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Other Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
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Other Liabilities [Abstract] |  |
Dividends and dividend equivalents payable | $ 34,016 | $ 90,749
Accrued interest payable | 11,116 | 18,238
Accrued expenses and other | 25,390 | 43,625
Total Other Liabilities | $ 70,522 | $ 152,612

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