Quarterly report [Sections 13 or 15(d)]

Loans - Additional Information (Detail)

v3.26.1
Loans - Additional Information (Detail)
3 Months Ended
Mar. 31, 2026
USD ($)
Loan
Mar. 31, 2025
USD ($)
Dec. 31, 2025
USD ($)
Property
Dec. 31, 2024
USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Accrued interest on loans $ 23,320,000   $ 24,466,000  
Pledged loans, carrying value 2,260,000,000   2,400,000,000  
Sale of residential mortgage loans from the held for investment portfolio   $ 10,000,000    
Total loans 6,545,466,000   6,563,368,000  
Loans held for sale, at the lower of cost or fair value 4,932,000 11,831,000 7,403,000 $ 8,579,000
Gains on sale of second draw PPP loans 2,102,000 2,000,000    
Proceeds from sale of second draw PPP loans 64,244,000 32,164,000    
Interest income on nonaccrual loans 1,000 346,000    
Credit loss expense 2,892,000 2,721,000    
Other real estate owned ("OREO") $ 0   $ 1,980,000  
Number of real estate properties | Property     2  
Number of loan modified | Loan 0      
Commercial and Industrial        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Total loans $ 1,152,544,000   $ 1,074,908,000  
Loans held for sale, at the lower of cost or fair value 2,218,000 6,816,000 2,418,000 $ 4,585,000
Proceeds from sale of second draw PPP loans 11,117,000 14,570,000    
Payment defaults on loans modified within the preceding 12 months 0 $ 0    
Loans Pledged to Secure Advances        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Pledged loans, carrying value 2,260,000,000   2,400,000,000  
Loans pledged 515,700,000   528,100,000  
Loans | Accrued Interest        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Accrued interest on loans $ 20,100,000   $ 20,700,000