v3.26.1
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
Jun. 30, 2026
Dec. 31, 2025
Investments, Fair Value Disclosure [Abstract]    
Asset Backed Debt Securities $ 1,307,296 $ 943,100
Equity & Other Investments 630,636 634,605
Total Investments, at fair value 1,937,932 1,577,705
Derivative Assets At Fair Value [Abstract]    
Total Derivative Assets, at fair value 55,906 46,042
Derivative Liabilities at Fair Value [Abstract]    
Total Derivative Liabilities, at fair value 6,332 4,986
Total 1,987,506 1,618,761
Credit Default Swaps    
Derivative Assets At Fair Value [Abstract]    
Total Derivative Assets, at fair value 51,632 44,653
Derivative Liabilities at Fair Value [Abstract]    
Total Derivative Liabilities, at fair value 37 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 6,295  
Swaptions    
Derivative Assets At Fair Value [Abstract]    
Total Derivative Assets, at fair value 258  
Forward Currency Contracts    
Derivative Assets At Fair Value [Abstract]    
Total Derivative Assets, at fair value 4,016  
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 429,518 381,089
Total Investments, at fair value 429,518 381,089
Derivative Liabilities at Fair Value [Abstract]    
Total 429,518 381,089
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 77,785 171,415
Equity & Other Investments 1,575 1,850
Total Investments, at fair value 79,360 173,265
Derivative Assets At Fair Value [Abstract]    
Total Derivative Assets, at fair value 4,274 1,389
Derivative Liabilities at Fair Value [Abstract]    
Total Derivative Liabilities, at fair value 6,332 965
Total 77,302 173,689
Level II | Credit Default Swaps    
Derivative Liabilities at Fair Value [Abstract]    
Total Derivative Liabilities, at fair value 37 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 6,295  
Level II | Swaptions    
Derivative Assets At Fair Value [Abstract]    
Total Derivative Assets, at fair value 258  
Level II | Forward Currency Contracts    
Derivative Assets At Fair Value [Abstract]    
Total Derivative Assets, at fair value 4,016  
Derivative Liabilities at Fair Value [Abstract]    
Total Derivative Liabilities, at fair value   935
Level III    
Investments, Fair Value Disclosure [Abstract]    
Asset Backed Debt Securities 1,229,511 771,685
Equity & Other Investments 199,543 251,666
Total Investments, at fair value 1,429,054 1,023,351
Derivative Assets At Fair Value [Abstract]    
Total Derivative Assets, at fair value 51,632 44,653
Derivative Liabilities at Fair Value [Abstract]    
Total 1,480,686 1,068,004
Level III | Credit Default Swaps    
Derivative Assets At Fair Value [Abstract]    
Total Derivative Assets, at fair value 51,632 44,653
Series I    
Investments, Fair Value Disclosure [Abstract]    
Asset Backed Debt Securities 210,034 182,791
Equity & Other Investments 101,320 122,998
Total Investments, at fair value 311,354 305,789
Derivative Assets At Fair Value [Abstract]    
Total Derivative Assets, at fair value 8,982 8,924
Derivative Liabilities at Fair Value [Abstract]    
Total Derivative Liabilities, at fair value 1,017 966
Total 319,319 313,747
Series I | Credit Default Swaps    
Derivative Assets At Fair Value [Abstract]    
Total Derivative Assets, at fair value 8,296 8,655
Derivative Liabilities at Fair Value [Abstract]    
Total Derivative Liabilities, at fair value 6 6
Series I | Interest Rate Swaps    
Derivative Assets At Fair Value [Abstract]    
Total Derivative Assets, at fair value 41 269
Derivative Liabilities at Fair Value [Abstract]    
Total Derivative Liabilities, at fair value 1,011  
Series I | Forward Currency Contracts    
Derivative Assets At Fair Value [Abstract]    
Total Derivative Assets, at fair value 645  
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 69,008 73,862
Total Investments, at fair value 69,008 73,862
Derivative Liabilities at Fair Value [Abstract]    
Total 69,008 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 12,497 33,223
Equity & Other Investments 253 359
Total Investments, at fair value 12,750 33,582
Derivative Assets At Fair Value [Abstract]    
Total Derivative Assets, at fair value 686 269
