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INVESTMENTS - Additional Details (Details)
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2025
USD ($)
investment
company
Sep. 30, 2024
USD ($)
investment
Sep. 30, 2025
USD ($)
investment
segment
company
Sep. 30, 2024
USD ($)
investment
Dec. 31, 2024
USD ($)
investment
company
Dec. 31, 2023
USD ($)
Feb. 01, 2023
USD ($)
Aug. 12, 2022
USD ($)
Jul. 08, 2021
USD ($)
May 12, 2021
USD ($)
Schedule of Investments [Line Items]                    
Total investments at fair value $ 4,479,835,000   $ 4,479,835,000   $ 3,094,065,000          
Pre-tax net unrealized (depreciation) appreciation     $ 38,000,000.0 $ (7,400,000)            
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]     Net unrealized appreciation (depreciation) on investments Net unrealized appreciation (depreciation) on investments            
Number of non-accrual portfolio companies | company 5   5   5          
Number of portfolio company on PIK non-accrual | company 1   1   1          
Cost $ 4,478,081,000   $ 4,478,081,000   $ 3,117,330,000         $ 602,400,000
Number of operating segments | segment     1              
Number of reportable segments | segment     1              
Borrowings under credit facilities 826,604,000   $ 826,604,000   594,357,000          
Subscription Facility | Line of Credit | CPCF BPCC LLC                    
Schedule of Investments [Line Items]                    
Borrowings under credit facilities         168,300,000          
Investment, Identifier [Axis]: 1WorldSync, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[2],[3],[4],[5]         10,672,000          
Cost [1],[2],[3],[4],[5]         10,659,000          
Investment, Identifier [Axis]: A.T. Holdings II LTD, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 9,194,000 [6],[7],[8],[9]   9,194,000 [6],[7],[8],[9]   10,175,000 [5],[10],[11],[12]          
Cost 14,250,000 [6],[7],[8],[9]   14,250,000 [6],[7],[8],[9]   14,250,000 [5],[10],[11],[12]          
Investment, Identifier [Axis]: ABC Legal Holdings, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[13],[14],[15],[16] 5,566,000   5,566,000              
Cost [9],[13],[14],[15],[16] 5,567,000   5,567,000              
Investment, Identifier [Axis]: ABC Legal Holdings, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[13],[15],[16] (15,000)   (15,000)              
Cost [7],[9],[13],[15],[16] (15,000)   (15,000)              
Investment, Identifier [Axis]: AD Bidco, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 18,595,000 [9],[13],[14],[16],[17],[18]   18,595,000 [9],[13],[14],[16],[17],[18]   14,438,000 [1],[2],[3],[5],[19]          
Cost 18,447,000 [9],[13],[14],[16],[17],[18]   18,447,000 [9],[13],[14],[16],[17],[18]   14,002,000 [1],[2],[3],[5],[19]          
Investment, Identifier [Axis]: AD Bidco, Inc., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value (23,000) [7],[9],[13],[16],[17]   (23,000) [7],[9],[13],[16],[17]   0 [2],[3],[5],[11],[19]          
Cost (35,000) [7],[9],[13],[16],[17]   (35,000) [7],[9],[13],[16],[17]   (40,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: AG Group Holdings Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[15],[16],[20] 1,623,000   1,623,000              
Cost [7],[15],[16],[20] 1,706,000   1,706,000              
Investment, Identifier [Axis]: AP Gaming I, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [16],[17],[20] 1,932,000   1,932,000              
Cost [16],[17],[20] 1,926,000   1,926,000              
Investment, Identifier [Axis]: APC1 Holding, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 2,702,000 [8],[9],[14],[16],[21]   2,702,000 [8],[9],[14],[16],[21]   2,370,000 [1],[3],[5],[12],[22]          
Cost 2,333,000 [8],[9],[14],[16],[21]   2,333,000 [8],[9],[14],[16],[21]   2,324,000 [1],[3],[5],[12],[22]          
Investment, Identifier [Axis]: APOG Bidco Pty Ltd, Second Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[12],[23]         451,000          
Cost [1],[3],[5],[12],[23]         538,000          
Investment, Identifier [Axis]: ASC Communications, LLC, Class A Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 504,000 [9]   504,000 [9]   516,000 [5]          
Cost 321,000 [9]   321,000 [9]   321,000 [5]          
Investment, Identifier [Axis]: ASC Communications, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 56,258,000 [9],[14],[15],[16],[17],[18]   56,258,000 [9],[14],[15],[16],[17],[18]   3,565,000 [3],[4],[5],[24]          
Cost 56,278,000 [9],[14],[15],[16],[17],[18]   56,278,000 [9],[14],[15],[16],[17],[18]   3,533,000 [3],[4],[5],[24]          
Investment, Identifier [Axis]: ASC Communications, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value (5,000) [7],[9],[13],[15],[16]   (5,000) [7],[9],[13],[15],[16]   0 [3],[5],[11],[19],[24]          
Cost (4,000) [7],[9],[13],[15],[16]   (4,000) [7],[9],[13],[15],[16]   (5,000) [3],[5],[11],[19],[24]          
Investment, Identifier [Axis]: ATL II MRO Holdings Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 45,290,000 [9],[14],[16],[17],[18]   45,290,000 [9],[14],[16],[17],[18]   45,426,000 [1],[2],[3],[4],[5]          
Cost 45,099,000 [9],[14],[16],[17],[18]   45,099,000 [9],[14],[16],[17],[18]   45,332,000 [1],[2],[3],[4],[5]          
Investment, Identifier [Axis]: ATL II MRO Holdings Inc., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value (67,000) [7],[9],[13],[16],[17]   (67,000) [7],[9],[13],[16],[17]   (96,000) [2],[3],[5],[11],[19]          
Cost (85,000) [7],[9],[13],[16],[17]   (85,000) [7],[9],[13],[16],[17]   (100,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: AWP Group Holdings, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 24,750,000 [7],[9],[13],[14],[15],[16],[18]   24,750,000 [7],[9],[13],[14],[15],[16],[18]   24,938,000 [1],[3],[5],[11],[24]          
Cost 24,750,000 [7],[9],[13],[14],[15],[16],[18]   24,750,000 [7],[9],[13],[14],[15],[16],[18]   24,938,000 [1],[3],[5],[11],[24]          
Investment, Identifier [Axis]: Accelerant Holdings, Class A Convertible Preferred Equity                    
Schedule of Investments [Line Items]                    
Total investments at fair value [5],[11],[25]         6,347,000          
Cost [5],[11],[25]         5,000,000          
Investment, Identifier [Axis]: Accelerant Holdings, Class B Convertible Preferred Equity                    
Schedule of Investments [Line Items]                    
Total investments at fair value [5],[11],[25]         2,285,000          
Cost [5],[11],[25]         1,667,000          
Investment, Identifier [Axis]: Accelerant Holdings, Common Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[26] 3,742,000   3,742,000              
Cost [7],[26] 3,341,000   3,341,000              
Investment, Identifier [Axis]: Accelerant Holdings, Preferred Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value [5],[11],[25]         5,880,000          
Cost [5],[11],[25]         5,880,000          
Investment, Identifier [Axis]: Accelevation LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[13],[14],[15],[16],[18] 2,966,000   2,966,000              
Cost [9],[13],[14],[15],[16],[18] 2,914,000   2,914,000              
Investment, Identifier [Axis]: Accelevation LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[13],[14],[15],[16] 152,000   152,000              
Cost [9],[13],[14],[15],[16] 140,000   140,000              
Investment, Identifier [Axis]: Acclime Holdings HK Limited, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [8],[9],[13],[14],[16],[27] 14,344,000   14,344,000              
Cost [8],[9],[13],[14],[16],[27] 14,271,000   14,271,000              
Investment, Identifier [Axis]: Acclime Holdings HK Limited, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[12],[28]         4,795,000          
Cost [1],[3],[5],[12],[28]         4,840,000          
Investment, Identifier [Axis]: Acclime Holdings HK Limited, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[12],[28]         2,518,000          
Cost [1],[3],[5],[12],[28]         2,548,000          
Investment, Identifier [Axis]: Acclime Holdings HK Limited, Subordinated Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [8],[9],[14] 322,000   322,000              
Cost [8],[9],[14] 321,000   321,000              
Investment, Identifier [Axis]: Accurus Aerospace Corporation, Common Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[9],[26]   0 [7],[9],[26]   0 [5],[11],[25]          
Cost 263,000 [7],[9],[26]   263,000 [7],[9],[26]   263,000 [5],[11],[25]          
Investment, Identifier [Axis]: Accurus Aerospace Corporation, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 13,936,000 [9],[14],[16],[17]   13,936,000 [9],[14],[16],[17]   12,624,000 [1],[2],[3],[5]          
Cost 14,033,000 [9],[14],[16],[17]   14,033,000 [9],[14],[16],[17]   12,937,000 [1],[2],[3],[5]          
Investment, Identifier [Axis]: Accurus Aerospace Corporation, LLC Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[26] 0   0              
Cost [7],[9],[26] 18,000   18,000              
Investment, Identifier [Axis]: Accurus Aerospace Corporation, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 364,000 [7],[9],[13],[16],[17]   364,000 [7],[9],[13],[16],[17]   1,061,000 [2],[3],[5],[11],[19]          
Cost 371,000 [7],[9],[13],[16],[17]   371,000 [7],[9],[13],[16],[17]   1,095,000 [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: Acogroup, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value 12,819,000 [8],[9],[14],[16],[21],[29]   12,819,000 [8],[9],[14],[16],[21],[29]   20,107,000 [1],[3],[5],[11],[12],[30]          
Cost 28,570,000 [8],[9],[14],[16],[21],[29]   28,570,000 [8],[9],[14],[16],[21],[29]   28,750,000 [1],[3],[5],[11],[12],[30]          
Investment, Identifier [Axis]: Acogroup, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value 653,000 [8],[9],[14],[16],[29],[31]   653,000 [8],[9],[14],[16],[29],[31]   70,000 [1],[3],[5],[12],[30]          
Cost 1,580,000 [8],[9],[14],[16],[29],[31]   1,580,000 [8],[9],[14],[16],[29],[31]   111,000 [1],[3],[5],[12],[30]          
Investment, Identifier [Axis]: Adhefin International, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 2,309,000 [7],[8],[9],[13],[16],[21]   2,309,000 [7],[8],[9],[13],[16],[21]   1,716,000 [3],[5],[11],[12],[19],[22]          
Cost 2,199,000 [7],[8],[9],[13],[16],[21]   2,199,000 [7],[8],[9],[13],[16],[21]   1,768,000 [3],[5],[11],[12],[19],[22]          
Investment, Identifier [Axis]: Adhefin International, Subordinated Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [5],[11],[12],[22]         326,000          
Cost [5],[11],[12],[22]         341,000          
Investment, Identifier [Axis]: Aegros Holdco 2 LTD, Common Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[8],[9],[26] 587,000   587,000              
Cost [7],[8],[9],[26] 12,000   12,000              
Investment, Identifier [Axis]: Aegros Holdco 2 LTD, Second Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[8],[9],[32] 5,309,000   5,309,000              
Cost [7],[8],[9],[32] 5,980,000   5,980,000              
Investment, Identifier [Axis]: Aesthetics Australia Group Pty Ltd (Laser Clinics Australia Group), First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 528,000 [8],[9],[14],[16],[33]   528,000 [8],[9],[14],[16],[33]   589,000 [1],[3],[5],[12],[34]          
Cost 801,000 [8],[9],[14],[16],[33]   801,000 [8],[9],[14],[16],[33]   793,000 [1],[3],[5],[12],[34]          
Investment, Identifier [Axis]: AirX Climate Solutions, Inc., First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value 13,581,000 [9],[14],[16],[17]   13,581,000 [9],[14],[16],[17]   11,524,000 [1],[2],[3],[5]          
Cost 13,788,000 [9],[14],[16],[17]   13,788,000 [9],[14],[16],[17]   11,507,000 [1],[2],[3],[5]          
Investment, Identifier [Axis]: AirX Climate Solutions, Inc., First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value 8,748,000 [9],[13],[14],[16],[17],[18]   8,748,000 [9],[13],[14],[16],[17],[18]   11,326,000 [1],[2],[3],[4],[5],[19]          
Cost 8,809,000 [9],[13],[14],[16],[17],[18]   8,809,000 [9],[13],[14],[16],[17],[18]   11,147,000 [1],[2],[3],[4],[5],[19]          
Investment, Identifier [Axis]: AirX Climate Solutions, Inc., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value (28,000) [7],[9],[13],[16],[17]   (28,000) [7],[9],[13],[16],[17]   0 [2],[3],[5],[11],[19]          
Cost (56,000) [7],[9],[13],[16],[17]   (56,000) [7],[9],[13],[16],[17]   (64,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: Aldinger Company, Second Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9] 9,999,000   9,999,000              
Cost [7],[9] 9,805,000   9,805,000              
Investment, Identifier [Axis]: Alix Partners, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [15],[16],[20] 2,978,000   2,978,000              
Cost [15],[16],[20] 2,993,000   2,993,000              
Investment, Identifier [Axis]: AlliA Insurance Brokers NV, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 5,485,000 [8],[9],[14],[16],[31]   5,485,000 [8],[9],[14],[16],[31]   4,569,000 [1],[3],[5],[12],[19],[30]          
Cost 4,933,000 [8],[9],[14],[16],[31]   4,933,000 [8],[9],[14],[16],[31]   4,646,000 [1],[3],[5],[12],[19],[30]          
Investment, Identifier [Axis]: Alliant, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[15],[16],[20] 6,972,000   6,972,000              
Cost [7],[15],[16],[20] 6,986,000   6,986,000              
Investment, Identifier [Axis]: Amalfi Midco, Class B Common Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value 2,663,000 [7],[8],[9],[26]   2,663,000 [7],[8],[9],[26]   1,239,000 [5],[11],[12],[25]          
Cost 1,115,000 [7],[8],[9],[26]   1,115,000 [7],[8],[9],[26]   1,115,000 [5],[11],[12],[25]          
Investment, Identifier [Axis]: Amalfi Midco, Second Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 348,000 [7],[8],[9]   348,000 [7],[8],[9]   290,000 [5],[11],[12]          
Cost 325,000 [7],[8],[9]   325,000 [7],[8],[9]   301,000 [5],[11],[12]          
Investment, Identifier [Axis]: Amalfi Midco, Subordinated Loan Notes                    
Schedule of Investments [Line Items]                    
Total investments at fair value 6,411,000 [7],[8],[9]   6,411,000 [7],[8],[9]   5,492,000 [5],[11],[12]          
Cost 5,695,000 [7],[8],[9]   5,695,000 [7],[8],[9]   5,416,000 [5],[11],[12]          
Investment, Identifier [Axis]: Amalfi Midco, Warrants                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,065,000 [7],[8],[9],[26]   1,065,000 [7],[8],[9],[26]   919,000 [5],[11],[12],[25]          
Cost 4,000 [7],[8],[9],[26]   4,000 [7],[8],[9],[26]   4,000 [5],[11],[12],[25]          
Investment, Identifier [Axis]: American Bath, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[15],[16] 0   0              
Cost [7],[15],[16] (52,000)   (52,000)              
Investment, Identifier [Axis]: Americo Chemical Products, LLC, Common Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value 354,000 [9],[26]   354,000 [9],[26]   354,000 [5],[25]          
Cost 262,000 [9],[26]   262,000 [9],[26]   262,000 [5],[25]          
Investment, Identifier [Axis]: Americo Chemical Products, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 5,105,000 [7],[9],[15],[16],[18]   5,105,000 [7],[9],[15],[16],[18]   5,361,000 [1],[3],[5],[11],[24]          
Cost 5,087,000 [7],[9],[15],[16],[18]   5,087,000 [7],[9],[15],[16],[18]   5,351,000 [1],[3],[5],[11],[24]          
Investment, Identifier [Axis]: Americo Chemical Products, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value (15,000) [7],[9],[13],[15],[16]   (15,000) [7],[9],[13],[15],[16]   (21,000) [3],[5],[11],[19],[24]          
Cost (21,000) [7],[9],[13],[15],[16]   (21,000) [7],[9],[13],[15],[16]   (25,000) [3],[5],[11],[19],[24]          
Investment, Identifier [Axis]: AnalytiChem Holding GmbH, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,315,000 [8],[9],[14],[16],[35]   1,315,000 [8],[9],[14],[16],[35]   1,224,000 [1],[3],[5],[12],[34]          
Cost 1,424,000 [8],[9],[14],[16],[35]   1,424,000 [8],[9],[14],[16],[35]   1,424,000 [1],[3],[5],[12],[34]          
Investment, Identifier [Axis]: AnalytiChem Holding GmbH, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value 17,641,000 [8],[9],[14],[16],[21]   17,641,000 [8],[9],[14],[16],[21]   6,414,000 [1],[3],[5],[12],[22]          
Cost 16,382,000 [8],[9],[14],[16],[21]   16,382,000 [8],[9],[14],[16],[21]   6,889,000 [1],[3],[5],[12],[22]          
Investment, Identifier [Axis]: AnalytiChem Holding GmbH, First Lien Senior Secured Term Loan 3                    
Schedule of Investments [Line Items]                    
Total investments at fair value 2,219,000 [8],[9],[14],[16],[17]   2,219,000 [8],[9],[14],[16],[17]   2,138,000 [1],[3],[5],[12],[30]          
Cost 2,235,000 [8],[9],[14],[16],[17]   2,235,000 [8],[9],[14],[16],[17]   2,159,000 [1],[3],[5],[12],[30]          
Investment, Identifier [Axis]: AnalytiChem Holding GmbH, First Lien Senior Secured Term Loan 4                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[12],[30]         6,951,000          
Cost [1],[3],[5],[12],[30]         7,287,000          
Investment, Identifier [Axis]: AnalytiChem Holding GmbH, First Lien Senior Secured Term Loan 5                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[12],[28]         2,213,000          
Cost [1],[3],[5],[12],[28]         2,234,000          
Investment, Identifier [Axis]: Apex Bidco Limited, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,352,000 [8],[9],[14],[16],[36]   1,352,000 [8],[9],[14],[16],[36]   1,284,000 [1],[3],[5],[12],[37]          
Cost 1,306,000 [8],[9],[14],[16],[36]   1,306,000 [8],[9],[14],[16],[36]   1,298,000 [1],[3],[5],[12],[37]          
Investment, Identifier [Axis]: Application Boot Camp LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[14],[17] 1,999,000   1,999,000              
Cost [9],[14],[17] 1,997,000   1,997,000              
Investment, Identifier [Axis]: Application Boot Camp LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[13],[16],[17] (11,000)   (11,000)              
Cost [7],[9],[13],[16],[17] (8,000)   (8,000)              
Investment, Identifier [Axis]: Application Boot Camp LLC, Subordinated Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9] 137,000   137,000              
Cost [7],[9] 137,000   137,000              
Investment, Identifier [Axis]: Application Boot Camp, LLC, Common Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9] 426,000   426,000              
Cost [9] 391,000   391,000              
Investment, Identifier [Axis]: Aptus 1829. GmbH, Common Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[8],[9],[26]   0 [7],[8],[9],[26]   0 [5],[11],[12],[25]          
Cost 12,000 [7],[8],[9],[26]   12,000 [7],[8],[9],[26]   12,000 [5],[11],[12],[25]          
Investment, Identifier [Axis]: Aptus 1829. GmbH, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[12],[30]         2,027,000          
Cost [1],[3],[5],[12],[30]         2,525,000          
Investment, Identifier [Axis]: Aptus 1829. GmbH, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [8],[9],[14],[16],[31] 3,675,000   3,675,000              
Cost [8],[9],[14],[16],[31] 3,808,000   3,808,000              
Investment, Identifier [Axis]: Aptus 1829. GmbH, Preferred Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value 71,000 [7],[8],[9],[26]   71,000 [7],[8],[9],[26]   43,000 [5],[11],[12],[25]          
Cost 122,000 [7],[8],[9],[26]   122,000 [7],[8],[9],[26]   122,000 [5],[11],[12],[25]          
Investment, Identifier [Axis]: Apus Bidco Limited, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,280,000 [8],[9],[14],[16],[38]   1,280,000 [8],[9],[14],[16],[38]   1,191,000 [1],[3],[5],[12],[39]          
Cost 1,324,000 [8],[9],[14],[16],[38]   1,324,000 [8],[9],[14],[16],[38]   1,319,000 [1],[3],[5],[12],[39]          
Investment, Identifier [Axis]: Aquavista Watersides 2 LTD, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 3,147,000 [8],[9],[14],[16],[38]   3,147,000 [8],[9],[14],[16],[38]   2,927,000 [1],[3],[5],[12],[19],[37]          
Cost 3,039,000 [8],[9],[14],[16],[38]   3,039,000 [8],[9],[14],[16],[38]   3,010,000 [1],[3],[5],[12],[19],[37]          
Investment, Identifier [Axis]: Aquavista Watersides 2 LTD, Second Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,136,000 [7],[8],[9],[16],[38]   1,136,000 [7],[8],[9],[16],[38]   982,000 [3],[5],[11],[12],[37]          
Cost 1,097,000 [7],[8],[9],[16],[38]   1,097,000 [7],[8],[9],[16],[38]   1,014,000 [3],[5],[11],[12],[37]          
Investment, Identifier [Axis]: Arc Education, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 8,683,000 [7],[8],[9],[13],[14],[16],[31]   8,683,000 [7],[8],[9],[13],[14],[16],[31]   2,868,000 [1],[3],[5],[12],[19],[22]          
Cost 7,880,000 [7],[8],[9],[13],[14],[16],[31]   7,880,000 [7],[8],[9],[13],[14],[16],[31]   2,861,000 [1],[3],[5],[12],[19],[22]          
Investment, Identifier [Axis]: Archimede, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 14,498,000 [8],[9],[14],[16],[21]   14,498,000 [8],[9],[14],[16],[21]   12,987,000 [1],[3],[5],[12],[22]          
Cost 14,911,000 [8],[9],[14],[16],[21]   14,911,000 [8],[9],[14],[16],[21]   14,868,000 [1],[3],[5],[12],[22]          
Investment, Identifier [Axis]: Ares Loan Funding VII, Ltd., Subordinated Structured Notes                    
Schedule of Investments [Line Items]                    
Total investments at fair value 5,037,000 [7],[8],[16],[17]   5,037,000 [7],[8],[16],[17]   5,037,000 [2],[3],[11],[12]          
Cost 5,000,000 [7],[8],[16],[17]   5,000,000 [7],[8],[16],[17]   5,000,000 [2],[3],[11],[12]          
Investment, Identifier [Axis]: Argus Bidco Limited, Common Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[8],[9],[26]   0 [7],[8],[9],[26]   0 [5],[11],[12],[25]          
Cost 1,000 [7],[8],[9],[26]   1,000 [7],[8],[9],[26]   1,000 [5],[11],[12],[25]          
Investment, Identifier [Axis]: Argus Bidco Limited, Equity Loan Notes                    
Schedule of Investments [Line Items]                    
Total investments at fair value 59,000 [7],[8],[9]   59,000 [7],[8],[9]   66,000 [5],[11],[12]          
Cost 126,000 [7],[8],[9]   126,000 [7],[8],[9]   126,000 [5],[11],[12]          
Investment, Identifier [Axis]: Argus Bidco Limited, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value 4,062,000 [7],[8],[9],[14],[16],[31]   4,062,000 [7],[8],[9],[14],[16],[31]   2,969,000 [1],[3],[5],[12],[22]          
Cost 3,867,000 [7],[8],[9],[14],[16],[31]   3,867,000 [7],[8],[9],[14],[16],[31]   3,159,000 [1],[3],[5],[12],[22]          
Investment, Identifier [Axis]: Argus Bidco Limited, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value 259,000 [8],[9],[14],[16],[27]   259,000 [8],[9],[14],[16],[27]   254,000 [1],[2],[3],[5],[12]          
Cost 277,000 [8],[9],[14],[16],[27]   277,000 [8],[9],[14],[16],[27]   267,000 [1],[2],[3],[5],[12]          
Investment, Identifier [Axis]: Argus Bidco Limited, First Lien Senior Secured Term Loan 3                    
Schedule of Investments [Line Items]                    
Total investments at fair value 3,513,000 [7],[8],[9],[16],[38]   3,513,000 [7],[8],[9],[16],[38]   (46,000) [1],[3],[5],[12],[19],[37]          
Cost 3,459,000 [7],[8],[9],[16],[38]   3,459,000 [7],[8],[9],[16],[38]   (10,000) [1],[3],[5],[12],[19],[37]          
Investment, Identifier [Axis]: Argus Bidco Limited, Preferred Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value 60,000 [7],[8],[9]   60,000 [7],[8],[9]   66,000 [5],[11],[12]          
Cost 126,000 [7],[8],[9]   126,000 [7],[8],[9]   126,000 [5],[11],[12]          
Investment, Identifier [Axis]: Argus Bidco Limited, Second Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,829,000 [7],[8],[9]   1,829,000 [7],[8],[9]   1,554,000 [5],[11],[12]          
Cost 1,824,000 [7],[8],[9]   1,824,000 [7],[8],[9]   1,622,000 [5],[11],[12]          
Investment, Identifier [Axis]: Armstrong Transport Group (Pele Buyer, LLC), First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 7,022,000 [9],[14],[16],[27]   7,022,000 [9],[14],[16],[27]   6,203,000 [1],[2],[3],[5]          
Cost 7,088,000 [9],[14],[16],[27]   7,088,000 [9],[14],[16],[27]   6,550,000 [1],[2],[3],[5]          
