v3.26.1
Investments - Amortized Cost and Estimated Fair Value - Held-to-Maturity Securities (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Debt Securities, Held-to-Maturity, Fair Value to Amortized Cost, after Allowance for Credit Loss [Abstract]    
Amortized Cost $ 282,894 $ 290,826
Gross Unrecognized Gains 4,787 3,050
Gross Unrecognized Losses (8,933) (7,415)
Estimated Fair Value 278,748 286,461
Allowance for credit losses on held-to-maturity securities (14) (15)
U.S. government agencies    
Debt Securities, Held-to-Maturity, Fair Value to Amortized Cost, after Allowance for Credit Loss [Abstract]    
Amortized Cost 4,320 4,523
Gross Unrecognized Losses (462) (413)
Estimated Fair Value 3,858 4,110
Mortgage-backed securities    
Debt Securities, Held-to-Maturity, Fair Value to Amortized Cost, after Allowance for Credit Loss [Abstract]    
Amortized Cost 108,476 115,228
Gross Unrecognized Gains   20
Gross Unrecognized Losses (8,471) (7,002)
Estimated Fair Value 100,005 108,246
State and political subdivisions    
Debt Securities, Held-to-Maturity, Fair Value to Amortized Cost, after Allowance for Credit Loss [Abstract]    
Amortized Cost 170,098 171,075
Gross Unrecognized Gains 4,787 3,030
Estimated Fair Value 174,885 174,105
Allowance for credit losses on held-to-maturity securities $ (14) $ (15)