Annual report [Section 13 and 15(d), not S-K Item 405]

Schedule 12-14s - CONSOLIDATED SCHEDULE OF INVESTMENTS IN AND ADVANCES TO AFFILIATES - Summary of Schedule of Investment (Details)

v3.25.4
Schedule 12-14s - CONSOLIDATED SCHEDULE OF INVESTMENTS IN AND ADVANCES TO AFFILIATES - Summary of Schedule of Investment (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Investments in and Advances to Affiliates [Line Items]      
Investment owned, percent of net assets 0.00% [1] 0.03% [2]  
Investment cost $ 4,467,968 $ 3,708,877  
Investments, at fair value: $ 4,466,647 $ 3,659,978  
Control investments      
Investments in and Advances to Affiliates [Line Items]      
Investment owned, percent of net assets 5.19% 5.69%  
Investment cost $ 105,409 $ 104,916  
Investments, at fair value: $ 115,051 $ 113,179 $ 115,004
Control investments | Majority Owned Control Investments      
Investments in and Advances to Affiliates [Line Items]      
Investment owned, percent of net assets 4.77% 5.10%  
Investment cost $ 82,996 $ 82,503  
Investments, at fair value: $ 105,710 $ 101,522 103,487
Control investments | Other Control Investments      
Investments in and Advances to Affiliates [Line Items]      
Investment owned, percent of net assets 0.42% 0.59%  
Investment cost $ 22,413 $ 22,413  
Investments, at fair value: 9,341 11,657 11,517
Control investments | Coronado Aesthetics, LLC      
Investments in and Advances to Affiliates [Line Items]      
Investments, at fair value: 218 69 262
Control investments | Coronado Aesthetics, LLC | Majority Owned Control Investments | Preferred Stock      
Investments in and Advances to Affiliates [Line Items]      
Investments, at fair value: 218 69 260
Control investments | Coronado Aesthetics, LLC | Majority Owned Control Investments | Common Stock      
Investments in and Advances to Affiliates [Line Items]      
Investments, at fair value: 0 0 2
Control investments | Coronado Aesthetics, LLC | Medical Devices & Equipment | Majority Owned Control Investments      
Investments in and Advances to Affiliates [Line Items]      
Investment cost 250 250  
Investments, at fair value: $ 218 $ 69  
Control investments | Coronado Aesthetics, LLC | Medical Devices & Equipment | Majority Owned Control Investments | Common Stock      
Investments in and Advances to Affiliates [Line Items]      
Shares (in shares) 180,000 180,000  
Investment cost $ 0 $ 0  
Investments, at fair value: $ 0 $ 0  
Control investments | Coronado Aesthetics, LLC | Medical Devices & Equipment | Preferred Series A | Majority Owned Control Investments | Preferred Stock      
Investments in and Advances to Affiliates [Line Items]      
Shares (in shares) 5,000,000 5,000,000  
Investment cost $ 250 $ 250  
Investments, at fair value: 218 69  
Control investments | Gibraltar Acquisition LLC      
Investments in and Advances to Affiliates [Line Items]      
Investments, at fair value: 62,218 59,263 62,512
Control investments | Gibraltar Acquisition LLC | Majority Owned Control Investments | Unsecured Debt      
Investments in and Advances to Affiliates [Line Items]      
Investments, at fair value: 38,255 36,212 34,478
Control investments | Gibraltar Acquisition LLC | Majority Owned Control Investments | Member Units      
Investments in and Advances to Affiliates [Line Items]      
Investments, at fair value: 23,963 23,051 28,034
Control investments | Gibraltar Acquisition LLC | Diversified Financial Services | Majority Owned Control Investments      
Investments in and Advances to Affiliates [Line Items]      
Investment cost 70,711 70,218  
Investments, at fair value: $ 62,218 $ 59,263  
Control investments | Gibraltar Acquisition LLC | Diversified Financial Services | Majority Owned Control Investments | Unsecured Debt One      
Investments in and Advances to Affiliates [Line Items]      
Maturity Date 2029-07 2026-09  
Interest rate and floor, fixed 3.45% 3.45%  
Interest rate paid in kind 8.05% 8.05%  
Principal amount $ 28,805 $ 26,569  
Investment cost 28,412 26,337  
Investments, at fair value: $ 28,412 $ 26,337  
Control investments | Gibraltar Acquisition LLC | Diversified Financial Services | Majority Owned Control Investments | Unsecured Debt Two      
Investments in and Advances to Affiliates [Line Items]      
Maturity Date 2029-07 2026-09  
Interest rate and floor, fixed 11.95% 11.95%  
Principal amount $ 10,000 $ 10,000  
Investment cost 9,843 9,875  
Investments, at fair value: $ 9,843 $ 9,875  
