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Credit Quality - Schedule of Nonaccrual Loans, Segregated by Class of Loans and Leases (Detail) - USD ($) $ in Thousands | Dec. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Nonaccruals | $ 96,492 | $ 56,460
With No Related Allowance for Credit Losses | 94,029 | 20,598
Other Commercial [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Nonaccruals | 5,978 | 18,588
With No Related Allowance for Credit Losses | 3,515 | 584
Residential Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Nonaccruals | 15,423 | 8,517
With No Related Allowance for Credit Losses | 15,423 | 5,562
Owner-Occupied [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Nonaccruals | 1,749 | 1,284
With No Related Allowance for Credit Losses | 1,749 | 1,284
Nonowner-Occupied [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Nonaccruals | 71,038 | 23,379
With No Related Allowance for Credit Losses | 71,038 | 8,475
Construction [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Nonaccruals | 1,301 | 2,588
With No Related Allowance for Credit Losses | 1,301 | 2,589
Bankcard [Member] | Consumer [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Nonaccruals | 0 | 0
With No Related Allowance for Credit Losses | 0 | 0
Other Consumer [Member] | Consumer [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Nonaccruals | 1,003 | 2,104
With No Related Allowance for Credit Losses | $ 1,003 | $ 2,104

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