Related Party Agreements and Transactions - Additional Information (Details)								3 Months Ended			6 Months Ended			48 Months Ended
	Feb. 24, 2025 USD ($)	Jan. 01, 2025 USD ($)	Nov. 02, 2023 USD ($)	Feb. 21, 2023 USD ($)	Jan. 01, 2023	Sep. 01, 2022 USD ($)	Jan. 16, 2019 USD ($)	Jun. 30, 2025 USD ($)		Jun. 30, 2024 USD ($)	Jun. 30, 2025 USD ($) Component		Jun. 30, 2024 USD ($)	Dec. 31, 2022	Dec. 31, 2024 USD ($)		Sep. 30, 2023 USD ($)
Related Party Transaction [Line Items]
Performance-based incentive fees								$ 3,849,000		$ 5,572,000	$ 10,282,000		$ 11,610,000
Management fees recognized								6,079,000		4,389,000	12,140,000		8,775,000
Management fees waived								0		0	0		0
Incentive fees waived								0		0	0		0
Management fees payable								6,079,000			6,079,000				$ 6,247,000
Performance-based incentive fees payable								3,849,000			3,849,000				5,336,000
Administrative services expense								1,010,000		826,000	2,026,000		2,049,000
Administrative service expense reimbursements								280,000		267,000	1,086,000		434,000
Investments at fair value								3,327,482,000	[1],[2],[3],[4]		3,327,482,000	[1],[2],[3],[4]			3,014,416,000	[5],[6]
Investment cost								$ 3,495,111,000	[1],[3],[7]		$ 3,495,111,000	[1],[3],[7]			$ 3,177,397,000	[8]
Co-Investment Holdings
Related Party Transaction [Line Items]
Investment owned, percent of fair value								85.00%			85.00%				80.00%
Investments at fair value								$ 2,816,183,000			$ 2,816,183,000				$ 2,417,102,000
Investment owned percent at cost								82.00%			82.00%				77.00%
Investment cost								$ 2,854,322,000			$ 2,854,322,000				$ 2,448,523,000
Administrative Service Expense | Merx Aviation Finance, LLC
Related Party Transaction [Line Items]
Administrative service expense reimbursements								249,000		75,000	1,017,000		149,000
Incentive Fee based on Income | Legacy Fee
Related Party Transaction [Line Items]
Catch-up amount multiplying percentage					2.1875%
Merx Administration Agreement | Interest Expense
Related Party Transaction [Line Items]
Administrative service expense reimbursements								30,000		192,000	69,000		285,000
Management services annual fee | MFIC Bethesda CLO 1 LLC Debt Securitization
Related Party Transaction [Line Items]
Management services annual fee			$ 100,000					0		0	0		41,000
Management services annual fee | MFIC Bethesda CLO 2 LLC Debt Securitization
Related Party Transaction [Line Items]
Management services annual fee	$ 100,000							0			$ 0
AIM | Base Management Fee
Related Party Transaction [Line Items]
Management fee annual rate percentage											1.75%
Management fee quarter rate percentage											0.4375%
AIM | Base Management Fee | Maximum
Related Party Transaction [Line Items]
Management fee annual rate percentage											1.50%
Management fee quarter rate percentage											0.375%
AIM | Performance-based Incentive Fee
Related Party Transaction [Line Items]
Number of components consists in incentive fee | Component											2
AIM | Incentive Fee based on Income
Related Party Transaction [Line Items]
Preferred return multiplying net asset percentage											1.75%
Preferred return multiplying net assets percentage					1.75%
Percentage of pre-incentive fee net investment income					100.00%
Pre-incentive fee net investment income description					The Company will pay the Investment Adviser an incentive fee with respect to our pre-incentive fee net investment income in each calendar quarter as follows:(1) no incentive fee in any calendar quarter in which our pre-incentive fee net investment income for the Trailing Twelve Quarters does not exceed the preferred return amount.(2) 100% of our pre-incentive fee net investment income for the Trailing Twelve Quarters, if any, that exceeds the preferred return amount but is less than or equal to the catch-up amount, which shall be the sum of (i) the product of 2.1875% multiplied by the Company's net asset value at the beginning of each applicable Legacy Fee Quarter included in the relevant Trailing Twelve Quarters and (ii) the product of 2.1212% multiplied by the Company's net asset value at the beginning of each applicable Current Fee Quarter included in the relevant Trailing Twelve Quarters.(3) for any quarter in which the Company’s pre-incentive fee net investment income for the Trailing Twelve Quarters exceeds the catch-up amount, the incentive fee shall equal 20.00% for each Legacy Fee Quarter and 17.50% otherwise of the amount of the Company’s pre-incentive fee net investment income for such Trailing Twelve Quarters, provided, however, that the incentive fee on income for any quarter shall not be greater than 20.00% or 17.50%, as applicable, of the amount of the Company's current quarter’s pre-incentive fee net investment income.
