LOANS HELD FOR INVESTMENT, NET - Collateral Dependent Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	$ 10,566,831	$ 9,244,661
Allowance for credit losses	83,507	83,853	$ 41,461	$ 28,441
Commercial real estate ("CRE")
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	4,457,630	3,945,948
Allowance for credit losses	27,329	29,166	9,059	3,900
Acquisition, development, and construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	229,663	322,628
Allowance for credit losses	1,723	4,857	1,993	1,244
Commercial and Industrial ("C&I") Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	1,071,712	933,559
Allowance for credit losses	39,853	35,331	12,737	12,870
Total real estate loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	9,487,440	8,294,204
Allowance for credit losses	43,381	47,771	$ 28,712	$ 15,555
Real Estate Collateral Dependent | Commercial real estate ("CRE")
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	7,391	3,837
Allowance for credit losses	1,297	600
Real Estate Collateral Dependent | Acquisition, development, and construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	657
Real Estate Collateral Dependent | Commercial and Industrial ("C&I") Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	949	348
Real Estate Collateral Dependent | Total real estate loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	8,997	4,185
Allowance for credit losses	$ 1,297	$ 600