Allowance for Credit Losses - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Loans and Leases Receivable Disclosure [Line Items]
Interest income recognized on nonaccrual loans	$ 124,000	$ 28,000
Amortized cost basis of loan	2,994,000
Amortized cost	3,910,000
Committed to lend	0		$ 0
Accrued Interest Receivable and Other Assets [Member]
Loans and Leases Receivable Disclosure [Line Items]
Accrued interest receivable on loans	$ 8,367,000		$ 8,714,000