v3.26.1
Investment Securities - Amortized Cost and Fair Value of Securities Held-to-Maturity (Details) - USD ($)
Jun. 30, 2026
Dec. 31, 2025
Marketable Securities [Line Items]    
Allowance for credit losses, held to maturity $ 20,000.0 $ 20,000.0
Securities held-to-maturity, amortized cost 2,135,000 2,190,000
Gross unrealized gains 0 0
Gross unrealized (losses) (208,000) (195,000)
Fair Value 1,927,000 1,995,000
Obligations of states and political subdivisions    
Marketable Securities [Line Items]    
Securities held-to-maturity, amortized cost 2,135,000 2,190,000
Gross unrealized gains 0 0
Gross unrealized (losses) (208,000) (195,000)
Fair Value $ 1,927,000 $ 1,995,000