Financial Derivatives (Schedule of Derivative Activity) (Details) - USD ($) $ in Thousands |
6 Months Ended | 12 Months Ended |
|---|---|---|
Jun. 30, 2026 |
Dec. 31, 2025 |
|
| Interest rate swaps | ||
| Derivative [Line Items] | ||
| Average Monthly Notional | $ 15,264,388 | $ 11,501,990 |
| TBA securities | ||
| Derivative [Line Items] | ||
| Average Monthly Notional | 721,538 | 401,288 |
| Credit default swaps | ||
| Derivative [Line Items] | ||
| Average Monthly Notional | 882,684 | 1,164,093 |
| Futures | ||
| Derivative [Line Items] | ||
| Average Monthly Notional | 241,014 | 213,100 |
| Forwards | ||
| Derivative [Line Items] | ||
| Average Monthly Notional | 35,820 | 22,082 |
| Warrants | ||
| Derivative [Line Items] | ||
| Average Monthly Notional | 111 | 105 |
| Total return swaps | ||
| Derivative [Line Items] | ||
| Average Monthly Notional | 4,790 | 428 |
| Options | ||
| Derivative [Line Items] | ||
| Average Monthly Notional | $ 6,916 | $ 6,382 |