Investment, Identifier [Axis]: Armstrong Transport Group (Pele Buyer, LLC), Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[13],[16],[27] 1,000   1,000              
Cost [7],[9],[13],[16],[27] 1,000   1,000              
Investment, Identifier [Axis]: Artemis Bidco Limited, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 472,000 [8],[9],[13],[14],[16],[21]   472,000 [8],[9],[13],[14],[16],[21]   256,000 [1],[3],[5],[12],[19],[22]          
Cost 430,000 [8],[9],[13],[14],[16],[21]   430,000 [8],[9],[13],[14],[16],[21]   261,000 [1],[3],[5],[12],[19],[22]          
Investment, Identifier [Axis]: Aspen Insurance Holdings Ltd., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 9,406,000 [7],[9]   9,406,000 [7],[9]   9,312,000 [5],[11]          
Cost 9,333,000 [7],[9]   9,333,000 [7],[9]   9,316,000 [5],[11]          
Investment, Identifier [Axis]: Astra Bidco Limited, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value 543,000 [8],[9],[14],[16],[21]   543,000 [8],[9],[14],[16],[21]   478,000 [1],[3],[5],[12],[19],[22]          
Cost 493,000 [8],[9],[14],[16],[21]   493,000 [8],[9],[14],[16],[21]   493,000 [1],[3],[5],[12],[19],[22]          
Investment, Identifier [Axis]: Astra Bidco Limited, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value 3,161,000 [8],[9],[14],[16],[38]   3,161,000 [8],[9],[14],[16],[38]   2,869,000 [1],[3],[5],[12],[19],[39]          
Cost 3,063,000 [8],[9],[14],[16],[38]   3,063,000 [8],[9],[14],[16],[38]   2,973,000 [1],[3],[5],[12],[19],[39]          
Investment, Identifier [Axis]: Asurion LLC, Second Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 9,551,000 [7],[15],[16],[20]   9,551,000 [7],[15],[16],[20]   9,628,000 [3],[11],[24]          
Cost 9,796,000 [7],[15],[16],[20]   9,796,000 [7],[15],[16],[20]   9,750,000 [3],[11],[24]          
Investment, Identifier [Axis]: Audio Precision, Inc., First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[22]         2,267,000          
Cost [1],[3],[5],[22]         2,957,000          
Investment, Identifier [Axis]: Audio Precision, Inc., First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[2],[3],[5]         4,312,000          
Cost [1],[2],[3],[5]         4,829,000          
Investment, Identifier [Axis]: Auxi International, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 336,000 [8],[9],[14],[16],[21]   336,000 [8],[9],[14],[16],[21]   290,000 [1],[3],[5],[12],[30]          
Cost 361,000 [8],[9],[14],[16],[21]   361,000 [8],[9],[14],[16],[21]   360,000 [1],[3],[5],[12],[30]          
Investment, Identifier [Axis]: Avance Clinical Bidco Pty Ltd, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,865,000 [8],[9],[13],[14],[16],[35]   1,865,000 [8],[9],[13],[14],[16],[35]   2,294,000 [1],[3],[5],[12],[19],[34]          
Cost 1,959,000 [8],[9],[13],[14],[16],[35]   1,959,000 [8],[9],[13],[14],[16],[35]   2,571,000 [1],[3],[5],[12],[19],[34]          
Investment, Identifier [Axis]: Aveanna Healthcare, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[8],[16],[17],[20] 2,080,000   2,080,000              
Cost [7],[8],[16],[17],[20] 2,056,000   2,056,000              
Investment, Identifier [Axis]: Azalea Buyer, Inc., Common Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value 319,000 [7],[9],[26]   319,000 [7],[9],[26]   288,000 [5],[11],[25]          
Cost 192,000 [7],[9],[26]   192,000 [7],[9],[26]   192,000 [5],[11],[25]          
Investment, Identifier [Axis]: Azalea Buyer, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 4,762,000 [9],[15],[16],[18]   4,762,000 [9],[15],[16],[18]   4,785,000 [1],[3],[5],[19],[24]          
Cost 4,724,000 [9],[15],[16],[18]   4,724,000 [9],[15],[16],[18]   4,728,000 [1],[3],[5],[19],[24]          
Investment, Identifier [Axis]: Azalea Buyer, Inc., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[9],[13],[15],[16]   0 [7],[9],[13],[15],[16]   0 [3],[5],[11],[19],[24]          
Cost (3,000) [7],[9],[13],[15],[16]   (3,000) [7],[9],[13],[15],[16]   (5,000) [3],[5],[11],[19],[24]          
Investment, Identifier [Axis]: Azalea Buyer, Inc., Subordinated Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,982,000 [7],[9]   1,982,000 [7],[9]   1,805,000 [5],[11]          
Cost 1,970,000 [7],[9]   1,970,000 [7],[9]   1,799,000 [5],[11]          
Investment, Identifier [Axis]: Azalea Topco Inc, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [15],[16],[20] 1,989,000   1,989,000              
Cost [15],[16],[20] 1,995,000   1,995,000              
Investment, Identifier [Axis]: BKF Buyer, Inc., Common Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,069,000 [7],[9],[26]   1,069,000 [7],[9],[26]   1,001,000 [5],[11],[25]          
Cost 963,000 [7],[9],[26]   963,000 [7],[9],[26]   963,000 [5],[11],[25]          
Investment, Identifier [Axis]: BKF Buyer, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 7,663,000 [9],[15],[16],[18]   7,663,000 [9],[15],[16],[18]   7,682,000 [1],[3],[5],[24]          
Cost 7,647,000 [9],[15],[16],[18]   7,647,000 [9],[15],[16],[18]   7,680,000 [1],[3],[5],[24]          
Investment, Identifier [Axis]: BKF Buyer, Inc., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value (36,000) [7],[9],[13],[15],[16]   (36,000) [7],[9],[13],[15],[16]   (50,000) [3],[5],[11],[19],[24]          
Cost (35,000) [7],[9],[13],[15],[16]   (35,000) [7],[9],[13],[15],[16]   (50,000) [3],[5],[11],[19],[24]          
Investment, Identifier [Axis]: BNI Global, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 37,124,000 [9],[14],[16],[40]   37,124,000 [9],[14],[16],[40]   32,557,000 [1],[3],[5],[41]          
Cost 33,888,000 [9],[14],[16],[40]   33,888,000 [9],[14],[16],[40]   33,931,000 [1],[3],[5],[41]          
Investment, Identifier [Axis]: BPG Holdings IV Corp, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 19,500,000 [7],[9],[16],[17]   19,500,000 [7],[9],[16],[17]   20,932,000 [2],[3],[5],[11]          
Cost 22,445,000 [7],[9],[16],[17]   22,445,000 [7],[9],[16],[17]   22,139,000 [2],[3],[5],[11]          
Investment, Identifier [Axis]: BVI Medical, Inc., Second Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[22]         5,636,000          
Cost [1],[3],[5],[22]         5,702,000          
Investment, Identifier [Axis]: Bain Capital Credit CLO 2024-5, Subordinated Structured Notes                    
Schedule of Investments [Line Items]                    
Total investments at fair value 4,311,000 [7],[8],[16],[17]   4,311,000 [7],[8],[16],[17]   4,368,000 [2],[3],[11],[12]          
Cost 4,250,000 [7],[8],[16],[17]   4,250,000 [7],[8],[16],[17]   4,250,000 [2],[3],[11],[12]          
Investment, Identifier [Axis]: Bariacum S.A, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 2,868,000 [8],[9],[14],[16],[21]   2,868,000 [8],[9],[14],[16],[21]   3,624,000 [1],[3],[5],[12],[30]          
Cost 3,901,000 [8],[9],[14],[16],[21]   3,901,000 [8],[9],[14],[16],[21]   3,863,000 [1],[3],[5],[12],[30]          
Investment, Identifier [Axis]: Basin Innovation Group, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 15,182,000 [9],[13],[14],[16],[18],[27]   15,182,000 [9],[13],[14],[16],[18],[27]   13,370,000 [1],[3],[5],[19],[24]          
Cost 14,976,000 [9],[13],[14],[16],[18],[27]   14,976,000 [9],[13],[14],[16],[18],[27]   13,373,000 [1],[3],[5],[19],[24]          
Investment, Identifier [Axis]: Basin Innovation Group, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[9],[13],[16],[27]   0 [7],[9],[13],[16],[27]   (27,000) [3],[5],[11],[19],[24]          
Cost (23,000) [7],[9],[13],[16],[27]   (23,000) [7],[9],[13],[16],[27]   (26,000) [3],[5],[11],[19],[24]          
Investment, Identifier [Axis]: Benefit Street Partners CLO XVII, Ltd., Subordinated Structured Notes                    
Schedule of Investments [Line Items]                    
Total investments at fair value 4,056,000 [7],[8],[16],[17]   4,056,000 [7],[8],[16],[17]   4,100,000 [2],[3],[11],[12]          
Cost 4,000,000 [7],[8],[16],[17]   4,000,000 [7],[8],[16],[17]   4,000,000 [2],[3],[11],[12]          
Investment, Identifier [Axis]: Benify (Bennevis AB), First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[12],[42]         275,000          
Cost [1],[3],[5],[12],[42]         361,000          
Investment, Identifier [Axis]: Beyond Risk Management, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 7,560,000 [9],[13],[14],[15],[16],[18]   7,560,000 [9],[13],[14],[15],[16],[18]   7,606,000 [1],[2],[3],[5],[19]          
Cost 7,361,000 [9],[13],[14],[15],[16],[18]   7,361,000 [9],[13],[14],[15],[16],[18]   7,178,000 [1],[2],[3],[5],[19]          
Investment, Identifier [Axis]: Bidwax, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 5,383,000 [7],[8],[9],[14],[16],[31]   5,383,000 [7],[8],[9],[14],[16],[31]   4,658,000 [1],[3],[5],[11],[12],[30]          
Cost 5,380,000 [7],[8],[9],[14],[16],[31]   5,380,000 [7],[8],[9],[14],[16],[31]   5,362,000 [1],[3],[5],[11],[12],[30]          
Investment, Identifier [Axis]: Biolam Group, Common Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[8],[9],[14],[26],[43]   0 [7],[8],[9],[14],[26],[43]   0          
Cost [7],[8],[9],[14],[26],[43] 0   0              
Investment, Identifier [Axis]: Biolam Group, Convertible Bonds                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[8],[9],[14],[26],[43]   0 [7],[8],[9],[14],[26],[43]   0          
Cost [7],[8],[9],[14],[26],[43] 0   0              
Investment, Identifier [Axis]: Biolam Group, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [44] 4,577,000   4,577,000   0          
Investment, Identifier [Axis]: Biolam Group, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 4,577,000 [7],[8],[9],[13],[14],[16],[29],[31],[43]   4,577,000 [7],[8],[9],[13],[14],[16],[29],[31],[43]   1,751,000 [1],[3],[5],[12],[19],[30],[45]          
Cost 5,765,000 [7],[8],[9],[13],[14],[16],[29],[31],[43]   5,765,000 [7],[8],[9],[13],[14],[16],[29],[31],[43]   3,440,000 [1],[3],[5],[12],[19],[30],[45]          
Investment, Identifier [Axis]: Biolam Group, Ordinary Shares                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[8],[9],[14],[26],[43]   0 [7],[8],[9],[14],[26],[43]   0          
Cost [7],[8],[9],[14],[26],[43] 0   0              
Investment, Identifier [Axis]: Biolam Group, Preferred Stock A                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[8],[9],[14],[26],[43]   0 [7],[8],[9],[14],[26],[43]   0          
Cost [7],[8],[9],[14],[26],[43] 0   0              
Investment, Identifier [Axis]: Biolam Group, Preferred Stock A2                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[8],[9],[14],[26],[43]   0 [7],[8],[9],[14],[26],[43]   0          
Cost [7],[8],[9],[14],[26],[43] 0   0              
Investment, Identifier [Axis]: Biolam Group, Preferred Stock B                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[8],[9],[14],[26],[43]   0 [7],[8],[9],[14],[26],[43]   0          
Cost [7],[8],[9],[14],[26],[43] 0   0              
Investment, Identifier [Axis]: Biolam Group, Preferred Stock C                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[8],[9],[14],[26],[43]   0 [7],[8],[9],[14],[26],[43]   0          
Cost [7],[8],[9],[14],[26],[43] 0   0              
Investment, Identifier [Axis]: Biolam Group, Preferred Stock O1                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[8],[9],[14],[26],[43]   0 [7],[8],[9],[14],[26],[43]   0          
Cost [7],[8],[9],[14],[26],[43] 0   0              
Investment, Identifier [Axis]: Biolam Group, Preferred Stock O2                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[8],[9],[14],[26],[43]   0 [7],[8],[9],[14],[26],[43]   0          
Cost [7],[8],[9],[14],[26],[43] 0   0              
Investment, Identifier [Axis]: Biolam Group, Warrants                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[8],[9],[14],[26],[43]   0 [7],[8],[9],[14],[26],[43]   0          
Cost [7],[8],[9],[14],[26],[43] 0   0              
Investment, Identifier [Axis]: Bishop Street Underwriters, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[13],[14],[15],[16] 5,724,000   5,724,000              
Cost [9],[13],[14],[15],[16] 5,727,000   5,727,000              
Investment, Identifier [Axis]: Bishop Street Underwriters, LLC, LLC Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[26] 576,000   576,000              
Cost [9],[26] 576,000   576,000              
Investment, Identifier [Axis]: Bounteous, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 10,133,000 [9],[13],[14],[15],[16]   10,133,000 [9],[13],[14],[15],[16]   10,276,000 [1],[2],[3],[5]          
Cost 10,116,000 [9],[13],[14],[15],[16]   10,116,000 [9],[13],[14],[15],[16]   10,241,000 [1],[2],[3],[5]          
Investment, Identifier [Axis]: Bounteous, Inc., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[13],[15],[16] (17,000)   (17,000)              
Cost [7],[9],[13],[15],[16] (17,000)   (17,000)              
Investment, Identifier [Axis]: Boxer Parent Company Inc., Second Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[16],[17],[20] 9,725,000   9,725,000              
Cost [7],[16],[17],[20] 9,466,000   9,466,000              
Investment, Identifier [Axis]: Breeze Aviation Group Inc, Second Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[16],[17] 5,997,000   5,997,000              
Cost [7],[9],[16],[17] 5,981,000   5,981,000              
Investment, Identifier [Axis]: Bridger Aerospace Group Holdings, LLC, Municipal Revenue Bond                    
Schedule of Investments [Line Items]                    
Total investments at fair value 33,967,000 [7]   33,967,000 [7]   33,778,000 [11]          
Cost 32,980,000 [7]   32,980,000 [7]   32,980,000 [11]          
Investment, Identifier [Axis]: Bridger Aerospace Group Holdings, LLC, Preferred Stock- Series C                    
Schedule of Investments [Line Items]                    
Total investments at fair value 19,057,000 [7],[9]   19,057,000 [7],[9]   17,725,000 [11]          
Cost 21,020,000 [7],[9]   21,020,000 [7],[9]   20,279,000 [11]          
Investment, Identifier [Axis]: BrightSign LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 10,680,000 [9],[14],[15],[16],[18]   10,680,000 [9],[14],[15],[16],[18]   10,366,000 [3],[4],[5],[24]          
Cost 10,642,000 [9],[14],[15],[16],[18]   10,642,000 [9],[14],[15],[16],[18]   10,315,000 [3],[4],[5],[24]          
Investment, Identifier [Axis]: BrightSign LLC, LLC units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,099,000 [9]   1,099,000 [9]   979,000 [5]          
Cost 924,000 [9]   924,000 [9]   924,000 [5]          
Investment, Identifier [Axis]: BrightSign LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 536,000 [7],[9],[13],[15],[16]   536,000 [7],[9],[13],[15],[16]   905,000 [3],[5],[11],[19],[24]          
Cost 532,000 [7],[9],[13],[15],[16]   532,000 [7],[9],[13],[15],[16]   900,000 [3],[5],[11],[19],[24]          
Investment, Identifier [Axis]: Brightpay Limited, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [8],[9],[14],[16],[31] 3,420,000   3,420,000              
Cost [8],[9],[14],[16],[31] 3,263,000   3,263,000              
Investment, Identifier [Axis]: Brightpay Limited, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[12],[19],[22]         539,000          
Cost [1],[3],[5],[12],[19],[22]         541,000          
Investment, Identifier [Axis]: Brightpay Limited, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[12],[30]         2,401,000          
Cost [1],[3],[5],[12],[30]         2,695,000          
Investment, Identifier [Axis]: British Engineering Services Holdco Limited, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 7,738,000 [8],[9],[13],[14],[16],[38]   7,738,000 [8],[9],[13],[14],[16],[38]   7,542,000 [1],[3],[5],[12],[19],[39]          
Cost 8,253,000 [8],[9],[13],[14],[16],[38]   8,253,000 [8],[9],[13],[14],[16],[38]   7,930,000 [1],[3],[5],[12],[19],[39]          
Investment, Identifier [Axis]: Broadstone Group UK LTD, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [8],[9],[13],[14],[16],[38] 3,278,000   3,278,000              
Cost [8],[9],[13],[14],[16],[38] 3,084,000   3,084,000              
Investment, Identifier [Axis]: Bucharest Bidco Limited, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value [3],[5],[11],[12],[28]         171,000          
Cost [3],[5],[11],[12],[28]         170,000          
Investment, Identifier [Axis]: Bucharest Bidco Limited, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value [3],[5],[11],[12],[39]         760,000          
Cost [3],[5],[11],[12],[39]         833,000          
Investment, Identifier [Axis]: Burgess Point Purchaser Corporation, LP Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 414,000 [7],[9],[26]   414,000 [7],[9],[26]   450,000 [5],[11],[25]          
Cost 455,000 [7],[9],[26]   455,000 [7],[9],[26]   455,000 [5],[11],[25]          
Investment, Identifier [Axis]: Burgess Point Purchaser Corporation, Second Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 4,100,000 [9],[14],[16],[17]   4,100,000 [9],[14],[16],[17]   4,364,000 [1],[3],[5],[28]          
Cost 4,432,000 [9],[14],[16],[17]   4,432,000 [9],[14],[16],[17]   4,406,000 [1],[3],[5],[28]          
Investment, Identifier [Axis]: CAi Software, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[2],[3],[4],[5],[11]         17,435,000          
Cost [1],[2],[3],[4],[5],[11]         17,290,000          
Investment, Identifier [Axis]: CAi Software, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [2],[3],[5],[11],[19]         1,848,000          
Cost [2],[3],[5],[11],[19]         1,814,000          
Investment, Identifier [Axis]: CCFF Buyer, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 3,119,000 [9],[13],[14],[16],[27]   3,119,000 [9],[13],[14],[16],[27]   3,117,000 [1],[2],[3],[5],[19]          
Cost 3,094,000 [9],[13],[14],[16],[27]   3,094,000 [9],[13],[14],[16],[27]   3,103,000 [1],[2],[3],[5],[19]          
Investment, Identifier [Axis]: CCFF Buyer, LLC, LLC Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 239,000 [7],[9]   239,000 [7],[9]   226,000 [5],[11]          
Cost 224,000 [7],[9]   224,000 [7],[9]   224,000 [5],[11]          
Investment, Identifier [Axis]: CCFF Buyer, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value (9,000) [7],[9],[13],[16],[27]   (9,000) [7],[9],[13],[16],[27]   (14,000) [2],[3],[5],[11],[19]          
Cost (15,000) [7],[9],[13],[16],[27]   (15,000) [7],[9],[13],[16],[27]   (17,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: CEC Entertainment, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[17] 34,261,000   34,261,000              
Cost [7],[9],[17] 34,261,000   34,261,000              
Investment, Identifier [Axis]: CGI Parent, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 34,380,000 [9],[14],[16],[17]   34,380,000 [9],[14],[16],[17]   22,358,000 [1],[2],[3],[5]          
Cost 33,978,000 [9],[14],[16],[17]   33,978,000 [9],[14],[16],[17]   21,983,000 [1],[2],[3],[5]          
Investment, Identifier [Axis]: CGI Parent, LLC, Preferred Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,909,000 [7],[9],[26]   1,909,000 [7],[9],[26]   1,710,000 [5],[11],[25]          
Cost 722,000 [7],[9],[26]   722,000 [7],[9],[26]   722,000 [5],[11],[25]          
Investment, Identifier [Axis]: CGI Parent, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[9],[13],[16],[17]   0 [7],[9],[13],[16],[17]   0 [2],[3],[5],[11],[19]          
Cost (14,000) [7],[9],[13],[16],[17]   (14,000) [7],[9],[13],[16],[17]   (18,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: CH Buyer, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[14],[16],[17] 1,744,000   1,744,000              
Cost [9],[14],[16],[17] 1,741,000   1,741,000              
Investment, Identifier [Axis]: CH Buyer, LLC, LLC Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[26] 143,000   143,000              
Cost [7],[9],[26] 139,000   139,000              
Investment, Identifier [Axis]: CH Buyer, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[13],[16],[17] (2,000)   (2,000)              
Cost [7],[9],[13],[16],[17] (2,000)   (2,000)              
Investment, Identifier [Axis]: CIFC Funding 2022-VI, Ltd., Subordinated Structured Notes                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,132,000 [7],[8],[16],[17]   1,132,000 [7],[8],[16],[17]   1,149,000 [2],[3],[11],[12]          
Cost 1,125,000 [7],[8],[16],[17]   1,125,000 [7],[8],[16],[17]   1,125,000 [2],[3],[11],[12]          
Investment, Identifier [Axis]: CIFC Funding 2024-IV, Ltd., Subordinated Structured Notes                    
Schedule of Investments [Line Items]                    
Total investments at fair value 2,905,000 [7],[8],[16],[17]   2,905,000 [7],[8],[16],[17]   2,960,000 [2],[3],[11],[12]          
Cost 2,875,000 [7],[8],[16],[17]   2,875,000 [7],[8],[16],[17]   2,875,000 [2],[3],[11],[12]          
Investment, Identifier [Axis]: CM Acquisition Holding Inc., First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[2],[3],[5]         1,087,000          
Cost [1],[2],[3],[5]         1,117,000          
Investment, Identifier [Axis]: CM Acquisition Holding Inc., First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[2],[3],[5]         9,563,000          
Cost [1],[2],[3],[5]         9,825,000          
Investment, Identifier [Axis]: CM Acquisitions Holdings Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[14],[16],[27] 10,945,000   10,945,000              
Cost [9],[14],[16],[27] 10,984,000   10,984,000              
Investment, Identifier [Axis]: CMG Media Corp, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[16],[17],[20] 11,253,000   11,253,000              
Cost [7],[16],[17],[20] 11,366,000   11,366,000              
Investment, Identifier [Axis]: CNSL 2025-1A, Subordinated Structured Notes                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7] 14,718,000   14,718,000              
Cost [7] 14,000,000   14,000,000              
Investment, Identifier [Axis]: CPCF BPCC LLC                    
Schedule of Investments [Line Items]                    
Total investments at fair value 8,000   8,000   8,889,000          
Cost 500,000   500,000   9,200,000          
Investment, Identifier [Axis]: CPCF BPCC LLC, Member Interest                    
Schedule of Investments [Line Items]                    
Total investments at fair value 8,000 [7],[8],[43],[46]   8,000 [7],[8],[43],[46]   8,889,000 [11],[12],[47],[48] $ 7,763,000        
Cost 487,000 [7],[8],[43],[46]   487,000 [7],[8],[43],[46]   9,193,000 [11],[12],[47],[48]          
Investment, Identifier [Axis]: CPM Holdings, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [16],[17],[20] 1,988,000   1,988,000              
Cost [16],[17],[20] 1,995,000   1,995,000              
Investment, Identifier [Axis]: CTI Foods Holdings Co., LLC, 2024 LIFO Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [2],[3],[5],[11]         8,421,000          
Cost [2],[3],[5],[11]         8,133,000          
Investment, Identifier [Axis]: CTI Foods Holdings Co., LLC, Common Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value 2,887,000 [7],[9],[26]   2,887,000 [7],[9],[26]   1,390,000 [5],[11],[25]          
Cost 0 [7],[9],[26]   0 [7],[9],[26]   0 [5],[11],[25]          
Investment, Identifier [Axis]: CTI Foods Holdings Co., LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[16],[17] 17,876,000   17,876,000              
Cost [7],[9],[16],[17] 17,553,000   17,553,000              
Investment, Identifier [Axis]: CTI Foods Holdings Co., LLC, First Out Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [2],[3],[5],[11]         5,721,000          
Cost [2],[3],[5],[11]         5,594,000          
Investment, Identifier [Axis]: CTI Foods Holdings Co., LLC, First Out Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[16],[17] 4,629,000   4,629,000              
Cost [7],[9],[16],[17] 4,571,000   4,571,000              
Investment, Identifier [Axis]: CTI Foods Holdings Co., LLC, First Out Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[16],[17] 1,713,000   1,713,000              
Cost [7],[9],[16],[17] 1,713,000   1,713,000              
Investment, Identifier [Axis]: CTI Foods Holdings Co., LLC, Last In First Out Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[16],[17] 9,392,000   9,392,000              
