v3.25.2
Condensed Consolidated Schedules of Investments - USD ($)
$ in Thousands
 6 Months Ended 12 Months Ended
Jun. 30, 2025
Dec. 31, 2024
Schedule of Investments [Line Items]    
Cost $ 897,614  
Investments and Derivative Liabilities 938,784  
Cost 897,614 $ 593,650
Fair Value 940,619 631,905
Derivative Liability $ (1,835) $ 0
Fair Value as a Percentage of Net Assets 70.40% [1] 67.10% [2]
Investments and Derivative Liabilities, Fair Value as a Percentage of Net Assets [1] 70.30%  
Series I Foreign Exchange Forward [Member]    
Schedule of Investments [Line Items]    
Derivative Liability $ (520)  
Derivative Liabilities, Fair Value as a Percentage of Net Assets [1] (0.10%)  
Series II Foreign Exchange Forward [Member]    
Schedule of Investments [Line Items]    
Derivative Liability $ (1,315)  
Derivative Liabilities, Fair Value as a Percentage of Net Assets [1] (0.10%)  
Series I Partnership Investment Vehicle [Member]    
Schedule of Investments [Line Items]    
Cost $ 192,330 [3] $ 80,518 [4]
Fair Value $ 203,353 [3] $ 85,694 [4]
Fair Value as a Percentage of Net Assets 51.50% [1],[3] 34.70% [2],[4]
Series I Investment Loan [Member]    
Schedule of Investments [Line Items]    
Cost $ 75,884 $ 75,893
Fair Value $ 75,961 $ 79,882
Fair Value as a Percentage of Net Assets 19.30% [1] 32.30% [2]
Series I Investment Warrants [Member]    
Schedule of Investments [Line Items]    
Cost   $ 422
Fair Value   $ 1,076
Fair Value as a Percentage of Net Assets [2]   0.40%
Series I Investment [Member]    
Schedule of Investments [Line Items]    
Cost $ 268,214 $ 156,833
Fair Value $ 279,314 $ 166,652
Fair Value as a Percentage of Net Assets 70.80% [1] 67.40% [2]
Series I Investment and Derivative Liabilities [Member]    
Schedule of Investments [Line Items]    
Cost $ 268,214  
Investments and Derivative Liabilities $ 278,794  
Investments and Derivative Liabilities, Fair Value as a Percentage of Net Assets [1] 70.70%  
Series II Partnership Investment Vehicle [Member]    
Schedule of Investments [Line Items]    
Cost $ 451,848 [3] $ 224,145 [4]
Fair Value $ 481,458 [3] $ 239,239 [4]
Fair Value as a Percentage of Net Assets 51.20% [1],[3] 34.50% [2],[4]
Series II Investment Loan [Member]    
Schedule of Investments [Line Items]    
Cost $ 177,552 $ 211,570
Fair Value $ 179,847 $ 223,010
Fair Value as a Percentage of Net Assets 19.20% [1] 32.20% [2]
Series II Investment Warrants [Member]    
Schedule of Investments [Line Items]    
Cost   $ 1,102
Fair Value   $ 3,004
Fair Value as a Percentage of Net Assets [2]   0.40%
Series II Investment [Member]    
Schedule of Investments [Line Items]    
Cost $ 629,400 $ 436,817
Fair Value $ 661,305 $ 465,253
Fair Value as a Percentage of Net Assets 70.40% [1] 67.10% [2]
Series II Investment and Derivative Liabilities [Member]    
Schedule of Investments [Line Items]    
Cost $ 629,400  
Investments and Derivative Liabilities $ 659,990  
Investments and Derivative Liabilities, Fair Value as a Percentage of Net Assets [1] 70.30%  
Partnership Investment Vehicle [Member]    
Schedule of Investments [Line Items]    
Cost $ 644,178 [3] $ 304,663 [4]
Fair Value $ 684,811 [3] $ 324,933 [4]
Fair Value as a Percentage of Net Assets 51.20% [1],[3] 34.50% [2],[4]
Investment Loan [Member]    
Schedule of Investments [Line Items]    
Cost $ 253,436 $ 287,463
Fair Value $ 255,808 $ 302,892
Fair Value as a Percentage of Net Assets 19.20% [1] 32.20% [2]
Investment Warrants [Member]    
Schedule of Investments [Line Items]    
Cost   $ 1,524
Fair Value   $ 4,080
Fair Value as a Percentage of Net Assets [2]   0.40%
Investment, Identifier [Axis]: Series I Derivative Liabilities | Foreign Currency Contracts | Country United States | Industry/Type | USD/CAD Forward    
Schedule of Investments [Line Items]    
Industry [5] USD/CAD Forward  
Derivative Liability [5] $ (520)  
Derivative Liabilities, Fair Value as a Percentage of Net Assets [1],[5] (0.10%)  
Investment, Identifier [Axis]: Series I | Investments in Loans | Other Infrastructure Assets | United States | Communications    
Schedule of Investments [Line Items]    
