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Loans and Leases and the Allowance for Credit Losses - Loan Modification Activities to Borrowers Experiencing Financial Difficulty on Financing Receivables (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | $ 441,000 | $ 348,000 | $ 916,000 | $ 641,000
Percent of Total Loan Class | 0.33% | 0.26% | 0.68% | 0.48%
Commercial and industrial |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | $ 64,000 | $ 27,000 | $ 209,000 | $ 95,000
Percent of Total Loan Class | 0.11% | 0.05% | 0.35% | 0.17%
Commercial | Commercial Real Estate |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | $ 168,000 | $ 60,000 | $ 377,000 | $ 150,000
Percent of Total Loan Class | 0.74% | 0.22% | 1.66% | 0.56%
Residential builder and developer | Commercial Real Estate |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | $ 26,000 | $ 85,000 | $ 27,000 | $ 91,000
Percent of Total Loan Class | 2.49% | 7.49% | 2.62% | 7.99%
Other commercial construction | Commercial Real Estate |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | $ 125,000 | $ 132,000 | $ 197,000 | $ 223,000
Percent of Total Loan Class | 2.18% | 1.95% | 3.44% | 3.29%
Residential | Residential Real Estate |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | $ 56,000 | $ 39,000 | $ 101,000 | $ 72,000
Percent of Total Loan Class | 0.25% | 0.17% | 0.46% | 0.32%
Residential — limited documentation | Residential Real Estate |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | $ 2,000 | $ 4,000 | $ 4,000 | $ 9,000
Percent of Total Loan Class | 0.26% | 0.38% | 0.45% | 0.90%
Home equity lines and loans | Consumer: |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | $ 0 | $ 1,000 | $ 1,000 | $ 1,000
Percent of Total Loan Class | 0.00% | 0.02% | 0.03% | 0.02%
Recreational finance | Consumer: |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | $ 0 | $ 0 | $ 0 | $ 0
Percent of Total Loan Class | 0.00% | 0.00% | 0.00% | 0.00%
Automobile | Consumer: |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | $ 0 | $ 0 | $ 0 | $ 0
Percent of Total Loan Class | 0.00% | 0.00% | 0.00% | 0.01%
Other | Consumer: |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | $ 0 | $ 0 | $ 0 | $ 0
Percent of Total Loan Class | 0.00% | 0.00% | 0.00% | 0.00%
Payment Deferral (a) |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | $ 427,000 | $ 329,000 | $ 896,000 | $ 619,000
Payment Deferral (a) | Commercial and industrial |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 51,000 | 26,000 | 196,000 | 93,000
Payment Deferral (a) | Commercial | Commercial Real Estate |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 168,000 | 52,000 | 373,000 | 142,000
Payment Deferral (a) | Residential builder and developer | Commercial Real Estate |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 26,000 | 85,000 | 27,000 | 91,000
Payment Deferral (a) | Other commercial construction | Commercial Real Estate |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 125,000 | 124,000 | 197,000 | 215,000
Payment Deferral (a) | Residential | Residential Real Estate |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 55,000 | 38,000 | 99,000 | 69,000
Payment Deferral (a) | Residential — limited documentation | Residential Real Estate |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 2,000 | 3,000 | 4,000 | 8,000
Payment Deferral (a) | Home equity lines and loans | Consumer: |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 0 | 1,000 | 0 | 1,000
Payment Deferral (a) | Recreational finance | Consumer: |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 0 | 0 | 0 | 0
Payment Deferral (a) | Automobile | Consumer: |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 0 | 0 | 0 | 0
Payment Deferral (a) | Other | Consumer: |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 0 | 0 | 0 | 0
Interest Rate Reduction |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 13,000 | 1,000 | 13,000 | 1,000
Interest Rate Reduction | Commercial and industrial |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 13,000 | 1,000 | 13,000 | 1,000
Interest Rate Reduction | Commercial | Commercial Real Estate |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 0 | 0 | 0 | 0
Interest Rate Reduction | Residential builder and developer | Commercial Real Estate |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 0 | 0 | 0 | 0
Interest Rate Reduction | Other commercial construction | Commercial Real Estate |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 0 | 0 | 0 | 0
Interest Rate Reduction | Residential | Residential Real Estate |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 0 | 0 | 0 | 0
Interest Rate Reduction | Residential — limited documentation | Residential Real Estate |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 0 | 0 | 0 | 0
Interest Rate Reduction | Home equity lines and loans | Consumer: |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 0 | 0 | 0 | 0
Interest Rate Reduction | Recreational finance | Consumer: |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 0 | 0 | 0 | 0
Interest Rate Reduction | Automobile | Consumer: |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 0 | 0 | 0 | 0
Interest Rate Reduction | Other | Consumer: |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 0 | 0 | 0 | 0
Other |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 0 | 0 | 0 | 0
Other | Commercial and industrial |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 0 | 0 | 0 | 0
Other | Commercial | Commercial Real Estate |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 0 | 0 | 0 | 0
Other | Residential builder and developer | Commercial Real Estate |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 0 | 0 | 0 | 0
Other | Other commercial construction | Commercial Real Estate |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 0 | 0 | 0 | 0
Other | Residential | Residential Real Estate |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 0 | 0 | 0 | 0
Other | Residential — limited documentation | Residential Real Estate |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 0 | 0 | 0 | 0
Other | Home equity lines and loans | Consumer: |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 0 | 0 | 0 | 0
Other | Recreational finance | Consumer: |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 0 | 0 | 0 | 0
Other | Automobile | Consumer: |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 0 | 0 | 0 | 0
Other | Other | Consumer: |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 0 | 0 | 0 | 0
Combination of Modification Types |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 1,000 | 18,000 | 7,000 | 21,000
Combination of Modification Types | Commercial and industrial |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 0 | 0 | 0 | 1,000
Combination of Modification Types | Commercial | Commercial Real Estate |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 0 | 8,000 | 4,000 | 8,000
Combination of Modification Types | Residential builder and developer | Commercial Real Estate |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 0 | 0 | 0 | 0
Combination of Modification Types | Other commercial construction | Commercial Real Estate |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 0 | 8,000 | 0 | 8,000
Combination of Modification Types | Residential | Residential Real Estate |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 1,000 | 1,000 | 2,000 | 3,000
Combination of Modification Types | Residential — limited documentation | Residential Real Estate |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 0 | 1,000 | 0 | 1,000
Combination of Modification Types | Home equity lines and loans | Consumer: |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 0 | 0 | 1,000 | 0
Combination of Modification Types | Recreational finance | Consumer: |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 0 | 0 | 0 | 0
Combination of Modification Types | Automobile | Consumer: |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | 0 | 0 | 0 | 0
Combination of Modification Types | Other | Consumer: |  |  |  |
Financing Receivable, Modifications other than Troubled Debt Restructuring [Line Items] |  |  |  |
Modified in period | $ 0 | $ 0 | $ 0 | $ 0

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- Definition Amortized cost excluding accrued interest, of financing receivable modified during period for debtor experiencing financial difficulty. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-42 + Details
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