Cost [7],[9],[16],[17] 9,191,000   9,191,000              
Investment, Identifier [Axis]: CTI Foods Holdings Co., LLC, Second Out Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,321,000 [7],[9],[16],[17]   1,321,000 [7],[9],[16],[17]   1,193,000 [2],[3],[5],[11]          
Cost 1,321,000 [7],[9],[16],[17]   1,321,000 [7],[9],[16],[17]   1,193,000 [2],[3],[5],[11]          
Investment, Identifier [Axis]: CW Group Holdings, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 8,061,000 [9],[13],[14],[16],[17]   8,061,000 [9],[13],[14],[16],[17]   4,004,000 [1],[2],[3],[5]          
Cost 7,886,000 [9],[13],[14],[16],[17]   7,886,000 [9],[13],[14],[16],[17]   3,967,000 [1],[2],[3],[5]          
Investment, Identifier [Axis]: Caldwell & Gregory LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 42,486,000 [9],[13],[14],[16],[17],[18]   42,486,000 [9],[13],[14],[16],[17],[18]   37,666,000 [1],[2],[3],[5],[19]          
Cost 42,009,000 [9],[13],[14],[16],[17],[18]   42,009,000 [9],[13],[14],[16],[17],[18]   37,659,000 [1],[2],[3],[5],[19]          
Investment, Identifier [Axis]: Caldwell & Gregory LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[9],[13],[16],[17]   0 [7],[9],[13],[16],[17]   (69,000) [2],[3],[5],[11],[19]          
Cost (50,000) [7],[9],[13],[16],[17]   (50,000) [7],[9],[13],[16],[17]   (69,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: Canadian Orthodontic Partners Corp., Class A Equity                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[8],[9],[26]   0 [7],[8],[9],[26]   0 [5],[11],[12],[25]          
Cost 389,000 [7],[8],[9],[26]   389,000 [7],[8],[9],[26]   389,000 [5],[11],[12],[25]          
Investment, Identifier [Axis]: Canadian Orthodontic Partners Corp., Class C - Warrants                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[8],[9],[26]   0 [7],[8],[9],[26]   0 [5],[11],[12],[25]          
Cost 0 [7],[8],[9],[26]   0 [7],[8],[9],[26]   0 [5],[11],[12],[25]          
Investment, Identifier [Axis]: Canadian Orthodontic Partners Corp., Class X Equity                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[8],[9],[26]   0 [7],[8],[9],[26]   0 [5],[11],[12],[25]          
Cost 35,000 [7],[8],[9],[26]   35,000 [7],[8],[9],[26]   35,000 [5],[11],[12],[25]          
Investment, Identifier [Axis]: Canadian Orthodontic Partners Corp., Common Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[8],[9],[26]   0 [7],[8],[9],[26]   0 [5],[11],[12],[25]          
Cost 0 [7],[8],[9],[26]   0 [7],[8],[9],[26]   0 [5],[11],[12],[25]          
Investment, Identifier [Axis]: Canadian Orthodontic Partners Corp., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 601,000 [8],[9],[14],[16],[29],[49]   601,000 [8],[9],[14],[16],[29],[49]   950,000 [1],[3],[5],[12],[45],[50]          
Cost 4,893,000 [8],[9],[14],[16],[29],[49]   4,893,000 [8],[9],[14],[16],[29],[49]   4,909,000 [1],[3],[5],[12],[45],[50]          
Investment, Identifier [Axis]: Canadian Orthodontic Partners Corp., Super Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 257,000 [8],[9],[13],[14]   257,000 [8],[9],[13],[14]   185,000 [1],[5],[12],[19]          
Cost 87,000 [8],[9],[13],[14]   87,000 [8],[9],[13],[14]   64,000 [1],[5],[12],[19]          
Investment, Identifier [Axis]: Caribou Holding Company, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[2],[3],[5],[12]         3,832,000          
Cost [1],[2],[3],[5],[12]         3,877,000          
Investment, Identifier [Axis]: Caribou Holding Company, LLC, LLC Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value [5],[11],[12],[25]         617,000          
Cost [5],[11],[12],[25]         617,000          
Investment, Identifier [Axis]: Carriage Purchaser Inc, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[15],[16],[18] 0   0              
Cost [7],[15],[16],[18] (2,000)   (2,000)              
Investment, Identifier [Axis]: Cascade Residential Services LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 21,193,000 [9],[14],[16],[17]   21,193,000 [9],[14],[16],[17]   9,973,000 [1],[2],[3],[5],[19]          
Cost 21,165,000 [9],[14],[16],[17]   21,165,000 [9],[14],[16],[17]   10,469,000 [1],[2],[3],[5],[19]          
Investment, Identifier [Axis]: Cascade Residential Services LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value (19,000) [7],[9],[13],[16],[17]   (19,000) [7],[9],[13],[16],[17]   1,219,000 [2],[3],[5],[11]          
Cost (22,000) [7],[9],[13],[16],[17]   (22,000) [7],[9],[13],[16],[17]   1,268,000 [2],[3],[5],[11]          
Investment, Identifier [Axis]: Centralis Finco S.a.r.l., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[11],[12],[22]         717,000          
Cost [1],[3],[5],[11],[12],[22]         716,000          
Investment, Identifier [Axis]: Centralis Finco S.a.r.l., First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[8],[9],[14],[16],[21] 1,455,000   1,455,000              
Cost [7],[8],[9],[14],[16],[21] 1,336,000   1,336,000              
Investment, Identifier [Axis]: Ceres Pharma NV, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[12],[30]         4,333,000          
Cost [1],[3],[5],[12],[30]         4,653,000          
Investment, Identifier [Axis]: Ceres Pharma NV, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value [8],[9],[14],[16],[31] 4,887,000   4,887,000              
Cost [8],[9],[14],[16],[31] 4,668,000   4,668,000              
Investment, Identifier [Axis]: Ceres Pharma NV, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value [8],[9],[13],[14],[16],[21] 2,310,000   2,310,000              
Cost [8],[9],[13],[14],[16],[21] 2,213,000   2,213,000              
Investment, Identifier [Axis]: CloudOne Digital Corp., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[14],[16],[17] 34,034,000   34,034,000              
Cost [9],[14],[16],[17] 34,042,000   34,042,000              
Investment, Identifier [Axis]: CloudOne Digital Corp., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[13],[16],[17] (95,000)   (95,000)              
Cost [7],[9],[13],[16],[17] (92,000)   (92,000)              
Investment, Identifier [Axis]: Coastal Marina Holdings, LLC, LLC Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 9,992,000 [9],[26],[43]   9,992,000 [9],[26],[43]   8,426,000 [5],[25],[48],[51] 6,080,000 [51]        
Cost 8,248,000 [9],[26],[43]   8,248,000 [9],[26],[43]   8,248,000 [5],[25],[48]          
Investment, Identifier [Axis]: Coastal Marina Holdings, LLC, Subordinated Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[43] 7,931,000   7,931,000              
Cost [7],[9],[43] 7,883,000   7,883,000              
Investment, Identifier [Axis]: Coastal Marina Holdings, LLC, Subordinated Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value 7,931,000   7,931,000   7,885,000 [5],[11],[48]          
Cost [5],[11],[48]         7,845,000          
Investment, Identifier [Axis]: Coastal Marina Holdings, LLC, Subordinated Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value [51]         7,885,000 7,824,000        
Investment, Identifier [Axis]: Coastal Marina Holdings, LLC, Subordinated Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value 3,656,000 [7],[9],[43]   3,656,000 [7],[9],[43]   3,635,000 [5],[11],[48],[51] 3,434,000 [51]        
Cost 3,675,000 [7],[9],[43]   3,675,000 [7],[9],[43]   3,661,000 [5],[11],[48]          
Investment, Identifier [Axis]: Cobham Slip Rings SAS, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 3,064,000 [8],[9],[14],[16],[17]   3,064,000 [8],[9],[14],[16],[17]   3,091,000 [1],[3],[5],[12],[28]          
Cost 3,062,000 [8],[9],[14],[16],[17]   3,062,000 [8],[9],[14],[16],[17]   3,051,000 [1],[3],[5],[12],[28]          
Investment, Identifier [Axis]: Coherus Biosciences, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 9,908,000 [7],[9],[16],[17]   9,908,000 [7],[9],[16],[17]   9,758,000 [2],[3],[5],[11]          
Cost 9,743,000 [7],[9],[16],[17]   9,743,000 [7],[9],[16],[17]   9,707,000 [2],[3],[5],[11]          
Investment, Identifier [Axis]: Coherus Biosciences, Inc., Royalty Rights                    
Schedule of Investments [Line Items]                    
Total investments at fair value 3,953,000 [9]   3,953,000 [9]   14,583,000 [5]          
Cost 3,295,000 [9]   3,295,000 [9]   9,066,000 [5]          
Investment, Identifier [Axis]: Compass Precision, LLC, LLC Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 344,000 [9],[26]   344,000 [9],[26]   154,000 [5],[25]          
Cost 125,000 [9],[26]   125,000 [9],[26]   125,000 [5],[25]          
Investment, Identifier [Axis]: Compass Precision, LLC, Senior Subordinated Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 653,000 [7],[9],[14]   653,000 [7],[9],[14]   640,000 [1],[5],[11]          
Cost 653,000 [7],[9],[14]   653,000 [7],[9],[14]   641,000 [1],[5],[11]          
Investment, Identifier [Axis]: Comply365, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 23,937,000 [9],[14],[16],[17]   23,937,000 [9],[14],[16],[17]   24,120,000 [1],[3],[5],[24]          
Cost 23,610,000 [9],[14],[16],[17]   23,610,000 [9],[14],[16],[17]   23,737,000 [1],[3],[5],[24]          
Investment, Identifier [Axis]: Comply365, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[9],[13],[16],[17]   0 [7],[9],[13],[16],[17]   0 [3],[5],[11],[19],[24]          
Cost (5,000) [7],[9],[13],[16],[17]   (5,000) [7],[9],[13],[16],[17]   (6,000) [3],[5],[11],[19],[24]          
Investment, Identifier [Axis]: Connect Holdings 2, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [16],[17],[20] 9,964,000   9,964,000              
Cost [16],[17],[20] 10,040,000   10,040,000              
Investment, Identifier [Axis]: Consilio, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [16],[17],[20] 3,786,000   3,786,000              
Cost [16],[17],[20] 3,609,000   3,609,000              
Investment, Identifier [Axis]: Consolidated Communications Holdings Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [3],[11],[12],[24]         6,833,000          
Cost [3],[11],[12],[24]         6,671,000          
Investment, Identifier [Axis]: Contabo Finco S.A.R.L, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[12],[22]         10,022,000          
Cost [1],[3],[5],[12],[22]         9,468,000          
Investment, Identifier [Axis]: Contabo FincoS.À R.L, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [8],[9],[14],[16],[21] 11,372,000   11,372,000              
Cost [8],[9],[14],[16],[21] 9,496,000   9,496,000              
Investment, Identifier [Axis]: Copeland (Emerson), First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value [16],[17],[20] 1,988,000   1,988,000              
Cost [16],[17],[20] 1,995,000   1,995,000              
Investment, Identifier [Axis]: Copeland (Emerson), First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value [16],[17],[20] 6,949,000   6,949,000              
Cost [16],[17],[20] 6,965,000   6,965,000              
Investment, Identifier [Axis]: Cosmelux International, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 2,817,000 [8],[9],[14],[16],[21]   2,817,000 [8],[9],[14],[16],[21]   2,533,000 [1],[3],[5],[12],[22]          
Cost 2,742,000 [8],[9],[14],[16],[21]   2,742,000 [8],[9],[14],[16],[21]   2,727,000 [1],[3],[5],[12],[22]          
Investment, Identifier [Axis]: Cosmelux International, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value (11,000) [7],[8],[9],[13],[16],[21]   (11,000) [7],[8],[9],[13],[16],[21]   (5,000) [3],[5],[11],[12],[19],[22]          
Cost (2,000) [7],[8],[9],[13],[16],[21]   (2,000) [7],[8],[9],[13],[16],[21]   (2,000) [3],[5],[11],[12],[19],[22]          
Investment, Identifier [Axis]: Coyo Uprising GmbH, Class A Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 291,000 [7],[8],[9],[26]   291,000 [7],[8],[9],[26]   249,000 [5],[11],[12],[25]          
Cost 248,000 [7],[8],[9],[26]   248,000 [7],[8],[9],[26]   248,000 [5],[11],[12],[25]          
Investment, Identifier [Axis]: Coyo Uprising GmbH, Class B Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 547,000 [7],[8],[9],[26]   547,000 [7],[8],[9],[26]   461,000 [5],[11],[12],[25]          
Cost 538,000 [7],[8],[9],[26]   538,000 [7],[8],[9],[26]   538,000 [5],[11],[12],[25]          
Investment, Identifier [Axis]: Coyo Uprising GmbH, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 12,110,000 [8],[9],[13],[14],[16],[31]   12,110,000 [8],[9],[13],[14],[16],[31]   10,407,000 [1],[3],[5],[12],[19],[22]          
Cost 12,113,000 [8],[9],[13],[14],[16],[31]   12,113,000 [8],[9],[13],[14],[16],[31]   11,802,000 [1],[3],[5],[12],[19],[22]          
Investment, Identifier [Axis]: DAWGS Intermediate Holdings Co., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[14],[16],[17] 9,902,000   9,902,000              
Cost [9],[14],[16],[17] 9,890,000   9,890,000              
Investment, Identifier [Axis]: DAWGS Intermediate Holdings Co., LLC Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[26] 590,000   590,000              
Cost [7],[9],[26] 510,000   510,000              
Investment, Identifier [Axis]: DAWGS Intermediate Holdings Co., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[13],[16],[17] 353,000   353,000              
Cost [7],[9],[13],[16],[17] 350,000   350,000              
Investment, Identifier [Axis]: DIRECTV, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[16],[17] 0   0              
Cost [7],[16],[17] (26,000)   (26,000)              
Investment, Identifier [Axis]: DISA Holdings Corp., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 12,740,000 [9],[13],[14],[15],[16],[18]   12,740,000 [9],[13],[14],[15],[16],[18]   10,639,000 [1],[2],[3],[4],[5],[19]          
Cost 12,564,000 [9],[13],[14],[15],[16],[18]   12,564,000 [9],[13],[14],[15],[16],[18]   10,422,000 [1],[2],[3],[4],[5],[19]          
Investment, Identifier [Axis]: DISA Holdings Corp., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 256,000 [7],[9],[13],[15],[16]   256,000 [7],[9],[13],[15],[16]   0 [2],[3],[5],[11],[19]          
Cost 240,000 [7],[9],[13],[15],[16]   240,000 [7],[9],[13],[15],[16]   (20,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: DataServ Integrations, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[28]         1,871,000          
Cost [1],[3],[5],[28]         1,841,000          
Investment, Identifier [Axis]: DataServ Integrations, LLC, Preferred Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 193,000 [7],[9],[26]   193,000 [7],[9],[26]   103,000 [5],[11],[25]          
Cost 192,000 [7],[9],[26]   192,000 [7],[9],[26]   96,000 [5],[11],[25]          
Investment, Identifier [Axis]: DataServ Integrations, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [3],[5],[11],[19],[28]         0          
Cost [3],[5],[11],[19],[28]         (6,000)          
Investment, Identifier [Axis]: David Wood Baking UK Ltd, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 13,064,000 [7],[8],[9],[16],[38]   13,064,000 [7],[8],[9],[16],[38]   12,270,000 [3],[5],[11],[12],[39]          
Cost 12,378,000 [7],[8],[9],[16],[38]   12,378,000 [7],[8],[9],[16],[38]   12,299,000 [3],[5],[11],[12],[39]          
Investment, Identifier [Axis]: DecksDirect, LLC, Class A Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[9],[26]   0 [7],[9],[26]   0 [5],[11],[25]          
Cost 47,000 [7],[9],[26]   47,000 [7],[9],[26]   47,000 [5],[11],[25]          
Investment, Identifier [Axis]: DecksDirect, LLC, Common Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[9],[26]   0 [7],[9],[26]   0 [5],[11],[25]          
Cost 55,000 [7],[9],[26]   55,000 [7],[9],[26]   55,000 [5],[11],[25]          
Investment, Identifier [Axis]: DecksDirect, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,070,000 [9],[14],[16],[17]   1,070,000 [9],[14],[16],[17]   1,383,000 [1],[2],[3],[5]          
Cost 1,498,000 [9],[14],[16],[17]   1,498,000 [9],[14],[16],[17]   1,552,000 [1],[2],[3],[5]          
Investment, Identifier [Axis]: DecksDirect, LLC, Preferred Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9] 0   0              
Cost [7],[9] 10,000   10,000              
Investment, Identifier [Axis]: DecksDirect, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value (14,000) [7],[9],[13],[16],[17]   (14,000) [7],[9],[13],[16],[17]   301,000 [2],[3],[5],[11],[19]          
Cost 95,000 [7],[9],[13],[16],[17]   95,000 [7],[9],[13],[16],[17]   343,000 [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: DexKo, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [13],[15],[16],[20] 887,000   887,000              
Cost [13],[15],[16],[20] 877,000   877,000              
Investment, Identifier [Axis]: Diameter Capital CLO 8 Ltd., Subordinated Structured Notes                    
Schedule of Investments [Line Items]                    
Total investments at fair value 3,799,000 [7],[8],[16],[17]   3,799,000 [7],[8],[16],[17]   3,770,000 [2],[3],[11],[12]          
Cost 3,750,000 [7],[8],[16],[17]   3,750,000 [7],[8],[16],[17]   3,750,000 [2],[3],[11],[12]          
Investment, Identifier [Axis]: Discovery Buyer, L.P., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[13],[14],[16],[17] 15,703,000   15,703,000              
Cost [9],[13],[14],[16],[17] 15,671,000   15,671,000              
Investment, Identifier [Axis]: Discovery Buyer, L.P., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[13],[16],[17] (22,000)   (22,000)              
Cost [7],[9],[13],[16],[17] (25,000)   (25,000)              
Investment, Identifier [Axis]: Diversified Packaging Holdings LLC, LLC Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 545,000 [9]   545,000 [9]   416,000 [5],[25]          
Cost 346,000 [9]   346,000 [9]   346,000 [5],[25]          
Investment, Identifier [Axis]: Diversified Packaging Holdings LLC, Second Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,003,000 [9],[14],[16]   1,003,000 [9],[14],[16]   896,000 [1],[3],[5]          
Cost 1,003,000 [9],[14],[16]   1,003,000 [9],[14],[16]   894,000 [1],[3],[5]          
Investment, Identifier [Axis]: Dragon Bidco, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[12],[22]         1,241,000          
Cost [1],[3],[5],[12],[22]         1,345,000          
Investment, Identifier [Axis]: DreamStart BidCo SAS (d/b/a SmartTrade), First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[11],[12],[22]         828,000          
Cost [1],[3],[5],[11],[12],[22]         952,000          
Investment, Identifier [Axis]: Dune Group, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[12],[19],[22]         222,000          
Cost [1],[3],[5],[12],[19],[22]         295,000          
Investment, Identifier [Axis]: Dune Group, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[2],[3],[5],[12]         4,565,000          
Cost [1],[2],[3],[5],[12]         4,775,000          
Investment, Identifier [Axis]: Dune Group, First Lien Senior Secured Term Loan 3                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[2],[3],[5],[12]         482,000          
Cost [1],[2],[3],[5],[12]         510,000          
Investment, Identifier [Axis]: Dunlipharder B.V., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,000,000 [8],[9],[14],[16],[17]   1,000,000 [8],[9],[14],[16],[17]   998,000 [1],[2],[3],[5],[12]          
Cost 992,000 [8],[9],[14],[16],[17]   992,000 [8],[9],[14],[16],[17]   991,000 [1],[2],[3],[5],[12]          
Investment, Identifier [Axis]: Durare Bidco, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[13],[14],[16],[17] 43,982,000   43,982,000              
Cost [9],[13],[14],[16],[17] 43,992,000   43,992,000              
Investment, Identifier [Axis]: Durare Bidco, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[13],[16],[17] (117,000)   (117,000)              
Cost [7],[9],[13],[16],[17] (115,000)   (115,000)              
Investment, Identifier [Axis]: Dwyer Instruments, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 6,598,000 [9],[14],[16],[17]   6,598,000 [9],[14],[16],[17]   6,703,000 [1],[2],[3],[5]          
Cost 6,548,000 [9],[14],[16],[17]   6,548,000 [9],[14],[16],[17]   6,721,000 [1],[2],[3],[5]          
Investment, Identifier [Axis]: Dwyer Instruments, Inc., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[14],[16],[17] 129,000   129,000              
Cost [9],[14],[16],[17] 127,000   127,000              
Investment, Identifier [Axis]: EB Development, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 7,503,000 [8],[9],[13],[14],[16],[21]   7,503,000 [8],[9],[13],[14],[16],[21]   7,346,000 [1],[3],[5],[12],[19],[22]          
Cost 6,669,000 [8],[9],[13],[14],[16],[21]   6,669,000 [8],[9],[13],[14],[16],[21]   7,439,000 [1],[3],[5],[12],[19],[22]          
Investment, Identifier [Axis]: EFC International, Common Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value 219,000 [9],[26]   219,000 [9],[26]   328,000 [5],[25]          
Cost 199,000 [9],[26]   199,000 [9],[26]   199,000 [5],[25]          
Investment, Identifier [Axis]: EFC International, Senior Unsecured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 705,000 [7],[9]   705,000 [7],[9]   686,000 [5],[11]          
Cost 693,000 [7],[9]   693,000 [7],[9]   678,000 [5],[11]          
Investment, Identifier [Axis]: EMI Porta Holdco LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 39,841,000 [9],[14],[16],[17]   39,841,000 [9],[14],[16],[17]   42,351,000 [1],[2],[3],[5]          
Cost 42,974,000 [9],[14],[16],[17]   42,974,000 [9],[14],[16],[17]   44,275,000 [1],[2],[3],[5]          
Investment, Identifier [Axis]: EMI Porta Holdco LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 468,000 [7],[9],[13],[15],[16]   468,000 [7],[9],[13],[15],[16]   465,000 [2],[3],[5],[11],[19]          
Cost 642,000 [7],[9],[13],[15],[16]   642,000 [7],[9],[13],[15],[16]   585,000 [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: EZ SMBO Bidco, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[8],[9] 395,000   395,000              
Cost [7],[8],[9] 367,000   367,000              
Investment, Identifier [Axis]: EZ SMBO Bidco, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value [8],[9],[14],[16],[49] 714,000   714,000              
Cost [8],[9],[14],[16],[49] 716,000   716,000              
Investment, Identifier [Axis]: EZ SMBO Bidco, First Lien Senior Secured Term Loan 3                    
Schedule of Investments [Line Items]                    
Total investments at fair value [8],[9],[13],[14],[16],[31] 1,047,000   1,047,000              
Cost [8],[9],[13],[14],[16],[31] 962,000   962,000              
Investment, Identifier [Axis]: Echo Global Logistics, Inc., Partnership Equity                    
Schedule of Investments [Line Items]                    
Total investments at fair value 224,000 [7],[9],[26]   224,000 [7],[9],[26]   352,000 [5],[11],[25]          
Cost 448,000 [7],[9],[26]   448,000 [7],[9],[26]   448,000 [5],[11],[25]          
Investment, Identifier [Axis]: Echo Global Logistics, Inc., Second Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 16,006,000 [9],[14],[15],[16]   16,006,000 [9],[14],[15],[16]   16,400,000 [1],[3],[5],[24]          
Cost 16,258,000 [9],[14],[15],[16]   16,258,000 [9],[14],[15],[16]   16,233,000 [1],[3],[5],[24]          
Investment, Identifier [Axis]: Eclipse Business Capital Holdings LLC                    
Schedule of Investments [Line Items]                    
Total investments at fair value                 $ 63,400,000  
Investment, Identifier [Axis]: Eclipse Business Capital Holdings LLC, Revolver, Funded                    
Schedule of Investments [Line Items]                    
Total investments at fair value 4,900,000   4,900,000   7,100,000          
Investment, Identifier [Axis]: Eclipse Business Capital Holdings LLC, Revolver, Unfunded                    
Schedule of Investments [Line Items]                    
Total investments at fair value               $ 16,000,000 9,600,000  
Investment, Identifier [Axis]: Eclipse Business Capital Holdings LLC, Second Lien Senior Secured Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value                 $ 3,200,000  
Investment, Identifier [Axis]: Eclipse Business Capital, LLC Second Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 3,209,000   3,209,000   3,209,000 [51] 3,209,000 [51]        
Investment, Identifier [Axis]: Eclipse Business Capital, LLC, LLC Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 98,497,000 [7],[9],[43]   98,497,000 [7],[9],[43]   96,603,000 [5],[11],[48]          
