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Commitments and Contingent Liabilities - Financial Instruments with Off-Balance Sheet Risk (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Financial instruments with off-balance sheet risk    
Contract amount $ 6,000,000 $ 6,500,000
Commitments to extend credit    
Financial instruments with off-balance sheet risk    
Contract amount 5,789,600 6,308,343
Standby letters of credit    
Financial instruments with off-balance sheet risk    
Contract amount 230,379 234,102
Commercial letters of credit    
Financial instruments with off-balance sheet risk    
Contract amount $ 6,460 $ 3,629