Derivative Liabilities at Fair Value [Abstract]    
Total Derivative Liabilities, at fair value 1,017 187
Total 12,419 33,664
Series I | Level II | Credit Default Swaps    
Derivative Liabilities at Fair Value [Abstract]    
Total Derivative Liabilities, at fair value 6 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 1,011  
Series I | Level II | Swaptions    
Derivative Assets At Fair Value [Abstract]    
Total Derivative Assets, at fair value 41  
Series I | Level II | Forward Currency Contracts    
Derivative Assets At Fair Value [Abstract]    
Total Derivative Assets, at fair value 645  
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 197,537 149,568
Equity & Other Investments 32,059 48,777
Total Investments, at fair value 229,596 198,345
Derivative Assets At Fair Value [Abstract]    
Total Derivative Assets, at fair value 8,296 8,655
Derivative Liabilities at Fair Value [Abstract]    
Total 237,892 207,000
Series I | Level III | Credit Default Swaps    
Derivative Assets At Fair Value [Abstract]    
Total Derivative Assets, at fair value 8,296 8,655
Series II    
Investments, Fair Value Disclosure [Abstract]    
Asset Backed Debt Securities 1,097,262 760,309
Equity & Other Investments 529,316 511,607
Total Investments, at fair value 1,626,578 1,271,916
Derivative Assets At Fair Value [Abstract]    
Total Derivative Assets, at fair value 46,924 37,118
Derivative Liabilities at Fair Value [Abstract]    
Total Derivative Liabilities, at fair value 5,315 4,020
Total 1,668,187 1,305,014
Series II | Credit Default Swaps    
Derivative Assets At Fair Value [Abstract]    
Total Derivative Assets, at fair value 43,336 35,998
Derivative Liabilities at Fair Value [Abstract]    
Total Derivative Liabilities, at fair value 31 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 5,284  
Series II | Swaptions    
Derivative Assets At Fair Value [Abstract]    
Total Derivative Assets, at fair value 217  
Series II | Forward Currency Contracts    
Derivative Assets At Fair Value [Abstract]    
Total Derivative Assets, at fair value 3,371  
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 360,510 307,227
Total Investments, at fair value 360,510 307,227
Derivative Liabilities at Fair Value [Abstract]    
Total 360,510  
Series II | Level I    
Derivative Liabilities at Fair Value [Abstract]    
Total Derivative Liabilities, at fair value   3,242
Total   (3,242)
Series II | Level I | Futures Contracts    
Derivative Liabilities at Fair Value [Abstract]    
Total Derivative Liabilities, at fair value   3,242
Series II | Level II    
Investments, Fair Value Disclosure [Abstract]    
Asset Backed Debt Securities 65,288 138,192
Equity & Other Investments 1,322 1,491
Total Investments, at fair value 66,610 139,683
Derivative Assets At Fair Value [Abstract]    
Total Derivative Assets, at fair value 3,588 1,120
Derivative Liabilities at Fair Value [Abstract]    
Total Derivative Liabilities, at fair value 5,315 778
Total 64,883 140,025
Series II | Level II | Credit Default Swaps    
Derivative Liabilities at Fair Value [Abstract]    
Total Derivative Liabilities, at fair value 31 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 5,284  
Series II | Level II | Swaptions    
Derivative Assets At Fair Value [Abstract]    
Total Derivative Assets, at fair value 217  
Series II | Level II | Forward Currency Contracts    
Derivative Assets At Fair Value [Abstract]    
Total Derivative Assets, at fair value 3,371  
Derivative Liabilities at Fair Value [Abstract]    
Total Derivative Liabilities, at fair value   754
Series II | Level III    
Investments, Fair Value Disclosure [Abstract]    
Asset Backed Debt Securities 1,031,974 622,117
Equity & Other Investments 167,484 202,889
Total Investments, at fair value 1,199,458 825,006
Derivative Assets At Fair Value [Abstract]    
Total Derivative Assets, at fair value 43,336 35,998
Derivative Liabilities at Fair Value [Abstract]    
Total 1,242,794 861,004
Series II | Level III | Credit Default Swaps    
Derivative Assets At Fair Value [Abstract]    
Total Derivative Assets, at fair value $ 43,336 $ 35,998