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Loans and Allowance For Loan Losses - Summary of Information Related to Impaired Loans (Detail) - Loans Receivable [Member] - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Commercial And Industrial [Member]    
Financing Receivable, Impaired [Line Items]    
Recorded Investment With no related allowance $ 1,028  
Unpaid Principal Balance With no related allowance 1,678  
Average Recorded Investment With no related allowance 1,028  
Interest Income Recognized With no related allowance 0  
Recorded Investment With an allowance 1,028  
Unpaid Principal Balance With an allowance 1,678  
Related Allowance 0  
Average Recorded Investment With an allowance 1,028  
Interest Income Recognized With an allowance 0  
SBA [Member]    
Financing Receivable, Impaired [Line Items]    
Recorded Investment With no related allowance 222 $ 232
Unpaid Principal Balance With no related allowance 896 705
Average Recorded Investment With no related allowance 227 233
Interest Income Recognized With no related allowance 4 14
Recorded Investment With an allowance 0 499
Unpaid Principal Balance With an allowance 0 499
Related Allowance 0 142
Average Recorded Investment With an allowance 0 477
Interest Income Recognized With an allowance 0 59
Recorded Investment 222 731
Unpaid Principal Balance 896 1,204
Average Recorded Investment 227 710
Interest Income Recognized $ 4 $ 73