Financial Derivatives (Schedule of Derivative Activity) (Details) - USD ($) $ in Thousands |
9 Months Ended | 12 Months Ended |
|---|---|---|
Sep. 30, 2022 |
Dec. 31, 2021 |
|
| Interest rate swaps | ||
| Derivative [Line Items] | ||
| Average Monthly Notional | $ 2,994,551 | $ 1,343,094 |
| TBA securities | ||
| Derivative [Line Items] | ||
| Average Monthly Notional | 788,951 | 1,105,311 |
| Credit default swaps | ||
| Derivative [Line Items] | ||
| Average Monthly Notional | 94,392 | 110,084 |
| Total return swaps | ||
| Derivative [Line Items] | ||
| Average Monthly Notional | 299 | 2,593 |
| Futures | ||
| Derivative [Line Items] | ||
| Average Monthly Notional | 148,880 | 193,600 |
| Options | ||
| Derivative [Line Items] | ||
| Average Monthly Notional | 18,000 | 13,846 |
| Forwards | ||
| Derivative [Line Items] | ||
| Average Monthly Notional | 14,289 | 21,188 |
| Warrants | ||
| Derivative [Line Items] | ||
| Average Monthly Notional | $ 3,365 | $ 1,948 |