v3.21.2

Financial Derivatives (Schedule of Derivative Activity) (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2021 | Dec. 31, 2020
Interest rate swaps |  |
Derivative [Line Items] |  |
Average Monthly Notional | $ 1,126,497 | $ 1,009,110
TBA securities |  |
Derivative [Line Items] |  |
Average Monthly Notional | 1,083,070 | 713,634
Credit default swaps |  |
Derivative [Line Items] |  |
Average Monthly Notional | 130,899 | 277,990
Total return swaps |  |
Derivative [Line Items] |  |
Average Monthly Notional | 3,372 | 6,975
Futures |  |
Derivative [Line Items] |  |
Average Monthly Notional | 184,690 | 149,538
Options |  |
Derivative [Line Items] |  |
Average Monthly Notional | 12,000 | 1,500
Forwards |  |
Derivative [Line Items] |  |
Average Monthly Notional | 22,498 | 26,413
Warrants |  |
Derivative [Line Items] |  |
Average Monthly Notional | $ 1,956 | $ 1,570

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