Quarterly report pursuant to Section 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 6 Months Ended 12 Months Ended 18 Months Ended
Jun. 30, 2024
USD ($)
Jun. 30, 2023
USD ($)
Jun. 30, 2024
USD ($)
segment
Jun. 30, 2023
USD ($)
Dec. 31, 2023
USD ($)
Jun. 30, 2024
USD ($)
Mar. 31, 2024
USD ($)
Mar. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]                  
Nonaccrual loans, interest income     $ 0   $ 0        
Loans under modified terms $ 23,920,000 $ 11,539,000 24,096,000 $ 30,991,000 31,000,000.0        
Amortized Cost 23,920,000 11,539,000 24,096,000 30,991,000 31,000,000.0        
Total Allowance for credit losses 158,131,000 120,683,000 158,131,000 120,683,000 132,182,000 $ 158,131,000 $ 136,190,000 $ 116,512,000 $ 110,768,000
Held for sale loans moved to nonaccrual status     0 645,000          
Unfunded commitments on loans modified and designated as TLMs 0   0   1,600,000 0      
TLM loans that went into default           0      
TLMs that are past due     $ 0 0          
Number of operating segments | segment     2            
Loans held for investment, accrued interest receivable 81,200,000   $ 81,200,000   $ 72,500,000 81,200,000      
Financing Receivable Accrued Interest After Allowance For Credit Loss Statement Of Financial Position Extensible List Not Disclosed (Flag)     true   true        
Commercial Portfolio Segment [Member]                  
Accounts, Notes, Loans and Financing Receivable [Line Items]                  
Total Allowance for credit losses $ 131,139,000 $ 92,970,000 $ 131,139,000 $ 92,970,000 $ 105,896,000 $ 131,139,000 $ 110,528,000 $ 88,086,000 $ 82,753,000