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Loans and Allowance for Loan Losses - Summary of Impaired Financing Receivables (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Financing Receivable Impaired [Line Items]      
Impaired financing receivable, with no specific allowance recorded, recorded investment $ 20,038   $ 9,733
Impaired financing receivable, with no specific allowance recorded, unpaid principal balance 23,518   10,388
Impaired financing receivable, related allowance 656   879
Impaired financing receivable, average recorded investment 22,488 $ 5,759  
Impaired financing receivable, interest income recognized 124 63  
Commercial and Industrial [Member]      
Financing Receivable Impaired [Line Items]      
Impaired financing receivable, with no specific allowance recorded, recorded investment 3,521    
Impaired financing receivable, with no specific allowance recorded, unpaid principal balance 6,054    
Impaired financing receivable, related allowance 640   836
Impaired financing receivable, with an allowance recorded, recorded investment 3,287   4,612
Impaired financing receivable, with an allowance recorded, unpaid principal balance 3,285   4,612
Impaired financing receivable, with no specific allowance recorded, average recorded investment 5,305 3,250  
Impaired financing receivable, with no specific allowance recorded, interest income recognized 62 35  
Impaired financing receivable, with an allowance recorded, interest income recognized 0 0  
Impaired financing receivable, with an allowance recorded, average recorded investment 3,290 0  
Real Estate [Member] | Mortgage, Commercial [Member]      
Financing Receivable Impaired [Line Items]      
Impaired financing receivable, with no specific allowance recorded, recorded investment 11,216    
Impaired financing receivable, with no specific allowance recorded, unpaid principal balance 12,172    
Impaired financing receivable, related allowance 1   1
Impaired financing receivable, with an allowance recorded, recorded investment 88   3,194
Impaired financing receivable, with an allowance recorded, unpaid principal balance 87   3,849
Impaired financing receivable, with no specific allowance recorded, average recorded investment 11,880 1,384  
Impaired financing receivable, with no specific allowance recorded, interest income recognized 48 14  
Impaired financing receivable, with an allowance recorded, interest income recognized 0 0  
Impaired financing receivable, with an allowance recorded, average recorded investment 88 0  
Real Estate [Member] | Construction, Commercial [Member]      
Financing Receivable Impaired [Line Items]      
Impaired financing receivable, with no specific allowance recorded, recorded investment 523   527
Impaired financing receivable, with no specific allowance recorded, unpaid principal balance 522   527
Impaired financing receivable, with no specific allowance recorded, average recorded investment 524 542  
Impaired financing receivable, with no specific allowance recorded, interest income recognized 0 8  
Real Estate [Member] | Mortgage, Residential [Member]      
Financing Receivable Impaired [Line Items]      
Impaired financing receivable, with no specific allowance recorded, recorded investment 1,345    
Impaired financing receivable, with no specific allowance recorded, unpaid principal balance 1,339    
Impaired financing receivable, related allowance 15   42
Impaired financing receivable, with an allowance recorded, recorded investment 58   1,400
Impaired financing receivable, with an allowance recorded, unpaid principal balance 59   $ 1,400
Impaired financing receivable, with no specific allowance recorded, average recorded investment 1,342 583  
Impaired financing receivable, with no specific allowance recorded, interest income recognized 14 6  
Impaired financing receivable, with an allowance recorded, interest income recognized   0  
Impaired financing receivable, with an allowance recorded, average recorded investment $ 59 $ 0