Industry   Communications
Fair Value   $ 20,433
Fair Value as a Percentage of Net Assets [2]   8.30%
Investment, Identifier [Axis]: Series I | Investments in Loans | Other Infrastructure Assets | United States | Digital    
Schedule of Investments [Line Items]    
Industry Digital  
Fair Value $ 32,000  
Fair Value as a Percentage of Net Assets [1] 8.10%  
Investment, Identifier [Axis]: Series I | Investments in Loans | Other Infrastructure Assets | United States | Power & Utilities    
Schedule of Investments [Line Items]    
Industry Power & Utilities Power & Utilities
Fair Value $ 42,955 $ 33,170
Fair Value as a Percentage of Net Assets 10.90% [1] 13.40% [2]
Investment, Identifier [Axis]: Series I | Investments in Loans | Other Infrastructure Assets | Various | Digital    
Schedule of Investments [Line Items]    
Industry Digital  
Fair Value $ 1,006  
Fair Value as a Percentage of Net Assets [1] 0.30%  
Investment, Identifier [Axis]: Series I | Investments in Loans | Yondr Capital LP- 15.75%-17.75% 06/27/29 | Various | Digital    
Schedule of Investments [Line Items]    
Industry   Digital
Principal Amount or Number of Shares   22,963,616
Fair Value   $ 26,279
Fair Value as a Percentage of Net Assets [2]   10.60%
Investment, Identifier [Axis]: Series I | Investments in Partnership Investment Vehicle | AIC 3-Z Subsidiary, LLC | United States | Various    
Schedule of Investments [Line Items]    
Industry Various [3],[6] Various [4],[7]
Fair Value $ 32,403 [3],[6] $ 22,938 [4],[7]
Fair Value as a Percentage of Net Assets 8.20% [1],[3],[6] 9.30% [2],[4],[7]
Investment, Identifier [Axis]: Series I | Investments in Partnership Investment Vehicle | AP Hercules Aggregator, SCSp | Norway | Transportation    
Schedule of Investments [Line Items]    
Industry [3],[8] Transportation  
Fair Value [3],[8] $ 25,220  
Fair Value as a Percentage of Net Assets [1],[3],[8] 6.40%  
Investment, Identifier [Axis]: Series I | Investments in Partnership Investment Vehicle | AP Tosca Holdings, L.P. | United States | Power & Utilities    
Schedule of Investments [Line Items]    
Industry [4],[9]   Power & Utilities
Fair Value [4],[9]   $ 17,370
Fair Value as a Percentage of Net Assets [2],[4],[9]   7.00%
Investment, Identifier [Axis]: Series I | Investments in Partnership Investment Vehicle | CN Jackalope Holdings, LLC | United States | Power & Utilities    
Schedule of Investments [Line Items]    
Industry [3],[10] Power & Utilities  
Fair Value [3],[10] $ 23,575  
Fair Value as a Percentage of Net Assets [1],[3],[10] 6.00%  
Investment, Identifier [Axis]: Series I | Investments in Partnership Investment Vehicle | Novus Holdings Parent, L.P. | United States | Transportation    
Schedule of Investments [Line Items]    
Industry [3] Transportation  
Fair Value [3] $ 32,693  
Fair Value as a Percentage of Net Assets [1],[3] 8.30%  
Investment, Identifier [Axis]: Series I | Investments in Partnership Investment Vehicle | Novus Holdings Parent, L.P. | United States | Transportation One    
Schedule of Investments [Line Items]    
Industry [4]   Transportation
Fair Value [4]   $ 25,902
Fair Value as a Percentage of Net Assets [2],[4]   10.50%
Investment, Identifier [Axis]: Series I | Investments in Partnership Investment Vehicle | Other Infrastructure Assets | Canada | Social    
Schedule of Investments [Line Items]    
Industry [3] Social  
Fair Value [3] $ 16,239  
Fair Value as a Percentage of Net Assets [1],[3] 4.10%  
Investment, Identifier [Axis]: Series I | Investments in Partnership Investment Vehicle | Other Infrastructure Assets | United States | Power & Utilities    
Schedule of Investments [Line Items]    
Industry Power & Utilities [3] Power & Utilities [4]
Fair Value $ 52,790 [3] $ 12,879 [4]
Fair Value as a Percentage of Net Assets 13.30% [1],[3] 5.20% [2],[4]
Investment, Identifier [Axis]: Series I | Investments in Partnership Investment Vehicle | Other Infrastructure Assets | United States | Transportation    
Schedule of Investments [Line Items]    
Industry Transportation [3] Transportation [4]
Fair Value $ 20,433 [3] $ 6,605 [4]
