Fair Value Measurement and Disclosures - Summarize the Valuation of The Company's Investments and Cash and Cash Equivalents in The Fair Value Hierarchy Levels (Details) - USD ($) $ in Thousands |
Sep. 30, 2026 |
Dec. 31, 2025 |
| Investments, Fair Value Disclosure [Abstract] |
|
|
| Asset Backed Debt Securities |
$ 1,376,067
|
$ 943,100
|
| Equity & Other Investments |
625,067
|
634,605
|
| Total Investments, at fair value |
2,001,134
|
1,577,705
|
| Derivative Assets At Fair Value [Abstract] |
|
|
| Total Derivative Assets, at fair value |
46,882
|
46,042
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
17,253
|
4,986
|
| Total |
2,030,763
|
1,618,761
|
| Credit Default Swaps |
|
|
| Derivative Assets At Fair Value [Abstract] |
|
|
| Total Derivative Assets, at fair value |
40,603
|
44,653
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
363
|
30
|
| Interest Rate Swaps |
|
|
| Derivative Assets At Fair Value [Abstract] |
|
|
| Total Derivative Assets, at fair value |
|
1,389
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
16,870
|
|
| Swaptions |
|
|
| Derivative Assets At Fair Value [Abstract] |
|
|
| Total Derivative Assets, at fair value |
18
|
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
20
|
|
| Forward Currency Contracts |
|
|
| Derivative Assets At Fair Value [Abstract] |
|
|
| Total Derivative Assets, at fair value |
6,261
|
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
|
935
|
| Futures Contracts |
|
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
|
4,021
|
| Investments at NAV |
|
|
| Investments, Fair Value Disclosure [Abstract] |
|
|
| Equity & Other Investments |
442,663
|
381,089
|
| Total Investments, at fair value |
442,663
|
381,089
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total |
442,663
|
381,089
|
| Level I |
|
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
|
4,021
|
| Total |
|
(4,021)
|
| Level I | Futures Contracts |
|
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
|
4,021
|
| Level II |
|
|
| Investments, Fair Value Disclosure [Abstract] |
|
|
| Asset Backed Debt Securities |
142,784
|
171,415
|
| Equity & Other Investments |
1,500
|
1,850
|
| Total Investments, at fair value |
144,284
|
173,265
|
| Derivative Assets At Fair Value [Abstract] |
|
|
| Total Derivative Assets, at fair value |
6,279
|
1,389
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
17,253
|
965
|
| Total |
133,310
|
173,689
|
| Level II | Credit Default Swaps |
|
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
363
|
30
|
| Level II | Interest Rate Swaps |
|
|
| Derivative Assets At Fair Value [Abstract] |
|
|
| Total Derivative Assets, at fair value |
|
1,389
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
16,870
|
|
| Level II | Swaptions |
|
|
| Derivative Assets At Fair Value [Abstract] |
|
|
| Total Derivative Assets, at fair value |
18
|
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
20
|
|
| Level II | Forward Currency Contracts |
|
|
| Derivative Assets At Fair Value [Abstract] |
|
|
| Total Derivative Assets, at fair value |
6,261
|
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
|
935
|
| Level III |
|
|
| Investments, Fair Value Disclosure [Abstract] |
|
|
| Asset Backed Debt Securities |
1,233,283
|
771,685
|
| Equity & Other Investments |
180,904
|
251,666
|
| Total Investments, at fair value |
1,414,187
|
1,023,351
|
| Derivative Assets At Fair Value [Abstract] |
|
|
| Total Derivative Assets, at fair value |
40,603
|
44,653
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total |
1,454,790
|
1,068,004
|
| Level III | Credit Default Swaps |
|
|
| Derivative Assets At Fair Value [Abstract] |
|
|
| Total Derivative Assets, at fair value |
40,603
|
44,653
|
| Series I |
|
|
| Investments, Fair Value Disclosure [Abstract] |
|
|
| Asset Backed Debt Securities |
215,231
|
182,791
|
| Equity & Other Investments |
97,767
|
122,998
|
| Total Investments, at fair value |
312,998
|
305,789
|
| Derivative Assets At Fair Value [Abstract] |
|
|
| Total Derivative Assets, at fair value |
7,333
|
8,924
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
2,699
|
966
|
| Total |
317,632
|
313,747
|
| Series I | Credit Default Swaps |
|
|
| Derivative Assets At Fair Value [Abstract] |
|
|
| Total Derivative Assets, at fair value |
6,351
|
8,655
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
57
|
6
|
| Series I | Interest Rate Swaps |
|
|
| Derivative Assets At Fair Value [Abstract] |
|
|
| Total Derivative Assets, at fair value |
|
269
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
2,639
|
|
| Series I | Swaptions |
|
|
| Derivative Assets At Fair Value [Abstract] |
|
|
| Total Derivative Assets, at fair value |
3
|
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
3
|
|
| Series I | Forward Currency Contracts |
|
|
| Derivative Assets At Fair Value [Abstract] |
|
|
| Total Derivative Assets, at fair value |
979
|
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
|
181
|
| Series I | Futures Contracts |
|
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
|
779
|
| Series I | Investments at NAV |
|
|
| Investments, Fair Value Disclosure [Abstract] |
|
|
| Equity & Other Investments |
69,237
|
73,862
|
| Total Investments, at fair value |
69,237
|
73,862
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total |
69,237
|
73,862
|
| Series I | Level I |
|
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
|
779
|
| Total |
|
(779)
|
| Series I | Level I | Futures Contracts |
|
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
