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Fair Value Measurements Narrative (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2025 | Dec. 31, 2024
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
AFS, at estimated fair value | $ 3,594,076 | $ 3,410,899
Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Weighted average annual constant prepayment rate | 8.30% |
Weighted average discount rate | 8.60% |
Fair Value, Recurring [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
AFS, at estimated fair value | $ 3,594,076 | 3,410,899
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
AFS, at estimated fair value | 0 | 0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
AFS, at estimated fair value | 3,594,076 | 3,410,899
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
AFS, at estimated fair value | 0 | 0
Fair Value, Recurring [Member] | Financial Institutions Subordinated Debt [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
AFS, at estimated fair value | 246,600 | 293,100
Fair Value, Recurring [Member] | Other Corporate Debt [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
AFS, at estimated fair value | 8,500 | 7,300
Fair Value, Recurring [Member] | Foreign Exchange Contract [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Other financial liabilities | 1,000 | 1,600
Foreign Exchange Contract [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Other financial assets | 1,200 | 1,700
Forward Commitments [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Other financial assets | 800 | 800
Other financial liabilities | 500 | 100
Interest Rate Swap [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Other financial assets | 127,900 | 159,200
Other financial liabilities | $ 177,100 | $ 252,800

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