LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES (Schedule of Stated at Face Amount, Net of Unearned Income) (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024	Mar. 31, 2024	Dec. 31, 2023
Loans and Leases Receivable Disclosure [Line Items]
LHFI, net of deferred fees and costs	$ 18,427,689	$ 18,470,621
Total Allowance for credit losses	(193,796)	(178,644)	$ (136,190)	$ (132,182)
Total loans held for investment, net	18,233,893	18,291,977
Loans receivable, deferred fees and costs	206,000	220,600
Construction and Land Development
Loans and Leases Receivable Disclosure [Line Items]
LHFI, net of deferred fees and costs	1,305,969	1,731,108
Commercial Real Estate ("CRE") - Owner Occupied
Loans and Leases Receivable Disclosure [Line Items]
LHFI, net of deferred fees and costs	2,363,509	2,370,119
CRE - Non-Owner Occupied
Loans and Leases Receivable Disclosure [Line Items]
LHFI, net of deferred fees and costs	5,072,694	4,935,590
Multifamily Real Estate
Loans and Leases Receivable Disclosure [Line Items]
LHFI, net of deferred fees and costs	1,531,547	1,240,209
Commercial and Industrial
Loans and Leases Receivable Disclosure [Line Items]
LHFI, net of deferred fees and costs	3,819,415	3,864,695
Residential 1-4 Family - Commercial
Loans and Leases Receivable Disclosure [Line Items]
LHFI, net of deferred fees and costs	738,388	719,425
Residential 1-4 Family - Mortgage
Loans and Leases Receivable Disclosure [Line Items]
LHFI, net of deferred fees and costs	1,286,526	1,293,817
Residential 1-4 Family - Revolving
Loans and Leases Receivable Disclosure [Line Items]
LHFI, net of deferred fees and costs	778,527	756,944
Automobile Loan [Member]
Loans and Leases Receivable Disclosure [Line Items]
LHFI, net of deferred fees and costs	279,517	316,368
Consumer
Loans and Leases Receivable Disclosure [Line Items]
LHFI, net of deferred fees and costs	101,334	104,882
Other Commercial
Loans and Leases Receivable Disclosure [Line Items]
LHFI, net of deferred fees and costs	$ 1,150,263	$ 1,137,464