Control investments | Gibraltar Acquisition LLC | Diversified Financial Services | Majority Owned Control Investments | Member Units      
Investments in and Advances to Affiliates [Line Items]      
Shares (in shares) 1 1  
Investment cost $ 32,456 $ 34,006  
Investments, at fair value: 23,963 23,051  
Control investments | Hercules Adviser LLC(3)      
Investments in and Advances to Affiliates [Line Items]      
Investments, at fair value: 43,274 42,190 40,713
Control investments | Hercules Adviser LLC(3) | Majority Owned Control Investments | Unsecured Debt      
Investments in and Advances to Affiliates [Line Items]      
Investments, at fair value: 0 12,000 12,000
Control investments | Hercules Adviser LLC(3) | Majority Owned Control Investments | Member Units      
Investments in and Advances to Affiliates [Line Items]      
Investments, at fair value: 43,274 30,190 28,713
Control investments | Hercules Adviser LLC(3) | Diversified Financial Services | Majority Owned Control Investments      
Investments in and Advances to Affiliates [Line Items]      
Investment cost 12,035 12,035  
Investments, at fair value: $ 43,274 $ 42,190  
Control investments | Hercules Adviser LLC(3) | Diversified Financial Services | Majority Owned Control Investments | Unsecured Debt      
Investments in and Advances to Affiliates [Line Items]      
Maturity Date   2025-06  
Interest rate and floor, fixed   5.00%  
Principal amount   $ 12,000  
Investment cost   12,000  
Investments, at fair value:   $ 12,000  
Control investments | Hercules Adviser LLC(3) | Diversified Financial Services | Majority Owned Control Investments | Member Units      
Investments in and Advances to Affiliates [Line Items]      
Shares (in shares) 1 1  
Investment cost $ 12,035 $ 35  
Investments, at fair value: 43,274 30,190  
Control investments | Tectura Corporation      
Investments in and Advances to Affiliates [Line Items]      
Investments, at fair value: 9,341 11,657 11,517
Control investments | Tectura Corporation | Other Control Investments | Senior Secured Debt      
Investments in and Advances to Affiliates [Line Items]      
Investments, at fair value: 8,091 8,027 8,250
Control investments | Tectura Corporation | Other Control Investments | Preferred Stock      
Investments in and Advances to Affiliates [Line Items]      
Investments, at fair value: 1,250 3,623 3,263
Control investments | Tectura Corporation | Other Control Investments | Common Stock      
Investments in and Advances to Affiliates [Line Items]      
Investments, at fair value: 0 7 $ 4
Control investments | Tectura Corporation | Consumer & Business Services | Other Control Investments      
Investments in and Advances to Affiliates [Line Items]      
Investment cost 22,413 22,413  
Investments, at fair value: $ 9,341 $ 11,657  
Control investments | Tectura Corporation | Consumer & Business Services | Other Control Investments | Senior Secured Debt      
Investments in and Advances to Affiliates [Line Items]      
Maturity Date 2027-01 2027-01  
Interest rate and floor, fixed 8.25%    
Interest rate paid in kind   8.25%  
Principal amount $ 8,250 $ 8,250  
Investment cost 8,250 8,250  
Investments, at fair value: $ 8,091 $ 8,027  
Control investments | Tectura Corporation | Consumer & Business Services | Other Control Investments | Common Stock      
Investments in and Advances to Affiliates [Line Items]      
Shares (in shares) 414,994,863 414,994,863  
Investment cost $ 900 $ 900  
Investments, at fair value: $ 0 $ 7  
Control investments | Tectura Corporation | Consumer & Business Services | Preferred Series BB | Other Control Investments | Preferred Stock      
Investments in and Advances to Affiliates [Line Items]      
Shares (in shares) 1,000,000 1,000,000  
Investment cost $ 0 $ 0  
Investments, at fair value: $ 0 $ 17  
Control investments | Tectura Corporation | Consumer & Business Services | Preferred Series C | Other Control Investments | Preferred Stock      
Investments in and Advances to Affiliates [Line Items]      
Shares (in shares) 3,235,298 3,235,298  
Investment cost $ 13,263 $ 13,263  
Investments, at fair value: $ 1,250 $ 3,606  
[1] Value as a percent of net assets. All amounts are stated in U.S. Dollars unless otherwise noted. The Company uses the Standard Industrial Code for classifying the industry grouping of its portfolio companies.
[2] Value as a percent of net assets. All amounts are stated in U.S. Dollars unless otherwise noted. The Company uses the Standard Industrial Code for classifying the industry grouping of its portfolio companies.