v3.25.2
Commitments and Contingencies - Additional Information (Detail) - USD ($)
$ in Millions
6 Months Ended 12 Months Ended
Jun. 30, 2025
Dec. 31, 2024
Mar. 31, 2025
Jun. 30, 2024
Mar. 31, 2024
Dec. 31, 2023
Loss Contingencies [Line Items]            
Conditional commitments $ 39.2 $ 39.5 $ 35.1 $ 35.9 $ 33.1 $ 31.6
Other conditional commitments $ 0.0 $ 6.0        
Percentage of CRE loans occupied by owners 15.00% 16.00%        
Commercial and industrial | Loans Receivable | Credit Concentration Risk            
Loss Contingencies [Line Items]            
Percent of commercial real estate related loans 45.00% 43.00%        
Commercial Real Estate Portfolio Segment | Loans Receivable | Credit Concentration Risk            
Loss Contingencies [Line Items]            
Percent of commercial real estate related loans 30.00% 30.00%        
Unfunded Loan Commitment            
Loss Contingencies [Line Items]            
Conditional commitments $ 39.2 $ 39.5