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Loans, net and allowance for credit losses -Modifications to Borrowers Experiencing Financial Difficulty (Details) - Payment Deferral | 12 Months Ended
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Dec. 31, 2024 USD ($) loan | Dec. 31, 2023 loan USD ($)
Accrual Modified Loans |  |
Financing Receivable, Modified [Line Items] |  |
Number of Loans | loan | 0 | 0
Nonaccrual Modified Loans |  |
Financing Receivable, Modified [Line Items] |  |
Number of Loans | loan | 1 |
Amortized Cost Basis | $ | $ 408,000 |
Commercial and Industrial | Nonaccrual Modified Loans |  |
Financing Receivable, Modified [Line Items] |  |
Number of Loans | 1 | 0
Amortized Cost Basis | $ | $ 408,000 |
Total Class of Financing Receivable | 0.06% |

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