v3.26.3
Loans and Allowance for Credit Losses - Summary of Collateral Dependent Loans (Details) - USD ($)
$ in Thousands
Sep. 30, 2026
Jun. 30, 2026
Dec. 31, 2025
Sep. 30, 2025
Jun. 30, 2025
Dec. 31, 2024
Financing Receivable, Allowance for Credit Loss [Line Items]            
Allowance for credit losses $ (208,104) $ (213,724) $ (169,530) $ (173,813) $ (164,794) $ (176,994)
Collateral Dependent Loans            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Loans individually evaluted for credit losses 5,777   4,573      
Allowance for credit losses (222)   (93)      
Real Estate | Collateral Dependent Loans            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Loans individually evaluted for credit losses 5,695   4,383      
Business Assets | Collateral Dependent Loans            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Loans individually evaluted for credit losses 82   190      
Commercial and industrial loans            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Allowance for credit losses (7,651) (6,882) (8,757) (8,466) (8,754) (11,051)
Commercial and industrial loans | Collateral Dependent Loans            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Loans individually evaluted for credit losses 82   190      
Allowance for credit losses (82)   (93)      
Commercial and industrial loans | Real Estate | Collateral Dependent Loans            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Loans individually evaluted for credit losses 0   0      
Commercial and industrial loans | Business Assets | Collateral Dependent Loans            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Loans individually evaluted for credit losses 82   190      
Real Estate Portfolio Segment | Residential real estate loans            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Allowance for credit losses (13,887) (10,659) (11,100) (17,604) (12,224) (12,250)
Real Estate Portfolio Segment | Residential real estate loans | Collateral Dependent Loans            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Loans individually evaluted for credit losses 1,695   39      
Allowance for credit losses (140)   0      
Real Estate Portfolio Segment | Residential real estate loans | Real Estate | Collateral Dependent Loans            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Loans individually evaluted for credit losses 1,695   39      
Real Estate Portfolio Segment | Residential real estate loans | Business Assets | Collateral Dependent Loans            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Loans individually evaluted for credit losses 0   0      
Real Estate Portfolio Segment | Commercial real estate loans            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Allowance for credit losses (5,616) (5,712) (5,496) (6,283) (7,300) (8,456)
Real Estate Portfolio Segment | Commercial real estate loans | Collateral Dependent Loans            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Loans individually evaluted for credit losses 4,000   4,344      
Allowance for credit losses 0   0      
Real Estate Portfolio Segment | Commercial real estate loans | Real Estate | Collateral Dependent Loans            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Loans individually evaluted for credit losses 4,000   4,344      
Real Estate Portfolio Segment | Commercial real estate loans | Business Assets | Collateral Dependent Loans            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Loans individually evaluted for credit losses 0   0      
Construction, land and land development loans            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Allowance for credit losses $ (3,796) $ (3,990) $ (6,580) $ (6,446) $ (5,265) $ (3,439)