Quarterly report [Sections 13 or 15(d)]

Loans - Additional Information (Detail)

v3.25.3
Loans - Additional Information (Detail)
3 Months Ended 9 Months Ended
Sep. 30, 2025
USD ($)
Loan
Sep. 30, 2024
USD ($)
Sep. 30, 2025
USD ($)
Loan
Sep. 30, 2024
USD ($)
Jun. 30, 2025
USD ($)
Dec. 31, 2024
USD ($)
Jun. 30, 2024
USD ($)
Dec. 31, 2023
USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Accrued interest on loans $ 23,986,000   $ 23,986,000     $ 22,937,000    
Pledged loans receivable, carrying value 2,370,000,000   2,370,000,000     2,460,000,000    
Sale of residential mortgage loans from the held for investment portfolio 25,900,000 $ 20,900,000 36,000,000 $ 70,000,000        
Loans receivable 6,528,259,000   6,528,259,000     6,251,377,000    
Loans held for sale, at the lower of cost or fair value 6,512,000 54,336,000 6,512,000 54,336,000 $ 49,611,000 8,579,000 $ 10,467,000 $ 12,013,000
Gains on sale of second draw PPP loans     6,018,000 4,669,000        
Proceeds from sale of second draw PPP loans 74,513,000 23,017,000 142,066,000 72,094,000        
Financing receivable interest income $ 9,000   $ 370,000          
Number of loan modified | Loan 0   0          
Credit loss expense $ 2,145,000 2,286,000 $ 12,496,000 3,474,000        
Other real estate owned ("OREO") 1,995,000   1,995,000     117,000    
Retail Commercial Loans                
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Payment defaults on loans modified within the preceding 12 months 0 $ 0 0 $ 0        
Loans Pledged to Secure Advances                
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Pledged loans receivable, carrying value 2,370,000,000   2,370,000,000     2,460,000,000    
ACL Loans                
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Credit loss expense     1,400,000          
Prepaid Expenses and Other Assets                
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Other real estate owned ("OREO") 2,000,000   2,000,000     100,000    
Loans | Accrued Interest                
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Accrued interest on loans $ 20,300,000   $ 20,300,000     $ 19,100,000