Commitments and Letters of Credit - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Loss Contingencies [Line Items]
Notional amount of financial standby letters of credit	$ 100,000
Notional amount of performance standby letters of credit	2,800,000
Notional amount of commercial letters of credit	0
Financial instrument of credit risk	300,000	$ 300,000
Unused commitments and letters of credit [Member]
Loss Contingencies [Line Items]
Commitment liability	$ 8,200,000	$ 4,100,000