SUBORDINATED DEFERRABLE INTEREST DEBENTURES - Schedule of Subordinated Deferrable Interest Debentures (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($)
Securities Financing Transaction [Line Items]
Issuance Amount	$ 154,390
Unaccreted Purchase Discount	24,075
Carrying Value	$ 130,315
Prosperity Bank Statutory Trust II
Securities Financing Transaction [Line Items]
Trust preferred securities, variable basis spread (as a percent)	3.15%
Trust preferred securities interest rate (as a percent)	8.77%
Issuance Amount	$ 4,640
Unaccreted Purchase Discount	732
Carrying Value	$ 3,908
Fidelity Southern Statutory Trust I
Securities Financing Transaction [Line Items]
Trust preferred securities, variable basis spread (as a percent)	3.10%
Trust preferred securities interest rate (as a percent)	8.72%
Issuance Amount	$ 15,464
Unaccreted Purchase Discount	933
Carrying Value	$ 14,531
Coastal Bankshares Statutory Trust I
Securities Financing Transaction [Line Items]
Trust preferred securities, variable basis spread (as a percent)	3.15%
Trust preferred securities interest rate (as a percent)	8.81%
Issuance Amount	$ 5,155
Unaccreted Purchase Discount	755
Carrying Value	$ 4,400
Jacksonville Statutory Trust I
Securities Financing Transaction [Line Items]
Trust preferred securities, variable basis spread (as a percent)	2.63%
Trust preferred securities interest rate (as a percent)	8.27%
Issuance Amount	$ 4,124
Unaccreted Purchase Discount	630
Carrying Value	$ 3,494
Prosperity Banking Capital Trust I
Securities Financing Transaction [Line Items]
Trust preferred securities, variable basis spread (as a percent)	2.57%
Trust preferred securities interest rate (as a percent)	8.16%
Issuance Amount	$ 5,155
Unaccreted Purchase Discount	1,074
Carrying Value	$ 4,081
Merchants & Southern Statutory Trust I
Securities Financing Transaction [Line Items]
Trust preferred securities, variable basis spread (as a percent)	1.90%
Trust preferred securities interest rate (as a percent)	7.54%
Issuance Amount	$ 3,093
Unaccreted Purchase Discount	710
Carrying Value	$ 2,383
Fidelity Southern Statutory Trust II
Securities Financing Transaction [Line Items]
Trust preferred securities, variable basis spread (as a percent)	1.89%
Trust preferred securities interest rate (as a percent)	7.53%
Issuance Amount	$ 10,310
Unaccreted Purchase Discount	1,616
Carrying Value	$ 8,694
Atlantic BancGroup, Inc. Statutory Trust I
Securities Financing Transaction [Line Items]
Trust preferred securities, variable basis spread (as a percent)	1.50%
Trust preferred securities interest rate (as a percent)	7.15%
Issuance Amount	$ 3,093
Unaccreted Purchase Discount	906
Carrying Value	$ 2,187
Coastal Bankshares Statutory Trust II
Securities Financing Transaction [Line Items]
Trust preferred securities, variable basis spread (as a percent)	1.60%
Trust preferred securities interest rate (as a percent)	7.25%
Issuance Amount	$ 10,310
Unaccreted Purchase Discount	2,739
Carrying Value	$ 7,571
Cherokee Statutory Trust I
Securities Financing Transaction [Line Items]
Trust preferred securities, variable basis spread (as a percent)	1.50%
Trust preferred securities interest rate (as a percent)	7.15%
Issuance Amount	$ 3,093
Unaccreted Purchase Discount	548
Carrying Value	$ 2,545
Prosperity Bank Statutory Trust III
Securities Financing Transaction [Line Items]
Trust preferred securities, variable basis spread (as a percent)	1.60%
Trust preferred securities interest rate (as a percent)	7.25%
Issuance Amount	$ 10,310
Unaccreted Purchase Discount	3,057
Carrying Value	$ 7,253
Merchants & Southern Statutory Trust II
Securities Financing Transaction [Line Items]
Trust preferred securities, variable basis spread (as a percent)	1.50%
Trust preferred securities interest rate (as a percent)	7.15%
Issuance Amount	$ 3,093
Unaccreted Purchase Discount	840
Carrying Value	$ 2,253
Jacksonville Statutory Trust II
Securities Financing Transaction [Line Items]
Trust preferred securities, variable basis spread (as a percent)	1.73%
Trust preferred securities interest rate (as a percent)	7.38%
Issuance Amount	$ 3,093
Unaccreted Purchase Discount	758
Carrying Value	$ 2,335
Ameris Statutory Trust I
Securities Financing Transaction [Line Items]
Trust preferred securities, variable basis spread (as a percent)	1.63%
Trust preferred securities interest rate (as a percent)	7.28%
Issuance Amount	$ 37,114
Unaccreted Purchase Discount	0
Carrying Value	$ 37,114
Fidelity Southern Statutory Trust III
Securities Financing Transaction [Line Items]
Trust preferred securities, variable basis spread (as a percent)	1.40%
Trust preferred securities interest rate (as a percent)	7.05%
Issuance Amount	$ 20,619
Unaccreted Purchase Discount	4,549
Carrying Value	$ 16,070
Prosperity Bank Statutory Trust IV
Securities Financing Transaction [Line Items]
Trust preferred securities, variable basis spread (as a percent)	1.54%
Trust preferred securities interest rate (as a percent)	7.19%
Issuance Amount	$ 7,940
Unaccreted Purchase Discount	3,403
Carrying Value	$ 4,537
Jacksonville Bancorp, Inc. Statutory Trust III
Securities Financing Transaction [Line Items]
Trust preferred securities, variable basis spread (as a percent)	3.75%
Trust preferred securities interest rate (as a percent)	9.40%
Issuance Amount	$ 7,784
Unaccreted Purchase Discount	825
Carrying Value	$ 6,959