Fair Value as a Percentage of Net Assets 5.20% [3] 2.70% [2],[4]
Investment, Identifier [Axis]: Series I | Investments in Warrants | Yondr Capital LP | Various | Digital    
Schedule of Investments [Line Items]    
Industry   Digital
Fair Value   $ 1,076
Fair Value as a Percentage of Net Assets [2]   0.40%
Investment, Identifier [Axis]: Series II | Investments in Loans | Other Infrastructure Assets | United States | Digital    
Schedule of Investments [Line Items]    
Industry Digital Digital
Fair Value $ 75,763 $ 57,045
Fair Value as a Percentage of Net Assets 8.10% [1] 8.20% [2]
Investment, Identifier [Axis]: Series II | Investments in Loans | Other Infrastructure Assets | United States | Power & Utilities    
Schedule of Investments [Line Items]    
Industry Power & Utilities Power & Utilities
Fair Value $ 101,702 $ 92,599
Fair Value as a Percentage of Net Assets 10.80% [1] 13.40% [2]
Investment, Identifier [Axis]: Series II | Investments in Loans | Other Infrastructure Assets | Various | Digital    
Schedule of Investments [Line Items]    
Industry Digital  
Fair Value $ 2,382  
Fair Value as a Percentage of Net Assets [1] 0.30%  
Investment, Identifier [Axis]: Series II | Investments in Loans | Yondr Capital LP- 15.75%-17.75% 06/27/29 | Various | Digital    
Schedule of Investments [Line Items]    
Industry   Digital
Principal Amount or Number of Shares   64,109,233
Fair Value   $ 73,366
Fair Value as a Percentage of Net Assets [2]   10.60%
Investment, Identifier [Axis]: Series II | Investments in Partnership Investment Vehicle | AIC 3-Z Subsidiary, LLC | United States | Various    
Schedule of Investments [Line Items]    
Industry Various [3],[6] Various [4],[7]
Fair Value $ 76,718 [3],[6] $ 64,037 [4],[7]
Fair Value as a Percentage of Net Assets 8.20% [1],[3],[6] 9.20% [2],[4],[7]
Investment, Identifier [Axis]: Series II | Investments in Partnership Investment Vehicle | AP Hercules Aggregator, SCSp | Norway | Transportation    
Schedule of Investments [Line Items]    
Industry [3],[8] Transportation  
Fair Value [3],[8] $ 59,710  
Fair Value as a Percentage of Net Assets [1],[3],[8] 6.40%  
Investment, Identifier [Axis]: Series II | Investments in Partnership Investment Vehicle | AP Tosca Holdings, L.P. | United States | Power & Utilities    
Schedule of Investments [Line Items]    
Industry [4]   Power & Utilities
Fair Value [4]   $ 48,492
Fair Value as a Percentage of Net Assets [2],[4]   7.00%
Investment, Identifier [Axis]: Series II | Investments in Partnership Investment Vehicle | CN Jackalope Holdings, LLC | United States | Power & Utilities    
Schedule of Investments [Line Items]    
Industry [3],[10] Power & Utilities  
Fair Value [3],[10] $ 55,817  
Fair Value as a Percentage of Net Assets [1],[3],[10] 5.90%  
Investment, Identifier [Axis]: Series II | Investments in Partnership Investment Vehicle | Novus Holdings Parent, L.P. | United States | Transportation    
Schedule of Investments [Line Items]    
Industry Transportation [3] Transportation [4]
Fair Value $ 77,405 [3] $ 72,314 [4]
Fair Value as a Percentage of Net Assets 8.20% [1],[3] 10.40% [2],[4]
Investment, Identifier [Axis]: Series II | Investments in Partnership Investment Vehicle | Other Infrastructure Assets | Canada | Social    
Schedule of Investments [Line Items]    
Industry [3] Social  
Fair Value [3] $ 38,447  
Fair Value as a Percentage of Net Assets [1],[3] 4.10%  
Investment, Identifier [Axis]: Series II | Investments in Partnership Investment Vehicle | Other Infrastructure Assets | United States | Power & Utilities    
Schedule of Investments [Line Items]    
Industry Power & Utilities [3] Power & Utilities [4]
Fair Value $ 124,987 [3] $ 35,955 [4]
Fair Value as a Percentage of Net Assets 13.30% [1],[3] 5.20% [2],[4]
Investment, Identifier [Axis]: Series II | Investments in Partnership Investment Vehicle | Other Infrastructure Assets | United States | Transportation    
Schedule of Investments [Line Items]    
Industry Transportation [3] Transportation [4]
Fair Value $ 48,374 [3] $ 18,441 [4]
