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Other Liabilities (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Other Liabilities [Abstract] |  |
Payable for unsettled investment purchases | $ 0 | $ 103,654
Dividends and dividend equivalents payable | 36,015 | 35,789
Lease liability | 42,873 | 43,576
Accrued interest payable | 36,187 | 30,834
Accrued expenses and other | 188,952 | 122,177
Total Other Liabilities | $ 304,027 | $ 336,030
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration] | Total Other Liabilities | Total Other Liabilities

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