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Derivative Financial Instruments - Summary of Outstanding Notional Balances and Fair Values of Outstanding Derivative Positions (Detail) - USD ($)
$ in Thousands
Mar. 31, 2025
Dec. 31, 2024
Mar. 31, 2024
IRLCs [Member]      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Outstanding Notional Balance $ 51,862 $ 28,584 $ 53,206
Asset Derivative Fair Value 603 238 803
Liability Derivative Fair Value 0 0 0
Forward Mortgage-Backed Securities Trades [Member]      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Outstanding Notional Balance 65,500 38,500 70,000
Asset Derivative Fair Value 0 84 0
Liability Derivative Fair Value $ 202 $ 0 $ 91