LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES - Schedule of Credit Risk Profile By Risk Rating (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	$ 4,492,174	$ 4,275,178
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	2,966,378	2,872,117
Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	73,079	48,583
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	54,019	41,508
Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	1,191	1,313
Total Non-Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	128,289	91,404
Total
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	3,094,667	2,963,521
Farmland
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	32,794	32,168
Farmland | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	31,683	29,706
Farmland | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	182	1,450
Farmland | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	929	1,012
Farmland | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	0	0
Farmland | Total Non-Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	1,111	2,462
Farmland | Total
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	32,794	32,168
Owner-occupied, nonfarm nonresidential properties
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	494,526	468,493
Owner-occupied, nonfarm nonresidential properties | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	461,070	433,467
Owner-occupied, nonfarm nonresidential properties | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	21,846	27,796
Owner-occupied, nonfarm nonresidential properties | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	11,610	7,230
Owner-occupied, nonfarm nonresidential properties | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	0	0
Owner-occupied, nonfarm nonresidential properties | Total Non-Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	33,456	35,026
Owner-occupied, nonfarm nonresidential properties | Total
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	494,526	468,493
Agricultural production and other loans to farmers
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	1,118	1,198
Agricultural production and other loans to farmers | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	1,118	1,198
Agricultural production and other loans to farmers | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	0	0
Agricultural production and other loans to farmers | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	0	0
Agricultural production and other loans to farmers | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	0	0
Agricultural production and other loans to farmers | Total Non-Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	0	0
Agricultural production and other loans to farmers | Total
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	1,118	1,198
Commercial and Industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	730,542	791,911
Commercial and Industrial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	683,830	765,821
Commercial and Industrial | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	30,924	14,740
Commercial and Industrial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	14,597	10,037
Commercial and Industrial | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	1,191	1,313
Commercial and Industrial | Total Non-Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	46,712	26,090
Commercial and Industrial | Total
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	730,542	791,911
Obligations (other than securities and leases) of states and political subdivisions
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	153,722	145,345
Obligations (other than securities and leases) of states and political subdivisions | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	140,389	145,345
Obligations (other than securities and leases) of states and political subdivisions | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	13,333	0
Obligations (other than securities and leases) of states and political subdivisions | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	0	0
Obligations (other than securities and leases) of states and political subdivisions | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	0	0
Obligations (other than securities and leases) of states and political subdivisions | Total Non-Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	13,333	0
Obligations (other than securities and leases) of states and political subdivisions | Total
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	153,722	145,345
Other loans
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	43,082	24,710
Other loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	43,082	24,710
Other loans | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	0	0
Other loans | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	0	0
Other loans | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	0	0
Other loans | Total Non-Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	0	0
Other loans | Total
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	43,082	24,710
Other construction loans and all land development and other land loans
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	461,931	446,685
Other construction loans and all land development and other land loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	455,011	443,300
Other construction loans and all land development and other land loans | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	5,307	1,296
Other construction loans and all land development and other land loans | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	1,613	2,089
Other construction loans and all land development and other land loans | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	0	0
Other construction loans and all land development and other land loans | Total Non-Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	6,920	3,385
Other construction loans and all land development and other land loans | Total
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	461,931	446,685
Multifamily (5 or more) residential properties
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	268,432	257,696
Multifamily (5 or more) residential properties | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	267,632	256,120
Multifamily (5 or more) residential properties | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	0	510
Multifamily (5 or more) residential properties | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	800	1,066
Multifamily (5 or more) residential properties | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	0	0
Multifamily (5 or more) residential properties | Total Non-Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	800	1,576
Multifamily (5 or more) residential properties | Total
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	268,432	257,696
Non-owner occupied, nonfarm nonresidential properties
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	908,520	795,315
Non-owner occupied, nonfarm nonresidential properties | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	882,563	772,450
Non-owner occupied, nonfarm nonresidential properties | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	1,487	2,791
Non-owner occupied, nonfarm nonresidential properties | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	24,470	20,074
Non-owner occupied, nonfarm nonresidential properties | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	0	0
Non-owner occupied, nonfarm nonresidential properties | Total Non-Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	25,957	22,865
Non-owner occupied, nonfarm nonresidential properties | Total
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	$ 908,520	$ 795,315