v3.26.1
Securities Available-for-Sale - Schedule of amortized cost and fair values of securities available-for-sale by contractual maturity (Detail) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Debt Securities, Available-for-Sale [Line Items]    
Due in one year or less $ 0  
Due after one year through five years, Amortized Cost 4,043  
Due after five years through ten years, Amortized Cost 5,543  
Due after ten years, Amortized Cost 30,750  
Total U.S. Government-sponsored enterprises obligations, municipal bonds, corporate debt and corporate subordinated debt, Amortized Cost 40,336  
Mortgage-backed securities, Amortized Cost 140,404 $ 158,987
Due in one year or less, Fair value 0  
Due after one year through five years, Fair Value 3,909  
Due after five years through ten years, Fair Value 5,420  
Due after ten years, Fair Value 27,864  
Total U.S. Government-sponsored enterprises obligations, municipal bonds, corporate debt and corporate subordinated debt, Fair Value 37,193  
Mortgage-backed securities, Fair Value 133,783 152,406
U.S. Government agency small business administration pools guaranteed by the SBA [Member]    
Debt Securities, Available-for-Sale [Line Items]    
Mortgage-backed securities, Amortized Cost 9,799 [1] 11,272
Mortgage-backed securities, Fair Value 9,155 [1] 10,573
Collateralized mortgage obligations issued by the FHLMC, FNMA and GNMA [Member]    
Debt Securities, Available-for-Sale [Line Items]    
Mortgage-backed securities, Amortized Cost 29,446 [1] 34,765
Mortgage-backed securities, Fair Value 29,408 [1] 34,742
Residential mortgage backed securities [Member]    
Debt Securities, Available-for-Sale [Line Items]    
Mortgage-backed securities, Amortized Cost 60,823 [1] 66,725
Mortgage-backed securities, Fair Value $ 58,027 [1] $ 64,495
[1] Actual maturities for these debt securities are dependent upon the interest rate environment and prepayments on the underlying loans.