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Loans, Allowance for Credit Losses, and Asset Quality Information - Summary of Nonperforming Assets (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2023 | Sep. 30, 2023 | Dec. 31, 2022
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Nonaccrual loans | $ 26,884 | $ 26,884 | $ 28,514
Amortization cost basis | 6,785 | 10,723 |
Total loans | 8,027,037 | 8,027,037 | 6,665,145
Nonperforming Financial Instruments |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Nonaccrual loans | 26,884 | 26,884 | 28,514
Modifications to borrowers in financial distress | 10,723 | 10,723 | 0
TDRs - accruing | 0 | 0 | 9,121
Total loans | 37,607 | 37,607 | 37,635
Foreclosed real estate | 1,235 | 1,235 | 658
Total nonperforming assets | $ 38,842 | $ 38,842 | $ 38,293

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