XML 51 R39.htm IDEA: XBRL DOCUMENT v3.25.3
INVESTMENT SECURITIES - Amortized Cost and Estimated Fair Value of Debt Securities by Contractual Maturity (Details) - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Held-to-Maturity, Amortized Cost    
Due in one year or less $ 0  
Due after one through five years 0  
Due after five years through ten years 575,740  
Due after ten years 585,238  
Subtotal 1,160,978  
Total - Amortized Cost 1,442,308 $ 1,345,155
Held-to-Maturity, Fair Value    
Due in one year or less 0  
Due after one through five years 0  
Due after five years through ten years 562,180  
Due after ten years 515,166  
Subtotal 1,077,346  
Fair Value 1,360,889 1,220,168
Available-for-Sale, Amortized Cost    
Due in one year or less 18,051  
Due after one through five years 1,950,886  
Due after five years through ten years 438,342  
Due after ten years 413,100  
Subtotal 2,820,379  
Amortized Cost 3,157,610 3,192,392
Available-for-Sale, Fair Value    
Due in one year or less 17,938  
Due after one through five years 1,852,880  
Due after five years through ten years 381,405  
Due after ten years 316,003  
Subtotal 2,568,226  
Fair Value 2,859,312 2,785,714
Government agency mortgage-backed securities    
Held-to-Maturity, Amortized Cost    
Total - Amortized Cost 281,330 206,412
Held-to-Maturity, Fair Value    
Fair Value 283,543 204,619
Available-for-Sale, Amortized Cost    
Amortized Cost 332,181 360,102
Available-for-Sale, Fair Value    
Fair Value 286,249 301,224
Government agency collateralized mortgage obligations    
Held-to-Maturity, Amortized Cost    
Total - Amortized Cost 0  
Held-to-Maturity, Fair Value    
Fair Value 0  
Available-for-Sale, Amortized Cost    
Amortized Cost 5,050 6,878
Available-for-Sale, Fair Value    
Fair Value $ 4,837 $ 6,512