v3.25.4
Investment Securities - Summary of Securities with Gross Unrealized Losses (Detail) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Debt Securities, Available-for-sale [Line Items]    
Gross Unrealized Losses, Less than Twelve Months $ (16) $ (375)
Fair Value, Less than Twelve Months 3,442 10,307
Gross Unrealized Losses, Twelve Months and Over (4,623) (5,958)
Fair Value, Twelve Months and Over 41,513 39,724
Mortgage-backed securities    
Debt Securities, Available-for-sale [Line Items]    
Gross Unrealized Losses, Less than Twelve Months (13) (106)
Fair Value, Less than Twelve Months 3,420 5,423
Gross Unrealized Losses, Twelve Months and Over (3,368) (4,696)
Fair Value, Twelve Months and Over 26,541 29,619
State and Municipalities [Member]    
Debt Securities, Available-for-sale [Line Items]    
Gross Unrealized Losses, Less than Twelve Months (3) (269)
Fair Value, Less than Twelve Months 22 4,884
Gross Unrealized Losses, Twelve Months and Over (1,248) (1,247)
Fair Value, Twelve Months and Over 14,840 9,939
Agency Bonds [Member]    
Debt Securities, Available-for-sale [Line Items]    
Gross Unrealized Losses, Less than Twelve Months 0 0
Fair Value, Less than Twelve Months 0 0
Gross Unrealized Losses, Twelve Months and Over (7) (15)
Fair Value, Twelve Months and Over $ 132 $ 166