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Investment Securities - Schedule of Investments Classified by Contractual Maturity Date (Details) - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Amortized Cost    
Due in 1 year or less $ 2,000  
Due after 1 year but within 5 years 24,421  
Due after 5 years but within 10 years 37,500  
Due after 10 years 844  
Available-for-sale securities, amortized cost basis, Total 64,765  
Amortized Cost 439,853 $ 284,770
Fair Value    
Due in 1 year or less 1,968  
Due after 1 year but within 5 years 23,999  
Due after 5 years but within 10 years 35,109  
Due after 10 years 653  
Available-for-sale securities, fair value, Total 61,729  
Available-for-sale securities, fair value 427,352 260,477
Amortized Cost    
Due in 1 year or less 21,743  
Due after 1 year but within 5 years 144,471  
Due after 5 years but within 10 years 141,657  
Due after 10 years 12,637  
Held-to-maturity securities, amortized cost 320,508  
Amortized Cost 354,094 382,447
Fair Value    
Due in 1 year or less 21,595  
Due after 1 year but within 5 years 137,243  
Due after 5 years but within 10 years 126,560  
Due after 10 years 10,611  
Held-to-maturity securities, fair value 296,009  
Held-to-maturity, Fair Value 325,606 $ 340,648
Mortgage-backed securities    
Amortized Cost    
Mortgage-backed securities 375,088  
Fair Value    
Mortgage-backed securities 365,623  
Amortized Cost    
Mortgage-backed securities 33,586  
Fair Value    
Mortgage-backed securities $ 29,597