Annual report [Section 13 and 15(d), not S-K Item 405]

Loans - Additional Information (Detail)

v3.25.4
Loans - Additional Information (Detail)
 12 Months Ended
Dec. 31, 2025
USD ($)
Loan
Property
Dec. 31, 2024
USD ($)
Property
Dec. 31, 2023
USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Loans receivable $ 6,563,368,000 $ 6,251,377,000  
Pledged loans receivable, carrying value 2,400,000,000    
Accrued interest on loans 24,466,000 22,937,000  
Sale of Residential Mortgage Loans From The Held For Investment Portfolio 69,400,000 88,400,000  
Loans held for sale, at the lower of cost or fair value 7,403,000 8,579,000 $ 12,013,000
Gains on sale of second draw PPP loans 7,808,000 6,112,000 5,701,000
Proceeds from sale of second draw PPP loans 171,920,000 $ 139,172,000  
Loans 90 days or more past due and still accruing $ 0    
Number of real estate properties | Property 2 2  
Other real estate owned ("OREO") $ 1,980,000 $ 117,000  
Number of loan modified | Loan 0    
Interest income on nonaccrual loans $ 400,000 100,000 $ 200,000
Retail Commercial Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Payment defaults on loans modified within the preceding 12 months 0    
Pass/Pass-Watch      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Loans receivable 6,466,374,000 6,086,081,000  
Special Mention      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Loans receivable 71,113,000 107,719,000  
Classified      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Loans receivable 25,881,000 25,683,000  
Loans Pledged to Secure Advances      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Pledged loans receivable, carrying value 2,400,000,000 2,460,000,000  
Loans pledged 528,100,000 0  
SBA Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Loans held for sale, at the lower of cost or fair value 7,400,000 8,600,000  
Loans | Accrued Interest      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Accrued interest on loans $ 20,700,000 $ 19,100,000