v3.25.4
Investment Securities - Schedule of Amortized Cost and Estimated Fair Value of Securities (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Amortized Cost    
Amortized Cost $ 3,998,939 $ 3,694,578
Fair Value    
Fair Value 3,951,455 3,524,686
Fair Value    
Fair Value 654,832 $ 678,174
Available-for-sale    
Amortized Cost    
Due within one year 0  
Due after one year through five years 0  
Due after five years through ten years 256,438  
Due after ten years 3,742,501  
Amortized Cost 3,998,939  
Fair Value    
Due within one year 0  
Due after one year through five years 0  
Due after five years through ten years 259,558  
Due after ten years 3,691,897  
Fair Value 3,951,455  
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 725,722  
Amortized Cost 725,722  
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 654,832  
Fair Value $ 654,832