v3.26.1
Loans and the Allowance for Credit Losses - Recorded Investment in Non-Accrual Loans (Detail) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Financing Receivable, Impaired [Line Items]    
Non-accrual loans $ 146,058 $ 91,584
Commercial and Industrial [Member]    
Financing Receivable, Impaired [Line Items]    
Non-accrual loans 20,119 16,092
Home Equity [Member]    
Financing Receivable, Impaired [Line Items]    
Non-accrual loans 10,163 9,248
Commercial Real Estate [Member]    
Financing Receivable, Impaired [Line Items]    
Non-accrual loans 78,546 30,586
Commercial Real Estate [Member] | Commercial Real Estate - Land and Construction [Member]    
Financing Receivable, Impaired [Line Items]    
Non-accrual loans 28,264 832
Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member]    
Financing Receivable, Impaired [Line Items]    
Non-accrual loans 50,282 29,754
Residential Real Estate [Member]    
Financing Receivable, Impaired [Line Items]    
Non-accrual loans 36,920 34,332
Consumer [Member]    
Financing Receivable, Impaired [Line Items]    
Non-accrual loans $ 310 $ 1,326