Quarterly report pursuant to Section 13 or 15(d)

Loans - Additional Information (Detail)

v3.23.2
Loans - Additional Information (Detail)
3 Months Ended 6 Months Ended
Jun. 30, 2023
USD ($)
Loan
Jun. 30, 2022
USD ($)
Loan
Jun. 30, 2023
USD ($)
Loan
Jun. 30, 2022
USD ($)
Loan
Mar. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Mar. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Accrued interest on loans $ 18,163,000   $ 18,163,000     $ 18,537,000    
Loans receivable 5,965,171,000   5,965,171,000     5,967,133,000    
Loans held for sale, at the lower of cost or fair value 7,293,000 $ 18,528,000 7,293,000 $ 18,528,000 $ 3,652,000 8,043,000 $ 15,617,000 $ 13,342,000
Gains on sale of second draw PPP loans     3,081,000 5,295,000        
Proceeds from sale of second draw PPP loans 19,943,000 41,937,000 49,643,000 71,514,000        
Interest income on nonaccrual loans $ 30,000 $ 9,000 $ 134,000 $ 36,000        
Number of loan modified | Loan 0 0 0 0        
Past due loans receivable $ 29,709,000   $ 29,709,000     11,819,000    
Other real estate owned ("OREO") 117,000   117,000     117,000    
Accruing 90 Days or More Past Due                
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Past due loans receivable 0   0     0    
Loans Pledged to Secure Advances                
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Loans receivable 2,350,000,000   2,350,000,000     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 7,300,000   7,300,000     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 $ 15,500,000   $ 15,500,000         $ 16,000,000.0