v3.26.1
Securities Held-to-Maturity - Age of unrealized losses and the fair value (Details) - security
Mar. 31, 2026
Dec. 31, 2025
Mortgage-backed securities    
Securities Held-to-Maturity    
Number of securities with unrealized loss 8 11
Municipal bonds    
Securities Held-to-Maturity    
Number of securities with no history of credit loss 10