Loans and Allowance For Credit Losses - Summary of Non Accrual Loans and the Related Allowance for Credit Losses by Portfolio Segment (Detail) - Loans Receivable [Member] - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans with No Allowance	$ 181
Financing receivable non accrual with allowance	0
Nonaccrual	181	$ 1,250
Commercial And Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans with No Allowance	0
Financing receivable non accrual with allowance	0
Nonaccrual	0	1,028
SBA [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans with No Allowance	181
Financing receivable non accrual with allowance	0
Nonaccrual	$ 181	$ 222