Loans and Allowance For Credit Losses - Summary of Financing Receivable and Related Impairment Methodology (Detail) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	$ 1,583,631	$ 1,593,421
Commercial And Industrial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	622,270	634,535
Real estate - construction and land [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	60,595	63,730
SBA [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	4,936	7,220
Other Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	39,486	39,695
Loans Receivable [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans individually evaluated for impairment		1,250
Loans collectively evaluated for impairment		1,592,171
Total gross loans	1,583,631	1,593,421
Loans collectively evaluated for impairment		17,005
Total allowance for loan losses		17,005
Loans Receivable [Member] | Commercial And Industrial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans individually evaluated for impairment		1,028
Loans collectively evaluated for impairment		633,507
Total gross loans	622,270	634,535
Loans collectively evaluated for impairment		10,620
Total allowance for loan losses		10,620
Loans Receivable [Member] | Real estate - other [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans collectively evaluated for impairment		848,241
Total gross loans	856,344	848,241
Loans collectively evaluated for impairment		5,322
Total allowance for loan losses		5,322
Loans Receivable [Member] | Real estate - construction and land [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans collectively evaluated for impairment		63,730
Total gross loans	60,595	63,730
Loans collectively evaluated for impairment		884
Total allowance for loan losses		884
Loans Receivable [Member] | SBA [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans individually evaluated for impairment		222
Loans collectively evaluated for impairment		6,998
Total gross loans	4,936	7,220
Loans collectively evaluated for impairment		132
Total allowance for loan losses		132
Loans Receivable [Member] | Other Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans collectively evaluated for impairment		39,695
Total gross loans	$ 39,486	39,695
Loans collectively evaluated for impairment		47
Total allowance for loan losses		$ 47