Loans and Allowance For Loan Losses - Summary of Loan Portfolio Allocated by Management's Internal Risk Ratings (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Credit Quality Indicator [Line Items]
Credit Exposure	$ 1,593,421	$ 1,376,649
Commercial And Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Credit Exposure	634,535	474,281
Real estate - construction and land [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Credit Exposure	63,730	43,194
SBA [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Credit Exposure	7,220	81,403
Other Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Credit Exposure	39,695	80,559
Loans Receivable [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Credit Exposure	1,593,421	1,376,649
Loans Receivable [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Credit Exposure	1,562,246	1,340,841
Loans Receivable [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Credit Exposure	21,249	24,876
Loans Receivable [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Credit Exposure	9,926	10,932
Loans Receivable [Member] | Commercial And Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Credit Exposure	634,535	474,281
Loans Receivable [Member] | Commercial And Industrial [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Credit Exposure	613,395	450,913
Loans Receivable [Member] | Commercial And Industrial [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Credit Exposure	18,157	20,904
Loans Receivable [Member] | Commercial And Industrial [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Credit Exposure	2,983	2,464
Loans Receivable [Member] | Real estate - other [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Credit Exposure	848,241	697,212
Loans Receivable [Member] | Real estate - other [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Credit Exposure	840,993	690,916
Loans Receivable [Member] | Real estate - other [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Credit Exposure	2,602	1,583
Loans Receivable [Member] | Real estate - other [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Credit Exposure	4,646	4,713
Loans Receivable [Member] | Real estate - construction and land [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Credit Exposure	63,730	43,194
Loans Receivable [Member] | Real estate - construction and land [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Credit Exposure	62,031	39,074
Loans Receivable [Member] | Real estate - construction and land [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Credit Exposure	0	1,278
Loans Receivable [Member] | Real estate - construction and land [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Credit Exposure	1,699	2,842
Loans Receivable [Member] | SBA [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Credit Exposure	7,220	81,403
Loans Receivable [Member] | SBA [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Credit Exposure	6,132	79,379
Loans Receivable [Member] | SBA [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Credit Exposure	490	1,111
Loans Receivable [Member] | SBA [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Credit Exposure	598	913
Loans Receivable [Member] | Other Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Credit Exposure	39,695	80,559
Loans Receivable [Member] | Other Loans [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Credit Exposure	$ 39,695	$ 80,559