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LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES (Schedule of Stated at Face Amount, Net of Unearned Income) (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Jun. 30, 2025	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Dec. 31, 2023
Loans and Leases Receivable Disclosure [Line Items]
LHFI, net of deferred fees and costs	$ 27,361,173		$ 18,470,621
Total Allowance for credit losses	(293,035)	$ (315,574)	(178,644)	$ (160,685)	$ (158,131)	$ (132,182)
Total loans held for investment, net	27,068,138		18,291,977
Loans receivable, deferred fees and costs	847,300		220,600
Construction and Land Development
Loans and Leases Receivable Disclosure [Line Items]
LHFI, net of deferred fees and costs	2,163,182		1,731,108
Commercial Real Estate ("CRE") - Owner Occupied
Loans and Leases Receivable Disclosure [Line Items]
LHFI, net of deferred fees and costs	4,335,919		2,370,119
CRE - Non-Owner Occupied
Loans and Leases Receivable Disclosure [Line Items]
LHFI, net of deferred fees and costs	6,805,302		4,935,590
Multifamily Real Estate
Loans and Leases Receivable Disclosure [Line Items]
LHFI, net of deferred fees and costs	2,196,467		1,240,209
Commercial and Industrial
Loans and Leases Receivable Disclosure [Line Items]
LHFI, net of deferred fees and costs	4,956,770		3,864,695
Residential 1-4 Family - Commercial
Loans and Leases Receivable Disclosure [Line Items]
LHFI, net of deferred fees and costs	1,105,067		719,425
Residential 1-4 Family - Mortgage
Loans and Leases Receivable Disclosure [Line Items]
LHFI, net of deferred fees and costs	2,799,669		1,293,817
Residential 1-4 Family - Revolving
Loans and Leases Receivable Disclosure [Line Items]
LHFI, net of deferred fees and costs	1,186,298		756,944
Automobile Loan [Member]
Loans and Leases Receivable Disclosure [Line Items]
LHFI, net of deferred fees and costs	211,900		316,368
Consumer
Loans and Leases Receivable Disclosure [Line Items]
LHFI, net of deferred fees and costs	121,620		104,882
Other Commercial
Loans and Leases Receivable Disclosure [Line Items]
LHFI, net of deferred fees and costs	$ 1,478,979		$ 1,137,464

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Amount excluding accrued interest, of allowance for credit loss on financing receivable and lease receivable if applicable.

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

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