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Loans and the Allowance for Credit Losses - Schedule of Recorded Investment in Loans by Category (Detail) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
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Financing Receivable, Recorded Investment [Line Items] |  |
Total portfolio loans | $ 10,702,728 | $ 9,733,478
Loans held for sale | 8,249 | 25,277
Total loans | 10,710,977 | 9,758,755
Commercial and Industrial [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total portfolio loans | 1,571,280 | 1,427,645
Commercial And Industrial - PPP [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total portfolio loans | 8,115 | 162,675
Commercial Real Estate [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total portfolio loans | 6,061,344 | 5,538,968
Commercial Real Estate [Member] | Commercial Real Estate - Land and Construction [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total portfolio loans | 943,887 | 833,880
Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total portfolio loans | 5,117,457 | 4,705,088
Residential Real Estate [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total portfolio loans | 2,140,584 | 1,721,378
Consumer [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total portfolio loans | 226,340 | 277,130
Home Equity [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total portfolio loans | $ 695,065 | $ 605,682

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