v3.26.1
Loans and Allowance for Credit Losses - Schedule of Loan Modifications to Borrowers Experiencing Financial Difficulty (Details)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2026
USD ($)
payment
Jun. 30, 2025
USD ($)
payment
Jun. 30, 2026
USD ($)
payment
Jun. 30, 2025
USD ($)
payment
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance $ 16,527 $ 11,040 $ 36,274 $ 14,228 $ 73,285 $ 17,935
% of Total Portfolio 0.07% 0.06% 0.16% 0.08%    
Total Past Due            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance         14,877 982
30-59 Days Past Due            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance         239 345
60-89 Days Past Due            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance         13,984 147
90 or More Days Past Due            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance         654 490
Current            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance         58,408 16,953
Interest Rate Reduction            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance $ 0 $ 194 $ 76 $ 311    
% of Total Portfolio 0.00% 0.00% 0.00% 0.00%    
Other-than-Insignificant Delay in Repayment            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance $ 6,889 $ 1,777 $ 9,558 $ 1,898    
% of Total Portfolio 0.03% 0.01% 0.04% 0.01%    
Term Extension            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance $ 9,545 $ 3 $ 24,348 $ 2,685    
% of Total Portfolio 0.04% 0.00% 0.10% 0.01%    
Combination - Interest Rate Reduction & Other-than-Insignificant Delay in Repayment            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance $ 23 $ 9,066 $ 2,222 $ 9,334    
% of Total Portfolio 0.00% 0.05% 0.01% 0.05%    
Combination—Interest Rate Reduction, Term Extension & Other-than-Insignificant Delay in Repayment            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance $ 70   $ 70      
% of Total Portfolio 0.00%   0.00%      
Commercial Portfolio Segment | Commercial and industrial            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance $ 7,725 $ 0 $ 7,725 $ 2,682 8,706 3,547
% of Total Portfolio 0.17% 0.00% 0.17% 0.07%    
Interest-only period 6 months   6 months      
Term Extension 4 months   4 months 1 year 1 month 6 days    
Commercial Portfolio Segment | Commercial and industrial | Total Past Due            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance         0 0
Commercial Portfolio Segment | Commercial and industrial | 30-59 Days Past Due            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance         0 0
Commercial Portfolio Segment | Commercial and industrial | 60-89 Days Past Due            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance         0 0
Commercial Portfolio Segment | Commercial and industrial | 90 or More Days Past Due            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance         0 0
Commercial Portfolio Segment | Commercial and industrial | Current            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance         8,706 3,547
Commercial Portfolio Segment | Commercial and industrial | Other-than-Insignificant Delay in Repayment            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance $ 5,522   $ 5,522      
% of Total Portfolio 0.12%   0.12%      
Commercial Portfolio Segment | Commercial and industrial | Term Extension            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance $ 2,203 $ 0 $ 2,203 $ 2,682    
% of Total Portfolio 0.05% 0.00% 0.05% 0.07%    
Commercial Portfolio Segment | Commercial real estate            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance $ 7,077 $ 9,066 $ 21,062 $ 9,066 54,314 9,066
% of Total Portfolio 0.08% 0.13% 0.23% 0.13%    
Other-than-Insignificant Delay in Repayment | payment   12   12    
Term Extension 4 months 1 year 4 months 1 year    
Commercial Portfolio Segment | Commercial real estate | Total Past Due            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance         13,984 0
Commercial Portfolio Segment | Commercial real estate | 30-59 Days Past Due            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance         0 0
Commercial Portfolio Segment | Commercial real estate | 60-89 Days Past Due            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance         13,984 0
Commercial Portfolio Segment | Commercial real estate | 90 or More Days Past Due            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance         0 0
Commercial Portfolio Segment | Commercial real estate | Current            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance         40,330 9,066
Commercial Portfolio Segment | Commercial real estate | Term Extension            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance $ 7,077   $ 21,062      
% of Total Portfolio 0.08%   0.23%      
Commercial Portfolio Segment | Commercial real estate | Combination - Interest Rate Reduction & Other-than-Insignificant Delay in Repayment            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance   $ 9,066   $ 9,066    
% of Total Portfolio   0.13%   0.13%    
Commercial Portfolio Segment | Business banking            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance $ 1,255 $ 1,266 $ 6,735 $ 1,692 8,510 2,440
% of Total Portfolio 0.08% 0.09% 0.43% 0.12%    
Other-than-Insignificant Delay in Repayment | payment 5 5 8 5    
Term Extension 5 months 6 months 4 months 8 months    
Commercial Portfolio Segment | Business banking | Total Past Due            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance         745 288
Commercial Portfolio Segment | Business banking | 30-59 Days Past Due            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance         239 196
Commercial Portfolio Segment | Business banking | 60-89 Days Past Due            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance         0 52
