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Fair Value Qualitative information about Level 3 fair value measurements (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
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Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Impaired Loan Fair Value | $ 2,930 | $ 5,773
Other Assets, Fair Value Disclosure | 7,086,524 | 6,918,326
Loans Held-for-sale, Fair Value Disclosure | 2,866 | 2,149
Fair Value, Inputs, Level 3 [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Impaired Loan Fair Value | 2,930 | 5,773
Other Assets, Fair Value Disclosure | 7,086,524 | 6,918,326
Fair Value, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Impaired Loan Fair Value |  | 5,573
Fair Value, Nonrecurring [Member] | Residential Real Estate [Member] | Loans Receivable [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Impaired Loan Fair Value |  | 200
Estimate of Fair Value Measurement [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Impaired Loan Fair Value |  | $ 5,773
Estimate of Fair Value Measurement [Member] | Fair Value, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Impaired Loan Fair Value | 2,289 |
Estimate of Fair Value Measurement [Member] | Fair Value, Nonrecurring [Member] | Residential Real Estate [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Impaired Loan Fair Value | $ 186 |

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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