Cumulative pre-Incentive fee net return description														“Cumulative Pre-Incentive Fee Net Return” during the relevant trailing twelve quarters means (x) Pre-Incentive Fee Net Investment Income in respect of the trailing twelve quarters less (y) any Net Capital Loss, since April 1, 2018, in respect of the trailing twelve quarters. If, in any quarter, the Incentive Fee Cap was zero or a negative value, the Company shall pay no Incentive Fee on Income to the Investment Adviser in that quarter.
AIM | Incentive Fee based on Income | Legacy Fee
Related Party Transaction [Line Items]
Percentage of cumulative pre-Incentive fee net return					20.00%
AIM | Incentive Fee based on Income | Current Fee
Related Party Transaction [Line Items]
Catch-up amount multiplying percentage					2.1212%
Percentage of cumulative pre-Incentive fee net return					17.50%
AIM | Incentive Fee based on Cumulative Net Realized Gains
Related Party Transaction [Line Items]
Percentage of cumulative pre-Incentive fee net return											17.50%
Capital gains incentive fee								0		0	$ 0		0
AIM | Fee Offset Agreement
Related Party Transaction [Line Items]
Percentage of management fee revenue earned and incentive fee revenue offset							20.00%
Fee offset step down percentage							10.00%
Fee offset period							7 years
Fee offset period description											The fee offset was supposed to be in place for seven years, however the incentive fees realized by AIM and its affiliates after this seven-year period from applicable investments that were raised or made within the seven-year period would also be used to offset incentive fees payable to AIM by the Company.
Management fee offset								0		0	$ 0		0
AIM | Fee Offset Agreement | Minimum
Related Party Transaction [Line Items]
Aggregate capital of New Aircraft Funds and New Balance Sheet Investments							$ 3,000,000,000
AIA | Administration Agreement
Related Party Transaction [Line Items]
Administrative services expense								1,010,000		$ 826,000	2,026,000		$ 2,049,000
Other Liabilities								$ 0			$ 0				$ 0
Other Liability, Related Party [Extensible Enumeration]								us-gaap:RelatedPartyMember			us-gaap:RelatedPartyMember				us-gaap:RelatedPartyMember
Merx Aviation | First Lien Secured Revolver
Related Party Transaction [Line Items]
Commitment of Merx revolver																	$ 100,000,000
Balance of debt amount								$ 51,075,000			$ 51,075,000				$ 59,575,000
Merx Aviation | First Lien Secured Revolver | Common Equity
Related Party Transaction [Line Items]
Debt conversion, converted into common equity						$ 110,700,000
Merx Aviation | Fee Offset Agreement
Related Party Transaction [Line Items]
Agreement termination fee				$ 7,500,000
Merx and Apollo | Fee Offset Agreement
Related Party Transaction [Line Items]
Agreement termination fee				$ 7,500,000
Merx and AIA | Merx Administration Agreement
Related Party Transaction [Line Items]
Quarterly payment		$ 250,000

[1] Aggregate gross unrealized gain and loss for federal income tax purposes is $31,357 and $250,126, respectively. Net unrealized loss is $218,769 based on a tax cost of $3,546,251.

[2] Fair value is determined in good faith subject to the oversight of the board of directors of the Company (the “Board”) (See Note 2 to the consolidated financial statements).

[3] Substantially all securities are pledged as collateral to the Company's credit facilities (see Note 6 to the consolidated financial statements). For investments that are pledged to the Company's credit facilities, a single investment may be divided into parts that are individually pledged as collateral to separate credit facilities. As such, these securities are not available as collateral to our general creditors.

