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Investment Securities Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Schedule of Investments [Line Items]          
Debt Securities, Held-to-Maturity, Fair Value $ 1,285,350   $ 1,285,350   $ 1,183,449
Proceeds from sales of AFS investment securities     14,966 $ 2,300,487  
Debt securities, realized loss 0 $ 89 665 $ 20,462  
Collateral Pledged [Member]          
Schedule of Investments [Line Items]          
Securities pledged as collateral $ 343,800   $ 343,800   $ 325,200