Quarterly report pursuant to Section 13 or 15(d)

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

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Derivatives and Hedging Activities - Schedule of Fair Value of Derivative Financial Instruments as well as their Classification on Balance Sheet (Detail) - USD ($)
Sep. 30, 2024
Dec. 31, 2023
Derivatives Fair Value [Line Items]    
Total derivative assets $ 5,284,000 $ 6,245,000
Not Designated as Hedging Instrument    
Derivatives Fair Value [Line Items]    
Total derivative assets 4,559,000 5,939,000
Total derivative liabilities 4,559,000 5,920,000
Not Designated as Hedging Instrument | Interest Rate Products    
Derivatives Fair Value [Line Items]    
Notional Amount 102,569,000 104,571,000
Total derivative assets 4,559,000 5,939,000
Total derivative liabilities 4,559,000 5,920,000
Designated as Hedging Instrument    
Derivatives Fair Value [Line Items]    
Total derivative assets 725,000 306,000
Designated as Hedging Instrument | Interest Rate Products    
Derivatives Fair Value [Line Items]    
Notional Amount 175,000,000 100,000,000
Total derivative assets $ 725,000 $ 306,000