[4] The following shows the composition of the Company’s portfolio at fair value by control designation, investment type and industry as of June 30, 2025:   Industry   First Lien - Secured Debt     Second Lien - Secured Debt     Unsecured Debt     Structured Products and Other     Preferred Equity     Common Equity/Interests     Warrants     Total     % of Net Assets   Non-Controlled / Non-Affiliated Investments                                 Aerospace & Defense   $   6,781     $   —     $   —     $   —     $   —     $   90     $   —     $   6,871       0.50 % Air Freight & Logistics       24,344         —         —         —         —         —         —         24,344       1.77 % Automobile Components       18,107         —         —         —         —         1,540         —         19,647       1.43 % Beverages       5,347         —         —         —         100         —         —         5,447       0.40 % Biotechnology       29,057         —         —         —         333         129         135         29,654       2.16 % Building Products       20,918         —         —         —         —         —         —         20,918       1.52 % Chemicals       33,488         —         —         —         —         —         —         33,488       2.43 % Commercial Services & Supplies       132,511         —         —         —         1         429         —         132,941       9.66 % Communications Equipment       9,764         —         —         —         —         872         —         10,636       0.77 % Construction & Engineering       97,221         —         —         —         3,226         100         —         100,547       7.31 % Consumer Staples Distribution & Retail       38,809         —         —         —         —         —         —         38,809       2.82 % Containers & Packaging       45,079         —         —         —         —         —         —         45,079       3.28 % Diversified Consumer Services       192,562         —         —         —         —         1,125         —         193,687       14.08 % Diversified Telecommunication Services       1,044         —         1,413         —         —         —         —         2,457       0.18 % Electric Utilities       4,083         —         —         —         —         —         —         4,083       0.30 % Electrical Equipment       30,096         —         —         —         —         —         —         30,096       2.19 % Electronic Equipment, Instruments & Components       28,975         —         —         —         —         —         —         28,975       2.11 % Energy Equipment & Services       2,053         —         —         —         —         —         —         2,053       0.15 % Entertainment       26,518         —         —         —         —         —         —         26,518       1.93 % Financial Services       130,400         —         —         8,948         244         550         —         140,142       10.19 % Food Products       63,513         —         —         —         384         1,425         —         65,322       4.75 % Ground Transportation       88,295         —         —         —         —         —         —         88,295       6.42 % Health Care Equipment & Supplies       142,961         —         —         —         —         1,148         —         144,109       10.47 % Health Care Providers & Services       295,025         —         —         —         104         337         —         295,466       21.47 %     Industry   First Lien - Secured Debt     Second Lien - Secured Debt     Unsecured Debt     Structured Products and Other     Preferred Equity     Common Equity/Interests     Warrants     Total     % of Net Assets   Health Care Technology   $   39,668     $   75     $   —     $   —     $   —     $   —     $   —     $   39,743       2.89 % Hotels, Restaurants & Leisure       103,119         —         —         —         —         —         —         103,119       7.49 % Household Durables       30,898         —         —         —         —         —         —         30,898       2.25 % Independent Power & Renewable Electricity Producers       2,054         —         —         —         —         —         —         2,054       0.15 % Insurance       65,674         —         —         —         —         —         —         65,674       4.77 % Interactive Media & Services       32,616         —         —         —         —         —         —         32,616       2.37 % IT Services       78,545         —         —         —         —         54         —         78,599       5.71 % Leisure Products       70,286         —         —         —         211         104         —         70,601       5.13 % Life Sciences Tools & Services       41,146         —         —         —         —         —         —         41,146       2.99 % Machinery       65,369         —         —         —         —         —         —         65,369       4.75 % Media       67,148         —         —         —         515         766         —         68,429       4.97 % Multi-Utilities       17,660         —         —         —         —         48         —         17,708       1.29 % Oil, Gas & Consumable Fuels       15,120         —         —         —         —         —         —         15,120       1.10 % Paper & Forest Products       14,749         —         —         —         —         —         —         14,749       1.07 % Personal Care Products       68,964         —         —         —         —         186         —         69,150       5.02 % Pharmaceuticals       74,311         —         21         —         229         216         —         74,777       5.43 % Professional