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Fair Value Measurements Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Estimated Fair Value | $ 2,398,352 | $ 2,646,767
Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Assumptions used to estimate fair value, prepayment speed | 7.40% |
Assumptions used to estimate fair value, discount rate | 9.50% |
Fair Value, Measurements, Recurring |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Estimated Fair Value | $ 2,398,352 | 2,646,767
Derivative assets | 158,112 | 167,468
Fair Value, Measurements, Recurring | Level 2 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Estimated Fair Value | 2,356,191 | 2,428,282
Derivative assets | 157,540 | 166,796
Fair Value, Measurements, Recurring | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Estimated Fair Value | 0 | 0
Derivative assets | 0 | 0
Fair Value, Measurements, Recurring | Level 1 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Estimated Fair Value | 42,161 | 218,485
Derivative assets | 572 | 672
Fair Value, Measurements, Recurring | Foreign Exchange Contract | Level 1 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Total liabilities | 500 | 600
Fair Value, Measurements, Recurring | Foreign Exchange Contract | Level 1 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Derivative assets | 600 | 700
Fair Value, Measurements, Recurring | Forward Commitments | Level 2 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Derivative assets | 500 | 200
Total liabilities | 900 | 200
Fair Value, Measurements, Recurring | Interest Rate Swap | Level 2 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Other financial assets | 157,100 | 166,600
Total liabilities | 245,600 | 296,300
Corporate debt securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Estimated Fair Value | 440,551 | 422,309
Corporate debt securities | Fair Value, Measurements, Recurring |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Estimated Fair Value | 440,551 | 422,309
Corporate debt securities | Fair Value, Measurements, Recurring | Level 2 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Estimated Fair Value | 440,551 | 422,309
Corporate debt securities | Fair Value, Measurements, Recurring | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Estimated Fair Value | 0 | 0
Corporate debt securities | Fair Value, Measurements, Recurring | Level 1 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Estimated Fair Value | 0 | 0
Financial Institutions Subordinated Debt | Fair Value, Measurements, Recurring | Level 2 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Estimated Fair Value | 433,400 | 415,400
Other Corporate Debt | Fair Value, Measurements, Recurring | Level 2 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Estimated Fair Value | $ 7,200 | $ 6,900

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