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Securities & Allowance for Securities Credit Losses - Schedule of Amortized Cost and Fair Value of Investment Securities (Details) - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Amortized Cost    
Within one year $ 275,515  
After one year through five years 253,583  
After five years through ten years 16,740  
Over ten years 4,753  
Amortized Cost 550,591 $ 365,323
Fair Value    
Within one year 275,575  
After one year through five years 252,073  
After five years through ten years 15,740  
Over ten years 4,381  
Total 547,769 358,329 [1]
Amortized Cost    
Within one year 72,571  
After one year through five years 149,676  
After five years through ten years 57,410  
Over ten years 4,256  
Amortized Cost 283,913 300,653
Fair Value    
Within one year 71,977  
After one year through five years 143,270  
After five years through ten years 52,207  
Over ten years 3,685  
Total $ 271,139 $ 278,951
[1] Derived from audited consolidated financial statements.