Cost 65,683,000 [7],[9],[43]   65,683,000 [7],[9],[43]   65,667,000 [5],[11],[48]          
Investment, Identifier [Axis]: Eclipse Business Capital, LLC, LLC units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 98,497,000   98,497,000   96,603,000 [51] 102,917,000 [51]        
Investment, Identifier [Axis]: Eclipse Business Capital, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 4,941,000 [7],[9],[13],[15],[16],[43]   4,941,000 [7],[9],[13],[15],[16],[43]   7,123,000 [3],[5],[11],[19],[24],[48]          
Cost 4,902,000 [7],[9],[13],[15],[16],[43]   4,902,000 [7],[9],[13],[15],[16],[43]   7,074,000 [3],[5],[11],[19],[24],[48]          
Investment, Identifier [Axis]: Eclipse Business Capital, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 4,941,000   4,941,000   7,123,000 [51] 3,915,000 [51]        
Investment, Identifier [Axis]: Eclipse Business Capital, LLC, Second Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 3,209,000 [7],[9],[43]   3,209,000 [7],[9],[43]   3,209,000 [5],[11],[48]          
Cost 3,194,000 [7],[9],[43]   3,194,000 [7],[9],[43]   3,190,000 [5],[11],[48]          
Investment, Identifier [Axis]: Electric Equipment & Engineering Co., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 316,000 [9],[14]   316,000 [9],[14]   307,000 [1],[5]          
Cost 313,000 [9],[14]   313,000 [9],[14]   307,000 [1],[5]          
Investment, Identifier [Axis]: Electric Equipment & Engineering Co., LLC Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 306,000 [7],[9],[26]   306,000 [7],[9],[26]   188,000 [5],[11],[25]          
Cost 188,000 [7],[9],[26]   188,000 [7],[9],[26]   188,000 [5],[11],[25]          
Investment, Identifier [Axis]: Electrical Components International, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [3],[5],[11],[19],[28]         20,819,000          
Cost [3],[5],[11],[19],[28]         20,838,000          
Investment, Identifier [Axis]: Ellkay, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[2],[3],[5]         5,072,000          
Cost [1],[2],[3],[5]         5,687,000          
Investment, Identifier [Axis]: Elmwood CLO 29 Ltd., Subordinated Structured Notes                    
Schedule of Investments [Line Items]                    
Total investments at fair value 2,507,000 [7],[8],[16],[17]   2,507,000 [7],[8],[16],[17]   2,576,000 [2],[3],[11],[12]          
Cost 2,514,000 [7],[8],[16],[17]   2,514,000 [7],[8],[16],[17]   2,515,000 [2],[3],[11],[12]          
Investment, Identifier [Axis]: Entact Environmental Services, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,778,000 [14],[16],[17],[18]   1,778,000 [14],[16],[17],[18]   1,850,000 [1],[2],[3],[4],[5]          
Cost 1,786,000 [14],[16],[17],[18]   1,786,000 [14],[16],[17],[18]   1,862,000 [1],[2],[3],[4],[5]          
Investment, Identifier [Axis]: Eurofins Digital Testing International LUX Holding SARL, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value 617,000 [8],[9],[14],[16],[29],[31]   617,000 [8],[9],[14],[16],[29],[31]   830,000 [1],[3],[5],[12],[30],[45]          
Cost 1,554,000 [8],[9],[14],[16],[29],[31]   1,554,000 [8],[9],[14],[16],[29],[31]   1,497,000 [1],[3],[5],[12],[30],[45]          
Investment, Identifier [Axis]: Eurofins Digital Testing International LUX Holding SARL, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value 298,000 [8],[9],[14],[16],[17],[29]   298,000 [8],[9],[14],[16],[17],[29]   453,000 [1],[2],[3],[5],[12],[45]          
Cost 830,000 [8],[9],[14],[16],[17],[29]   830,000 [8],[9],[14],[16],[17],[29]   781,000 [1],[2],[3],[5],[12],[45]          
Investment, Identifier [Axis]: Eurofins Digital Testing International LUX Holding SARL, First Lien Senior Secured Term Loan 3                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[8],[9],[16],[29],[38] 822,000   822,000              
Cost [7],[8],[9],[16],[29],[38] 1,189,000   1,189,000              
Investment, Identifier [Axis]: Eurofins Digital Testing International LUX Holding SARL, Senior Subordinated Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[8],[9],[29]   0 [7],[8],[9],[29]   0 [5],[11],[12],[45]          
Cost 640,000 [7],[8],[9],[29]   640,000 [7],[8],[9],[29]   669,000 [5],[11],[12],[45]          
Investment, Identifier [Axis]: Events Software BidCo Pty Ltd, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,426,000 [8],[9],[13],[14],[16],[35]   1,426,000 [8],[9],[13],[14],[16],[35]   1,336,000 [1],[3],[5],[12],[19],[34]          
Cost 1,823,000 [8],[9],[13],[14],[16],[35]   1,823,000 [8],[9],[13],[14],[16],[35]   1,842,000 [1],[3],[5],[12],[19],[34]          
Investment, Identifier [Axis]: Expert Institute Group Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[13],[14],[16],[17] 3,752,000   3,752,000              
Cost [9],[13],[14],[16],[17] 3,745,000   3,745,000              
Investment, Identifier [Axis]: Expert Institute Group Inc., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[13],[16],[17] (17,000)   (17,000)              
Cost [7],[9],[13],[16],[17] (18,000)   (18,000)              
Investment, Identifier [Axis]: Express Wash Acquisition Company, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 4,866,000 [9],[14],[16],[17]   4,866,000 [9],[14],[16],[17]   5,918,000 [1],[2],[3],[5]          
Cost 4,840,000 [9],[14],[16],[17]   4,840,000 [9],[14],[16],[17]   6,268,000 [1],[2],[3],[5]          
Investment, Identifier [Axis]: Express Wash Acquisition Company, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value (1,000) [7],[9],[13],[16],[17]   (1,000) [7],[9],[13],[16],[17]   123,000 [2],[3],[5],[11],[19]          
Cost (3,000) [7],[9],[13],[16],[17]   (3,000) [7],[9],[13],[16],[17]   137,000 [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: FL Hawk Intermediate Holdings, Inc. (f/k/a Fineline Technologies, Inc.), First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 38,148,000 [9],[14],[15],[16],[18]   38,148,000 [9],[14],[15],[16],[18]   38,186,000 [1],[2],[3],[4],[5]          
Cost 38,066,000 [9],[14],[15],[16],[18]   38,066,000 [9],[14],[15],[16],[18]   38,332,000 [1],[2],[3],[4],[5]          
Investment, Identifier [Axis]: FSS Buyer LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[14],[15],[16],[17],[18] 40,511,000   40,511,000              
Cost [9],[14],[15],[16],[17],[18] 40,511,000   40,511,000              
Investment, Identifier [Axis]: FSS Buyer LLC, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value [2],[3],[4],[5]         14,923,000          
Cost [2],[3],[4],[5]         14,751,000          
Investment, Identifier [Axis]: FSS Buyer LLC, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[24]         9,113,000          
Cost [1],[3],[5],[24]         9,009,000          
Investment, Identifier [Axis]: FSS Buyer LLC, LP Interest                    
Schedule of Investments [Line Items]                    
Total investments at fair value 43,000 [9],[26]   43,000 [9],[26]   42,000 [5],[25]          
Cost 29,000 [9],[26]   29,000 [9],[26]   29,000 [5],[25]          
Investment, Identifier [Axis]: FSS Buyer LLC, LP Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 190,000 [9],[26]   190,000 [9],[26]   185,000 [5]          
Cost 128,000 [9],[26]   128,000 [9],[26]   128,000 [5]          
Investment, Identifier [Axis]: Faraday, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 3,569,000 [7],[8],[9],[14],[16],[21]   3,569,000 [7],[8],[9],[14],[16],[21]   234,000 [1],[3],[5],[12],[19],[22]          
Cost 3,295,000 [7],[8],[9],[14],[16],[21]   3,295,000 [7],[8],[9],[14],[16],[21]   223,000 [1],[3],[5],[12],[19],[22]          
Investment, Identifier [Axis]: Featherstone Bidco Limited, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [8],[9],[14],[16],[36] 2,478,000   2,478,000              
Cost [8],[9],[14],[16],[36] 2,484,000   2,484,000              
Investment, Identifier [Axis]: FinThrive Software Intermediate Holdings Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[15],[16],[20] 9,620,000   9,620,000              
Cost [9],[15],[16],[20] 9,580,000   9,580,000              
Investment, Identifier [Axis]: FinThrive Software Intermediate Holdings Inc., Preferred Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value 3,248,000 [9],[14]   3,248,000 [9],[14]   2,717,000 [1],[5]          
Cost 5,029,000 [9],[14]   5,029,000 [9],[14]   4,761,000 [1],[5]          
Investment, Identifier [Axis]: FinThrive Software Intermediate Holdings Inc., Second Out Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[15],[16] 6,647,000   6,647,000              
Cost [7],[15],[16] 6,422,000   6,422,000              
Investment, Identifier [Axis]: Finaxy Holding, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[8],[9],[13],[14],[16],[31] 9,550,000   9,550,000              
Cost [7],[8],[9],[13],[14],[16],[31] 8,729,000   8,729,000              
Investment, Identifier [Axis]: Finaxy Holding, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[12],[19],[22]         (117,000)          
Cost [1],[3],[5],[12],[19],[22]         (117,000)          
Investment, Identifier [Axis]: Finaxy Holding, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[12],[30]         4,291,000          
Cost [1],[3],[5],[12],[30]         4,361,000          
Investment, Identifier [Axis]: Findex Group Ltd, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 2,393,000 [7],[8],[9],[14],[52]   2,393,000 [7],[8],[9],[14],[52]   2,217,000 [1],[5],[12],[34]          
Cost 2,359,000 [7],[8],[9],[14],[52]   2,359,000 [7],[8],[9],[14],[52]   2,340,000 [1],[5],[12],[34]          
Investment, Identifier [Axis]: Finexvet, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 9,814,000 [7],[8],[9],[14],[16],[31]   9,814,000 [7],[8],[9],[14],[16],[31]   9,227,000 [1],[3],[5],[11],[12],[30]          
Cost 9,768,000 [7],[8],[9],[14],[16],[31]   9,768,000 [7],[8],[9],[14],[16],[31]   9,735,000 [1],[3],[5],[11],[12],[30]          
Investment, Identifier [Axis]: FitzMark Buyer, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[15],[16],[18] 4,036,000   4,036,000              
Cost [7],[9],[15],[16],[18] 4,018,000   4,018,000              
Investment, Identifier [Axis]: Fitzmark, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [3],[4],[5],[11],[24]         4,171,000          
Cost [3],[4],[5],[11],[24]         4,143,000          
Investment, Identifier [Axis]: Five Star Holding LLC, LLC Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 395,000 [9],[26]   395,000 [9],[26]   294,000 [5],[25]          
Cost 505,000 [9],[26]   505,000 [9],[26]   505,000 [5],[25]          
Investment, Identifier [Axis]: Five Star Holding LLC, Second Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 7,152,000 [9],[14],[16],[17]   7,152,000 [9],[14],[16],[17]   6,895,000 [1],[2],[3],[5]          
Cost 7,059,000 [9],[14],[16],[17]   7,059,000 [9],[14],[16],[17]   7,047,000 [1],[2],[3],[5]          
Investment, Identifier [Axis]: Flexential Issuer, LLC, Structured Secured Note - Class C                    
Schedule of Investments [Line Items]                    
Total investments at fair value 9,831,000 [7]   9,831,000 [7]   9,587,000 [11]          
Cost 9,315,000 [7]   9,315,000 [7]   9,303,000 [11]          
Investment, Identifier [Axis]: Flywheel Holdings Segregated Portfolio 2025-2, LP Interest                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[8],[9],[26] 8,415,000   8,415,000              
Cost [7],[8],[9],[26] 8,332,000   8,332,000              
Investment, Identifier [Axis]: Flywheel Re Segregated Portfolio 2022-4, Preferred Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value 4,478,000 [7],[8],[9]   4,478,000 [7],[8],[9]   6,458,000 [5],[11],[12],[25]          
Cost 4,714,000 [7],[8],[9]   4,714,000 [7],[8],[9]   4,714,000 [5],[11],[12],[25]          
Investment, Identifier [Axis]: Focus Financial Partners LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [15],[20] 1,000,000   1,000,000              
Cost [15],[20] 1,002,000   1,002,000              
Investment, Identifier [Axis]: Footco 40 Limited, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value 246,000 [8],[9],[14],[16],[21]   246,000 [8],[9],[14],[16],[21]   217,000 [1],[3],[5],[12],[22]          
Cost 223,000 [8],[9],[14],[16],[21]   223,000 [8],[9],[14],[16],[21]   223,000 [1],[3],[5],[12],[22]          
Investment, Identifier [Axis]: Footco 40 Limited, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,709,000 [8],[9],[14],[16],[36]   1,709,000 [8],[9],[14],[16],[36]   1,588,000 [1],[3],[5],[12],[19],[37]          
Cost 1,644,000 [8],[9],[14],[16],[36]   1,644,000 [8],[9],[14],[16],[36]   1,635,000 [1],[3],[5],[12],[19],[37]          
Investment, Identifier [Axis]: Forest Buyer, LLC, Class A LLC Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 278,000 [9],[26]   278,000 [9],[26]   262,000 [5],[25]          
Cost 246,000 [9],[26]   246,000 [9],[26]   246,000 [5],[25]          
Investment, Identifier [Axis]: Forest Buyer, LLC, Class B LLC Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 134,000 [9]   134,000 [9]   250,000 [5],[25]          
Cost 0 [9]   0 [9]   0 [5],[25]          
Investment, Identifier [Axis]: Forest Buyer, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 57,070,000 [9],[14],[16],[17]   57,070,000 [9],[14],[16],[17]   12,187,000 [1],[2],[3],[5]          
Cost 57,047,000 [9],[14],[16],[17]   57,047,000 [9],[14],[16],[17]   12,103,000 [1],[2],[3],[5]          
Investment, Identifier [Axis]: Forest Buyer, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value (28,000) [7],[9],[13],[16],[17]   (28,000) [7],[9],[13],[16],[17]   (4,000) [2],[3],[5],[11],[19]          
Cost (33,000) [7],[9],[13],[16],[17]   (33,000) [7],[9],[13],[16],[17]   (13,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: Fortis Payment Systems, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[2],[3],[4],[5],[19]         18,278,000          
Cost [1],[2],[3],[4],[5],[19]         18,338,000          
Investment, Identifier [Axis]: Fortis Payment Systems, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [2],[3],[5],[11],[19]         (32,000)          
Cost [2],[3],[5],[11],[19]         (25,000)          
Investment, Identifier [Axis]: Foundation Building Materials Inc, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[16],[17] 8,000   8,000              
Cost [7],[16],[17] 1,000   1,000              
Investment, Identifier [Axis]: FragilePak LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 8,902,000 [9],[16],[17],[18]   8,902,000 [9],[16],[17],[18]   8,972,000 [1],[2],[3],[5]          
Cost 8,824,000 [9],[16],[17],[18]   8,824,000 [9],[16],[17],[18]   8,860,000 [1],[2],[3],[5]          
Investment, Identifier [Axis]: FragilePak LLC, Partnership Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 729,000 [9],[26]   729,000 [9],[26]   761,000 [5],[25]          
Cost 930,000 [9],[26]   930,000 [9],[26]   930,000 [5],[25]          
Investment, Identifier [Axis]: GB Eagle Buyer, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 11,035,000 [7],[9],[13],[14],[16],[17]   11,035,000 [7],[9],[13],[14],[16],[17]   10,992,000 [1],[2],[3],[5],[11],[19]          
Cost 10,813,000 [7],[9],[13],[14],[16],[17]   10,813,000 [7],[9],[13],[14],[16],[17]   10,865,000 [1],[2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: GB Eagle Buyer, Inc., Partnership Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,890,000 [7],[9]   1,890,000 [7],[9]   1,688,000 [5],[11]          
Cost 859,000 [7],[9]   859,000 [7],[9]   859,000 [5],[11]          
Investment, Identifier [Axis]: GB Eagle Buyer, Inc., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,086,000 [9],[13],[16],[17]   1,086,000 [9],[13],[16],[17]   (29,000) [2],[3],[5],[11],[19]          
Cost 1,039,000 [9],[13],[16],[17]   1,039,000 [9],[13],[16],[17]   (57,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: GCDL LLC, Common Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value 355,000 [9]   355,000 [9]   243,000 [5],[25]          
Cost 243,000 [9]   243,000 [9]   243,000 [5],[25]          
Investment, Identifier [Axis]: GCDL LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 503,000 [9],[13],[14],[16],[17]   503,000 [9],[13],[14],[16],[17]   529,000 [1],[2],[3],[5],[19]          
Cost 503,000 [9],[13],[14],[16],[17]   503,000 [9],[13],[14],[16],[17]   529,000 [1],[2],[3],[5],[19]          
Investment, Identifier [Axis]: GCDL LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value (1,000) [7],[9],[13],[16],[17]   (1,000) [7],[9],[13],[16],[17]   (2,000) [2],[3],[5],[11],[19]          
Cost (1,000) [7],[9],[13],[16],[17]   (1,000) [7],[9],[13],[16],[17]   (2,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: GEON, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [16],[17],[20] 2,795,000   2,795,000              
Cost [16],[17],[20] 2,807,000   2,807,000              
Investment, Identifier [Axis]: GMES LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[13],[14],[16],[17] 16,274,000   16,274,000              
Cost [9],[13],[14],[16],[17] 16,275,000   16,275,000              
Investment, Identifier [Axis]: GMES LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[13],[16],[17] (27,000)   (27,000)              
Cost [7],[9],[13],[16],[17] (27,000)   (27,000)              
Investment, Identifier [Axis]: GPNZ II GmbH, Common Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [8],[9],[14],[26]   0 [8],[9],[14],[26]   0 [1],[5],[12],[25]          
Cost 0 [8],[9],[14],[26]   0 [8],[9],[14],[26]   0 [1],[5],[12],[25]          
Investment, Identifier [Axis]: GPNZ II GmbH, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value 275,000 [7],[8],[9],[13]   275,000 [7],[8],[9],[13]   271,000 [5],[11],[12]          
Cost 458,000 [7],[8],[9],[13]   458,000 [7],[8],[9],[13]   285,000 [5],[11],[12]          
Investment, Identifier [Axis]: GPNZ II GmbH, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value [3],[5],[11],[12],[19]         33,000          
Cost [3],[5],[11],[12],[19]         34,000          
Investment, Identifier [Axis]: GPNZ II GmbH, First Lien Senior Secured Term Loan 3                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [8],[9],[14],[16],[29],[40]   0 [8],[9],[14],[16],[29],[40]   189,000 [1],[3],[5],[12],[41],[45]          
Cost 444,000 [8],[9],[14],[16],[29],[40]   444,000 [8],[9],[14],[16],[29],[40]   446,000 [1],[3],[5],[12],[41],[45]          
Investment, Identifier [Axis]: Genesee & Wyoming Inc , First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [16],[17],[20] 3,401,000   3,401,000              
Cost [16],[17],[20] 3,407,000   3,407,000              
Investment, Identifier [Axis]: GenesisCare, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [8],[9],[13],[14],[16],[35] 3,260,000   3,260,000              
Cost [8],[9],[13],[14],[16],[35] 3,163,000   3,163,000              
Investment, Identifier [Axis]: Glacis Acquisition S.A.R.L., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 12,130,000 [8],[9],[13],[14],[16],[31]   12,130,000 [8],[9],[13],[14],[16],[31]   10,789,000 [1],[3],[5],[12],[19],[30]          
Cost 11,376,000 [8],[9],[13],[14],[16],[31]   11,376,000 [8],[9],[13],[14],[16],[31]   11,335,000 [1],[3],[5],[12],[19],[30]          
Investment, Identifier [Axis]: Global Academic Group Limited, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value 2,680,000 [8],[9],[14],[16],[35]   2,680,000 [8],[9],[14],[16],[35]   2,284,000 [1],[3],[5],[12],[34]          
Cost 2,765,000 [8],[9],[14],[16],[35]   2,765,000 [8],[9],[14],[16],[35]   2,530,000 [1],[3],[5],[12],[34]          
Investment, Identifier [Axis]: Global Academic Group Limited, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value 4,146,000 [8],[9],[13],[14],[16],[53]   4,146,000 [8],[9],[13],[14],[16],[53]   4,000,000 [1],[3],[5],[12],[19],[54]          
Cost 4,413,000 [8],[9],[13],[14],[16],[53]   4,413,000 [8],[9],[13],[14],[16],[53]   4,390,000 [1],[3],[5],[12],[19],[54]          
Investment, Identifier [Axis]: Global Medical Response, Inc. (f/k/a Air Medical Group Holdings), First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [15],[16],[20] 9,402,000   9,402,000              
Cost [15],[16],[20] 9,413,000   9,413,000              
Investment, Identifier [Axis]: Gojo Industries, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 24,742,000 [7],[9],[15],[16]   24,742,000 [7],[9],[15],[16]   25,143,000 [2],[3],[5],[11]          
Cost 24,247,000 [7],[9],[15],[16]   24,247,000 [7],[9],[15],[16]   25,121,000 [2],[3],[5],[11]          
Investment, Identifier [Axis]: Golub Capital Partners CLO 62(B)-R, Ltd., Subordinated Structured Notes                    
Schedule of Investments [Line Items]                    
Total investments at fair value 4,261,000 [7],[8],[16],[17]   4,261,000 [7],[8],[16],[17]   4,266,000 [2],[3],[11],[12]          
Cost 4,250,000 [7],[8],[16],[17]   4,250,000 [7],[8],[16],[17]   4,250,000 [2],[3],[11],[12]          
Investment, Identifier [Axis]: Graphpad Software, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[2],[3],[4],[5],[19]         22,798,000          
Cost [1],[2],[3],[4],[5],[19]         22,695,000          
Investment, Identifier [Axis]: Graphpad Software, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [2],[3],[5],[11],[19]         (2,000)          
Cost [2],[3],[5],[11],[19]         (10,000)          
Investment, Identifier [Axis]: Greenhill II BV, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,764,000 [8],[9],[13],[14],[16],[21]   1,764,000 [8],[9],[13],[14],[16],[21]   936,000 [1],[3],[5],[12],[19],[22]          
Cost 1,577,000 [8],[9],[13],[14],[16],[21]   1,577,000 [8],[9],[13],[14],[16],[21]   907,000 [1],[3],[5],[12],[19],[22]          
Investment, Identifier [Axis]: Groupe Guemas, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 2,712,000 [8],[9],[14],[16],[31]   2,712,000 [8],[9],[14],[16],[31]   2,374,000 [1],[3],[5],[12],[30]          
Cost 2,417,000 [8],[9],[14],[16],[31]   2,417,000 [8],[9],[14],[16],[31]   2,410,000 [1],[3],[5],[12],[30]          
Investment, Identifier [Axis]: Groupe Product Life, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[12],[19],[22]         6,110,000          
Cost [1],[3],[5],[12],[19],[22]         6,324,000          
Investment, Identifier [Axis]: Groupe Product Life, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value [8],[9],[13],[14],[16],[21] 12,692,000   12,692,000              
Cost [8],[9],[13],[14],[16],[21] 12,034,000   12,034,000              
Investment, Identifier [Axis]: HEKA Invest, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 11,007,000 [7],[8],[9],[13],[14],[16],[21]   11,007,000 [7],[8],[9],[13],[14],[16],[21]   3,902,000 [1],[3],[5],[12],[19],[22]          
Cost 9,738,000 [7],[8],[9],[13],[14],[16],[21]   9,738,000 [7],[8],[9],[13],[14],[16],[21]   3,606,000 [1],[3],[5],[12],[19],[22]          
Investment, Identifier [Axis]: HS Advisory Buyer LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[13],[14],[16],[17] 16,100,000   16,100,000              
Cost [9],[13],[14],[16],[17] 16,115,000   16,115,000              
Investment, Identifier [Axis]: HS Advisory Buyer LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[13],[16],[17] (39,000)   (39,000)              
Cost [7],[9],[13],[16],[17] (37,000)   (37,000)              
Investment, Identifier [Axis]: HSL Compliance, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [8],[9],[13],[14],[16],[36] 1,294,000   1,294,000              
Cost [8],[9],[13],[14],[16],[36] 1,234,000   1,234,000              
Investment, Identifier [Axis]: HTI Technology & Industries, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 8,240,000 [7],[9],[13],[14],[16],[18],[27]   8,240,000 [7],[9],[13],[14],[16],[18],[27]   8,303,000 [1],[2],[3],[4],[5],[11],[19]          
Cost 8,820,000 [7],[9],[13],[14],[16],[18],[27]   8,820,000 [7],[9],[13],[14],[16],[18],[27]   8,796,000 [1],[2],[3],[4],[5],[11],[19]          
Investment, Identifier [Axis]: HTI Technology & Industries, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value (64,000) [7],[9],[13],[16],[17]   (64,000) [7],[9],[13],[16],[17]   (58,000) [2],[3],[5],[11],[19]          
