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Other Assets - Impact of Derivative Instruments on Earnings (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] |  |  |  |
Income on swap variable receive leg | $ 45,773 | $ 41,427 | $ 134,082 | $ 113,062
Expense on swap fixed pay leg | (15,903) | (12,563) | (46,188) | (36,416)
Unrealized mark-to-market gain/(loss) | (57,099) | 9,433 | (44,155) | 5,704
Net price alignment expense on margin collateral received | (2,059) | (3,437) | (6,999) | (8,247)
Realized gain/(loss) on terminated swaps | (27,530) | 0 | (27,530) | 0
Total Net gain/(loss) on derivatives used for risk management purposes | $ (56,818) | $ 34,860 | $ 9,210 | $ 74,103

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