Fair Value as a Percentage of Net Assets 5.10% [1],[3] 2.70% [2],[4]
Investment, Identifier [Axis]: Series II | Investments in Warrants | Yondr Capital LP | Various | Digital    
Schedule of Investments [Line Items]    
Industry   Digital
Fair Value   $ 3,004
Fair Value as a Percentage of Net Assets [2]   0.40%
Investment, Identifier [Axis]: Series II| Derivative Liabilities | Foreign Currency Contracts | United States |USD/CAD Forwards    
Schedule of Investments [Line Items]    
Industry [5] USD/CAD Forward  
Derivative Liability [5] $ (1,315)  
Derivative Liabilities, Fair Value as a Percentage of Net Assets [1],[5] (0.10%)  
Investment, Identifier [Axis]: Total | Derivative Assets | Foreign Currency Contracts | United States | USD/CAD Forwards    
Schedule of Investments [Line Items]    
Industry [5] USD/CAD Forward  
Derivative Liabilities, Fair Value as a Percentage of Net Assets [1],[5] (0.10%)  
Investment, Identifier [Axis]: Total | Derivative Liabilities | Foreign Currency Contracts | United States | USD/CAD Forwards    
Schedule of Investments [Line Items]    
Derivative Liability [5] $ (1,835)  
Investment, Identifier [Axis]: Total | Investments in Loans | Other Infrastructure Assets | United States | Digital    
Schedule of Investments [Line Items]    
Industry Digital Digital
Fair Value $ 107,763 $ 77,478
Fair Value as a Percentage of Net Assets 8.10% [1] 8.20% [2]
Investment, Identifier [Axis]: Total | Investments in Loans | Other Infrastructure Assets | United States | Power & Utilities    
Schedule of Investments [Line Items]    
Industry Power & Utilities Power & Utilities
Fair Value $ 144,657 $ 125,769
Fair Value as a Percentage of Net Assets 10.80% [1] 13.40% [2]
Investment, Identifier [Axis]: Total | Investments in Loans | Other Infrastructure Assets | Various | Digital    
Schedule of Investments [Line Items]    
Industry Digital  
Fair Value $ 3,388  
Fair Value as a Percentage of Net Assets [1] 0.30%  
Investment, Identifier [Axis]: Total | Investments in Loans | Yondr Capital LP- 15.75%-17.75% 06/27/29 | Various | Communications    
Schedule of Investments [Line Items]    
Industry   Digital
Principal Amount or Number of Shares   87,072,849
Fair Value   $ 99,645
Fair Value as a Percentage of Net Assets [2]   10.60%
Investment, Identifier [Axis]: Total | Investments in Partnership Investment Vehicle | AIC 3-Z Subsidiary, LLC | United States | Various    
Schedule of Investments [Line Items]    
Industry Various [3],[6] Various [4],[7]
Fair Value $ 109,121 [3],[6] $ 86,975 [4],[7]
Fair Value as a Percentage of Net Assets 8.20% [1],[3],[6] 9.20% [2],[4],[7]
Investment, Identifier [Axis]: Total | Investments in Partnership Investment Vehicle | AP Hercules Aggregator, SCSp | Norway | Transportation    
Schedule of Investments [Line Items]    
Industry [3],[8] Transportation  
Fair Value [3],[8] $ 84,930  
Fair Value as a Percentage of Net Assets [1],[3],[8] 6.40%  
Investment, Identifier [Axis]: Total | Investments in Partnership Investment Vehicle | AP Tosca Holdings, L.P. | United States | Power & Utilities    
Schedule of Investments [Line Items]    
Industry [4],[9]   Power & Utilities
Fair Value [4],[9]   $ 65,862
Fair Value as a Percentage of Net Assets [2],[4],[9]   7.00%
Investment, Identifier [Axis]: Total | Investments in Partnership Investment Vehicle | CN Jackalope Holdings, LLC | United States | Power & Utilities    
Schedule of Investments [Line Items]    
Industry [3],[10] Power & Utilities  
Fair Value [3],[10] $ 79,392  
Fair Value as a Percentage of Net Assets [1],[3],[10] 5.90%  
Investment, Identifier [Axis]: Total | Investments in Partnership Investment Vehicle | Novus Holdings Parent, L.P. | United States | Transportation    
Schedule of Investments [Line Items]    
Industry Transportation [3] Transportation [4]
Fair Value $ 110,098 [3] $ 98,216 [4]
Fair Value as a Percentage of Net Assets 8.20% [1],[3] 10.40% [2],[4]
Investment, Identifier [Axis]: Total | Investments in Partnership Investment Vehicle | Other Infrastructure Assets | Canada | Social    
Schedule of Investments [Line Items]    
Industry [3] Social  
