v3.24.3
Investment Securities - Schedule of Amortized Cost and Estimated Fair Value of Securities (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Amortized Cost    
Amortized Cost $ 3,614,342 $ 3,572,482
Fair Value    
Fair Value 3,518,662 3,225,892
Fair Value    
Fair Value 727,743 $ 763,844
Available-for-sale    
Amortized Cost    
Due within one year 58,784  
Due after one year through five years 219,416  
Due after five years through ten years 13,774  
Due after ten years 3,322,368  
Amortized Cost 3,614,342  
Fair Value    
Due within one year 58,315  
Due after one year through five years 217,489  
Due after five years through ten years 13,001  
Due after ten years 3,229,857  
Fair Value 3,518,662  
Held-to-maturity    
Amortized Cost    
Due within one year 0  
Due after one year through five years 0  
Due after five years through ten years 0  
Due after ten years 812,432  
Amortized Cost 812,432  
Fair Value    
Due within one year 0  
Due after one year through five years 0  
Due after five years through ten years 0  
Due after ten years 727,743  
Fair Value $ 727,743