Services       85,700         —         —         —         —         1,756         —         87,456       6.36 % Real Estate Management & Development       6,930         —         —         —         —         —         —         6,930       0.50 % Semiconductors & Semiconductor Equipment       11,519         —         —         —         —         —         —         11,519       0.84 % Software       372,928         4,134         —         —         —         1,192         —         378,254       27.49 % Specialty Retail       24,929         —         1,949         —         —         —         —         26,878       1.95 % Technology Hardware, Storage & Peripherals       9,377         —         —         —         —         —         —         9,377       0.68 % Textiles, Apparel & Luxury Goods       24,514         —         —         —         —         87         —         24,601       1.79 % Trading Companies & Distributors       49,110         —         —         —         —         378         —         49,488       3.60 % Transportation Infrastructure       17,770         —         —         —         —         —         —         17,770       1.29 % Wireless Telecommunication Services       4,815         —         —         —         —         —         —         4,815       0.35 % Total Non-Controlled /
Non-Affiliated Investments   $   2,861,870     $   4,209     $   3,383     $   8,948     $   5,347     $   12,532     $   135     $   2,896,424       210.52 % % of Net Assets       208.00 %       0.31 %       0.25 %       0.65 %       0.39 %       0.91 %       0.01 %       210.52 %             Industry   First Lien - Secured Debt     Second Lien - Secured Debt     Unsecured Debt     Structured Products and Other     Preferred Equity     Common Equity/Interests     Warrants     Total     % of Net Assets   Non-Controlled / Affiliated Investments                             Chemicals   $   12,403     $   —     $   —     $   —     $   —     $   18,519     $   —     $   30,922       2.25 % Electronic Equipment, Instruments & Components       27,245         —         —         —         2,723         110         —         30,078       2.18 % Financial Services       —         —         —         21,599         —         —         —         21,599       1.57 % Ground Transportation       22,571         —         —         —         —         714         27         23,312       1.69 % Hotels, Restaurants & Leisure       3,955         —         —         —         —         2,445         —         6,400       0.47 % Leisure Products       —         —         —         —         —         228         —         228       0.02 % Total Non-Controlled / Affiliated Investments   $   66,174     $   —     $   —     $   21,599     $   2,723     $   22,016     $   27     $   112,539       8.18 % % of Net Assets       4.81 %       0.00 %       0.00 %       1.57 %       0.20 %       1.60 %       0.00 %       8.18 %       Controlled Investments                                                         Passenger Airlines   $   51,075     $   —     $   —     $   —     $   —     $   133,746     $   —     $   184,821       13.43 % Software       117,873         —         —         —         15,825         —         —         133,698       9.72 % Total Controlled Investments   $   168,948     $   —     $   —     $   —     $   15,825     $   133,746     $   —     $   318,519       23.15 % % of Net Assets       12.28 %       0.00 %       0.00 %       0.00 %       1.15 %       9.72 %       0.00 %       23.15 %       Total   $   3,096,992     $   4,209     $   3,383     $   30,547     $   23,895     $   168,294     $   162     $   3,327,482       241.85 % % of Net Assets       225.09 %       0.31 %       0.25 %       2.22 %       1.74 %       12.23 %       0.01 %       241.85 %             Industry Classification   Percentage of Total Investments (at Fair Value) as of June 30, 2025 Software   15.4% Health Care Providers & Services   8.8% Diversified Consumer Services   5.8% Passenger Airlines   5.6% Financial Services   4.9% Health Care Equipment & Supplies   4.3% Commercial Services & Supplies   4.0% Ground Transportation   3.4% Hotels, Restaurants & Leisure   3.3% Construction & Engineering   3.0% Professional Services   2.6% IT Services   2.4% Pharmaceuticals   2.2% Leisure Products   2.1% Personal Care Products   2.1% Media   2.1% Insurance   2.0% Machinery   2.0% Food Products   2.0% Chemicals   1.9% Electronic Equipment, Instruments & Components   1.8% Trading Companies & Distributors   1.5% Containers & Packaging   1.4% Life Sciences Tools & Services   1.2% Health Care Technology   1.2% Consumer Staples Distribution & Retail   1.2% Interactive Media & Services   1.0% Household Durables   0.9% Electrical Equipment   0.9% Biotechnology   0.9% Specialty Retail   0.8% Entertainment   0.8% Textiles, Apparel & Luxury Goods   0.7% Air Freight & Logistics   0.7% Building Products   0.6% Automobile Components   0.6% Transportation Infrastructure   0.5% Multi-Utilities   0.5% Oil, Gas & Consumable Fuels   0.5% Paper & Forest Products   0.4% Semiconductors & Semiconductor Equipment   0.3% Communications Equipment   0.3% Technology Hardware, Storage & Peripherals   0.3% Real Estate Management & Development   0.2% Aerospace & Defense   0.2% Beverages   0.2% Wireless Telecommunication Services   0.1% Electric Utilities   0.1% Diversified Telecommunication Services   0.1% Independent Power & Renewable Electricity Producers   0.1% Energy Equipment & Services   0.1% Total Investments   100.0%
Effective March 31, 2025, the Company transitioned its industry classification methodology from Moody’s to the Global Industry Classification Standard (GICS).

