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Loans and Allowance for Credit Losses on Loans -Loan modification (Details)
3 Months Ended 9 Months Ended
Sep. 30, 2024
USD ($)
loan
Sep. 30, 2023
USD ($)
Sep. 30, 2024
USD ($)
loan
Sep. 30, 2023
USD ($)
Financing Receivable, Modifications [Line Items]        
Number of loans for which multiple concessions are provided | loan 1   1  
Payment delay $ 0      
Payment default for loans modified $ 0 $ 0 $ 0 $ 0
Commercial. | Commercial | Payment Delay        
Financing Receivable, Modifications [Line Items]        
Payment delay   $ 25,000   $ 79,000
Class of financing receivables (as percentage)   0.01%    
Commercial. | Commercial | Term Extension        
Financing Receivable, Modifications [Line Items]        
Payment delay     $ 15,000  
Class of financing receivables (as percentage)     0.00%  
Weighted average term extension     12 months 14 months
Commercial. | Commercial | Extension and interest rate reduction        
Financing Receivable, Modifications [Line Items]        
Payment delay       $ 2,000
Class of financing receivables (as percentage)       0.02%
Commercial. | Commercial | Principal Forgiveness        
Financing Receivable, Modifications [Line Items]        
Payment delay       $ 3,000
Commercial. | Commercial | Contractual Interest Rate Reduction        
Financing Receivable, Modifications [Line Items]        
Principal forgiveness       0.25%