Cost (2,000) [7],[9],[13],[16],[17]   (2,000) [7],[9],[13],[16],[17]   (3,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: HW Holdco, LLC (Hanley Wood LLC), First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 18,047,000 [9],[14],[16],[17],[18]   18,047,000 [9],[14],[16],[17],[18]   19,210,000 [1],[2],[3],[4],[5]          
Cost 18,019,000 [9],[14],[16],[17],[18]   18,019,000 [9],[14],[16],[17],[18]   19,132,000 [1],[2],[3],[4],[5]          
Investment, Identifier [Axis]: Harmony Peace Park CLO DAC, Subordinated Structured Notes                    
Schedule of Investments [Line Items]                    
Total investments at fair value 2,523,000 [7],[8],[16],[17]   2,523,000 [7],[8],[16],[17]   2,549,000 [2],[3],[11],[12]          
Cost 2,500,000 [7],[8],[16],[17]   2,500,000 [7],[8],[16],[17]   2,500,000 [2],[3],[11],[12]          
Investment, Identifier [Axis]: Haystack Holdings LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[13],[14],[16],[18],[27] 12,574,000   12,574,000              
Cost [9],[13],[14],[16],[18],[27] 12,426,000   12,426,000              
Investment, Identifier [Axis]: Haystack Holdings LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[13],[16],[27] (2,000)   (2,000)              
Cost [7],[9],[13],[16],[27] (16,000)   (16,000)              
Investment, Identifier [Axis]: HeartHealth Bidco Pty Ltd, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 700,000 [8],[9],[13],[14],[16],[35]   700,000 [8],[9],[13],[14],[16],[35]   602,000 [1],[3],[5],[12],[19],[34]          
Cost 771,000 [8],[9],[13],[14],[16],[35]   771,000 [8],[9],[13],[14],[16],[35]   704,000 [1],[3],[5],[12],[19],[34]          
Investment, Identifier [Axis]: Heartland Veterinary Partners, LLC, Subordinated Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 7,847,000 [7],[9]   7,847,000 [7],[9]   7,126,000 [5],[11]          
Cost 8,355,000 [7],[9]   8,355,000 [7],[9]   7,672,000 [5],[11]          
Investment, Identifier [Axis]: Heavy Construction Systems Specialists, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 22,180,000 [9],[14],[16],[17],[18]   22,180,000 [9],[14],[16],[17],[18]   22,351,000 [1],[2],[3],[4],[5]          
Cost 21,985,000 [9],[14],[16],[17],[18]   21,985,000 [9],[14],[16],[17],[18]   22,114,000 [1],[2],[3],[4],[5]          
Investment, Identifier [Axis]: Heavy Construction Systems Specialists, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[9],[13],[16],[17]   0 [7],[9],[13],[16],[17]   0 [2],[3],[5],[11],[19]          
Cost (16,000) [7],[9],[13],[16],[17]   (16,000) [7],[9],[13],[16],[17]   (21,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: Heilbron (f/k/a Sucsez (Bolt Bidco B.V.)), First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[12],[30]         8,325,000          
Cost [1],[3],[5],[12],[30]         9,768,000          
Investment, Identifier [Axis]: Heilbron (f/k/a Sucsez (Bolt Bidco B.V.)), First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value [8],[9],[14],[16],[31] 4,413,000   4,413,000              
Cost [8],[9],[14],[16],[31] 4,331,000   4,331,000              
Investment, Identifier [Axis]: Heilbron (f/k/a Sucsez (Bolt Bidco B.V.)), First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value [8],[9],[14],[16],[31] 5,277,000   5,277,000              
Cost [8],[9],[14],[16],[31] 5,469,000   5,469,000              
Investment, Identifier [Axis]: HemaSource, Inc., Common Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value 243,000 [7],[9],[26]   243,000 [7],[9],[26]   227,000 [5],[11],[25]          
Cost 184,000 [7],[9],[26]   184,000 [7],[9],[26]   184,000 [5],[11],[25]          
Investment, Identifier [Axis]: HemaSource, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 7,029,000 [9],[15],[16],[18]   7,029,000 [9],[15],[16],[18]   7,626,000 [1],[3],[5],[24]          
Cost 6,902,000 [9],[15],[16],[18]   6,902,000 [9],[15],[16],[18]   7,467,000 [1],[3],[5],[24]          
Investment, Identifier [Axis]: HemaSource, Inc., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[9],[13],[15],[16]   0 [7],[9],[13],[15],[16]   0 [3],[5],[11],[19],[24]          
Cost (54,000) [7],[9],[13],[15],[16]   (54,000) [7],[9],[13],[15],[16]   (64,000) [3],[5],[11],[19],[24]          
Investment, Identifier [Axis]: Herbalife Ltd., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 5,049,000 [7],[8],[13],[15],[16]   5,049,000 [7],[8],[13],[15],[16]   13,174,000 [3],[11],[12],[24]          
Cost 4,659,000 [7],[8],[13],[15],[16]   4,659,000 [7],[8],[13],[15],[16]   12,494,000 [3],[11],[12],[24]          
Investment, Identifier [Axis]: High Street Buyer Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[13],[14],[16],[17] 1,624,000   1,624,000              
Cost [9],[13],[14],[16],[17] 1,634,000   1,634,000              
Investment, Identifier [Axis]: Home Care Assistance, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,322,000 [7],[9],[14],[16],[17]   1,322,000 [7],[9],[14],[16],[17]   1,438,000 [1],[2],[3],[5],[11]          
Cost 1,511,000 [7],[9],[14],[16],[17]   1,511,000 [7],[9],[14],[16],[17]   1,499,000 [1],[2],[3],[5],[11]          
Investment, Identifier [Axis]: HomeX Services Group LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 17,101,000 [9],[13],[14],[16],[17],[18]   17,101,000 [9],[13],[14],[16],[17],[18]   14,767,000 [1],[2],[3],[4],[5],[19]          
Cost 16,786,000 [9],[13],[14],[16],[17],[18]   16,786,000 [9],[13],[14],[16],[17],[18]   14,618,000 [1],[2],[3],[4],[5],[19]          
Investment, Identifier [Axis]: HomeX Services Group LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 338,000 [7],[9],[13],[16],[17]   338,000 [7],[9],[13],[16],[17]   (34,000) [2],[3],[5],[11],[19]          
Cost 291,000 [7],[9],[13],[16],[17]   291,000 [7],[9],[13],[16],[17]   (56,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: Honour Lane Logistics Holdings Limited, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 14,583,000 [8],[9],[14],[16],[27]   14,583,000 [8],[9],[14],[16],[27]   14,537,000 [1],[3],[5],[12],[28]          
Cost 14,361,000 [8],[9],[14],[16],[27]   14,361,000 [8],[9],[14],[16],[27]   14,312,000 [1],[3],[5],[12],[28]          
Investment, Identifier [Axis]: Hydratech Holdings, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[2],[3],[5],[19]         7,106,000          
Cost [1],[2],[3],[5],[19]         7,105,000          
Investment, Identifier [Axis]: Hydratech Holdings, Inc., First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[13],[14],[16],[17],[18] 8,577,000   8,577,000              
Cost [9],[13],[14],[16],[17],[18] 8,574,000   8,574,000              
Investment, Identifier [Axis]: Hydratech Holdings, Inc., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 489,000 [7],[9],[13],[16],[17]   489,000 [7],[9],[13],[16],[17]   254,000 [2],[3],[5],[11],[19]          
Cost 489,000 [7],[9],[13],[16],[17]   489,000 [7],[9],[13],[16],[17]   254,000 [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: Hygie 31 Holding, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[11],[12],[30]         566,000          
Cost [1],[3],[5],[11],[12],[30]         519,000          
Investment, Identifier [Axis]: ICREDITWORKS LLC, Preferred Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9] 5,316,000   5,316,000              
Cost [7],[9] 5,313,000   5,313,000              
Investment, Identifier [Axis]: ICREDITWORKS LLC, Warrants                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[26] 0   0              
Cost [7],[9],[26] 0   0              
Investment, Identifier [Axis]: IM Square, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value 4,861,000 [7],[8],[9],[14],[16],[21]   4,861,000 [7],[8],[9],[14],[16],[21]   4,255,000 [1],[3],[5],[11],[12],[22]          
Cost 4,922,000 [7],[8],[9],[14],[16],[21]   4,922,000 [7],[8],[9],[14],[16],[21]   4,908,000 [1],[3],[5],[11],[12],[22]          
Investment, Identifier [Axis]: IM Square, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value 3,760,000 [8],[9],[14],[16],[21]   3,760,000 [8],[9],[14],[16],[21]   3,254,000 [1],[3],[5],[12],[22]          
Cost 3,318,000 [8],[9],[14],[16],[21]   3,318,000 [8],[9],[14],[16],[21]   3,302,000 [1],[3],[5],[12],[22]          
Investment, Identifier [Axis]: ISTO Technologies II, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[28]         6,822,000          
Cost [1],[3],[5],[28]         6,704,000          
Investment, Identifier [Axis]: ISTO Technologies II, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [3],[5],[11],[19],[28]         (3,000)          
Cost [3],[5],[11],[19],[28]         (21,000)          
Investment, Identifier [Axis]: ITI Intermodal, Inc., Common Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value 984,000 [9],[26]   984,000 [9],[26]   915,000 [5],[25]          
Cost 750,000 [9],[26]   750,000 [9],[26]   750,000 [5],[25]          
Investment, Identifier [Axis]: ITI Intermodal, Inc., First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value 795,000 [9],[14],[16],[17],[18]   795,000 [9],[14],[16],[17],[18]   800,000 [1],[3],[4],[5],[28]          
Cost 788,000 [9],[14],[16],[17],[18]   788,000 [9],[14],[16],[17],[18]   792,000 [1],[3],[4],[5],[28]          
Investment, Identifier [Axis]: ITI Intermodal, Inc., First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value 11,986,000 [7],[9],[16],[17]   11,986,000 [7],[9],[16],[17]   12,078,000 [3],[5],[11],[28]          
Cost 11,799,000 [7],[9],[16],[17]   11,799,000 [7],[9],[16],[17]   11,834,000 [3],[5],[11],[28]          
Investment, Identifier [Axis]: ITI Intermodal, Inc., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 226,000 [7],[9],[13],[16],[17]   226,000 [7],[9],[13],[16],[17]   225,000 [3],[5],[11],[19],[28]          
Cost 209,000 [7],[9],[13],[16],[17]   209,000 [7],[9],[13],[16],[17]   203,000 [3],[5],[11],[19],[28]          
Investment, Identifier [Axis]: Ice House America, L.L.C., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 4,169,000 [9],[13],[14],[16],[17],[18]   4,169,000 [9],[13],[14],[16],[17],[18]   4,267,000 [1],[2],[3],[5],[19]          
Cost 4,281,000 [9],[13],[14],[16],[17],[18]   4,281,000 [9],[13],[14],[16],[17],[18]   4,268,000 [1],[2],[3],[5],[19]          
Investment, Identifier [Axis]: Ice House America, L.L.C., LLC Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 339,000 [9],[26]   339,000 [9],[26]   473,000 [5],[25]          
Cost 434,000 [9],[26]   434,000 [9],[26]   425,000 [5],[25]          
Investment, Identifier [Axis]: Ice House America, L.L.C., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 557,000 [7],[9],[13],[16],[17]   557,000 [7],[9],[13],[16],[17]   279,000 [2],[3],[5],[11],[19]          
Cost 571,000 [7],[9],[13],[16],[17]   571,000 [7],[9],[13],[16],[17]   279,000 [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: Image International Intermediate Holdco II, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[2],[3],[5]         23,352,000          
Cost [1],[2],[3],[5]         24,275,000          
Investment, Identifier [Axis]: Image International Intermediate Holdco II, LLC, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[14],[16],[17] 18,385,000   18,385,000              
Cost [9],[14],[16],[17] 19,373,000   19,373,000              
Investment, Identifier [Axis]: Image International Intermediate Holdco II, LLC, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[14],[16],[17] 4,518,000   4,518,000              
Cost [9],[14],[16],[17] 4,771,000   4,771,000              
Investment, Identifier [Axis]: Infoblox, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [16],[17],[20] 2,963,000   2,963,000              
Cost [16],[17],[20] 2,996,000   2,996,000              
Investment, Identifier [Axis]: Infoniqa Holdings GmbH, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value 9,584,000 [8],[9],[14],[16],[21]   9,584,000 [8],[9],[14],[16],[21]   3,902,000 [1],[3],[5],[12],[30]          
Cost 8,767,000 [8],[9],[14],[16],[21]   8,767,000 [8],[9],[14],[16],[21]   4,191,000 [1],[3],[5],[12],[30]          
Investment, Identifier [Axis]: Infoniqa Holdings GmbH, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[12],[19],[30]         545,000          
Cost [1],[3],[5],[12],[19],[30]         492,000          
Investment, Identifier [Axis]: Innovad Group II BV, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,147,000 [7],[8],[9],[14],[16],[21]   1,147,000 [7],[8],[9],[14],[16],[21]   1,011,000 [1],[3],[5],[11],[12],[30]          
Cost 1,150,000 [7],[8],[9],[14],[16],[21]   1,150,000 [7],[8],[9],[14],[16],[21]   1,147,000 [1],[3],[5],[11],[12],[30]          
Investment, Identifier [Axis]: Innovad Group II BV, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value 182,000 [7],[8],[9],[16],[55]   182,000 [7],[8],[9],[16],[55]   160,000 [3],[5],[11],[12],[56]          
Cost 161,000 [7],[8],[9],[16],[55]   161,000 [7],[8],[9],[16],[55]   161,000 [3],[5],[11],[12],[56]          
Investment, Identifier [Axis]: International Fleet Financing No.2 B.V., Class C Senior Secured Note                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[8],[9],[13] 1,754,000   1,754,000              
Cost [7],[8],[9],[13] 1,679,000   1,679,000              
Investment, Identifier [Axis]: Interstellar Group B.V., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 3,458,000 [8],[9],[13],[14],[16],[21]   3,458,000 [8],[9],[13],[14],[16],[21]   3,018,000 [1],[3],[5],[12],[19],[22]          
Cost 3,257,000 [8],[9],[13],[14],[16],[21]   3,257,000 [8],[9],[13],[14],[16],[21]   3,188,000 [1],[3],[5],[12],[19],[22]          
Investment, Identifier [Axis]: InvoCare Limited, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 4,292,000 [8],[9],[13],[14],[16],[35]   4,292,000 [8],[9],[13],[14],[16],[35]   3,925,000 [1],[3],[5],[12],[19],[34]          
Cost 4,139,000 [8],[9],[13],[14],[16],[35]   4,139,000 [8],[9],[13],[14],[16],[35]   4,124,000 [1],[3],[5],[12],[19],[34]          
Investment, Identifier [Axis]: Iridium Bidco Limited, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 5,637,000 [8],[9],[14],[16],[36]   5,637,000 [8],[9],[14],[16],[36]   4,956,000 [1],[3],[5],[12],[39]          
Cost 5,750,000 [8],[9],[14],[16],[36]   5,750,000 [8],[9],[14],[16],[36]   5,382,000 [1],[3],[5],[12],[39]          
Investment, Identifier [Axis]: Isolstar Holding NV (IPCOM), First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 11,572,000 [8],[9],[14],[16],[21]   11,572,000 [8],[9],[14],[16],[21]   10,149,000 [1],[3],[5],[12],[22]          
Cost 9,702,000 [8],[9],[14],[16],[21]   9,702,000 [8],[9],[14],[16],[21]   9,672,000 [1],[3],[5],[12],[22]          
Investment, Identifier [Axis]: J&J Ventures Gaming, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[14],[15],[16] 49,500,000   49,500,000              
Cost [9],[14],[15],[16] 49,513,000   49,513,000              
Investment, Identifier [Axis]: JPMorgan Chase & Co., JPMorgan Prime Money Market Fund                    
Schedule of Investments [Line Items]                    
Total investments at fair value 10,702,000 [7]   10,702,000 [7]   10,200,000 [11]          
Cost 10,703,000 [7]   10,703,000 [7]   10,201,000 [11]          
Investment, Identifier [Axis]: Jade Bidco Limited (Jane's), First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value 3,883,000 [8],[9],[14],[16],[31]   3,883,000 [8],[9],[14],[16],[31]   3,417,000 [1],[3],[5],[12],[30]          
Cost 3,583,000 [8],[9],[14],[16],[31]   3,583,000 [8],[9],[14],[16],[31]   3,573,000 [1],[3],[5],[12],[30]          
Investment, Identifier [Axis]: Jade Bidco Limited (Jane's), First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value 21,141,000 [8],[9],[14],[16],[27]   21,141,000 [8],[9],[14],[16],[27]   21,146,000 [1],[3],[5],[12],[28]          
Cost 20,864,000 [8],[9],[14],[16],[27]   20,864,000 [8],[9],[14],[16],[27]   20,846,000 [1],[3],[5],[12],[28]          
Investment, Identifier [Axis]: JetBlue Airways Corporation, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[8],[16],[17],[20] 6,197,000   6,197,000              
Cost [7],[8],[16],[17],[20] 6,015,000   6,015,000              
Investment, Identifier [Axis]: Jon Bidco Limited, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 3,990,000 [8],[9],[13],[14],[16],[53]   3,990,000 [8],[9],[13],[14],[16],[53]   3,787,000 [1],[3],[5],[12],[19],[54]          
Cost 4,725,000 [8],[9],[13],[14],[16],[53]   4,725,000 [8],[9],[13],[14],[16],[53]   4,573,000 [1],[3],[5],[12],[19],[54]          
Investment, Identifier [Axis]: Jones Fish Hatcheries & Distributors LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 29,152,000 [7],[9],[14],[16],[27]   29,152,000 [7],[9],[14],[16],[27]   8,043,000 [1],[2],[3],[5],[11]          
Cost 29,111,000 [7],[9],[14],[16],[27]   29,111,000 [7],[9],[14],[16],[27]   7,914,000 [1],[2],[3],[5],[11]          
Investment, Identifier [Axis]: Jones Fish Hatcheries & Distributors LLC, LLC Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 827,000 [9]   827,000 [9]   372,000 [5]          
Cost 107,000 [9]   107,000 [9]   107,000 [5]          
Investment, Identifier [Axis]: Jones Fish Hatcheries & Distributors LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 80,000 [7],[9],[13],[16],[27]   80,000 [7],[9],[13],[16],[27]   0 [2],[3],[5],[11],[19]          
Cost 80,000 [7],[9],[13],[16],[27]   80,000 [7],[9],[13],[16],[27]   (4,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: KAMC Holdings Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[14],[16],[17] 10,736,000   10,736,000              
Cost [9],[14],[16],[17] 10,740,000   10,740,000              
Investment, Identifier [Axis]: KAMC Holdings Inc., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[13],[16],[17] 311,000   311,000              
Cost [7],[9],[13],[16],[17] 312,000   312,000              
Investment, Identifier [Axis]: KSLB Holdings, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 21,264,000 [9],[14],[16],[17]   21,264,000 [9],[14],[16],[17]   5,699,000 [1],[2],[3],[5]          
Cost 21,292,000 [9],[14],[16],[17]   21,292,000 [9],[14],[16],[17]   5,785,000 [1],[2],[3],[5]          
Investment, Identifier [Axis]: Kaseya, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [14],[15] 998,000   998,000              
Cost [14],[15] 1,001,000   1,001,000              
Investment, Identifier [Axis]: Keystone Bidco B.V., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 918,000 [8],[9],[13],[14],[16],[31]   918,000 [8],[9],[13],[14],[16],[31]   677,000 [1],[3],[5],[12],[19],[22]          
Cost 861,000 [8],[9],[13],[14],[16],[31]   861,000 [8],[9],[13],[14],[16],[31]   728,000 [1],[3],[5],[12],[19],[22]          
Investment, Identifier [Axis]: Keystone Bidco B.V., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 10,000 [7],[8],[9],[13],[16],[31]   10,000 [7],[8],[9],[13],[16],[31]   18,000 [3],[5],[11],[12],[19],[22]          
Cost 8,000 [7],[8],[9],[13],[16],[31]   8,000 [7],[8],[9],[13],[16],[31]   18,000 [3],[5],[11],[12],[19],[22]          
Investment, Identifier [Axis]: Kid Distro Holdings, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 29,815,000 [9],[14],[16],[18],[27]   29,815,000 [9],[14],[16],[18],[27]   30,009,000 [1],[2],[3],[4],[5]          
Cost 29,732,000 [9],[14],[16],[18],[27]   29,732,000 [9],[14],[16],[18],[27]   29,898,000 [1],[2],[3],[4],[5]          
Investment, Identifier [Axis]: Kid Distro Holdings, LLC, LLC Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,201,000 [9],[26]   1,201,000 [9],[26]   1,286,000 [5],[25]          
Cost 1,064,000 [9],[26]   1,064,000 [9],[26]   1,064,000 [5],[25]          
Investment, Identifier [Axis]: Kline Hill Partners LP, Common Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[26] 491,000   491,000              
Cost [9],[26] 496,000   496,000              
Investment, Identifier [Axis]: Kline Hill Partners LP, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[13],[14],[16],[17] 21,300,000   21,300,000              
Cost [9],[13],[14],[16],[17] 21,278,000   21,278,000              
Investment, Identifier [Axis]: Kline Hill Partners LP, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[13],[17] (87,000)   (87,000)              
Cost [7],[9],[13],[17] (91,000)   (91,000)              
Investment, Identifier [Axis]: Kline Hill Partners LP, Subordinated Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9] 23,388,000   23,388,000              
Cost [7],[9] 23,317,000   23,317,000              
Investment, Identifier [Axis]: Kodiak BP LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [16],[17],[20] 1,983,000   1,983,000              
Cost [16],[17],[20] 1,992,000   1,992,000              
Investment, Identifier [Axis]: LBM Acquisition LLC , First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [15],[16],[20] 2,986,000   2,986,000              
Cost [15],[16],[20] 2,981,000   2,981,000              
Investment, Identifier [Axis]: LHS Borrower, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[14],[15],[16] 50,165,000   50,165,000              
Cost [9],[14],[15],[16] 50,174,000   50,174,000              
Investment, Identifier [Axis]: LHS Borrower, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[13],[15],[16] (69,000)   (69,000)              
Cost [7],[9],[13],[15],[16] (68,000)   (68,000)              
Investment, Identifier [Axis]: Lambir Bidco Limited, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 2,718,000 [8],[9],[13],[14],[16],[31]   2,718,000 [8],[9],[13],[14],[16],[31]   2,327,000 [1],[3],[5],[12],[19],[30]          
Cost 2,708,000 [8],[9],[13],[14],[16],[31]   2,708,000 [8],[9],[13],[14],[16],[31]   2,574,000 [1],[3],[5],[12],[19],[30]          
Investment, Identifier [Axis]: Lambir Bidco Limited, Second Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 922,000 [7],[8],[9]   922,000 [7],[8],[9]   798,000 [5],[11],[12]          
Cost 963,000 [7],[8],[9]   963,000 [7],[8],[9]   903,000 [5],[11],[12]          
Investment, Identifier [Axis]: Lattice Group Holdings Bidco Limited, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[12],[19],[28]         687,000          
Cost [1],[3],[5],[12],[19],[28]         711,000          
Investment, Identifier [Axis]: Lattice Group Holdings Bidco Limited, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value [8],[9],[14],[16],[27] 608,000   608,000              
Cost [8],[9],[14],[16],[27] 602,000   602,000              
Investment, Identifier [Axis]: Lattice Group Holdings Bidco Limited, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value [8],[9],[13],[14],[16],[17] 127,000   127,000              
Cost [8],[9],[13],[14],[16],[17] 125,000   125,000              
Investment, Identifier [Axis]: Lattice Group Holdings Bidco Limited, First Lien Senior Secured Term Loan 3                    
Schedule of Investments [Line Items]                    
Total investments at fair value [8],[9],[14],[16],[38] 154,000   154,000              
Cost [8],[9],[14],[16],[38] 155,000   155,000              
Investment, Identifier [Axis]: Lattice Group Holdings Bidco Limited, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 35,000 [7],[8],[9],[16],[27]   35,000 [7],[8],[9],[16],[27]   (1,000) [3],[5],[11],[12],[19],[28]          
Cost 35,000 [7],[8],[9],[16],[27]   35,000 [7],[8],[9],[16],[27]   (1,000) [3],[5],[11],[12],[19],[28]          
Investment, Identifier [Axis]: LeadsOnline, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 25,329,000 [9],[14],[16],[17],[18]   25,329,000 [9],[14],[16],[17],[18]   25,492,000 [1],[2],[3],[4],[5]          
Cost 25,205,000 [9],[14],[16],[17],[18]   25,205,000 [9],[14],[16],[17],[18]   25,340,000 [1],[2],[3],[4],[5]          
Investment, Identifier [Axis]: LeadsOnline, LLC, LLC Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 149,000 [9]   149,000 [9]   135,000 [5]          
Cost 63,000 [9]   63,000 [9]   63,000 [5]          
Investment, Identifier [Axis]: LeadsOnline, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value (9,000) [7],[9],[13],[16],[17]   (9,000) [7],[9],[13],[16],[17]   (13,000) [2],[3],[5],[11],[19]          
Cost (29,000) [7],[9],[13],[16],[17]   (29,000) [7],[9],[13],[16],[17]   (39,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: Learfield Communications, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [3],[11],[24]         2,115,000          
Cost [3],[11],[24]         2,098,000          
Investment, Identifier [Axis]: LifePoint Health Inc., First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value [16],[17],[20] 1,736,000   1,736,000              
