LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES - Schedule of Credit Risk Profile By Risk Rating (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	$ 3,909,753	$ 3,634,792
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	2,634,150	2,424,318
Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	22,698	30,132
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	44,433	45,919
Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	1,356	1,379
Total Non-Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	68,487	77,430
Total
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	2,702,637	2,501,748
Farmland
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	31,649	23,768
Farmland | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	29,261	21,286
Farmland | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	1,450	1,514
Farmland | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	938	968
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	2,388	2,482
Farmland | Total
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	31,649	23,768
Owner-occupied, nonfarm nonresidential properties
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	463,922	434,672
Owner-occupied, nonfarm nonresidential properties | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	449,366	419,368
Owner-occupied, nonfarm nonresidential properties | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	6,406	6,723
Owner-occupied, nonfarm nonresidential properties | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	8,150	8,581
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	14,556	15,304
Owner-occupied, nonfarm nonresidential properties | Total
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	463,922	434,672
Agricultural production and other loans to farmers
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	1,097	1,379
Agricultural production and other loans to farmers | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	1,097	1,379
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	1,097	1,379
Commercial and Industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	759,417	708,989
Commercial and Industrial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	740,370	687,010
Commercial and Industrial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	6,554	7,946
Commercial and Industrial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	11,137	12,654
Commercial and Industrial | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	1,356	1,379
Commercial and Industrial | Total Non-Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	19,047	21,979
Commercial and Industrial | Total
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	759,417	708,989
Obligations (other than securities and leases) of states and political subdivisions | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable		140,887
Obligations (other than securities and leases) of states and political subdivisions | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable		0
Obligations (other than securities and leases) of states and political subdivisions | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable		0
Obligations (other than securities and leases) of states and political subdivisions | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable		0
Obligations (other than securities and leases) of states and political subdivisions | Total Non-Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	0	0
Obligations (other than securities and leases) of states and political subdivisions | Total
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	143,488	140,887
Other loans
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	14,524	13,979
Other loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	14,524	13,979
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	14,524	13,979
Other construction loans and all land development and other land loans
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	341,399	298,869
Other construction loans and all land development and other land loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	339,750	294,103
Other construction loans and all land development and other land loans | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	1,578	4,221
Other construction loans and all land development and other land loans | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	71	545
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	1,649	4,766
Other construction loans and all land development and other land loans | Total
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	341,399	298,869
Multifamily (5 or more) residential properties
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	212,561	216,143
Multifamily (5 or more) residential properties | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	211,353	214,772
Multifamily (5 or more) residential properties | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	100	100
Multifamily (5 or more) residential properties | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	1,108	1,271
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	1,208	1,371
Multifamily (5 or more) residential properties | Total
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	212,561	216,143
Non-owner occupied, nonfarm nonresidential properties
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	734,580	663,062
Non-owner occupied, nonfarm nonresidential properties | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	704,941	631,534
Non-owner occupied, nonfarm nonresidential properties | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	6,610	9,628
Non-owner occupied, nonfarm nonresidential properties | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	23,029	21,900
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	29,639	31,528
Non-owner occupied, nonfarm nonresidential properties | Total
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	734,580	663,062
Obligations (other than securities and leases) of states and political subdivisions
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	143,488	140,887
Obligations (other than securities and leases) of states and political subdivisions | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	143,488	140,887
Obligations (other than securities and leases) of states and political subdivisions | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	0	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