v3.26.1
Fair Value of Investments - Schedule of Fair Value Hierarchy of Investments (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Assets, Fair Value Disclosure [Abstract]    
Cash $ 105,307 $ 143,140
Total Investments at Fair Value 5,056,913 [1],[2] 6,207,136 [3],[4]
Derivative assets 1,005 0
Derivative liabilities 0 429
First-lien senior secured debt investments    
Assets, Fair Value Disclosure [Abstract]    
Total Investments at Fair Value 4,406,237 5,484,795
Second-lien senior secured debt investments    
Assets, Fair Value Disclosure [Abstract]    
Total Investments at Fair Value 197,494 267,441
Unsecured debt investments    
Assets, Fair Value Disclosure [Abstract]    
Total Investments at Fair Value 63,452 66,531
Preferred equity investments    
Assets, Fair Value Disclosure [Abstract]    
Total Investments at Fair Value 164,403 173,230
Common equity investments    
Assets, Fair Value Disclosure [Abstract]    
Total Investments at Fair Value 113,200 101,617
Specialty finance equity investments    
Assets, Fair Value Disclosure [Abstract]    
Total Investments at Fair Value 97,207 89,389
Levels 1, Level 2, and Level 3    
Assets, Fair Value Disclosure [Abstract]    
Total Investments at Fair Value 4,927,710 6,094,131
Levels 1, Level 2, and Level 3 | First-lien senior secured debt investments    
Assets, Fair Value Disclosure [Abstract]    
Total Investments at Fair Value 4,406,237 5,484,795
Levels 1, Level 2, and Level 3 | Second-lien senior secured debt investments    
Assets, Fair Value Disclosure [Abstract]    
Total Investments at Fair Value 197,494 267,441
Levels 1, Level 2, and Level 3 | Unsecured debt investments    
Assets, Fair Value Disclosure [Abstract]    
Total Investments at Fair Value 63,452 66,531
Levels 1, Level 2, and Level 3 | Preferred equity investments    
Assets, Fair Value Disclosure [Abstract]    
Total Investments at Fair Value 164,403 173,230
Levels 1, Level 2, and Level 3 | Common equity investments    
Assets, Fair Value Disclosure [Abstract]    
Total Investments at Fair Value 94,060 99,511
Levels 1, Level 2, and Level 3 | Specialty finance equity investments    
Assets, Fair Value Disclosure [Abstract]    
Total Investments at Fair Value 2,064 2,623
Level 1    
Assets, Fair Value Disclosure [Abstract]    
Total Investments at Fair Value 12,910 0
Derivative assets 0 0
Derivative liabilities 0 0
Level 1 | First-lien senior secured debt investments    
Assets, Fair Value Disclosure [Abstract]    
Total Investments at Fair Value 0 0
Level 1 | Second-lien senior secured debt investments    
Assets, Fair Value Disclosure [Abstract]    
Total Investments at Fair Value 0 0
Level 1 | Unsecured debt investments    
Assets, Fair Value Disclosure [Abstract]    
Total Investments at Fair Value 0 0
Level 1 | Preferred equity investments    
Assets, Fair Value Disclosure [Abstract]    
Total Investments at Fair Value 0 0
Level 1 | Common equity investments    
Assets, Fair Value Disclosure [Abstract]    
Total Investments at Fair Value 12,910 0
Level 1 | Specialty finance equity investments    
Assets, Fair Value Disclosure [Abstract]    
Total Investments at Fair Value 0 0
Level 2    
Assets, Fair Value Disclosure [Abstract]    
Total Investments at Fair Value 421,645 799,006
Derivative assets 1,005 0
Derivative liabilities 0 429
Level 2 | First-lien senior secured debt investments    
Assets, Fair Value Disclosure [Abstract]    
Total Investments at Fair Value 348,713 681,894
Level 2 | Second-lien senior secured debt investments    
Assets, Fair Value Disclosure [Abstract]    
Total Investments at Fair Value 65,731 106,187
Level 2 | Unsecured debt investments    
Assets, Fair Value Disclosure [Abstract]    
Total Investments at Fair Value 0 0
Level 2 | Preferred equity investments    
Assets, Fair Value Disclosure [Abstract]    
Total Investments at Fair Value 0 0
Level 2 | Common equity investments    
Assets, Fair Value Disclosure [Abstract]    
Total Investments at Fair Value 7,201 10,925
Level 2 | Specialty finance equity investments    
Assets, Fair Value Disclosure [Abstract]    
Total Investments at Fair Value 0 0
Level 3    
Assets, Fair Value Disclosure [Abstract]    
Total Investments at Fair Value 4,493,155 5,295,125
Derivative assets 0 0
Derivative liabilities 0 0
Level 3 | First-lien senior secured debt investments    
Assets, Fair Value Disclosure [Abstract]    
Total Investments at Fair Value 4,057,524 4,802,901
Level 3 | Second-lien senior secured debt investments    
Assets, Fair Value Disclosure [Abstract]    
Total Investments at Fair Value 131,763 161,254
Level 3 | Unsecured debt investments    
Assets, Fair Value Disclosure [Abstract]    
Total Investments at Fair Value 63,452 66,531
Level 3 | Preferred equity investments    
Assets, Fair Value Disclosure [Abstract]    
Total Investments at Fair Value 164,403 173,230
Level 3 | Common equity investments    
Assets, Fair Value Disclosure [Abstract]    
Total Investments at Fair Value 73,949 88,586
Level 3 | Specialty finance equity investments    
Assets, Fair Value Disclosure [Abstract]    
Total Investments at Fair Value 2,064 2,623
Investments measured at NAV    
Assets, Fair Value Disclosure [Abstract]    
Investments measured at Net Asset Value ("NAV") 129,203 113,005
Cash | Levels 1, Level 2, and Level 3    
Assets, Fair Value Disclosure [Abstract]    
Cash 108,640 153,225
Cash | Level 1    
Assets, Fair Value Disclosure [Abstract]    
Cash 108,640 153,225
Cash | Level 2    
Assets, Fair Value Disclosure [Abstract]    
Cash 0 0
Cash | Level 3    
Assets, Fair Value Disclosure [Abstract]    
Cash $ 0 $ 0
[1] Certain portfolio company investments are subject to contractual restrictions on sales. Refer to footnote 30 for additional information on our restricted securities.
[2] Unless otherwise indicated, the Company’s portfolio companies are pledged as collateral supporting the amounts outstanding under the Company’s Amended and Restated Senior Secured Revolving Credit Agreement (the “Revolving Credit Facility”) and credit facilities to which certain of the Company’s subsidiaries are parties (the “SPV Asset Facilities” and the “CLOs”). See “Note 5 — Debt.”
[3] Certain portfolio company investments are subject to contractual restrictions on sales. Refer to footnote 30 for additional information on our restricted securities.
[4] Unless otherwise indicated, the Company’s portfolio companies are pledged as collateral supporting the amounts outstanding under the Company’s Amended and Restated Senior Secured Revolving Credit Agreement (the “Revolving Credit Facility”) and credit facilities to which certain of the Company’s subsidiaries are parties (the “SPV Asset Facilities” and the “CLOs”). See “Note 5 — Debt.”