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v3.24.3

Loans and ACL - Additional Information (Detail) | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2024 USD ($) | Sep. 30, 2023 USD ($) | Jun. 30, 2023 USD ($) | Sep. 30, 2024 USD ($) Loan | Sep. 30, 2023 USD ($) | Dec. 31, 2023 USD ($)
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Interest income from nonaccrual loans | $ 275,000 | $ 0 |  | $ 463,000 | $ 89,000 |
Current period net charge-offs | 7,913,000 | 2,581,000 |  | 23,225,000 | 12,909,000 |
Accrued interest excluded from ACL | 11,100,000 |  |  | 11,100,000 |  | $ 13,200,000
Loans pledged | 2,179,508,000 |  |  | 2,179,508,000 |  | 2,430,117,000
Modified term extension and forbearance amortized cost | 0 |  |  | 804,000 |  |
Financing Receivable, Modified in Period, Amount | 3,372,000 | 9,102,000 |  | 3,801,000 | 50,989,000 |
Recovery of credit losses | 11,330,000 | 2,045,000 |  | 15,185,000 | 3,279,000 |
Recorded investment of PCD Loans |  |  |  | 48,500,000 |  | 51,000,000
Recorded investment, estimated allowance for credit loss |  |  |  | 463,000 |  | 529,000
Recorded investment, PCD Discount (Premium) |  |  |  | $ 3,000,000 |  | 3,800,000
Number of residential mortgage loans in the process of foreclosure | Loan |  |  |  | 0 |  |
Cash payments received |  |  |  |  | 4,500,000 |
Unfunded commitments | 0 |  |  | $ 0 |  | 0
Extended Maturity and Principal Forgiveness [Member] |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Financing Receivable, Modified in Period, Amount | 2,150,000 | 8,805,000 |  | 2,188,000 | 38,958,000 |
Loans Held For Sale [Member] | Commercial Loan [Member] |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Current period net charge-offs |  |  |  | 9,400,000 |  |
Related Party [Member] |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Recovery of credit losses | 8,400,000 |  |  |  |  |
Commercial and Residential Mortgages [Member] | Asset Pledged as Collateral without Right [Member] | Federal Home Loan Bank Advances [Member] |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Loans pledged | 802,600 |  |  | 802,600 |  | 767,100,000
Commercial and Industrial [Member] |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Current period net charge-offs | 6,001,000 | 1,832,000 |  | 19,940,000 | 9,927,000 |
Loans pledged | 378,922,000 |  |  | 378,922,000 |  | 508,944,000
Modified term extension and forbearance amortized cost | 0 |  | $ 0 | 350,000 |  |
Recovery of credit losses | 11,095,000 | 1,596,000 |  | 14,455,000 | 2,327,000 |
Commercial and Industrial [Member] | Extended Maturity and Principal Forgiveness [Member] |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Financing Receivable, Modified in Period, Amount | 335,000 | $ 5,806,000 | $ 32,800,000 | 335,000 | $ 32,750,000 |
Commercial and Industrial [Member] | Asset Pledged as Collateral without Right [Member] | Federal Reserve Bank Borrowings [Member] |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Loans pledged | $ 69,600 |  |  | $ 69,600 |  | $ 161,000,000

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