Loans and Allowance for Credit Losses - Summary of Post-modification Balance of TDRs listed by Type of Modification (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post modification balance of TDRs	$ 3,165	$ 3,165	$ 3,957	$ 3,957
Extended maturity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post modification balance of TDRs		595		997
Adjusted interest rate and extended maturity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post modification balance of TDRs		22		412
Interest only/principal deferred
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post modification balance of TDRs		130		130
Covenant modification
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post modification balance of TDRs		$ 2,418		$ 2,418