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Loans and ACL - Summary of Change in the ACL by Loan Segment (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Financing Receivable Impaired [Line Items] |  |  |  |  |
Allowance for credit losses, beginning of period | $ 28,036 | $ 38,567 | $ 35,893 | [1] | $ 30,740
Total Charge-offs | (7,913) | (2,581) | (23,225) |  | (12,909)
Total recoveries | 11,330 | 2,045 | 15,185 |  | 3,279
Net recoveries (charge-offs) | 3,417 | (536) | (8,040) |  | (9,630)
(Recovery of) provision for credit losses - loans | (6,000) | 11,600 | (2,400) |  | 21,103
Allowance for credit losses, end of period | 25,453 | 49,631 | 25,453 |  | 49,631
Commercial and Industrial [Member] |  |  |  |  |
Financing Receivable Impaired [Line Items] |  |  |  |  |
Total Charge-offs | (6,001) | (1,832) | (19,940) |  | (9,927)
Total recoveries | 11,095 | 1,596 | 14,455 |  | 2,327
Construction, commercial [Member] | Real Estate [Member] |  |  |  |  |
Financing Receivable Impaired [Line Items] |  |  |  |  |
Total Charge-offs | 0 | 0 | 0 |  | (28)
Total recoveries | 0 | 5 | 0 |  | 15
Construction, Residential [Member] | Real Estate [Member] |  |  |  |  |
Financing Receivable Impaired [Line Items] |  |  |  |  |
Total Charge-offs | 0 | 0 | (39) |  | 0
Total recoveries | 0 | 132 | 0 |  | 132
Commercial [Member] | Real Estate [Member] |  |  |  |  |
Financing Receivable Impaired [Line Items] |  |  |  |  |
Total Charge-offs | (1,109) | 0 | (1,109) |  | 0
Total recoveries | 0 | 0 | 0 |  | 263
Residential [Member] | Real Estate [Member] |  |  |  |  |
Financing Receivable Impaired [Line Items] |  |  |  |  |
Total Charge-offs | (30) | 0 | (74) |  | (1,255)
Total recoveries | 60 | 126 | 76 |  | 145
Consumer [Member] |  |  |  |  |
Financing Receivable Impaired [Line Items] |  |  |  |  |
Total Charge-offs | (773) | (749) | (2,063) |  | (1,699)
Total recoveries | 175 | 186 | 654 |  | 397
Impact of ASC 326 Adoption [Member] |  |  |  |  |
Financing Receivable Impaired [Line Items] |  |  |  |  |
Allowance for credit losses, beginning of period | $ 0 | $ 0 | $ 0 |  | $ 7,418
[1] | Derived from audited December 31, 2023 Consolidated Financial Statements.

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