Fair Value [3] $ 54,686  
Fair Value as a Percentage of Net Assets [1],[3] 4.10%  
Investment, Identifier [Axis]: Total | Investments in Partnership Investment Vehicle | Other Infrastructure Assets | United States | Power & Utilities    
Schedule of Investments [Line Items]    
Industry Power & Utilities [3] Power & Utilities [4]
Fair Value $ 177,777 [3] $ 48,834 [4]
Fair Value as a Percentage of Net Assets 13.30% [1],[3] 5.20% [2],[4]
Investment, Identifier [Axis]: Total | Investments in Partnership Investment Vehicle | Other Infrastructure Assets | United States | Transportation    
Schedule of Investments [Line Items]    
Industry Transportation [3] Transportation [4]
Fair Value $ 68,807 [3] $ 25,046 [4]
Fair Value as a Percentage of Net Assets 5.10% [1],[3] 2.70% [2],[4]
Investment, Identifier [Axis]: Total | Investments in Warrants | Yondr Capital LP | Various | Digital    
Schedule of Investments [Line Items]    
Industry   Digital
Fair Value   $ 4,080
Fair Value as a Percentage of Net Assets [2]   0.40%
[1] Fair Value as a percentage of Net Assets shown as a percentage of Net Assets of the respective Series. Numbers may not add due to rounding.
[2] Fair Value as a percentage of Net Assets shown as a percentage of Net Assets of the respective Series. Numbers may not add due to rounding.
[3] Partnership investment vehicle includes investments in both limited partnerships and limited liability companies.
[4] Partnership investment vehicle includes investments in both limited partnerships and limited liability companies.
[5] Foreign Currency Contracts includes two forward exchange contracts entered into for Canadian dollar exposures maturing on September 17, 2025 and September 28, 2029.
[6] Represents an investment in an affiliated entity of the Company.
[7] Represents an investment in an affiliated entity of the Company.
[8] Series I, Series II and the Company indirectly own 25,121,682, 59,478,318, and 84,600,000 units, respectively, in AP Hercules UK Ltd , an investment in the Transportation industry in the Norway. The fair value of Series I, Series II and the Company investment in units of AP Hercules UK Ltd were $25,720, $60,896 and $86,616 , respectively, and the percentage of Net Asset Value of Series I, Series II, and the Company for each investment was 6.4%.
[9] Series I, Series II and the Company indirectly own 42,724,063, 119,275,937, and 162,000,000 Series A units, respectively, in Tosca Holdco, LLC an investment in the Power & Utilities industry in the United States. The fair value of Series I, Series II and the Company investment in Series A units of Tosca Holdco, LLC were $19,636, $54,819 and $74,455, respectively, and the percentage of Net Asset Value of Series I, Series II, and the Company for each investment was 7.9%. Series I, Series II and the Company indirectly own 11,604,066, 32,395,934, and 44,000,000 Series B units, respectively, in Tosca Holdco LLC. The fair value of Series I, Series II and the Company investment in Series B units of Tosca Holdco, LLC were $5,333, $14,889 and $20,222, respectively, and the percentage of Net Asset Value of Series I, Series II, and the Company for each investment was 2.2%.
[10] Series I, Series II and the Company indirectly own 10,461,860, 24,769,594, and 35,231,454 Series A-2 units, respectively, in CN Jackalope Holdings, LLC, an investment in the Power & Utilities industry in the United States. The fair value of Series I, Series II and the Company investment in Series A-2 units of CN Jackalope Holdings, LLC were $10,396, $24,616 and $35,013, respectively, and the percentage of Net Asset Value of Series I, Series II, and the Company for each investment was 2.6%. Series I, Series II and the Company indirectly own 13,293,867, 31,474,679, and 44,768,546 Series A-3 units, respectively, in CN Jackalope Holdings, LLC. The fair value of Series I, Series II and the Company investment in CN Jackalope Holdings, LLC were $13,179, $31,202 and $44,380, respectively, and the percentage of Net Asset Value of Series I, Series II, and the Company for each investment was 3.3%.