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Loans and Allowance for Credit Losses - Summary of Collateral Dependent Loans (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Jun. 30, 2024
Dec. 31, 2023
Sep. 30, 2023
Jun. 30, 2023
Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Line Items]            
Allowance for credit losses $ (170,263) $ (147,914) $ (116,958) $ (101,085) $ (110,762) $ (74,029)
Collateral Dependent Loans            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Loans individually evaluated 1,073   7,315      
Allowance for credit losses (140)   0      
Real Estate | Collateral Dependent Loans            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Loans individually evaluated 875   7,315      
Business Assets | Collateral Dependent Loans            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Loans individually evaluated 198          
Commercial and industrial loans            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Allowance for credit losses (10,445) (12,103) (8,877) (9,995) (9,551) (4,831)
Commercial and industrial loans | Collateral Dependent Loans            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Loans individually evaluated 198          
Allowance for credit losses (140)          
Commercial and industrial loans | Real Estate | Collateral Dependent Loans            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Loans individually evaluated 0          
Commercial and industrial loans | Business Assets | Collateral Dependent Loans            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Loans individually evaluated 198          
Real Estate Portfolio Segment | Residential real estate loans            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Allowance for credit losses (12,665) (15,532) (13,049) (10,892) (8,849) (4,142)
Real Estate Portfolio Segment | Residential real estate loans | Collateral Dependent Loans            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Loans individually evaluated 44   170      
Allowance for credit losses 0   0      
Real Estate Portfolio Segment | Residential real estate loans | Real Estate | Collateral Dependent Loans            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Loans individually evaluated 44   170      
Real Estate Portfolio Segment | Residential real estate loans | Business Assets | Collateral Dependent Loans            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Loans individually evaluated 0          
Real Estate Portfolio Segment | Commercial real estate loans            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Allowance for credit losses (9,090) (7,319) (7,441) (7,408) (6,952) (5,470)
Real Estate Portfolio Segment | Commercial real estate loans | Collateral Dependent Loans            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Loans individually evaluated 831   7,145      
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 evaluated 831   7,145      
Real Estate Portfolio Segment | Commercial real estate loans | Business Assets | Collateral Dependent Loans            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Loans individually evaluated 0          
Construction, land and land development loans            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Allowance for credit losses (3,552) (6,110) (6,386) (6,671) (6,539) (7,425)
Unallocated            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Allowance for credit losses $ 0 $ 0 $ 0 $ 0 $ 0 $ (1,165)