[5] Fair value is determined in good faith subject to the oversight of the Board of Directors of the Company (See Note 2 to the consolidated financial statements).

[6] The following shows the composition of the Company’s portfolio at fair value by control designation, investment type and industry as of December 31, 2024: Industry   First Lien - Secured Debt     Second Lien - Secured Debt     Unsecured Debt     Structured Products and Other     Preferred Equity     Common Equity/Interests     Warrants     Total     % of Net Assets   Non-Controlled / Non-Affiliated Investments                                 Advertising, Printing & Publishing   $   62,003     $   —     $   —     $   —     $   491     $   669     $   —     $   63,163       4.50 % Automotive       39,298         —         —         —         —         1,080         —         40,378       2.87 % Aviation and Consumer Transport       29,489         —         —         —         —         —         —         29,489       2.10 % Beverage, Food & Tobacco       89,933         —         —         —         229         3,575         —         93,737       6.67 % Business Services       303,544         5,627         —         —         1         3,166         —         312,338       22.24 % Chemicals, Plastics & Rubber       69,680         —         —         —         —         —         —         69,680       4.96 % Construction & Building       102,895         —         —         —         —         —         —         102,895       7.33 % Consumer Goods – Durable       11,063         —         —         —         —         119         —         11,182       0.80 % Consumer Goods – Non-durable       153,402         —         —         —         246         442         —         154,090       10.96 % Consumer Services       138,782         —         —         —         —         —         —         138,782       9.88 % Containers, Packaging & Glass       21,601         —         —         —         —         —         —         21,601       1.54 % Diversified Investment Vehicles, Banking, Finance, Real Estate       148,108         —         —         15,023         193         565         —         163,889       11.67 % Energy – Electricity       1,997         —         —         —         —         —         —         1,997       0.14 % Environmental Industries       2,036         —         —         —         —         —         —         2,036       0.14 % Healthcare & Pharmaceuticals       472,374         —         21         —         532         2,703         136         475,766       33.87 % High Tech Industries       465,671         6,538         —         —         250         2,891         —         475,350       33.84 % Hotel, Gaming, Leisure, Restaurants       44,113         —         —         —         —         —         —         44,113       3.14 % Insurance       49,055         —         —         —         —         —         —         49,055       3.49 % Manufacturing, Capital Equipment       75,279         —         —         —         3,405         418         —         79,102       5.63 % Media – Diversified & Production       13,442         —         —         —         —         —         —         13,442       0.96 % Retail       15,506         —         1,937         —         —         —         —         17,443       1.24 % Telecommunications       19,124         5,633         1,448         —         —         —         —         26,205       1.87 % Transportation – Cargo, Distribution       105,150         —         —         —         —         —         —         105,150       7.49 % Utilities – Electric       11,612         —         —         —         —         —         —         11,612       0.83 % Wholesale       101,936         —         96         —         28         774         —         102,834       7.32 % Total Non-Controlled /
Non-Affiliated Investments   $   2,547,093     $   17,798     $   3,502     $   15,023     $   5,375     $   16,402     $   136     $   2,605,329       185.48 % % of Net Assets       181.33 %       1.27 %       0.25 %       1.07 %       0.38 %       1.17 %       0.01 %       185.48 %         Industry   First Lien - Secured Debt     Second Lien - Secured Debt     Unsecured Debt     Structured Products and Other     Preferred Equity     Common Equity/Interests     Warrants     Total     % of Net Assets   Non-Controlled / Affiliated Investments                             Aviation and Consumer Transport   $   19,939     $   —     $   —     $   —     $   —     $   373     $   —     $   20,312       1.45 % Chemicals, Plastics & Rubber       12,459         —         —         —         —         18,933         —         31,392       2.23 % Consumer Goods – Durable       —         —         —         —         —         202         —         202       0.01 % Consumer Services       —         —         —         —         —         —         —         —       0.00 % Diversified Investment Vehicles, Banking, Finance, Real Estate       —         —         —         26,102         —         —         —         26,102       1.86 % Hotel, Gaming, Leisure, Restaurants       4,183         —         —         —         —         