v3.26.1
Investment Securities - Summary of Securities with Gross Unrealized Losses (Detail) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Debt Securities, Available-for-sale [Line Items]    
Gross Unrealized Losses, Less than Twelve Months $ (265) $ (16)
Fair Value, Less than Twelve Months 10,558 3,442
Gross Unrealized Losses, Twelve Months and Over (4,791) (4,623)
Fair Value, Twelve Months and Over 43,607 41,513
Collateralized Mortgage-Backed Securities [Member]    
Debt Securities, Available-for-sale [Line Items]    
Gross Unrealized Losses, Less than Twelve Months (236) (13)
Fair Value, Less than Twelve Months 7,644 3,420
Gross Unrealized Losses, Twelve Months and Over (3,496) (3,368)
Fair Value, Twelve Months and Over 29,393 26,541
State and Municipalities [Member]    
Debt Securities, Available-for-sale [Line Items]    
Gross Unrealized Losses, Less than Twelve Months (29) (3)
Fair Value, Less than Twelve Months 2,914 22
Gross Unrealized Losses, Twelve Months and Over (1,286) (1,248)
Fair Value, Twelve Months and Over 14,086 14,840
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 (9) (7)
Fair Value, Twelve Months and Over $ 128 $ 132