v3.26.1
Investment Securities - Summary of Securities Available For Sale By Contractual Maturity (Detail) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Available For Sale Securities Amortized Cost and Debt Maturities Fair Value [Line Items]    
Amortized cost $ 268,978 $ 189,924
Fair value due in one year or less 87,462 24,488
Fair value due after one year through five years 58,461 66,250
Fair value 261,491 182,569
Prepayment of Obligation [Member]    
Available For Sale Securities Amortized Cost and Debt Maturities Fair Value [Line Items]    
Amortized cost due in one year or less 3,975  
Amortized cost due after one year through five years 9,935  
Amortized cost due after five years through ten years 40,160  
Amortized cost due after ten years 1,053  
Amortized cost 268,978  
Fair value due in one year or less 3,964  
Fair value due after one year through five years 9,807  
Fair value due after five years through ten years 37,201  
Fair value due after ten years 948  
Fair value 261,491  
Mortgage-backed securities - U.S. Government Sponsored Enterprises (GSEs) [Member]    
Available For Sale Securities Amortized Cost and Debt Maturities Fair Value [Line Items]    
Amortized cost 213,855 132,040
Fair value due in one year or less 72,023 22,206
Fair value due after one year through five years 27,828 29,492
Fair value $ 209,571 $ 127,647