XML 57 R45.htm IDEA: XBRL DOCUMENT v3.24.2.u1
Investment Securities - Amortized Cost and Estimated Fair Value of Debt Securities by Contractual Maturity (Detail) - USD ($)
$ in Thousands
Jun. 30, 2024
Dec. 31, 2023
Amortized Cost    
Due in one year $ 15,715  
Due after one year through five years 66,353  
Due after five years through ten years 263,947  
Due after ten years 1,838,437  
Amortized Cost 2,184,452 $ 2,384,325
Estimated Fair Value    
Due in one year 15,600  
Due after one year through five years 63,156  
Due after five years through ten years 252,757  
Due after ten years 1,609,270  
Totals 1,940,783 2,152,504
Amortized Cost    
Due in one year 0  
Due after one year through five years 4,981  
Due after five years through ten years 89,811  
Due after ten years 27,881  
Totals 122,673 133,494
Estimated Fair Value    
Due in one year 0  
Due after one year through five years 4,817  
Due after five years through ten years 83,494  
Due after ten years 25,398  
Totals $ 113,709 $ 125,126