Securities, AFS Debt Securities, Contractual Maturities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Available-for-sale Securities, Debt Maturities, Amortized Cost [Abstract]
Within one year	$ 682
From one to five years	402,807
From five to ten years	582,736
After ten years	757,657
Amortized cost	1,743,882	$ 1,694,806
Available-for-sale Securities, Debt Maturities, Estimated Fair Value [Abstract]
Within one year	675
From one to five years	361,295
From five to ten years	506,036
After ten years	659,219
Fair value	$ 1,527,225	$ 1,687,361