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Securities, AFS Debt Securities, Contractual Maturities (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Available-for-sale Securities, Debt Maturities, Amortized Cost [Abstract]
Within one year	$ 40,409
From one to five years	637,648
From five to ten years	244,195
After ten years	726,023
Amortized cost	1,648,275	$ 1,615,078
Available-for-sale Securities, Debt Maturities, Estimated Fair Value [Abstract]
Within one year	40,282
From one to five years	590,469
From five to ten years	224,850
After ten years	653,737
Fair value	$ 1,509,338	$ 1,430,858

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