Cost [16],[17],[20] 1,735,000   1,735,000              
Investment, Identifier [Axis]: LifePoint Health Inc., First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value [16],[17],[20] 2,985,000   2,985,000              
Cost [16],[17],[20] 2,978,000   2,978,000              
Investment, Identifier [Axis]: Liftoff Mobile, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [16],[20] 4,859,000   4,859,000              
Cost [16],[20] 4,950,000   4,950,000              
Investment, Identifier [Axis]: Listrac Bidco Limited, Common Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value [5],[11],[12],[25]         1,610,000          
Cost [5],[11],[12],[25]         494,000          
Investment, Identifier [Axis]: Listrac Bidco Limited, Common StockGbp                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[8],[9],[26] 1,899,000   1,899,000              
Cost [7],[8],[9],[26] 494,000   494,000              
Investment, Identifier [Axis]: Listrac Bidco Limited, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value 190,000 [7],[8],[9],[38]   190,000 [7],[8],[9],[38]   169,000 [5],[11],[12],[39]          
Cost 160,000 [7],[8],[9],[38]   160,000 [7],[8],[9],[38]   158,000 [5],[11],[12],[39]          
Investment, Identifier [Axis]: Listrac Bidco Limited, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,066,000 [7],[8],[9],[38]   1,066,000 [7],[8],[9],[38]   992,000 [5],[11],[12],[39]          
Cost 946,000 [7],[8],[9],[38]   946,000 [7],[8],[9],[38]   946,000 [5],[11],[12],[39]          
Investment, Identifier [Axis]: Lockmasters Security Intermediate, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[13],[14],[16],[17] 13,700,000   13,700,000              
Cost [9],[13],[14],[16],[17] 13,699,000   13,699,000              
Investment, Identifier [Axis]: Lockmasters Security Intermediate, Inc., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[13],[15],[16] (8,000)   (8,000)              
Cost [7],[9],[13],[15],[16] (8,000)   (8,000)              
Investment, Identifier [Axis]: Long Term Care Group, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 4,386,000 [9],[14],[16],[17]   4,386,000 [9],[14],[16],[17]   4,095,000 [1],[2],[3],[5]          
Cost 4,555,000 [9],[14],[16],[17]   4,555,000 [9],[14],[16],[17]   4,532,000 [1],[2],[3],[5]          
Investment, Identifier [Axis]: M-Personal Protection Management GMBH, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [8],[9],[14],[16],[21] 11,750,000   11,750,000              
Cost [8],[9],[14],[16],[21] 10,690,000   10,690,000              
Investment, Identifier [Axis]: M-Personal Protection Management GmbH (f/k/a INOS 19-090 GmbH), First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[12],[22]         10,096,000          
Cost [1],[3],[5],[12],[22]         10,624,000          
Investment, Identifier [Axis]: MB Purchaser, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 5,519,000 [9],[13],[14],[16],[17]   5,519,000 [9],[13],[14],[16],[17]   3,775,000 [1],[3],[5],[19],[24]          
Cost 5,482,000 [9],[13],[14],[16],[17]   5,482,000 [9],[13],[14],[16],[17]   3,705,000 [1],[3],[5],[19],[24]          
Investment, Identifier [Axis]: MB Purchaser, LLC, LLC Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 236,000 [9],[26]   236,000 [9],[26]   218,000 [5],[25]          
Cost 183,000 [9],[26]   183,000 [9],[26]   183,000 [5],[25]          
Investment, Identifier [Axis]: MB Purchaser, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value (7,000) [7],[9],[13],[16],[17]   (7,000) [7],[9],[13],[16],[17]   (4,000) [3],[5],[11],[19],[24]          
Cost (12,000) [7],[9],[13],[16],[17]   (12,000) [7],[9],[13],[16],[17]   (14,000) [3],[5],[11],[19],[24]          
Investment, Identifier [Axis]: MC Group Ventures Corporation, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value 7,761,000 [9],[13],[14],[16],[17],[18]   7,761,000 [9],[13],[14],[16],[17],[18]   7,950,000 [1],[3],[4],[5],[19],[24]          
Cost 8,124,000 [9],[13],[14],[16],[17],[18]   8,124,000 [9],[13],[14],[16],[17],[18]   8,139,000 [1],[3],[4],[5],[19],[24]          
Investment, Identifier [Axis]: MC Group Ventures Corporation, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value 6,667,000 [9],[13],[14],[16],[17],[18]   6,667,000 [9],[13],[14],[16],[17],[18]   6,374,000 [1],[3],[4],[5],[19],[28]          
Cost 6,797,000 [9],[13],[14],[16],[17],[18]   6,797,000 [9],[13],[14],[16],[17],[18]   6,417,000 [1],[3],[4],[5],[19],[28]          
Investment, Identifier [Axis]: MC Group Ventures Corporation, Partnership Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 449,000 [7],[9],[26]   449,000 [7],[9],[26]   511,000 [5],[11],[25]          
Cost 560,000 [7],[9],[26]   560,000 [7],[9],[26]   560,000 [5],[11],[25]          
Investment, Identifier [Axis]: MI OpCo Holdings, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [3],[11],[24]         25,500,000          
Cost [3],[11],[24]         23,461,000          
Investment, Identifier [Axis]: MIV Buyer, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[13],[14],[16],[17] 5,257,000   5,257,000              
Cost [9],[13],[14],[16],[17] 5,257,000   5,257,000              
Investment, Identifier [Axis]: MIV Buyer, LLC, LLC Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[26] 202,000   202,000              
Cost [9],[26] 202,000   202,000              
Investment, Identifier [Axis]: MIV Buyer, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[13],[16],[17] (12,000)   (12,000)              
Cost [7],[9],[13],[16],[17] (12,000)   (12,000)              
Investment, Identifier [Axis]: MNS Buyer, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 348,000 [9],[14],[15],[16]   348,000 [9],[14],[15],[16]   662,000 [1],[2],[3],[5]          
Cost 345,000 [9],[14],[15],[16]   345,000 [9],[14],[15],[16]   656,000 [1],[2],[3],[5]          
Investment, Identifier [Axis]: MNS Buyer, Inc., Partnership Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 189,000 [7],[9],[26]   189,000 [7],[9],[26]   106,000 [5],[11],[25]          
Cost 77,000 [7],[9],[26]   77,000 [7],[9],[26]   77,000 [5],[11],[25]          
Investment, Identifier [Axis]: MSI Express Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[13],[14],[16],[17] 8,095,000   8,095,000              
Cost [9],[13],[14],[16],[17] 8,057,000   8,057,000              
Investment, Identifier [Axis]: MSI Express Inc., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[13],[16],[17] 2,169,000   2,169,000              
Cost [7],[9],[13],[16],[17] 2,165,000   2,165,000              
Investment, Identifier [Axis]: Marmoutier Holding B.V., Common Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[8],[9],[14],[26] 0   0              
Cost [7],[8],[9],[14],[26] 0   0              
Investment, Identifier [Axis]: Marmoutier Holding B.V., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 39,000 [7],[8],[9],[13],[16],[21]   39,000 [7],[8],[9],[13],[16],[21]   146,000 [1],[3],[5],[12],[19],[30],[45]          
Cost 67,000 [7],[8],[9],[13],[16],[21]   67,000 [7],[8],[9],[13],[16],[21]   2,415,000 [1],[3],[5],[12],[19],[30],[45]          
Investment, Identifier [Axis]: Marmoutier Holding B.V., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 146,000 [7],[8],[9],[16],[21]   146,000 [7],[8],[9],[16],[21]   (53,000) [3],[5],[11],[12],[19],[30],[45]          
Cost 157,000 [7],[8],[9],[16],[21]   157,000 [7],[8],[9],[16],[21]   104,000 [3],[5],[11],[12],[19],[30],[45]          
Investment, Identifier [Axis]: Marmoutier Holding B.V., Super Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 160,000 [7],[8],[9],[16],[31]   160,000 [7],[8],[9],[16],[31]   186,000 [3],[5],[11],[12],[45]          
Cost 176,000 [7],[8],[9],[16],[31]   176,000 [7],[8],[9],[16],[31]   195,000 [3],[5],[11],[12],[45]          
Investment, Identifier [Axis]: Media Recovery, Inc. (SpotSee), First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value 5,366,000 [9],[14],[16],[17]   5,366,000 [9],[14],[16],[17]   5,346,000 [1],[2],[3],[5]          
Cost 5,364,000 [9],[14],[16],[17]   5,364,000 [9],[14],[16],[17]   5,345,000 [1],[2],[3],[5]          
Investment, Identifier [Axis]: Media Recovery, Inc. (SpotSee), First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value 11,199,000 [9],[14],[16],[32]   11,199,000 [9],[14],[16],[32]   11,550,000 [1],[3],[5],[57]          
Cost 11,153,000 [9],[14],[16],[32]   11,153,000 [9],[14],[16],[32]   12,368,000 [1],[3],[5],[57]          
Investment, Identifier [Axis]: Media Recovery, Inc. (SpotSee), Revolver 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value 105,000 [7],[9],[13],[16],[17]   105,000 [7],[9],[13],[16],[17]   (26,000) [2],[3],[5],[11],[19]          
Cost 105,000 [7],[9],[13],[16],[17]   105,000 [7],[9],[13],[16],[17]   (27,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: Media Recovery, Inc. (SpotSee), Revolver 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value (24,000) [7],[9],[13],[16],[32]   (24,000) [7],[9],[13],[16],[32]   (31,000) [3],[5],[11],[19],[57]          
Cost (25,000) [7],[9],[13],[16],[32]   (25,000) [7],[9],[13],[16],[32]   (33,000) [3],[5],[11],[19],[57]          
Investment, Identifier [Axis]: Median B.V., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 6,531,000 [8],[14],[16],[36]   6,531,000 [8],[14],[16],[36]   5,958,000 [1],[3],[12],[39]          
Cost 6,617,000 [8],[14],[16],[36]   6,617,000 [8],[14],[16],[36]   6,586,000 [1],[3],[12],[39]          
Investment, Identifier [Axis]: Medical Solutions Parent Holdings, Inc., Second Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 892,000 [7],[14],[16],[17]   892,000 [7],[14],[16],[17]   2,211,000 [1],[2],[3]          
Cost 4,372,000 [7],[14],[16],[17]   4,372,000 [7],[14],[16],[17]   4,391,000 [1],[2],[3]          
Investment, Identifier [Axis]: Megawatt Acquisitionco, Inc., Common Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[9],[26]   0 [7],[9],[26]   0 [5],[11],[25]          
Cost 62,000 [7],[9],[26]   62,000 [7],[9],[26]   62,000 [5],[11],[25]          
Investment, Identifier [Axis]: Megawatt Acquisitionco, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 7,706,000 [9],[16],[17],[18]   7,706,000 [9],[16],[17],[18]   6,984,000 [2],[3],[4],[5]          
Cost 7,779,000 [9],[16],[17],[18]   7,779,000 [9],[16],[17],[18]   7,822,000 [2],[3],[4],[5]          
Investment, Identifier [Axis]: Megawatt Acquisitionco, Inc., Preferred Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value 387,000 [7],[9],[26]   387,000 [7],[9],[26]   138,000 [5],[11],[25]          
Cost 552,000 [7],[9],[26]   552,000 [7],[9],[26]   552,000 [5],[11],[25]          
Investment, Identifier [Axis]: Megawatt Acquisitionco, Inc., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 199,000 [7],[9],[13],[16],[17]   199,000 [7],[9],[13],[16],[17]   323,000 [2],[3],[5],[11],[19]          
Cost 220,000 [7],[9],[13],[16],[17]   220,000 [7],[9],[13],[16],[17]   534,000 [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: Mercell Holding AS, Class A Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 152,000 [7],[8],[9],[26]   152,000 [7],[8],[9],[26]   125,000 [5],[11],[12],[25]          
Cost 111,000 [7],[8],[9],[26]   111,000 [7],[8],[9],[26]   111,000 [5],[11],[12],[25]          
Investment, Identifier [Axis]: Mercell Holding AS, Class B Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[8],[9],[26]   0 [7],[8],[9],[26]   21,000 [5],[11],[12],[25]          
Cost 0 [7],[8],[9],[26]   0 [7],[8],[9],[26]   0 [5],[11],[12],[25]          
Investment, Identifier [Axis]: Mercell Holding AS, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 3,136,000 [8],[9],[13],[14],[16],[58]   3,136,000 [8],[9],[13],[14],[16],[58]   2,750,000 [1],[3],[5],[12],[19],[59]          
Cost 3,159,000 [8],[9],[13],[14],[16],[58]   3,159,000 [8],[9],[13],[14],[16],[58]   3,150,000 [1],[3],[5],[12],[19],[59]          
Investment, Identifier [Axis]: Mertus 522. GmbH, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value 449,000 [8],[9],[14],[16],[31]   449,000 [8],[9],[14],[16],[31]   394,000 [1],[3],[5],[12],[30]          
Cost 465,000 [8],[9],[14],[16],[31]   465,000 [8],[9],[14],[16],[31]   457,000 [1],[3],[5],[12],[30]          
Investment, Identifier [Axis]: Mertus 522. GmbH, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value 3,791,000 [8],[9],[14],[16],[31]   3,791,000 [8],[9],[14],[16],[31]   3,295,000 [1],[3],[5],[12],[30]          
Cost 3,668,000 [8],[9],[14],[16],[31]   3,668,000 [8],[9],[14],[16],[31]   3,608,000 [1],[3],[5],[12],[30]          
Investment, Identifier [Axis]: Metis BidCo Pty Limited, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[12],[34]         294,000          
Cost [1],[3],[5],[12],[34]         368,000          
Investment, Identifier [Axis]: Modern Star Holdings Bidco Pty Limited, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,865,000 [7],[8],[9],[13],[14],[16],[52]   1,865,000 [7],[8],[9],[13],[14],[16],[52]   1,759,000 [1],[3],[5],[11],[12],[19],[60]          
Cost 1,923,000 [7],[8],[9],[13],[14],[16],[52]   1,923,000 [7],[8],[9],[13],[14],[16],[52]   1,929,000 [1],[3],[5],[11],[12],[19],[60]          
Investment, Identifier [Axis]: Mold-Rite Plastics, LLC, Second Lien Second Out Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [14],[17]   0 [14],[17]   2,837,000 [1],[2]          
Cost (115,000) [14],[17]   (115,000) [14],[17]   2,701,000 [1],[2]          
Investment, Identifier [Axis]: Momentum Textiles, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[14],[16],[17] 10,642,000   10,642,000              
Cost [9],[14],[16],[17] 10,632,000   10,632,000              
Investment, Identifier [Axis]: Momentum Textiles, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[13],[16],[17] (11,000)   (11,000)              
Cost [7],[9],[13],[16],[17] (12,000)   (12,000)              
Investment, Identifier [Axis]: Moonlight Bidco Limited, Common Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value 210,000 [7],[8],[9],[26]   210,000 [7],[8],[9],[26]   182,000 [5],[11],[12],[25]          
Cost 138,000 [7],[8],[9],[26]   138,000 [7],[8],[9],[26]   138,000 [5],[11],[12],[25]          
Investment, Identifier [Axis]: Moonlight Bidco Limited, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 2,000,000 [7],[8],[9],[13],[16],[36]   2,000,000 [7],[8],[9],[13],[16],[36]   1,841,000 [3],[5],[11],[12],[19],[37]          
Cost 1,891,000 [7],[8],[9],[13],[16],[36]   1,891,000 [7],[8],[9],[13],[16],[36]   1,884,000 [3],[5],[11],[12],[19],[37]          
Investment, Identifier [Axis]: Murphy Midco Limited, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 753,000 [7],[8],[9],[14],[16],[38]   753,000 [7],[8],[9],[14],[16],[38]   738,000 [1],[3],[5],[11],[12],[39]          
Cost 800,000 [7],[8],[9],[14],[16],[38]   800,000 [7],[8],[9],[14],[16],[38]   798,000 [1],[3],[5],[11],[12],[39]          
Investment, Identifier [Axis]: Music Reports, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 2,399,000 [9],[16],[17],[18]   2,399,000 [9],[16],[17],[18]   2,333,000 [2],[3],[4],[5]          
Cost 2,433,000 [9],[16],[17],[18]   2,433,000 [9],[16],[17],[18]   2,426,000 [2],[3],[4],[5]          
Investment, Identifier [Axis]: NAPA Management Services Corp, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[14],[15],[16],[20] 4,248,000   4,248,000              
Cost [7],[14],[15],[16],[20] 5,859,000   5,859,000              
Investment, Identifier [Axis]: NAW Buyer LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 12,022,000 [9],[13],[14],[16],[17]   12,022,000 [9],[13],[14],[16],[17]   11,533,000 [1],[2],[3],[5],[19]          
Cost 11,663,000 [9],[13],[14],[16],[17]   11,663,000 [9],[13],[14],[16],[17]   11,114,000 [1],[2],[3],[5],[19]          
Investment, Identifier [Axis]: NAW Buyer LLC, LLC Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 748,000 [9]   748,000 [9]   639,000 [5]          
Cost 575,000 [9]   575,000 [9]   575,000 [5]          
Investment, Identifier [Axis]: NAW Buyer LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[9],[13],[16],[17]   0 [7],[9],[13],[16],[17]   0 [2],[3],[5],[11],[19]          
Cost (38,000) [7],[9],[13],[16],[17]   (38,000) [7],[9],[13],[16],[17]   (45,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: NF Holdco, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 5,263,000 [7],[9],[16],[17]   5,263,000 [7],[9],[16],[17]   5,456,000 [2],[3],[5],[11]          
Cost 5,306,000 [7],[9],[16],[17]   5,306,000 [7],[9],[16],[17]   5,329,000 [2],[3],[5],[11]          
Investment, Identifier [Axis]: NF Holdco, LLC, LLC Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 411,000 [7],[9],[26]   411,000 [7],[9],[26]   753,000 [5],[11],[25]          
Cost 882,000 [7],[9],[26]   882,000 [7],[9],[26]   882,000 [5],[11],[25]          
Investment, Identifier [Axis]: NF Holdco, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 816,000 [7],[9],[13],[16],[17]   816,000 [7],[9],[13],[16],[17]   370,000 [2],[3],[5],[11],[19]          
Cost 832,000 [7],[9],[13],[16],[17]   832,000 [7],[9],[13],[16],[17]   338,000 [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: NPM Investments 28 B.V., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 4,278,000 [7],[8],[9],[13],[14],[16],[21]   4,278,000 [7],[8],[9],[13],[14],[16],[21]   1,128,000 [1],[3],[4],[5],[12],[19],[22]          
Cost 3,805,000 [7],[8],[9],[13],[14],[16],[21]   3,805,000 [7],[8],[9],[13],[14],[16],[21]   1,044,000 [1],[3],[4],[5],[12],[19],[22]          
Investment, Identifier [Axis]: Napa Bidco Pty Ltd, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 13,001,000 [8],[9],[14],[16],[35]   13,001,000 [8],[9],[14],[16],[35]   12,146,000 [1],[3],[5],[12],[34]          
Cost 13,947,000 [8],[9],[14],[16],[35]   13,947,000 [8],[9],[14],[16],[35]   13,897,000 [1],[3],[5],[12],[34]          
Investment, Identifier [Axis]: Narda Acquisitionco., Inc., Class A Preferred Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value [5],[11],[25]         467,000          
Cost [5],[11],[25]         371,000          
Investment, Identifier [Axis]: Narda Acquisitionco., Inc., Class B Common Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value [5],[11],[25]         600,000          
Cost [5],[11],[25]         41,000          
Investment, Identifier [Axis]: Narda Acquisitionco., Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [3],[4],[5],[24]         4,101,000          
Cost [3],[4],[5],[24]         4,063,000          
Investment, Identifier [Axis]: Narda Acquisitionco., Inc., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [3],[5],[11],[19],[24]         0          
Cost [3],[5],[11],[19],[24]         (9,000)          
Investment, Identifier [Axis]: Navia Benefit Solutions, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 6,422,000 [7],[9],[15],[16],[18]   6,422,000 [7],[9],[15],[16],[18]   6,472,000 [3],[4],[5],[11],[24]          
Cost 6,388,000 [7],[9],[15],[16],[18]   6,388,000 [7],[9],[15],[16],[18]   6,419,000 [3],[4],[5],[11],[24]          
Investment, Identifier [Axis]: NeoxCo, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 2,809,000 [8],[9],[14],[16],[31]   2,809,000 [8],[9],[14],[16],[31]   2,456,000 [1],[3],[5],[12],[30]          
Cost 2,532,000 [8],[9],[14],[16],[31]   2,532,000 [8],[9],[14],[16],[31]   2,525,000 [1],[3],[5],[12],[30]          
Investment, Identifier [Axis]: Neptune Bidco US Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[16],[17],[20] 9,048,000   9,048,000              
Cost [7],[16],[17],[20] 8,917,000   8,917,000              
Investment, Identifier [Axis]: Next Holdco, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 43,153,000 [9],[13],[14],[16],[17]   43,153,000 [9],[13],[14],[16],[17]   15,221,000 [1],[2],[3],[5],[19]          
Cost 42,919,000 [9],[13],[14],[16],[17]   42,919,000 [9],[13],[14],[16],[17]   14,942,000 [1],[2],[3],[5],[19]          
Investment, Identifier [Axis]: Next Holdco, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value (13,000) [7],[9],[13],[16],[17]   (13,000) [7],[9],[13],[16],[17]   0 [2],[3],[5],[11],[19]          
Cost (24,000) [7],[9],[13],[16],[17]   (24,000) [7],[9],[13],[16],[17]   (29,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: Northstar Recycling, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 23,519,000 [9],[14],[16],[17]   23,519,000 [9],[14],[16],[17]   17,249,000 [1],[2],[3],[5],[19]          
Cost 23,504,000 [9],[14],[16],[17]   23,504,000 [9],[14],[16],[17]   17,251,000 [1],[2],[3],[5],[19]          
Investment, Identifier [Axis]: Northstar Recycling, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value (36,000) [7],[9],[13],[16],[17]   (36,000) [7],[9],[13],[16],[17]   (45,000) [2],[3],[5],[11],[19]          
Cost (38,000) [7],[9],[13],[16],[17]   (38,000) [7],[9],[13],[16],[17]   (45,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: OA Buyer, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[4],[5],[24]         45,316,000          
Cost [1],[3],[4],[5],[24]         45,218,000          
Investment, Identifier [Axis]: OA Buyer, Inc., Partnership Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value [5],[11]         783,000          
Cost [5],[11]         211,000          
Investment, Identifier [Axis]: OA Buyer, Inc., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [3],[5],[11],[19],[24]         (5,000)          
Cost [3],[5],[11],[19],[24]         (15,000)          
Investment, Identifier [Axis]: OAC Holdings I Corp, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 3,294,000 [9],[16],[17],[18]   3,294,000 [9],[16],[17],[18]   3,539,000 [3],[4],[5],[24]          
Cost 3,259,000 [9],[16],[17],[18]   3,259,000 [9],[16],[17],[18]   3,494,000 [3],[4],[5],[24]          
Investment, Identifier [Axis]: OAC Holdings I Corp, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[9],[13],[16],[17]   0 [7],[9],[13],[16],[17]   0 [3],[5],[11],[19],[24]          
Cost (12,000) [7],[9],[13],[16],[17]   (12,000) [7],[9],[13],[16],[17]   (15,000) [3],[5],[11],[19],[24]          
Investment, Identifier [Axis]: OCP CLO 2016-12, Ltd., Subordinated Structured Notes                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,901,000 [7],[8],[16],[17]   1,901,000 [7],[8],[16],[17]   1,930,000 [2],[3],[11],[12]          
Cost 1,875,000 [7],[8],[16],[17]   1,875,000 [7],[8],[16],[17]   1,875,000 [2],[3],[11],[12]          
Investment, Identifier [Axis]: OCP CLO 2024-35, Ltd., Subordinated Structured Notes                    
Schedule of Investments [Line Items]                    
Total investments at fair value 3,828,000 [7],[8],[16],[17]   3,828,000 [7],[8],[16],[17]   3,787,000 [2],[3],[11],[12]          
Cost 3,750,000 [7],[8],[16],[17]   3,750,000 [7],[8],[16],[17]   3,750,000 [2],[3],[11],[12]          
Investment, Identifier [Axis]: OG III B.V., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[12],[22]         14,312,000          
Cost [1],[3],[5],[12],[22]         16,272,000          
Investment, Identifier [Axis]: OG III B.V., First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value [8],[9],[14],[16],[21] 15,957,000   15,957,000              
Cost [8],[9],[14],[16],[21] 16,314,000   16,314,000              
Investment, Identifier [Axis]: ORS Buyer, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[14],[16],[17] 10,643,000   10,643,000              
Cost [9],[14],[16],[17] 10,633,000   10,633,000              
Investment, Identifier [Axis]: ORTEC INTERNATIONAL NEWCO B.V., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 5,371,000 [8],[9],[14],[16],[21]   5,371,000 [8],[9],[14],[16],[21]   4,657,000 [1],[3],[5],[12],[22]          
Cost 4,889,000 [8],[9],[14],[16],[21]   4,889,000 [8],[9],[14],[16],[21]   4,878,000 [1],[3],[5],[12],[22]          
Investment, Identifier [Axis]: OSP Hamilton Purchaser, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 23,427,000 [7],[9],[13],[14],[16],[17],[18]   23,427,000 [7],[9],[13],[14],[16],[17],[18]   19,044,000 [1],[2],[3],[4],[5],[11],[19]          
Cost 23,383,000 [7],[9],[13],[14],[16],[17],[18]   23,383,000 [7],[9],[13],[14],[16],[17],[18]   19,022,000 [1],[2],[3],[4],[5],[11],[19]          
Investment, Identifier [Axis]: OSP Hamilton Purchaser, LLC, LP Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 356,000 [9],[26]   356,000 [9],[26]   274,000 [5]          
Cost 315,000 [9],[26]   315,000 [9],[26]   315,000 [5]          
