Quarterly report pursuant to Section 13 or 15(d)

Loans - Additional Information (Detail)

v3.23.3
Loans - Additional Information (Detail)
3 Months Ended 9 Months Ended
Sep. 30, 2023
USD ($)
Loan
Sep. 30, 2022
USD ($)
Loan
Sep. 30, 2023
USD ($)
Loan
Sep. 30, 2022
USD ($)
Loan
Jun. 30, 2023
USD ($)
Dec. 31, 2022
USD ($)
Jun. 30, 2022
USD ($)
Dec. 31, 2021
USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Accrued interest on loans $ 20,715,000   $ 20,715,000     $ 18,537,000    
Loans receivable 6,020,785,000   6,020,785,000     5,967,133,000    
Loans held for sale, at the lower of cost or fair value 11,767,000 $ 10,044,000 11,767,000 $ 10,044,000 $ 7,293,000 8,043,000 $ 18,528,000 $ 13,342,000
Gains on sale of second draw PPP loans     4,253,000 7,545,000        
Proceeds from sale of second draw PPP loans 21,010,000 43,685,000 70,652,000 115,199,000        
Interest income on nonaccrual loans $ 26,000 $ 5,000 $ 160,000 $ 40,000        
Number of loan modified | Loan 0 0 0 0        
Past due loans receivable $ 19,962,000   $ 19,962,000     11,819,000    
Other real estate owned ("OREO") 117,000   117,000     117,000    
Loans Pledged to Secure Advances                
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Loans receivable 2,410,000,000   2,410,000,000     1,990,000,000    
Payment Protection Program                
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Loans receivable 200,000   200,000     900,000    
SBA Loans                
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Loans held for sale, at the lower of cost or fair value 11,800,000   11,800,000     8,000,000.0    
Prepaid Expenses and Other Assets                
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Other real estate owned ("OREO") 100,000   100,000     100,000    
Loans | Accrued Interest                
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Accrued interest on loans $ 17,700,000   $ 17,700,000     $ 16,000,000.0