2,143         —         6,326       0.45 % Total Non-Controlled / Affiliated Investments   $   36,581     $   —     $   —     $   26,102     $   —     $   21,651     $   —     $   84,334       6.00 % % of Net Assets       2.60 %       0.00 %       0.00 %       1.86 %       0.00 %       1.54 %       0.00 %       6.00 %       Controlled Investments                                                         Aviation and Consumer Transport   $   59,576     $   —     $   —     $   —     $   —     $   123,815     $   —     $   183,391       13.06 % High Tech Industries       121,906         —         —         —         19,456         —         —         141,362       10.06 % Total Controlled Investments   $   181,482     $   —     $   —     $   —     $   19,456     $   123,815     $   —     $   324,753       23.12 % % of Net Assets       12.92 %       0.00 %       0.00 %       0.00 %       1.39 %       8.81 %       0.00 %       23.12 %       Total   $   2,765,156     $   17,798     $   3,502     $   41,125     $   24,831     $   161,868     $   136     $   3,014,416       214.60 % % of Net Assets       196.85 %       1.27 %       0.25 %       2.93 %       1.77 %       11.52 %       0.01 %       214.60 %           Industry Classification   Percentage of Total Investments (at Fair Value) as of December 31, 2024 High Tech Industries   20.5% Healthcare & Pharmaceuticals   15.8% Business Services   10.3% Aviation and Consumer Transport   7.7% Diversified Investment Vehicles, Banking, Finance, Real Estate   6.3% Consumer Goods – Non-durable   5.1% Consumer Services   4.6% Transportation – Cargo, Distribution   3.5% Construction & Building   3.4% Wholesale   3.4% Chemicals, Plastics & Rubber   3.4% Beverage, Food & Tobacco   3.1% Manufacturing, Capital Equipment   2.6% Advertising, Printing & Publishing   2.1% Hotel, Gaming, Leisure, Restaurants   1.7% Insurance   1.6% Automotive   1.3% Telecommunications   0.9% Containers, Packaging & Glass   0.7% Retail   0.6% Media – Diversified & Production   0.4% Utilities – Electric   0.4% Consumer Goods – Durable   0.4% Environmental Industries   0.1% Energy – Electricity   0.1% Total Investments   100.0%

[7] The following shows the composition of the Company’s portfolio at cost by control designation, investment type and industry as of June 30, 2025:   Industry   First Lien - Secured Debt     Second Lien - Secured Debt     Unsecured Debt     Structured Products and Other     Preferred Equity     Common Equity/Interests     Warrants     Total   Non-Controlled / Non-Affiliated Investments                                                           Aerospace & Defense   $   6,795     $   —     $   —     $   —     $   —     $   99     $   —     $   6,894   Air Freight & Logistics       24,140         —         —         —         —         —         —         24,140   Automobile Components       18,430         —         —         —         —         24,206         —         42,636   Beverages       5,352         —         —         —         100         —         —         5,452   Biotechnology       28,836         —         —         —         333         —         389         29,558   Building Products       20,868         —         —         —         —         —         —         20,868   Chemicals       33,199         —         —         —         —         —         —         33,199   Commercial Services & Supplies       132,198         —         —         —         11         12,644         576         145,429   Communications Equipment       9,748         —         —         —         —         584         —         10,332   Construction & Engineering       97,842         —         —         —         4,348         300         —         102,490   Consumer Staples Distribution & Retail       39,050         —         —         —         —         169         —         39,219   Containers & Packaging       45,143         —         —         —         —         —         —         45,143   Diversified Consumer Services       192,795         —         —         —         —         632         —         193,427   Diversified Telecommunication Services       1,021         —         1,444         —         —         —         —         2,465   Electric Utilities       4,087         —         —         —         —         —         —         4,087   Electrical Equipment       29,922         —         —         —         —         —         —         29,922   Electronic Equipment, Instruments & Components       29,465         —         —         —         —         —         —         29,465   Energy Equipment & Services       2,045         —         —         —         —         —         —         2,045   Entertainment       26,510         —         —         —         —         —         —         26,510   Financial Services       131,027         —         —         9,016         534         17,121         —         157,698   Food Products       63,743         —         —         —         448         1,275         —         65,466   Ground Transportation       88,637         —         —         —         —         —         —         88,637   Health Care Equipment & Supplies       143,389         —         —         —         —         1,426         —         144,815   Health Care Providers & Services       304,666         —         —         —         75         318         —         305,059   Health Care Technology       39,527         85         —         —         —         —         —         39,612   Hotels, Restaurants & Leisure       104,894         —         —         —         —         —         —         104,894   Household Durables       30,815         —         —         —         —         —         —         30,815   Independent Power & Renewable Electricity Producers       7,231         —         —         —         5,623         4         —         12,858   Insurance       65,594         —         —         —         —         —         —         65,594   Interactive Media & Services       32,096         7,703         —         —         —         —         —         39,799  

  Industry   First Lien - Secured Debt     Second Lien - Secured Debt     Unsecured Debt     Structured Products and Other     Preferred Equity     Common Equity/Interests     Warrants     Total   IT Services   $   86,318     $   —     $   —     $   —     $   —     $   77     $   —     $   86,395   Leisure Products       70,957         —         —         —         492         93         —         71,542   Life Sciences Tools & Services       41,466         —         —         —         —         —         —         41,466   Machinery       65,317         —         —         —         —         —         —         65,317   Media       67,798         —         —         —         473         610         —         68,881   Multi-Utilities       19,276         —         —         —         —         42         —         19,318   Oil, Gas & Consumable Fuels       15,125         —         —         —         —         —         —         15,125   Paper & Forest Products       14,747         —         —         —         —         —         —         14,747   Personal Care Products       68,599         —         —         —         —         100         —         68,699   Pharmaceuticals       74,421         —         21         —         217         211         —         74,870   Professional Services       86,003         —         —         —         —         46         —         86,049   Real Estate Management & Development       6,769         —         —         —         —         —         —         6,769   Semiconductors & Semiconductor Equipment       10,833         —         —         —         —         —         —         10,833   Software       378,014         4,218         —         —         —         669         —         382,901   Specialty Retail       24,658         —         1,963         —         —         —         —         26,621   Technology Hardware, Storage & Peripherals       9,374         —         —         —         —         —         —         9,374   Textiles, Apparel & Luxury Goods       24,707         —         —         —         —         575         —         25,282   Trading Companies & Distributors       50,188         —         —         —         —         957         —         51,145   Transportation Infrastructure       17,671         —         —         —         —         —         —         17,671   Wireless Telecommunication Services       6,156         —         —         —         —         —         —         6,156   Total Non-Controlled /
Non-Affiliated Investments   $   2,897,462     $   12,006     $   3,428     $   9,016     $   12,654     $   62,158     $   965     $   2,997,689   Non-Controlled / Affiliated Investments                                                           Chemicals   $   12,500     $   —     $   —     $   —     $   —     $   56,505     $   —     $   69,005   Electronic Equipment, Instruments & Components       32,331         —         —         —         1,713         —         —         34,044   Financial Services       —         —         —         35,597         —         —         —         35,597   Ground Transportation       22,348         —         —         —         —         722         —         23,070   Hotels, Restaurants & Leisure       8,739         —         —         —         —         4,740         —         13,479   Leisure Products       —         —         —         —         —         1,000         —         1,000   Total Non-Controlled / Affiliated Investments   $   75,918     $   —     $   —     $   35,597     $   1,713     $   62,967     $   —     $   176,195   Controlled Investments                                                           Passenger Airlines   $   51,075     $   —     $   —     $   —     $   —     $   146,500     $   —     $   197,575   Software       117,652         —         —         —         6,000         —         —         123,652   Total Controlled Investments   $   168,727     $   —     $   —     $   —     $   6,000     $   146,500     $   —     $   321,227   Total   $   3,142,107     $   12,006     $   3,428     $   44,613     $   20,367     $   271,625     $   965     $   3,495,111    