Commercial Portfolio Segment | Business banking | 90 or More Days Past Due            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance         506 40
Commercial Portfolio Segment | Business banking | Current            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance         7,765 2,152
Commercial Portfolio Segment | Business banking | Maximum            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Interest Rate Reduction 12.50%   10.60% 7.80%    
Commercial Portfolio Segment | Business banking | Minimum            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Interest Rate Reduction 7.80%   7.50% 6.00%    
Commercial Portfolio Segment | Business banking | Interest Rate Reduction            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance $ 0 $ 0 $ 76 $ 37    
% of Total Portfolio 0.00% 0.00% 0.00% 0.00%    
Commercial Portfolio Segment | Business banking | Other-than-Insignificant Delay in Repayment            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance $ 897 $ 1,263 $ 3,416 $ 1,384    
% of Total Portfolio 0.06% 0.09% 0.22% 0.10%    
Commercial Portfolio Segment | Business banking | Term Extension            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance $ 265 $ 3 $ 951 $ 3    
% of Total Portfolio 0.02% 0.00% 0.06% 0.00%    
Commercial Portfolio Segment | Business banking | Combination - Interest Rate Reduction & Other-than-Insignificant Delay in Repayment            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance $ 23 $ 0 $ 2,222 $ 268    
% of Total Portfolio 0.00% 0.00% 0.14% 0.02%    
Commercial Portfolio Segment | Business banking | Combination—Interest Rate Reduction, Term Extension & Other-than-Insignificant Delay in Repayment            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance $ 70   $ 70      
% of Total Portfolio 0.00%   0.00%      
Commercial Portfolio Segment | Residential real estate | Maximum            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Interest Rate Reduction       7.30%    
Commercial Portfolio Segment | Residential real estate | Minimum            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Interest Rate Reduction       4.50%    
Residential Real Estate | Residential real estate            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance $ 470 $ 486 $ 602 $ 486 1,186 1,676
% of Total Portfolio 0.01% 0.01% 0.01% 0.01%    
Other-than-Insignificant Delay in Repayment | payment 6 10 6 10    
Term Extension     6 months      
Residential Real Estate | Residential real estate | Total Past Due            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance         0 545
Residential Real Estate | Residential real estate | 30-59 Days Past Due            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance         0 0
Residential Real Estate | Residential real estate | 60-89 Days Past Due            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance         0 95
Residential Real Estate | Residential real estate | 90 or More Days Past Due            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance         0 450
Residential Real Estate | Residential real estate | Current            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance         1,186 1,131
Residential Real Estate | Residential real estate | Maximum            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Interest Rate Reduction   7.30%        
Residential Real Estate | Residential real estate | Minimum            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Interest Rate Reduction   4.50%        
Residential Real Estate | Residential real estate | Interest Rate Reduction            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance   $ 122   $ 122    
% of Total Portfolio   0.00%   0.00%    
Residential Real Estate | Residential real estate | Other-than-Insignificant Delay in Repayment            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance $ 470 $ 364 $ 470 $ 364    
% of Total Portfolio 0.01% 0.01% 0.01% 0.01%    
Residential Real Estate | Residential real estate | Term Extension            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance $ 0   $ 132      
% of Total Portfolio 0.00%   0.00%      
Consumer Portfolio Segment | Consumer home equity            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance $ 0 $ 222 $ 150 $ 302 569 1,206
% of Total Portfolio 0.00% 0.02% 0.01% 0.02%    
Other-than-Insignificant Delay in Repayment | payment   8 9 8    
Consumer Portfolio Segment | Consumer home equity | Total Past Due            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance         148 149
Consumer Portfolio Segment | Consumer home equity | 30-59 Days Past Due            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance         0 149
Consumer Portfolio Segment | Consumer home equity | 60-89 Days Past Due            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance         0 0
Consumer Portfolio Segment | Consumer home equity | 90 or More Days Past Due            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance         148 0
Consumer Portfolio Segment | Consumer home equity | Current            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance         $ 421 $ 1,057
Consumer Portfolio Segment | Consumer home equity | Maximum            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Interest Rate Reduction   7.00%   7.00%    
Consumer Portfolio Segment | Consumer home equity | Minimum            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Interest Rate Reduction   4.00%   4.50%    
Consumer Portfolio Segment | Consumer home equity | Interest Rate Reduction            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance   $ 72   $ 152    
% of Total Portfolio   0.00%   0.01%    
Consumer Portfolio Segment | Consumer home equity | Other-than-Insignificant Delay in Repayment            
Financing Receivable, Troubled Debt Restructuring [Line Items]            
Amortized Cost Balance $ 0 $ 150 $ 150 $ 150    
% of Total Portfolio 0.00% 0.01% 0.01% 0.01%