SUBORDINATED DEFERRABLE INTEREST DEBENTURES - Subordinated Deferrable Interest Debentures (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($)
Securities Financing Transaction [Line Items]
Issuance Amount	$ 154,390
Unaccreted Purchase Discount	26,068
Carrying Value	$ 128,322
Prosperity Bank Statutory Trust II
Securities Financing Transaction [Line Items]
Trust preferred securities, variable basis spread	3.15%
Trust preferred securities interest rate	7.87%
Issuance Amount	$ 4,640
Unaccreted Purchase Discount	811
Carrying Value	$ 3,829
Fidelity Southern Statutory Trust I
Securities Financing Transaction [Line Items]
Trust preferred securities, variable basis spread	3.10%
Trust preferred securities interest rate	7.82%
Issuance Amount	$ 15,464
Unaccreted Purchase Discount	1,031
Carrying Value	$ 14,433
Coastal Bankshares Statutory Trust I
Securities Financing Transaction [Line Items]
Trust preferred securities, variable basis spread	3.15%
Trust preferred securities interest rate	7.23%
Issuance Amount	$ 5,155
Unaccreted Purchase Discount	832
Carrying Value	$ 4,323
Jacksonville Statutory Trust I
Securities Financing Transaction [Line Items]
Trust preferred securities, variable basis spread	2.63%
Trust preferred securities interest rate	7.37%
Issuance Amount	$ 4,124
Unaccreted Purchase Discount	691
Carrying Value	$ 3,433
Prosperity Banking Capital Trust I
Securities Financing Transaction [Line Items]
Trust preferred securities, variable basis spread	2.57%
Trust preferred securities interest rate	6.24%
Issuance Amount	$ 5,155
Unaccreted Purchase Discount	1,177
Carrying Value	$ 3,978
Merchants & Southern Statutory Trust I
Securities Financing Transaction [Line Items]
Trust preferred securities, variable basis spread	1.90%
Trust preferred securities interest rate	6.64%
Issuance Amount	$ 3,093
Unaccreted Purchase Discount	773
Carrying Value	$ 2,320
Fidelity Southern Statutory Trust II
Securities Financing Transaction [Line Items]
Trust preferred securities, variable basis spread	1.89%
Trust preferred securities interest rate	6.63%
Issuance Amount	$ 10,310
Unaccreted Purchase Discount	1,759
Carrying Value	$ 8,551
Atlantic BancGroup, Inc. Statutory Trust I
Securities Financing Transaction [Line Items]
Trust preferred securities, variable basis spread	1.50%
Trust preferred securities interest rate	6.27%
Issuance Amount	$ 3,093
Unaccreted Purchase Discount	983
Carrying Value	$ 2,110
Coastal Bankshares Statutory Trust II
Securities Financing Transaction [Line Items]
Trust preferred securities, variable basis spread	1.60%
Trust preferred securities interest rate	6.37%
Issuance Amount	$ 10,310
Unaccreted Purchase Discount	2,969
Carrying Value	$ 7,341
Cherokee Statutory Trust I
Securities Financing Transaction [Line Items]
Trust preferred securities, variable basis spread	1.50%
Trust preferred securities interest rate	6.27%
Issuance Amount	$ 3,093
Unaccreted Purchase Discount	594
Carrying Value	$ 2,499
Prosperity Bank Statutory Trust III
Securities Financing Transaction [Line Items]
Trust preferred securities, variable basis spread	1.60%
Trust preferred securities interest rate	6.37%
Issuance Amount	$ 10,310
Unaccreted Purchase Discount	3,310
Carrying Value	$ 7,000
Merchants & Southern Statutory Trust II
Securities Financing Transaction [Line Items]
Trust preferred securities, variable basis spread	1.50%
Trust preferred securities interest rate	6.27%
Issuance Amount	$ 3,093
Unaccreted Purchase Discount	909
Carrying Value	$ 2,184
Jacksonville Statutory Trust II
Securities Financing Transaction [Line Items]
Trust preferred securities, variable basis spread	1.73%
Trust preferred securities interest rate	6.50%
Issuance Amount	$ 3,093
Unaccreted Purchase Discount	817
Carrying Value	$ 2,276
Ameris Statutory Trust I
Securities Financing Transaction [Line Items]
Trust preferred securities, variable basis spread	1.63%
Trust preferred securities interest rate	6.40%
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	1.40%
Trust preferred securities interest rate	6.17%
Issuance Amount	$ 20,619
Unaccreted Purchase Discount	4,880
Carrying Value	$ 15,739
Prosperity Bank Statutory Trust IV
Securities Financing Transaction [Line Items]
Trust preferred securities, variable basis spread	1.54%
Trust preferred securities interest rate	6.31%
Issuance Amount	$ 7,940
Unaccreted Purchase Discount	3,650
Carrying Value	$ 4,290
Jacksonville Bancorp, Inc. Statutory Trust III
Securities Financing Transaction [Line Items]
Trust preferred securities, variable basis spread	3.75%
Trust preferred securities interest rate	8.52%
Issuance Amount	$ 7,784
Unaccreted Purchase Discount	882
Carrying Value	$ 6,902