Quarterly report [Sections 13 or 15(d)]

LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES (Narrative) (Details)

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LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES (Narrative) (Details)
3 Months Ended 15 Months Ended
Mar. 31, 2025
USD ($)
segment
Mar. 31, 2024
USD ($)
Mar. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Nonaccrual loans, interest income $ 0 $ 0      
Loans under modified terms 2,171,000        
Amortized Cost 2,171,000        
Total Allowance for credit losses 193,796,000 136,190,000 $ 193,796,000 $ 178,644,000 $ 132,182,000
Held for sale loans moved to nonaccrual status 355,000 0      
Unfunded commitments on loans modified and designated as TLMs 0   0    
TLM loans that went into default 0 0      
TLMs that are past due $ 0 0      
Number of operating segments | segment 2        
Loans held for investment, accrued interest receivable $ 71,400,000   $ 71,400,000 73,700,000  
Financing Receivable Accrued Interest After Allowance For Credit Loss Statement Of Financial Position Extensible List Not Disclosed (Flag)     true    
Revolving loans converted to term     $ 0    
Commercial Portfolio Segment [Member]          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total Allowance for credit losses $ 162,908,000 110,528,000 $ 162,908,000 $ 148,887,000 $ 105,896,000
Troubled Loan Modifications          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Loans under modified terms   36,000      
Amortized Cost   $ 36,000