Loans - Schedule of Components of Provision For Credit Losses (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022
Loans and Leases Receivable Disclosure [Line Items]
Provision for credit losses		$ 300	$ 222
Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Provision for credit losses		90	$ 222
Unfunded Loan Commitments [Member]
Loans and Leases Receivable Disclosure [Line Items]
Provision for credit losses	[1]	$ 210

[1] The allowance for credit losses for unfunded loan commitments is included in other liabilities on the Company's Consolidated Balance Sheets.