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Securities, AFS Debt Securities, Contractual Maturities (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Available-for-sale Securities, Debt Maturities, Amortized Cost [Abstract]    
Within one year $ 1,644  
From one to five years 253,118  
From five to ten years 741,574  
After ten years 782,153  
Amortized cost 1,778,489 $ 1,694,806
Available-for-sale Securities, Debt Maturities, Estimated Fair Value [Abstract]    
Within one year 1,636  
From one to five years 233,059  
From five to ten years 638,816  
After ten years 682,990  
Fair value $ 1,556,501 $ 1,687,361