Investment, Identifier [Axis]: OSP Hamilton Purchaser, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,201,000 [7],[9],[13],[16],[17]   1,201,000 [7],[9],[13],[16],[17]   623,000 [2],[3],[5],[11],[19]          
Cost 1,193,000 [7],[9],[13],[16],[17]   1,193,000 [7],[9],[13],[16],[17]   615,000 [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: Ocelot Holdco LLC, Common Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value 737,000 [7],[9],[26]   737,000 [7],[9],[26]   232,000 [5],[11],[25]          
Cost 0 [7],[9],[26]   0 [7],[9],[26]   0 [5],[11],[25]          
Investment, Identifier [Axis]: Ocelot Holdco LLC, Preferred Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value 762,000 [7],[9]   762,000 [7],[9]   898,000 [5],[11]          
Cost 488,000 [7],[9]   488,000 [7],[9]   488,000 [5],[11]          
Investment, Identifier [Axis]: Ocelot Holdco LLC, Super Senior Takeback Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [5],[11]         172,000          
Cost [5],[11]         172,000          
Investment, Identifier [Axis]: Ocelot Holdco LLC, Takeback Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 917,000 [7],[9]   917,000 [7],[9]   917,000 [5],[11]          
Cost 917,000 [7],[9]   917,000 [7],[9]   917,000 [5],[11]          
Investment, Identifier [Axis]: Octagon Investment Partners 20-R, LLC, Subordinated Structured Notes                    
Schedule of Investments [Line Items]                    
Total investments at fair value 2,537,000 [7],[8],[16],[17]   2,537,000 [7],[8],[16],[17]   2,567,000 [2],[3],[11],[12]          
Cost 2,477,000 [7],[8],[16],[17]   2,477,000 [7],[8],[16],[17]   2,475,000 [2],[3],[11],[12]          
Investment, Identifier [Axis]: Octane Purchaser Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[13],[14],[15],[16] 28,595,000   28,595,000              
Cost [9],[13],[14],[15],[16] 28,578,000   28,578,000              
Investment, Identifier [Axis]: Octane Purchaser Inc., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[13],[15],[16] (27,000)   (27,000)              
Cost [7],[9],[13],[15],[16] (29,000)   (29,000)              
Investment, Identifier [Axis]: Ocular Therapeutix, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 9,675,000 [7],[8],[9],[15],[16]   9,675,000 [7],[8],[9],[15],[16]   9,698,000 [3],[5],[11],[12],[24]          
Cost 7,690,000 [7],[8],[9],[15],[16]   7,690,000 [7],[8],[9],[15],[16]   7,665,000 [3],[5],[11],[12],[24]          
Investment, Identifier [Axis]: Oracle Vision Bidco Limited, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [8],[9],[13],[14],[16],[38] 7,031,000   7,031,000              
Cost [8],[9],[13],[14],[16],[38] 7,116,000   7,116,000              
Investment, Identifier [Axis]: Oracle Vision Bidco Limited, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[12],[19],[39]         1,358,000          
Cost [1],[3],[5],[12],[19],[39]         1,538,000          
Investment, Identifier [Axis]: Oracle Vision Bidco Limited, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[12],[39]         4,983,000          
Cost [1],[3],[5],[12],[39]         5,181,000          
Investment, Identifier [Axis]: Origin Bidco Limited, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value 345,000 [8],[9],[14],[16],[21]   345,000 [8],[9],[14],[16],[21]   301,000 [1],[3],[5],[12],[22]          
Cost 356,000 [8],[9],[14],[16],[21]   356,000 [8],[9],[14],[16],[21]   355,000 [1],[3],[5],[12],[22]          
Investment, Identifier [Axis]: Origin Bidco Limited, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value 8,882,000 [8],[9],[14],[16],[17]   8,882,000 [8],[9],[14],[16],[17]   522,000 [1],[2],[3],[5],[12]          
Cost 8,854,000 [8],[9],[14],[16],[17]   8,854,000 [8],[9],[14],[16],[17]   525,000 [1],[2],[3],[5],[12]          
Investment, Identifier [Axis]: Origin Bidco Limited, First Lien Senior Secured Term Loan 3                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[2],[3],[5],[12]         8,301,000          
Cost [1],[2],[3],[5],[12]         8,306,000          
Investment, Identifier [Axis]: Owl Intermediate Holdings, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[13],[14],[16],[17] 11,620,000   11,620,000              
Cost [9],[13],[14],[16],[17] 11,604,000   11,604,000              
Investment, Identifier [Axis]: Owl Intermediate Holdings, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[13],[16],[17] (30,000)   (30,000)              
Cost [7],[9],[13],[16],[17] (32,000)   (32,000)              
Investment, Identifier [Axis]: PDQ.Com Corporation, Class A-2 Partnership Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 97,000 [7],[9],[26]   97,000 [7],[9],[26]   126,000 [5],[11],[25]          
Cost 42,000 [7],[9],[26]   42,000 [7],[9],[26]   86,000 [5],[11],[25]          
Investment, Identifier [Axis]: PDQ.Com Corporation, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 19,346,000 [9],[13],[14],[16],[17],[18]   19,346,000 [9],[13],[14],[16],[17],[18]   16,441,000 [1],[2],[3],[4],[5],[19]          
Cost 19,145,000 [9],[13],[14],[16],[17],[18]   19,145,000 [9],[13],[14],[16],[17],[18]   16,447,000 [1],[2],[3],[4],[5],[19]          
Investment, Identifier [Axis]: PEGASUS TRANSTECH HOLDING, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 8,249,000 [9],[14],[15],[16]   8,249,000 [9],[14],[15],[16]   8,333,000 [1],[3],[5],[24]          
Cost 8,235,000 [9],[14],[15],[16]   8,235,000 [9],[14],[15],[16]   8,310,000 [1],[3],[5],[24]          
Investment, Identifier [Axis]: PSP Intermediate 4, LLC, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value 949,000 [8],[9],[14],[16],[21]   949,000 [8],[9],[14],[16],[21]   844,000 [1],[3],[5],[12],[19],[22]          
Cost 852,000 [8],[9],[14],[16],[21]   852,000 [8],[9],[14],[16],[21]   846,000 [1],[3],[5],[12],[19],[22]          
Investment, Identifier [Axis]: PSP Intermediate 4, LLC, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,394,000 [8],[9],[14],[16],[17]   1,394,000 [8],[9],[14],[16],[17]   1,408,000 [1],[2],[3],[5],[12]          
Cost 1,397,000 [8],[9],[14],[16],[17]   1,397,000 [8],[9],[14],[16],[17]   1,394,000 [1],[2],[3],[5],[12]          
Investment, Identifier [Axis]: Padagis, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[14],[16],[17],[20] 5,178,000   5,178,000              
Cost [9],[14],[16],[17],[20] 5,482,000   5,482,000              
Investment, Identifier [Axis]: Palmer Square CLO 2022-5, Ltd., Subordinated Structured Notes                    
Schedule of Investments [Line Items]                    
Total investments at fair value 4,060,000 [7],[8],[16],[17]   4,060,000 [7],[8],[16],[17]   4,125,000 [2],[3],[11],[12]          
Cost 4,000,000 [7],[8],[16],[17]   4,000,000 [7],[8],[16],[17]   4,000,000 [2],[3],[11],[12]          
Investment, Identifier [Axis]: Panoche Energy Center LLC, First Lien Senior Secured Bond                    
Schedule of Investments [Line Items]                    
Total investments at fair value 3,046,000 [7],[9]   3,046,000 [7],[9]   3,695,000 [5],[11]          
Cost 2,876,000 [7],[9]   2,876,000 [7],[9]   3,458,000 [5],[11]          
Investment, Identifier [Axis]: Pare SAS (SAS Maurice MARLE), First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value 575,000 [8],[9],[14],[16],[21]   575,000 [8],[9],[14],[16],[21]   522,000 [1],[3],[5],[12],[30]          
Cost 587,000 [8],[9],[14],[16],[21]   587,000 [8],[9],[14],[16],[21]   603,000 [1],[3],[5],[12],[30]          
Investment, Identifier [Axis]: Pare SAS (SAS Maurice MARLE), First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value 4,600,000 [8],[9],[13],[14],[16],[17]   4,600,000 [8],[9],[13],[14],[16],[17]   4,800,000 [1],[2],[3],[5],[12],[19]          
Cost 4,549,000 [8],[9],[13],[14],[16],[17]   4,549,000 [8],[9],[13],[14],[16],[17]   4,703,000 [1],[2],[3],[5],[12],[19]          
Investment, Identifier [Axis]: Parkview Dental Holdings LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [3],[5],[11],[19],[24]         609,000          
Cost [3],[5],[11],[19],[24]         608,000          
Investment, Identifier [Axis]: Parkview Dental Holdings LLC, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[15],[16] 29,000   29,000              
Cost [7],[9],[15],[16] 29,000   29,000              
Investment, Identifier [Axis]: Parkview Dental Holdings LLC, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[15],[16] 593,000   593,000              
Cost [7],[9],[15],[16] 586,000   586,000              
Investment, Identifier [Axis]: Parkview Dental Holdings LLC, LLC Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 350,000 [9],[26]   350,000 [9],[26]   263,000 [5],[25]          
Cost 298,000 [9],[26]   298,000 [9],[26]   298,000 [5],[25]          
Investment, Identifier [Axis]: Parkview Dental Holdings LLC, Preferred Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9] 38,000   38,000              
Cost [9] 12,000   12,000              
Investment, Identifier [Axis]: Patriot New Midco 1 Limited (Forensic Risk Alliance), First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value 282,000 [8],[9],[14],[16],[21]   282,000 [8],[9],[14],[16],[21]   273,000 [1],[3],[5],[12],[22]          
Cost 290,000 [8],[9],[14],[16],[21]   290,000 [8],[9],[14],[16],[21]   317,000 [1],[3],[5],[12],[22]          
Investment, Identifier [Axis]: Patriot New Midco 1 Limited (Forensic Risk Alliance), First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value 320,000 [8],[9],[14],[16],[17]   320,000 [8],[9],[14],[16],[17]   351,000 [1],[2],[3],[5],[12]          
Cost 320,000 [8],[9],[14],[16],[17]   320,000 [8],[9],[14],[16],[17]   350,000 [1],[2],[3],[5],[12]          
Investment, Identifier [Axis]: Patterson Companies, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [16],[17],[20] 2,749,000   2,749,000              
Cost [16],[17],[20] 2,762,000   2,762,000              
Investment, Identifier [Axis]: Pediatric Associates, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[16],[17],[20] 3,231,000   3,231,000              
Cost [7],[16],[17],[20] 2,955,000   2,955,000              
Investment, Identifier [Axis]: Peninsula Pacific Entertainment, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[16],[17],[20] 1,926,000   1,926,000              
Cost [9],[16],[17],[20] 1,911,000   1,911,000              
Investment, Identifier [Axis]: Perforce Software, Inc., Second Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 6,497,000 [9],[14],[15],[16]   6,497,000 [9],[14],[15],[16]   6,497,000 [1],[3],[5],[24]          
Cost 6,470,000 [9],[14],[15],[16]   6,470,000 [9],[14],[15],[16]   6,459,000 [1],[3],[5],[24]          
Investment, Identifier [Axis]: Perimeter Master Note Business Trust, Structured Secured Note - Class A                    
Schedule of Investments [Line Items]                    
Total investments at fair value 180,000 [7],[8],[9]   180,000 [7],[8],[9]   177,000 [5],[11],[12]          
Cost 182,000 [7],[8],[9]   182,000 [7],[8],[9]   182,000 [5],[11],[12]          
Investment, Identifier [Axis]: Perimeter Master Note Business Trust, Structured Secured Note - Class B                    
Schedule of Investments [Line Items]                    
Total investments at fair value 181,000 [7],[8],[9]   181,000 [7],[8],[9]   178,000 [5],[11],[12]          
Cost 182,000 [7],[8],[9]   182,000 [7],[8],[9]   182,000 [5],[11],[12]          
Investment, Identifier [Axis]: Perimeter Master Note Business Trust, Structured Secured Note - Class C                    
Schedule of Investments [Line Items]                    
Total investments at fair value 181,000 [7],[8],[9]   181,000 [7],[8],[9]   180,000 [5],[11],[12]          
Cost 182,000 [7],[8],[9]   182,000 [7],[8],[9]   182,000 [5],[11],[12]          
Investment, Identifier [Axis]: Perimeter Master Note Business Trust, Structured Secured Note - Class D                    
Schedule of Investments [Line Items]                    
Total investments at fair value 180,000 [7],[8],[9]   180,000 [7],[8],[9]   178,000 [5],[11],[12]          
Cost 182,000 [7],[8],[9]   182,000 [7],[8],[9]   182,000 [5],[11],[12]          
Investment, Identifier [Axis]: Perimeter Master Note Business Trust, Structured Secured Note - Class E                    
Schedule of Investments [Line Items]                    
Total investments at fair value 9,148,000 [7],[8],[9]   9,148,000 [7],[8],[9]   8,904,000 [5],[11],[12]          
Cost 9,274,000 [7],[8],[9]   9,274,000 [7],[8],[9]   9,274,000 [5],[11],[12]          
Investment, Identifier [Axis]: Permaconn BidCo Pty Ltd, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 7,397,000 [8],[9],[14],[16],[35]   7,397,000 [8],[9],[14],[16],[35]   6,910,000 [1],[3],[5],[12],[34]          
Cost 7,400,000 [8],[9],[14],[16],[35]   7,400,000 [8],[9],[14],[16],[35]   7,381,000 [1],[3],[5],[12],[34]          
Investment, Identifier [Axis]: Polara Enterprises, L.L.C., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 5,741,000 [9],[15],[16],[18]   5,741,000 [9],[15],[16],[18]   5,792,000 [2],[3],[4],[5]          
Cost 5,693,000 [9],[15],[16],[18]   5,693,000 [9],[15],[16],[18]   5,728,000 [2],[3],[4],[5]          
Investment, Identifier [Axis]: Polara Enterprises, L.L.C., Partnership Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,942,000 [9]   1,942,000 [9]   1,229,000 [5]          
Cost 741,000 [9]   741,000 [9]   741,000 [5]          
Investment, Identifier [Axis]: Polara Enterprises, L.L.C., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 825,000 [7],[9],[13],[15],[16]   825,000 [7],[9],[13],[15],[16]   0 [2],[3],[5],[11],[19]          
Cost 809,000 [7],[9],[13],[15],[16]   809,000 [7],[9],[13],[15],[16]   (10,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: Policy Services Company, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 49,795,000 [7],[9],[16],[17]   49,795,000 [7],[9],[16],[17]   55,406,000 [2],[3],[5],[11]          
Cost 54,594,000 [7],[9],[16],[17]   54,594,000 [7],[9],[16],[17]   55,265,000 [2],[3],[5],[11]          
Investment, Identifier [Axis]: Policy Services Company, LLC, Warrants - Class A                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [9],[14],[26]   0 [9],[14],[26]   1,321,000 [1],[5],[25]          
Cost 0 [9],[14],[26]   0 [9],[14],[26]   0 [1],[5],[25]          
Investment, Identifier [Axis]: Policy Services Company, LLC, Warrants - Class B                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [9],[14],[26]   0 [9],[14],[26]   446,000 [1],[5],[25]          
Cost 0 [9],[14],[26]   0 [9],[14],[26]   0 [1],[5],[25]          
Investment, Identifier [Axis]: Policy Services Company, LLC, Warrants - Class CC                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [9],[14],[26]   0 [9],[14],[26]   0 [1],[5],[25]          
Cost 0 [9],[14],[26]   0 [9],[14],[26]   0 [1],[5],[25]          
Investment, Identifier [Axis]: Policy Services Company, LLC, Warrants - Class D                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [9],[14],[26]   0 [9],[14],[26]   128,000 [1],[5],[25]          
Cost 0 [9],[14],[26]   0 [9],[14],[26]   0 [1],[5],[25]          
Investment, Identifier [Axis]: PowerGEM Buyer, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 13,989,000 [9],[13],[14],[16],[17]   13,989,000 [9],[13],[14],[16],[17]   9,704,000 [1],[2],[3],[5],[19]          
Cost 13,927,000 [9],[13],[14],[16],[17]   13,927,000 [9],[13],[14],[16],[17]   9,801,000 [1],[2],[3],[5],[19]          
Investment, Identifier [Axis]: PowerGEM Buyer, Inc., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[9],[13],[16],[17]   0 [7],[9],[13],[16],[17]   (37,000) [2],[3],[5],[11],[19]          
Cost (33,000) [7],[9],[13],[16],[17]   (33,000) [7],[9],[13],[16],[17]   (37,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: Premium Franchise Brands, LLC, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value 23,826,000 [9],[14],[16],[18],[27]   23,826,000 [9],[14],[16],[18],[27]   23,819,000 [1],[2],[3],[4],[5]          
Cost 23,849,000 [9],[14],[16],[18],[27]   23,849,000 [9],[14],[16],[18],[27]   23,967,000 [1],[2],[3],[4],[5]          
Investment, Identifier [Axis]: Premium Franchise Brands, LLC, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value 10,043,000 [9],[14],[16],[27]   10,043,000 [9],[14],[16],[27]   9,958,000 [1],[2],[3],[5]          
Cost 9,884,000 [9],[14],[16],[27]   9,884,000 [9],[14],[16],[27]   9,872,000 [1],[2],[3],[5]          
Investment, Identifier [Axis]: Premium Invest, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 7,352,000 [8],[9],[13],[14],[16],[21]   7,352,000 [8],[9],[13],[14],[16],[21]   6,563,000 [1],[3],[5],[12],[19],[22]          
Cost 6,681,000 [8],[9],[13],[14],[16],[21]   6,681,000 [8],[9],[13],[14],[16],[21]   6,659,000 [1],[3],[5],[12],[19],[22]          
Investment, Identifier [Axis]: Preqin MC Limited, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[12],[28]         2,500,000          
Cost [1],[3],[5],[12],[28]         2,456,000          
Investment, Identifier [Axis]: Pro-Vision Solutions Holdings, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 12,221,000 [9],[14],[15],[16]   12,221,000 [9],[14],[15],[16]   12,236,000 [1],[2],[3],[5]          
Cost 12,190,000 [9],[14],[15],[16]   12,190,000 [9],[14],[15],[16]   12,228,000 [1],[2],[3],[5]          
Investment, Identifier [Axis]: Pro-Vision Solutions Holdings, LLC, LLC Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 385,000 [7],[9],[26]   385,000 [7],[9],[26]   398,000 [5],[11],[25]          
Cost 377,000 [7],[9],[26]   377,000 [7],[9],[26]   377,000 [5],[11],[25]          
Investment, Identifier [Axis]: Pro-Vision Solutions Holdings, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 199,000 [7],[9],[13],[15],[16]   199,000 [7],[9],[13],[15],[16]   (45,000) [2],[3],[5],[11],[19]          
Cost 192,000 [7],[9],[13],[15],[16]   192,000 [7],[9],[13],[15],[16]   (47,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: Process Insights Acquisition, Inc., Common Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value 139,000 [7],[9],[26]   139,000 [7],[9],[26]   310,000 [5],[11],[25]          
Cost 368,000 [7],[9],[26]   368,000 [7],[9],[26]   368,000 [5],[11],[25]          
Investment, Identifier [Axis]: Process Insights Acquisition, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 3,164,000 [9],[14],[16],[17],[18]   3,164,000 [9],[14],[16],[17],[18]   2,829,000 [1],[2],[3],[4],[5],[19]          
Cost 3,448,000 [9],[14],[16],[17],[18]   3,448,000 [9],[14],[16],[17],[18]   2,848,000 [1],[2],[3],[4],[5],[19]          
Investment, Identifier [Axis]: Process Insights Acquisition, Inc., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,193,000 [7],[9],[16],[17]   1,193,000 [7],[9],[16],[17]   1,160,000 [2],[3],[5],[11],[19]          
Cost 1,302,000 [7],[9],[16],[17]   1,302,000 [7],[9],[16],[17]   1,162,000 [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: ProfitOptics, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 640,000 [9],[14],[15],[16]   640,000 [9],[14],[15],[16]   645,000 [1],[3],[5],[24]          
Cost 634,000 [9],[14],[15],[16]   634,000 [9],[14],[15],[16]   638,000 [1],[3],[5],[24]          
Investment, Identifier [Axis]: ProfitOptics, LLC, LLC Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 166,000 [7],[9],[26]   166,000 [7],[9],[26]   79,000 [5],[11],[25]          
Cost 65,000 [7],[9],[26]   65,000 [7],[9],[26]   65,000 [5],[11],[25]          
Investment, Identifier [Axis]: ProfitOptics, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 39,000 [9],[13],[14],[15],[16]   39,000 [9],[13],[14],[15],[16]   97,000 [3],[5],[11],[19],[24]          
Cost 37,000 [9],[13],[14],[15],[16]   37,000 [9],[13],[14],[15],[16]   95,000 [3],[5],[11],[19],[24]          
Investment, Identifier [Axis]: ProfitOptics, LLC, Senior Subordinated Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 31,000 [7],[9],[16]   31,000 [7],[9],[16]   31,000 [5],[11]          
Cost 32,000 [7],[9],[16]   32,000 [7],[9],[16]   32,000 [5],[11]          
Investment, Identifier [Axis]: Project Boost Purchaser LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [16],[17],[20] 1,994,000   1,994,000              
Cost [16],[17],[20] 1,999,000   1,999,000              
Investment, Identifier [Axis]: Protego Bidco B.V., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[11],[12],[30]         530,000          
Cost [1],[3],[5],[11],[12],[30]         614,000          
Investment, Identifier [Axis]: Protego Bidco B.V., First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value [8],[9],[14],[16],[31] 515,000   515,000              
Cost [8],[9],[14],[16],[31] 522,000   522,000              
Investment, Identifier [Axis]: Protego Bidco B.V., First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[8],[9],[16],[31] 103,000   103,000              
Cost [7],[8],[9],[16],[31] 94,000   94,000              
Investment, Identifier [Axis]: Protego Bidco B.V., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 140,000 [7],[8],[9],[16],[31]   140,000 [7],[8],[9],[16],[31]   120,000 [3],[5],[11],[12],[30]          
Cost 141,000 [7],[8],[9],[16],[31]   141,000 [7],[8],[9],[16],[31]   140,000 [3],[5],[11],[12],[30]          
Investment, Identifier [Axis]: QPE7 SPV1 BidCo Pty Ltd, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [8],[9],[14],[16],[52] 7,088,000   7,088,000              
Cost [8],[9],[14],[16],[52] 7,484,000   7,484,000              
Investment, Identifier [Axis]: QPE7 SPV1 BidCo Pty Ltd, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[12],[60]         4,024,000          
Cost [1],[3],[5],[12],[60]         4,680,000          
Investment, Identifier [Axis]: QPE7 SPV1 BidCo Pty Ltd, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[12],[60]         2,605,000          
Cost [1],[3],[5],[12],[60]         2,779,000          
Investment, Identifier [Axis]: Qima Finance LTD, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [8],[9],[13],[14],[16],[17] 1,979,000   1,979,000              
Cost [8],[9],[13],[14],[16],[17] 1,980,000   1,980,000              
Investment, Identifier [Axis]: Qualified Industries, LLC, Common Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value 191,000 [7],[9],[26]   191,000 [7],[9],[26]   91,000 [5],[11],[25]          
Cost 4,000 [7],[9],[26]   4,000 [7],[9],[26]   4,000 [5],[11],[25]          
Investment, Identifier [Axis]: Qualified Industries, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[14],[16],[27] 11,803,000   11,803,000              
Cost [7],[9],[14],[16],[27] 11,805,000   11,805,000              
Investment, Identifier [Axis]: Qualified Industries, LLC, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[28]         2,799,000          
Cost [1],[3],[5],[28]         2,801,000          
Investment, Identifier [Axis]: Qualified Industries, LLC, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value [3],[5],[11],[28]         1,053,000          
Cost [3],[5],[11],[28]         1,051,000          
Investment, Identifier [Axis]: Qualified Industries, LLC, Preferred Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value 284,000 [7],[9],[26]   284,000 [7],[9],[26]   264,000 [5],[11],[25]          
Cost 216,000 [7],[9],[26]   216,000 [7],[9],[26]   216,000 [5],[11],[25]          
Investment, Identifier [Axis]: Qualified Industries, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value (5,000) [7],[9],[13],[16],[27]   (5,000) [7],[9],[13],[16],[27]   (7,000) [3],[5],[11],[19],[28]          
Cost (6,000) [7],[9],[13],[16],[27]   (6,000) [7],[9],[13],[16],[27]   (8,000) [3],[5],[11],[19],[28]          
Investment, Identifier [Axis]: Questel Unite, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[2],[3],[5],[11],[12]         1,769,000          
Cost [1],[2],[3],[5],[11],[12]         1,987,000          
Investment, Identifier [Axis]: Questel Unite, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[2],[3],[5],[11],[12]         106,000          
Cost [1],[2],[3],[5],[11],[12]         122,000          
Investment, Identifier [Axis]: Questel Unite, First Lien Senior Secured Term Loan 3                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[2],[3],[5],[12]         1,024,000          
Cost [1],[2],[3],[5],[12]         1,017,000          
Investment, Identifier [Axis]: R1 Holdings, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 7,998,000 [9],[14],[16],[17],[18]   7,998,000 [9],[14],[16],[17],[18]   8,108,000 [1],[3],[4],[5],[24]          
