539	116,701
One fiscal year before current year	115,564	113,575
Two fiscal years before current year	112,643	50,226
Three fiscal years before current year	47,101	55,040
Four fiscal years before current year	53,801	25,327
More than four fiscal years before current year	81,445	60,810
Revolving Loans Amortized Cost Basis	7,634	11,788
Revolving Loans Converted to Term	0	0
Total	443,727	433,467
Owner-occupied, nonfarm nonresidential properties | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	3,402
One fiscal year before current year	3,826	0
Two fiscal years before current year	0	15,613
Three fiscal years before current year	15,165	872
Four fiscal years before current year	863	4,097
More than four fiscal years before current year	4,785	814
Revolving Loans Amortized Cost Basis	3,079	2,998
Revolving Loans Converted to Term	0	0
Total	27,718	27,796
Owner-occupied, nonfarm nonresidential properties | 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	355
Three fiscal years before current year	340	1,864
Four fiscal years before current year	1,803	862
More than four fiscal years before current year	4,877	4,149
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	7,020	7,230
Owner-occupied, nonfarm nonresidential properties | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Agricultural production and other loans to farmers
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	105
One fiscal year before current year	47	140
Two fiscal years before current year	134	80
Three fiscal years before current year	77	42
Four fiscal years before current year	37	179
More than four fiscal years before current year	176	0
Revolving Loans Amortized Cost Basis	586	652
Revolving Loans Converted to Term	0	0
Total	1,057	1,198
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term	0
Total	0
Agricultural production and other loans to farmers | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	105
One fiscal year before current year	47	140
Two fiscal years before current year	134	80
Three fiscal years before current year	77	42
Four fiscal years before current year	37	179
More than four fiscal years before current year	176	0
Revolving Loans Amortized Cost Basis	586	652
Revolving Loans Converted to Term	0	0
Total	1,057	1,198
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
Agricultural production and other loans to farmers | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Commercial and Industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	32,586	196,495
One fiscal year before current year	169,062	216,555
Two fiscal years before current year	202,090	59,075
Three fiscal years before current year	54,345	17,382
Four fiscal years before current year	14,683	9,456
More than four fiscal years before current year	22,773	20,074
Revolving Loans Amortized Cost Basis	257,898	272,874
Revolving Loans Converted to Term	0	0
Total	753,437	791,911
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving Loans Amortized Cost Basis	46
Revolving Loans Converted to Term	0
Total	46
Commercial and Industrial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	32,586	195,955
One fiscal year before current year	161,387	213,433
Two fiscal years before current year	195,788	51,695
Three fiscal years before current year	47,017	16,730
Four fiscal years before current year	14,068	9,051
More than four fiscal years before current year	21,422	19,116
Revolving Loans Amortized Cost Basis	241,779	259,841
Revolving Loans Converted to Term	0	0
Total	714,047	765,821
Commercial and Industrial | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	241
One fiscal year before current year	418	0
Two fiscal years before current year	425	6,691
Three fiscal years before current year	6,666	273
Four fiscal years before current year	248	81
More than four fiscal years before current year	33	45
Revolving Loans Amortized Cost Basis	10,716	7,409
Revolving Loans Converted to Term	0	0
Total	18,506	14,740
Commercial and Industrial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	299
One fiscal year before current year	7,257	1,809
Two fiscal years before current year	4,591	689
Three fiscal years before current year	662	379
Four fiscal years before current year	367	324
More than four fiscal years before current year	1,318	913
Revolving Loans Amortized Cost Basis	5,403	5,624
Revolving Loans Converted to Term	0	0
Total	19,598	10,037
Commercial and Industrial | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One fiscal year before current year	0	1,313
Two fiscal years before current year	1,286	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	1,286	1,313
Obligations (other than securities and leases) of states and political subdivisions
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	4,367	20,840
One fiscal year before current year	18,004	37,527
Two fiscal years before current year	32,739	13,868
Three fiscal years before current year	12,923	4,584
Four fiscal years before current year	4,522	13,518
More than four fiscal years before current year	61,993	50,050
Revolving Loans Amortized Cost Basis	4,349	4,958
Revolving Loans Converted to Term	0	0
Total	138,897	145,345
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term	0
Total	0
Obligations (other than securities and leases) of states and political subdivisions | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	4,367	20,840
One fiscal year before current year	18,004	37,527
Two fiscal years before current year	32,739	13,868
Three fiscal years before current year	12,923	4,584
Four fiscal years before current year	4,522	13,518
More than four fiscal years before current year	61,993	50,050
Revolving Loans Amortized Cost Basis	4,349	4,958
Revolving Loans Converted to Term	0	0
Total	138,897	145,345
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	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 | 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
Obligations (other than securities and leases) of states and political subdivisions | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Other loans
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	53	14,248
One fiscal year before current year	12,358	5,358
Two fiscal years before current year	5,342	2,278
Three fiscal years before current year	2,165	363
Four fiscal years before current year	349	0
More than four fiscal years before current year	0	0
Revolving Loans Amortized Cost Basis	2,073	2,463
Revolving Loans Converted to Term	0	0
Total	22,340	24,710
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term	0
Total	0
Other loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	53	14,248
One fiscal year before current year	12,358	5,358
Two fiscal years before current year	5,342	2,278
Three fiscal years before current year	2,165	363
Four fiscal years before current year	349	0
