v3.26.3
Allowance for Credit Losses - Narrative (Details)
3 Months Ended 9 Months Ended
Sep. 30, 2026
USD ($)
Sep. 30, 2025
USD ($)
Sep. 30, 2026
USD ($)
loan
Sep. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
Financing Receivable, Credit Quality Indicator [Line Items]          
Allowance for credit loss, percent of total loans 1.36%   1.36%   1.20%
(Reversal of) provision for credit losses - loans $ 8,900,000 $ 15,250,000 $ 21,400,000 $ 36,006,000  
Net increase in specific reserve allocations 12,600,000   16,500,000    
Additional reserve requirements for charge-offs and credit quality 2,000,000.0   9,200,000    
Increase in provision for credit loss due to loan growth 200,000        
Increase (decrease) in provision for credit loss due to changes in credit quality and macro economic factors (6,000,000.0)   2,500,000    
Increase in provision for credit loss due to volume changes     1,800,000    
Financing receivable, excluding accrued interest, modified, within the 12 months preceding 0 0 0 0  
Investment in loans, net of unearned income, individually evaluated 191,000,000.0   191,000,000.0   $ 259,300,000
Loans 6,976,861,000   6,976,861,000   $ 6,613,391,000
Individually Evaluated          
Financing Receivable, Credit Quality Indicator [Line Items]          
Individually evaluated loans, minimum balance requirement $ 1,000,000   $ 1,000,000    
Owner Occupied Loans, Individually Evaluated          
Financing Receivable, Credit Quality Indicator [Line Items]          
Unsecured commercial loans, percent 100.00%   100.00%   100.00%
Real estate loans          
Financing Receivable, Credit Quality Indicator [Line Items]          
(Reversal of) provision for credit losses - loans $ (2,306,000) 2,519,000 $ (1,027,000) 8,889,000  
Troubled debt restructuring         $ 0
Recorded investment       0  
Loans 5,060,044,000   5,060,044,000   4,772,853,000
Real estate loans | Single-family residential          
Financing Receivable, Credit Quality Indicator [Line Items]          
Internal risk ratings, loan balance, maximum     3,000,000    
Loans 2,159,674,000   2,159,674,000   1,515,181,000
Commercial Real Estate and Commercial Portfolio Segments          
Financing Receivable, Credit Quality Indicator [Line Items]          
Internal risk ratings, loan balance, minimum     3,000,000    
Commercial loans          
Financing Receivable, Credit Quality Indicator [Line Items]          
(Reversal of) provision for credit losses - loans 14,164,000 $ 12,778,000 21,335,000 $ 22,907,000  
Loans 1,657,316,000   1,657,316,000   1,446,406,000
Commercial loans | Owner Occupied Loans, Individually Evaluated          
Financing Receivable, Credit Quality Indicator [Line Items]          
Loans 81,100,000   81,100,000   84,500,000
Commercial loans | Owner Occupied Loans, Individually Evaluated | Commercial loans          
Financing Receivable, Credit Quality Indicator [Line Items]          
Loans 79,000,000.0   79,000,000.0    
Commercial loans | Owner Occupied Loans, Individually Evaluated | Owner occupied          
Financing Receivable, Credit Quality Indicator [Line Items]          
Loans 2,100,000   2,100,000    
Commercial loans | Owner Occupied Loans, Individually Evaluated | With Specific Reserve          
Financing Receivable, Credit Quality Indicator [Line Items]          
Loans 15,000,000.0   15,000,000.0   2,400,000
Commercial loans | Owner Occupied Loans, Individually Evaluated | Unsecured Commercial Loans          
Financing Receivable, Credit Quality Indicator [Line Items]          
Loans 0   $ 0   $ 200,000
Extended Maturity and Interest Rate Reduction | Real estate loans          
Financing Receivable, Credit Quality Indicator [Line Items]          
Modification, number of loans | loan     1    
Troubled debt restructuring $ 15,800,000   $ 15,800,000    
Percentage of modified financing receivable in period to total financing receivable     0.90%