Annual report [Section 13 and 15(d), not S-K Item 405]

Derivatives and Hedging Activities - Schedule of Fair Value of Derivative Financial Instruments as well as their Classification on Consolidated Balance Sheets (Detail)

v3.25.4
Derivatives and Hedging Activities - Schedule of Fair Value of Derivative Financial Instruments as well as their Classification on Consolidated Balance Sheets (Detail) - USD ($)
Dec. 31, 2025
Dec. 31, 2024
Derivatives Fair Value [Line Items]    
Total derivative assets $ 2,719,000 $ 4,690,000
Not Designated as Hedging Instrument    
Derivatives Fair Value [Line Items]    
Total derivative assets 2,579,000 4,690,000
Total derivative liabilities 2,568,000 4,650,000
Not Designated as Hedging Instrument | Interest Rate Products    
Derivatives Fair Value [Line Items]    
Notional Amount 61,350,000 101,892,000
Total derivative assets 2,579,000 4,690,000
Total derivative liabilities 2,568,000 4,650,000
Designated as Hedging Instrument    
Derivatives Fair Value [Line Items]    
Total derivative assets 140,000  
Total derivative liabilities   642,000
Designated as Hedging Instrument | Interest Rate Products    
Derivatives Fair Value [Line Items]    
Notional Amount 175,000,000 175,000,000
Total derivative assets $ 140,000  
Total derivative liabilities   $ 642,000