More than four fiscal years before current year	0	0
Revolving Loans Amortized Cost Basis	2,073	2,463
Revolving Loans Converted to Term	0	0
Total	22,340	24,710
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 loans | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Other construction loans and all land development and other land loans
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	28,853	273,414
One fiscal year before current year	246,759	88,917
Two fiscal years before current year	84,942	56,782
Three fiscal years before current year	53,929	6,918
Four fiscal years before current year	8,276	8,644
More than four fiscal years before current year	1,620	916
Revolving Loans Amortized Cost Basis	10,862	11,094
Revolving Loans Converted to Term	0	0
Total	435,241	446,685
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term	0
Total	0
Other construction loans and all land development and other land loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	28,853	272,118
One fiscal year before current year	243,719	86,894
Two fiscal years before current year	84,462	56,782
Three fiscal years before current year	53,929	6,918
Four fiscal years before current year	6,738	8,644
More than four fiscal years before current year	1,620	916
Revolving Loans Amortized Cost Basis	10,797	11,028
Revolving Loans Converted to Term	0	0
Total	430,118	443,300
Other construction loans and all land development and other land loans | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	1,296
One fiscal year before current year	3,040	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	3,040	1,296
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	2,023
Two fiscal years before current year	480	0
Three fiscal years before current year	0	0
Four fiscal years before current year	1,538	0
More than four fiscal years before current year	0	0
Revolving Loans Amortized Cost Basis	65	66
Revolving Loans Converted to Term	0	0
Total	2,083	2,089
Other construction loans and all land development and other land loans | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Multifamily (5 or more) residential properties
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	9,491	115,097
One fiscal year before current year	117,438	49,794
Two fiscal years before current year	47,242	46,784
Three fiscal years before current year	46,246	11,854
Four fiscal years before current year	11,454	7,097
More than four fiscal years before current year	30,902	24,441
Revolving Loans Amortized Cost Basis	2,261	2,629
Revolving Loans Converted to Term	0	0
Total	265,034	257,696
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	65
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term	0
Total	65
Multifamily (5 or more) residential properties | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	9,491	114,454
One fiscal year before current year	116,809	49,794
Two fiscal years before current year	47,242	46,784
Three fiscal years before current year	46,246	11,854
Four fiscal years before current year	11,454	6,764
More than four fiscal years before current year	30,054	23,841
Revolving Loans Amortized Cost Basis	2,261	2,629
Revolving Loans Converted to Term	0	0
Total	263,557	256,120
Multifamily (5 or more) residential 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	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	510
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	0	510
Multifamily (5 or more) residential properties | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	643
One fiscal year before current year	629	0
Two fiscal years before current year	0	0
Three fiscal years before current year	0	0
Four fiscal years before current year	0	333
More than four fiscal years before current year	848	90
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	1,477	1,066
Multifamily (5 or more) residential properties | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Non-owner occupied, nonfarm nonresidential properties
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	82,060	341,378
One fiscal year before current year	330,647	154,901
Two fiscal years before current year	152,125	51,709
Three fiscal years before current year	50,011	70,955
Four fiscal years before current year	61,363	47,023
More than four fiscal years before current year	157,343	118,643
Revolving Loans Amortized Cost Basis	7,937	10,706
Revolving Loans Converted to Term	0	0
Total	841,486	795,315
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term	0
Total	0
Non-owner occupied, nonfarm nonresidential properties | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	82,060	339,151
One fiscal year before current year	328,110	153,613
Two fiscal years before current year	150,844	51,709
Three fiscal years before current year	50,011	66,592
Four fiscal years before current year	57,170	45,211
More than four fiscal years before current year	145,602	107,988
Revolving Loans Amortized Cost Basis	5,441	8,186
Revolving Loans Converted to Term	0	0
Total	819,238	772,450
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	355	488
Two fiscal years before current year	0	0
Three fiscal years before current year	0	273
Four fiscal years before current year	159	498
More than four fiscal years before current year	986	1,068
Revolving Loans Amortized Cost Basis	442	464
Revolving Loans Converted to Term	0	0
Total	1,942	2,791
Non-owner occupied, nonfarm nonresidential properties | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	2,227
One fiscal year before current year	2,182	800
Two fiscal years before current year	1,281	0
Three fiscal years before current year	0	4,090
Four fiscal years before current year	4,034	1,314
More than four fiscal years before current year	10,755	9,587
Revolving Loans Amortized Cost Basis	2,054	2,056
Revolving Loans Converted to Term	0	0
Total	20,306	20,074
Non-owner occupied, nonfarm nonresidential properties | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 0	$ 0

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Financing Receivable, Revolving Loans Amortized Cost Basis, Writeoff

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Financing Receivable, Year Five, Originated, Four Years Before Current Fiscal Year, Writeoff

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Financing Receivable, Year Four, Originated, Three Years Before Current Fiscal Year, Writeoff

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Financing Receivable, Year Three, Originated, Two Years Before Current Fiscal Year, Writeoff

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- Definition

Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919230-210447

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 3B
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL120267963-210447

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