|
779
|
| Series I | Level II |
|
|
| Investments, Fair Value Disclosure [Abstract] |
|
|
| Asset Backed Debt Securities |
22,332
|
33,223
|
| Equity & Other Investments |
235
|
359
|
| Total Investments, at fair value |
22,567
|
33,582
|
| Derivative Assets At Fair Value [Abstract] |
|
|
| Total Derivative Assets, at fair value |
982
|
269
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
2,699
|
187
|
| Total |
20,850
|
33,664
|
| Series I | Level II | Credit Default Swaps |
|
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
57
|
6
|
| Series I | Level II | Interest Rate Swaps |
|
|
| Derivative Assets At Fair Value [Abstract] |
|
|
| Total Derivative Assets, at fair value |
|
269
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
2,639
|
|
| Series I | Level II | Swaptions |
|
|
| Derivative Assets At Fair Value [Abstract] |
|
|
| Total Derivative Assets, at fair value |
3
|
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
3
|
|
| Series I | Level II | Forward Currency Contracts |
|
|
| Derivative Assets At Fair Value [Abstract] |
|
|
| Total Derivative Assets, at fair value |
979
|
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
|
181
|
| Series I | Level III |
|
|
| Investments, Fair Value Disclosure [Abstract] |
|
|
| Asset Backed Debt Securities |
192,899
|
149,568
|
| Equity & Other Investments |
28,295
|
48,777
|
| Total Investments, at fair value |
221,194
|
198,345
|
| Derivative Assets At Fair Value [Abstract] |
|
|
| Total Derivative Assets, at fair value |
6,351
|
8,655
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total |
227,545
|
207,000
|
| Series I | Level III | Credit Default Swaps |
|
|
| Derivative Assets At Fair Value [Abstract] |
|
|
| Total Derivative Assets, at fair value |
6,351
|
8,655
|
| Series II |
|
|
| Investments, Fair Value Disclosure [Abstract] |
|
|
| Asset Backed Debt Securities |
1,160,836
|
760,309
|
| Equity & Other Investments |
527,300
|
511,607
|
| Total Investments, at fair value |
1,688,136
|
1,271,916
|
| Derivative Assets At Fair Value [Abstract] |
|
|
| Total Derivative Assets, at fair value |
39,549
|
37,118
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
14,554
|
4,020
|
| Total |
1,713,130
|
1,305,014
|
| Series II | Credit Default Swaps |
|
|
| Derivative Assets At Fair Value [Abstract] |
|
|
| Total Derivative Assets, at fair value |
34,252
|
35,998
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
306
|
24
|
| Series II | Interest Rate Swaps |
|
|
| Derivative Assets At Fair Value [Abstract] |
|
|
| Total Derivative Assets, at fair value |
|
1,120
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
14,231
|
|
| Series II | Swaptions |
|
|
| Derivative Assets At Fair Value [Abstract] |
|
|
| Total Derivative Assets, at fair value |
15
|
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
17
|
|
| Series II | Forward Currency Contracts |
|
|
| Derivative Assets At Fair Value [Abstract] |
|
|
| Total Derivative Assets, at fair value |
5,282
|
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
|
754
|
| Series II | Futures Contracts |
|
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
|
3,242
|
| Series II | Investments at NAV |
|
|
| Investments, Fair Value Disclosure [Abstract] |
|
|
| Equity & Other Investments |
373,426
|
307,227
|
| Total Investments, at fair value |
373,426
|
307,227
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total |
373,426
|
307,227
|
| Series II | Level I |
|
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
|
3,242
|
| Total |
|
(3,242)
|
| Series II | Level II |
|
|
| Investments, Fair Value Disclosure [Abstract] |
|
|
| Asset Backed Debt Securities |
120,452
|
138,192
|
| Equity & Other Investments |
1,265
|
1,491
|
| Total Investments, at fair value |
121,717
|
139,683
|
| Derivative Assets At Fair Value [Abstract] |
|
|
| Total Derivative Assets, at fair value |
5,297
|
1,120
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
14,554
|
778
|
| Total |
112,460
|
140,025
|
| Series II | Level II | Credit Default Swaps |
|
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
306
|
24
|
| Series II | Level II | Interest Rate Swaps |
|
|
| Derivative Assets At Fair Value [Abstract] |
|
|
| Total Derivative Assets, at fair value |
|
1,120
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
14,231
|
|
| Series II | Level II | Swaptions |
|
|
| Derivative Assets At Fair Value [Abstract] |
|
|
| Total Derivative Assets, at fair value |
15
|
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
17
|
|
| Series II | Level II | Forward Currency Contracts |
|
|
| Derivative Assets At Fair Value [Abstract] |
|
|
| Total Derivative Assets, at fair value |
5,282
|
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
|
754
|
| Series II | Level II | Futures Contracts |
|
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total Derivative Liabilities, at fair value |
|
3,242
|
| Series II | Level III |
|
|
| Investments, Fair Value Disclosure [Abstract] |
|
|
| Asset Backed Debt Securities |
1,040,384
|
622,117
|
| Equity & Other Investments |
152,609
|
202,889
|
| Total Investments, at fair value |
1,192,993
|
825,006
|
| Derivative Assets At Fair Value [Abstract] |
|
|
| Total Derivative Assets, at fair value |
34,252
|
35,998
|
| Derivative Liabilities at Fair Value [Abstract] |
|
|
| Total |
1,227,245
|
861,004
|
| Series II | Level III | Credit Default Swaps |
|
|
| Derivative Assets At Fair Value [Abstract] |
|
|
| Total Derivative Assets, at fair value |
$ 34,252
|
$ 35,998
|