[8] The following shows the composition of the Company’s portfolio at cost by control designation, investment type and industry as of December 31, 2024: Industry   First Lien - Secured Debt     Second Lien - Secured Debt     Unsecured Debt     Structured Products and Other     Preferred Equity     Common Equity/Interests     Warrants     Total   Non-Controlled / Non-Affiliated Investments                                                           Advertising, Printing & Publishing   $   62,883     $   —     $   —     $   —     $   473     $   510     $   —     $   63,866   Automotive       39,271         —         —         —         —         24,068         —         63,339   Aviation and Consumer Transport       29,202         —         —         —         —         —         —         29,202   Beverage, Food & Tobacco       90,488         —         —         —         448         1,534         —         92,470   Business Services       304,602         5,636         —         —         11         2,929         —         313,178   Chemicals, Plastics & Rubber       69,239         —         —         —         —         —         —         69,239   Construction & Building       109,436         —         —         —         —         —         —         109,436   Consumer Goods – Durable       11,027         —         —         —         —         108         —         11,135   Consumer Goods – Non-durable       153,567         —         —         —         493         2,233         —         156,293   Consumer Services       139,730         —         —         —         —         —         —         139,730   Containers, Packaging & Glass       21,660         —         —         —         —         —         —         21,660   Diversified Investment Vehicles, Banking, Finance, Real Estate       148,364         —         —         15,028         534         17,146         —         181,072   Energy – Electricity       7,231         —         —         —         5,623         4         —         12,858   Environmental Industries       2,030         —         —         —         —         —         —         2,030   Healthcare & Pharmaceuticals       476,831         —         21         —         499         291         389         478,031   High Tech Industries       470,416         7,203         —         —         250         1,684         —         479,553   Hotel, Gaming, Leisure, Restaurants       44,552         —         —         —         —         —         —         44,552   Insurance       49,245         —         —         —         —         —         —         49,245   Manufacturing, Capital Equipment       80,998         —         —         —         1,713         250         —         82,961   Media – Diversified & Production       13,425         —         —         —         —         —         —         13,425   Retail       15,372         —         1,958         —         —         —         —         17,330   Telecommunications       18,965         10,615         1,408         —         —         —         —         30,988   Transportation – Cargo, Distribution       105,350         —         —         —         —         —         —         105,350   Utilities – Electric       14,688         —         —         —         —         —         —         14,688   Wholesale       102,812         —         2,672         —         25         13,241         576         119,326   Total Non-Controlled /
Non-Affiliated Investments   $   2,581,384     $   23,454     $   6,059     $   15,028     $   10,069     $   63,998     $   965     $   2,700,957   Non-Controlled / Affiliated Investments                                                           Aviation and Consumer Transport   $   19,676     $   —     $   —     $   —     $   —     $   366     $   —     $   20,042   Chemicals, Plastics & Rubber       12,501         —         —         —         —         56,505         —         69,006   Consumer Goods – Durable       —         —         —         —         —         1,000         —         1,000   Consumer Services       —         —         —         —         —         —         —         —   Diversified Investment Vehicles, Banking, Finance, Real Estate       —         —         —         38,643         —         —         —         38,643   Hotel, Gaming, Leisure, Restaurants       9,255         —         —         —         —         4,740         —         13,995   Total Non-Controlled / Affiliated Investments   $   41,432     $   —     $   —     $   38,643     $   —     $   62,611     $   —     $   142,686       Industry   First Lien - Secured Debt     Second Lien - Secured Debt     Unsecured Debt     Structured Products and Other     Preferred Equity     Common Equity/Interests     Warrants     Total   Controlled Investments                                                           Aviation and Consumer Transport   $   59,575     $   —     $   —     $   —     $   —     $   146,500     $   —     $   206,075   High Tech Industries       121,679         —         —         —         6,000         —         —         127,679   Total Controlled Investments   $   181,254     $   —     $   —     $   —     $   6,000     $   146,500     $   —     $   333,754   Total   $   2,804,070     $   23,454     $   6,059     $   53,671     $   16,069     $   273,109     $   965     $   3,177,397