Quarterly report pursuant to Section 13 or 15(d)

LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES (Loans Stated at Face Amount, Net of Unearned Income) (Details)

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LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES (Loans Stated at Face Amount, Net of Unearned Income) (Details) - USD ($)
$ in Thousands
Mar. 31, 2024
Dec. 31, 2023
Mar. 31, 2023
Dec. 31, 2022
Loans and Leases Receivable Disclosure [Line Items]        
LHFI, net of deferred fees and costs $ 15,851,628 $ 15,635,043    
Total Allowance for credit losses (136,190) (132,182) $ (116,512) $ (110,768)
Total loans held for investment, net 15,715,438 15,502,861    
Loans receivable, deferred fees and costs 92,500 79,700    
Construction and Land Development        
Loans and Leases Receivable Disclosure [Line Items]        
LHFI, net of deferred fees and costs 1,246,251 1,107,850    
Commercial Real Estate - Owner Occupied        
Loans and Leases Receivable Disclosure [Line Items]        
LHFI, net of deferred fees and costs 1,981,613 1,998,787    
Commercial Real Estate - Non-Owner Occupied        
Loans and Leases Receivable Disclosure [Line Items]        
LHFI, net of deferred fees and costs 4,225,018 4,172,401    
Multifamily Real Estate        
Loans and Leases Receivable Disclosure [Line Items]        
LHFI, net of deferred fees and costs 1,074,957 1,061,997    
Commercial and Industrial        
Loans and Leases Receivable Disclosure [Line Items]        
LHFI, net of deferred fees and costs 3,561,971 3,589,347    
Residential 1-4 Family - Commercial        
Loans and Leases Receivable Disclosure [Line Items]        
LHFI, net of deferred fees and costs 515,667 522,580    
Residential 1-4 Family - Mortgage        
Loans and Leases Receivable Disclosure [Line Items]        
LHFI, net of deferred fees and costs 1,081,094 1,078,173    
Residential 1-4 Family - Revolving        
Loans and Leases Receivable Disclosure [Line Items]        
LHFI, net of deferred fees and costs 616,951 619,433    
Auto        
Loans and Leases Receivable Disclosure [Line Items]        
LHFI, net of deferred fees and costs 440,118 486,926    
Consumer        
Loans and Leases Receivable Disclosure [Line Items]        
LHFI, net of deferred fees and costs 113,414 120,641    
Other Commercial        
Loans and Leases Receivable Disclosure [Line Items]        
LHFI, net of deferred fees and costs $ 994,574 $ 876,908