Cost 7,850,000 [9],[14],[16],[17],[18]   7,850,000 [9],[14],[16],[17],[18]   7,879,000 [1],[3],[4],[5],[24]          
Investment, Identifier [Axis]: R1 Holdings, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,850,000 [7],[9],[13],[16],[17]   1,850,000 [7],[9],[13],[16],[17]   472,000 [3],[5],[11],[19],[24]          
Cost 1,811,000 [7],[9],[13],[16],[17]   1,811,000 [7],[9],[13],[16],[17]   421,000 [3],[5],[11],[19],[24]          
Investment, Identifier [Axis]: REP SEKO MERGER SUB LLC, Common Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[9],[26]   0 [7],[9],[26]   11,149,000 [5],[11],[25]          
Cost 13,113,000 [7],[9],[26]   13,113,000 [7],[9],[26]   13,113,000 [5],[11],[25]          
Investment, Identifier [Axis]: REP SEKO MERGER SUB LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 5,526,000 [7],[9],[14],[16],[17]   5,526,000 [7],[9],[14],[16],[17]   2,292,000 [1],[2],[3],[5],[11]          
Cost 6,516,000 [7],[9],[14],[16],[17]   6,516,000 [7],[9],[14],[16],[17]   2,247,000 [1],[2],[3],[5],[11]          
Investment, Identifier [Axis]: REP SEKO MERGER SUB LLC, First Out Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 2,424,000 [7],[9],[16],[17]   2,424,000 [7],[9],[16],[17]   6,255,000 [2],[3],[5],[11]          
Cost 2,383,000 [7],[9],[16],[17]   2,383,000 [7],[9],[16],[17]   6,255,000 [2],[3],[5],[11]          
Investment, Identifier [Axis]: RKD Group, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[13],[14],[16],[17] 36,337,000   36,337,000              
Cost [9],[13],[14],[16],[17] 36,303,000   36,303,000              
Investment, Identifier [Axis]: RKD Group, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[13],[16],[17] 1,421,000   1,421,000              
Cost [7],[9],[13],[16],[17] 1,419,000   1,419,000              
Investment, Identifier [Axis]: ROI Solutions LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 18,022,000 [9],[13],[14],[16],[17]   18,022,000 [9],[13],[14],[16],[17]   17,865,000 [1],[2],[3],[5],[19]          
Cost 17,795,000 [9],[13],[14],[16],[17]   17,795,000 [9],[13],[14],[16],[17]   17,882,000 [1],[2],[3],[5],[19]          
Investment, Identifier [Axis]: ROI Solutions LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value (12,000) [7],[9],[13],[16],[17]   (12,000) [7],[9],[13],[16],[17]   (55,000) [2],[3],[5],[11],[19]          
Cost (44,000) [7],[9],[13],[16],[17]   (44,000) [7],[9],[13],[16],[17]   (52,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: RPX Corporation, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 43,087,000 [9],[14],[15],[16]   43,087,000 [9],[14],[15],[16]   43,199,000 [1],[2],[3],[5]          
Cost 42,880,000 [9],[14],[15],[16]   42,880,000 [9],[14],[15],[16]   43,140,000 [1],[2],[3],[5]          
Investment, Identifier [Axis]: RPX Corporation, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value (39,000) [7],[9],[13],[15],[16]   (39,000) [7],[9],[13],[15],[16]   (63,000) [2],[3],[5],[11],[19]          
Cost (60,000) [7],[9],[13],[15],[16]   (60,000) [7],[9],[13],[15],[16]   (69,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: RR 31 LTD, Subordinated Structured Notes                    
Schedule of Investments [Line Items]                    
Total investments at fair value 2,660,000 [7],[8],[16],[17]   2,660,000 [7],[8],[16],[17]   2,658,000 [2],[3],[11],[12]          
Cost 2,625,000 [7],[8],[16],[17]   2,625,000 [7],[8],[16],[17]   2,625,000 [2],[3],[11],[12]          
Investment, Identifier [Axis]: Radiology Partners Inc., First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[14],[16],[17],[20] 7,786,000   7,786,000              
Cost [7],[14],[16],[17],[20] 7,777,000   7,777,000              
Investment, Identifier [Axis]: Randys Holdings, Inc., Common Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[26] 880,000   880,000              
Cost [7],[9],[26] 667,000   667,000              
Investment, Identifier [Axis]: Randys Holdings, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 15,092,000 [9],[13],[14],[16],[17],[18]   15,092,000 [9],[13],[14],[16],[17],[18]   12,750,000 [1],[2],[3],[4],[5],[19]          
Cost 14,819,000 [9],[13],[14],[16],[17],[18]   14,819,000 [9],[13],[14],[16],[17],[18]   12,584,000 [1],[2],[3],[4],[5],[19]          
Investment, Identifier [Axis]: Randys Holdings, Inc., Partnership Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value [5],[11],[25]         777,000          
Cost [5],[11],[25]         667,000          
Investment, Identifier [Axis]: Randys Holdings, Inc., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,431,000 [7],[9],[14],[16],[17]   1,431,000 [7],[9],[14],[16],[17]   766,000 [2],[3],[5],[11],[19]          
Cost 1,399,000 [7],[9],[14],[16],[17]   1,399,000 [7],[9],[14],[16],[17]   747,000 [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: Rapid Buyer LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 5,007,000 [9],[13],[14],[16],[17]   5,007,000 [9],[13],[14],[16],[17]   5,093,000 [1],[3],[5],[19],[28]          
Cost 5,116,000 [9],[13],[14],[16],[17]   5,116,000 [9],[13],[14],[16],[17]   5,100,000 [1],[3],[5],[19],[28]          
Investment, Identifier [Axis]: Rapid Buyer LLC, LLC Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 396,000 [7],[9],[26]   396,000 [7],[9],[26]   510,000 [5],[11],[25]          
Cost 510,000 [7],[9],[26]   510,000 [7],[9],[26]   510,000 [5],[11],[25]          
Investment, Identifier [Axis]: Rapid Buyer LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value (34,000) [7],[9],[13],[16],[17]   (34,000) [7],[9],[13],[16],[17]   (21,000) [2],[3],[5],[11],[19]          
Cost (15,000) [7],[9],[13],[16],[17]   (15,000) [7],[9],[13],[16],[17]   (20,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: Real Chemistry Intermediate III, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[13],[14],[15],[16] 34,907,000   34,907,000              
Cost [9],[13],[14],[15],[16] 34,917,000   34,917,000              
Investment, Identifier [Axis]: Real Chemistry Intermediate III, Inc., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[13],[15],[16] (34,000)   (34,000)              
Cost [7],[9],[13],[15],[16] (37,000)   (37,000)              
Investment, Identifier [Axis]: Recovery Point Systems, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 2,361,000 [9],[16],[17],[18]   2,361,000 [9],[16],[17],[18]   2,380,000 [2],[3],[4],[5]          
Cost 2,361,000 [9],[16],[17],[18]   2,361,000 [9],[16],[17],[18]   2,380,000 [2],[3],[4],[5]          
Investment, Identifier [Axis]: Renaissance Learning, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[15],[16],[20] 10,945,000   10,945,000              
Cost [7],[15],[16],[20] 11,688,000   11,688,000              
Investment, Identifier [Axis]: Renovation Parent Holdings, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 13,316,000 [9],[16],[17],[18]   13,316,000 [9],[16],[17],[18]   12,925,000 [2],[3],[4],[5]          
Cost 13,885,000 [9],[16],[17],[18]   13,885,000 [9],[16],[17],[18]   13,946,000 [2],[3],[4],[5]          
Investment, Identifier [Axis]: Renovation Parent Holdings, LLC, Partnership Equity                    
Schedule of Investments [Line Items]                    
Total investments at fair value 419,000 [7],[9],[26]   419,000 [7],[9],[26]   255,000 [5],[11],[25]          
Cost 607,000 [7],[9],[26]   607,000 [7],[9],[26]   607,000 [5],[11],[25]          
Investment, Identifier [Axis]: Riedel Beheer B.V., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 2,215,000 [8],[9],[14],[16],[21]   2,215,000 [8],[9],[14],[16],[21]   1,963,000 [1],[3],[5],[12],[22]          
Cost 2,272,000 [8],[9],[14],[16],[21]   2,272,000 [8],[9],[14],[16],[21]   2,265,000 [1],[3],[5],[12],[22]          
Investment, Identifier [Axis]: Rocade Holdings LLC                    
Schedule of Investments [Line Items]                    
Total investments at fair value 115,000,000   115,000,000       $ 12,000,000      
Investment, Identifier [Axis]: Rocade Holdings LLC, Common LP Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,551,000   1,551,000   315,000 [51] 1,092,000 [51]        
Investment, Identifier [Axis]: Rocade Holdings LLC, Common LP Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,551,000 [7],[9],[43]   1,551,000 [7],[9],[43]   315,000 [5],[11],[25],[48]          
Cost 0 [7],[9],[43]   0 [7],[9],[43]   0 [5],[11],[25],[48]          
Investment, Identifier [Axis]: Rocade Holdings LLC, Preferred LP Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 141,042,000 [7],[9],[15],[43]   141,042,000 [7],[9],[15],[43]   124,083,000 [2],[5],[11],[19],[48],[51] 114,113,000 [51]        
Cost 141,050,000 [7],[9],[15],[43]   141,050,000 [7],[9],[15],[43]   124,065,000 [2],[5],[11],[19],[48]          
Investment, Identifier [Axis]: Rocade Holdings LLC, Preferred LP Units 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value 141,042,000   141,042,000   124,083,000          
Investment, Identifier [Axis]: Rock Labor LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 5,498,000 [9],[14],[15],[16]   5,498,000 [9],[14],[15],[16]   5,478,000 [1],[2],[3],[5]          
Cost 5,408,000 [9],[14],[15],[16]   5,408,000 [9],[14],[15],[16]   5,432,000 [1],[2],[3],[5]          
Investment, Identifier [Axis]: Rock Labor LLC, LLC Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,166,000 [9]   1,166,000 [9]   961,000 [5]          
Cost 1,068,000 [9]   1,068,000 [9]   1,068,000 [5]          
Investment, Identifier [Axis]: Rock Labor LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value (6,000) [7],[9],[13],[16],[17]   (6,000) [7],[9],[13],[16],[17]   (16,000) [2],[3],[5],[11],[19]          
Cost (19,000) [7],[9],[13],[16],[17]   (19,000) [7],[9],[13],[16],[17]   (22,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: Royal Buyer, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[2],[3],[5],[19]         21,003,000          
Cost [1],[2],[3],[5],[19]         20,784,000          
Investment, Identifier [Axis]: Royal Buyer, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [2],[3],[5],[11],[19]         (2,000)          
Cost [2],[3],[5],[11],[19]         (31,000)          
Investment, Identifier [Axis]: Russell Investments US Institutional Holdco, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 4,130,000 [9],[14],[16],[17]   4,130,000 [9],[14],[16],[17]   4,067,000 [1],[2],[3],[5]          
Cost 3,967,000 [9],[14],[16],[17]   3,967,000 [9],[14],[16],[17]   3,928,000 [1],[2],[3],[5]          
Investment, Identifier [Axis]: SBP Holdings LP, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 18,842,000 [7],[9],[13],[14],[15],[16],[18]   18,842,000 [7],[9],[13],[14],[15],[16],[18]   18,113,000 [1],[3],[5],[11],[19],[24]          
Cost 18,437,000 [7],[9],[13],[14],[15],[16],[18]   18,437,000 [7],[9],[13],[14],[15],[16],[18]   17,674,000 [1],[3],[5],[11],[19],[24]          
Investment, Identifier [Axis]: SBP Holdings LP, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value (9,000) [7],[9],[13],[15],[16]   (9,000) [7],[9],[13],[15],[16]   (22,000) [2],[3],[5],[11],[19]          
Cost (52,000) [7],[9],[13],[15],[16]   (52,000) [7],[9],[13],[15],[16]   (67,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: SCP Medical Products, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[14],[16],[17] 20,071,000   20,071,000              
Cost [9],[14],[16],[17] 20,057,000   20,057,000              
Investment, Identifier [Axis]: SCP Medical Products, LLC, LLC Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[26] 232,000   232,000              
Cost [9],[26] 237,000   237,000              
Investment, Identifier [Axis]: SCP Medical Products, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[13],[16],[17] (22,000)   (22,000)              
Cost [7],[9],[13],[16],[17] (23,000)   (23,000)              
Investment, Identifier [Axis]: SISU ACQUISITIONCO., INC., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 2,426,000 [7],[9],[14],[16],[17]   2,426,000 [7],[9],[14],[16],[17]   2,296,000 [1],[2],[3],[5],[11],[19]          
Cost 2,516,000 [7],[9],[14],[16],[17]   2,516,000 [7],[9],[14],[16],[17]   2,528,000 [1],[2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: SPATCO Energy Solutions, LLC, Common Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value 681,000 [9],[26]   681,000 [9],[26]   979,000 [5],[25]          
Cost 973,000 [9],[26]   973,000 [9],[26]   960,000 [5],[25]          
Investment, Identifier [Axis]: SPATCO Energy Solutions, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 25,332,000 [9],[13],[14],[16],[17],[18]   25,332,000 [9],[13],[14],[16],[17],[18]   24,465,000 [1],[2],[3],[5],[19]          
Cost 25,193,000 [9],[13],[14],[16],[17],[18]   25,193,000 [9],[13],[14],[16],[17],[18]   24,366,000 [1],[2],[3],[5],[19]          
Investment, Identifier [Axis]: SPATCO Energy Solutions, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value (50,000) [7],[9],[13],[16],[17]   (50,000) [7],[9],[13],[16],[17]   (64,000) [2],[3],[5],[11],[19]          
Cost (67,000) [7],[9],[13],[16],[17]   (67,000) [7],[9],[13],[16],[17]   (77,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: SSCP Pegasus Midco Limited, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,178,000 [7],[8],[9],[14],[16],[36]   1,178,000 [7],[8],[9],[14],[16],[36]   881,000 [1],[3],[5],[11],[12],[19],[37]          
Cost 1,177,000 [7],[8],[9],[14],[16],[36]   1,177,000 [7],[8],[9],[14],[16],[36]   955,000 [1],[3],[5],[11],[12],[19],[37]          
Investment, Identifier [Axis]: SSCP Spring Bidco 3 Limited, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,019,000 [8],[9],[14],[16],[38]   1,019,000 [8],[9],[14],[16],[38]   941,000 [1],[3],[5],[12],[39]          
Cost 938,000 [8],[9],[14],[16],[38]   938,000 [8],[9],[14],[16],[38]   935,000 [1],[3],[5],[12],[39]          
Investment, Identifier [Axis]: STS Operating Inc, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [15],[16],[20] 1,986,000   1,986,000              
Cost [15],[16],[20] 1,990,000   1,990,000              
Investment, Identifier [Axis]: SVI International LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 641,000 [9],[14],[16],[17]   641,000 [9],[14],[16],[17]   583,000 [1],[2],[3],[5],[19]          
Cost 631,000 [9],[14],[16],[17]   631,000 [9],[14],[16],[17]   577,000 [1],[2],[3],[5],[19]          
Investment, Identifier [Axis]: SVI International LLC, LLC Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 364,000 [9]   364,000 [9]   277,000 [5]          
Cost 208,000 [9]   208,000 [9]   208,000 [5]          
Investment, Identifier [Axis]: SVI International LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[9],[13],[14],[16],[17]   0 [7],[9],[13],[14],[16],[17]   (1,000) [2],[3],[5],[11],[19]          
Cost (1,000) [7],[9],[13],[14],[16],[17]   (1,000) [7],[9],[13],[14],[16],[17]   (1,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: Saab Purchaser, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 49,871,000 [9],[13],[14],[16],[17]   49,871,000 [9],[13],[14],[16],[17]   28,148,000 [1],[2],[3],[5],[19]          
Cost 49,908,000 [9],[13],[14],[16],[17]   49,908,000 [9],[13],[14],[16],[17]   28,154,000 [1],[2],[3],[5],[19]          
Investment, Identifier [Axis]: Saab Purchaser, Inc., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value (57,000) [7],[9],[13],[16],[17]   (57,000) [7],[9],[13],[16],[17]   (38,000) [2],[3],[5],[11],[19]          
Cost (52,000) [7],[9],[13],[16],[17]   (52,000) [7],[9],[13],[16],[17]   (38,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: Sabre Global, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value [15],[16],[20] 2,830,000   2,830,000              
Cost [15],[16],[20] 2,882,000   2,882,000              
Investment, Identifier [Axis]: Sabre Global, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value [15],[16],[20] 3,335,000   3,335,000              
Cost [15],[16],[20] 3,419,000   3,419,000              
Investment, Identifier [Axis]: Safety Products Holdings, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 6,948,000 [7],[9],[14],[16],[17],[18]   6,948,000 [7],[9],[14],[16],[17],[18]   7,006,000 [1],[2],[3],[4],[5],[11]          
Cost 6,920,000 [7],[9],[14],[16],[17],[18]   6,920,000 [7],[9],[14],[16],[17],[18]   6,961,000 [1],[2],[3],[4],[5],[11]          
Investment, Identifier [Axis]: Sandvine Corporation, Class A Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [9],[14],[26]   0 [9],[14],[26]   0 [1],[5],[25]          
Cost 0 [9],[14],[26]   0 [9],[14],[26]   0 [1],[5],[25]          
Investment, Identifier [Axis]: Sandvine Corporation, Class B Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[14],[26] 0   0              
Cost [9],[14],[26] 0   0              
Investment, Identifier [Axis]: Sandvine Corporation, Class C Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [9],[14],[26]   0 [9],[14],[26]   0 [1],[5],[25]          
Cost 0 [9],[14],[26]   0 [9],[14],[26]   0 [1],[5],[25]          
Investment, Identifier [Axis]: Sandvine Corporation, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[45]         100,000          
Cost [1],[3],[5],[45]         415,000          
Investment, Identifier [Axis]: Sanoptis S.A.R.L., First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value 18,458,000 [7],[8],[9],[13],[14],[16],[31]   18,458,000 [7],[8],[9],[13],[14],[16],[31]   7,038,000 [1],[3],[5],[12],[19],[30]          
Cost 16,878,000 [7],[8],[9],[13],[14],[16],[31]   16,878,000 [7],[8],[9],[13],[14],[16],[31]   7,243,000 [1],[3],[5],[12],[19],[30]          
Investment, Identifier [Axis]: Sanoptis S.A.R.L., First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value 7,368,000 [7],[8],[9],[14],[16],[61]   7,368,000 [7],[8],[9],[14],[16],[61]   5,978,000 [1],[3],[5],[12],[56]          
Cost 6,345,000 [7],[8],[9],[14],[16],[61]   6,345,000 [7],[8],[9],[14],[16],[61]   5,884,000 [1],[3],[5],[12],[56]          
Investment, Identifier [Axis]: Sanoptis S.A.R.L., First Lien Senior Secured Term Loan 3                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[12],[56]         69,000          
Cost [1],[3],[5],[12],[56]         74,000          
Investment, Identifier [Axis]: Sansidor BV, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 2,550,000 [7],[8],[9],[13],[14],[16],[21]   2,550,000 [7],[8],[9],[13],[14],[16],[21]   1,336,000 [1],[3],[5],[12],[19],[22]          
Cost 2,437,000 [7],[8],[9],[13],[14],[16],[21]   2,437,000 [7],[8],[9],[13],[14],[16],[21]   1,440,000 [1],[3],[5],[12],[19],[22]          
Investment, Identifier [Axis]: Scaled Agile, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,589,000 [9],[14],[16],[17],[18]   1,589,000 [9],[14],[16],[17],[18]   1,605,000 [1],[2],[3],[4],[5]          
Cost 1,804,000 [9],[14],[16],[17],[18]   1,804,000 [9],[14],[16],[17],[18]   1,764,000 [1],[2],[3],[4],[5]          
Investment, Identifier [Axis]: Scaled Agile, Inc., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 292,000 [7],[9],[16],[17]   292,000 [7],[9],[16],[17]   302,000 [2],[3],[5],[11]          
Cost 340,000 [7],[9],[16],[17]   340,000 [7],[9],[16],[17]   332,000 [2],[3],[5],[11]          
Investment, Identifier [Axis]: Scientific Games Lottery, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [16],[17],[20] 3,460,000   3,460,000              
Cost [16],[17],[20] 3,465,000   3,465,000              
Investment, Identifier [Axis]: Scout Bidco B.V., First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value 4,008,000 [8],[9],[14],[16],[31]   4,008,000 [8],[9],[14],[16],[31]   3,750,000 [1],[3],[5],[12],[22]          
Cost 3,835,000 [8],[9],[14],[16],[31]   3,835,000 [8],[9],[14],[16],[31]   3,823,000 [1],[3],[5],[12],[22]          
Investment, Identifier [Axis]: Scout Bidco B.V., First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value 477,000 [8],[9],[14],[16],[27]   477,000 [8],[9],[14],[16],[27]   507,000 [1],[2],[3],[5],[12]          
Cost 508,000 [8],[9],[14],[16],[27]   508,000 [8],[9],[14],[16],[27]   508,000 [1],[2],[3],[5],[12]          
Investment, Identifier [Axis]: Scout Bidco B.V., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 192,000 [7],[8],[9],[13],[16],[31]   192,000 [7],[8],[9],[13],[16],[31]   (7,000) [3],[5],[11],[12],[19],[22]          
Cost 221,000 [7],[8],[9],[13],[16],[31]   221,000 [7],[8],[9],[13],[16],[31]   (3,000) [3],[5],[11],[12],[19],[22]          
Investment, Identifier [Axis]: Screenvision, LLC, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[16],[17] 70,583,000   70,583,000              
Cost [7],[9],[16],[17] 70,561,000   70,561,000              
Investment, Identifier [Axis]: Screenvision, LLC, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[16],[17] 13,948,000   13,948,000              
Cost [7],[9],[16],[17] 13,935,000   13,935,000              
Investment, Identifier [Axis]: Screenvision, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[13],[16],[17] (155,000)   (155,000)              
Cost [7],[9],[13],[16],[17] (155,000)   (155,000)              
Investment, Identifier [Axis]: Sedgwick Claims Management Services Inc, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [15],[20] 1,272,000   1,272,000              
Cost [15],[20] 1,274,000   1,274,000              
Investment, Identifier [Axis]: Selenium Designated Activity Company, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [8],[9],[14],[16],[40] 4,301,000   4,301,000              
Cost [8],[9],[14],[16],[40] 3,944,000   3,944,000              
Investment, Identifier [Axis]: Sereni Capital NV, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[12],[30]         903,000          
Cost [1],[3],[5],[12],[30]         926,000          
Investment, Identifier [Axis]: Sereni Capital NV, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value [3],[5],[11],[12],[30]         1,524,000          
Cost [3],[5],[11],[12],[30]         1,565,000          
Investment, Identifier [Axis]: Shelf Bidco Ltd, Common Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value 4,620,000 [7],[8],[9]   4,620,000 [7],[8],[9]   4,668,000 [5],[11],[12]          
Cost 1,200,000 [7],[8],[9]   1,200,000 [7],[8],[9]   1,200,000 [5],[11],[12]          
Investment, Identifier [Axis]: Shelf Bidco Ltd, Second Out Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 44,015,000 [7],[8],[9],[16],[17]   44,015,000 [7],[8],[9],[16],[17]   44,315,000 [2],[3],[5],[11],[12]          
Cost 44,005,000 [7],[8],[9],[16],[17]   44,005,000 [7],[8],[9],[16],[17]   44,383,000 [2],[3],[5],[11],[12]          
Investment, Identifier [Axis]: Sinari Invest, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,980,000 [8],[9],[13],[14],[16],[21]   1,980,000 [8],[9],[13],[14],[16],[21]   1,858,000 [1],[3],[5],[12],[19],[30]          
Cost 1,949,000 [8],[9],[13],[14],[16],[21]   1,949,000 [8],[9],[13],[14],[16],[21]   1,943,000 [1],[3],[5],[12],[19],[30]          
Investment, Identifier [Axis]: Skyvault Holdings LLC , LLC Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 8,342,000   8,342,000   1,913,000          
Investment, Identifier [Axis]: Skyvault Holdings LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 25,028,000 [9],[13],[14],[62]   25,028,000 [9],[13],[14],[62]   5,738,000 [5],[11],[19],[63],[64] 0 [64]        
Cost 25,028,000 [9],[13],[14],[62]   25,028,000 [9],[13],[14],[62]   5,738,000 [5],[11],[19],[63]          
Investment, Identifier [Axis]: Skyvault Holdings LLC, LLC Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 8,342,000 [7],[9],[26],[62]   8,342,000 [7],[9],[26],[62]   1,913,000 [5],[11],[25],[63],[64] 0 [64]        
Cost 8,356,000 [7],[9],[26],[62]   8,356,000 [7],[9],[26],[62]   1,913,000 [5],[11],[25],[63]          
Investment, Identifier [Axis]: SmartShift Group, Inc., Common Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value 940,000 [7],[9],[26]   940,000 [7],[9],[26]   799,000 [5],[11],[25]          
Cost 455,000 [7],[9],[26]   455,000 [7],[9],[26]   455,000 [5],[11],[25]          
Investment, Identifier [Axis]: SmartShift Group, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[14],[16],[18],[27] 19,320,000   19,320,000              
Cost [9],[14],[16],[18],[27] 18,975,000   18,975,000              
Investment, Identifier [Axis]: SmartShift Group, Inc., First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[2],[3],[5]         5,675,000          
Cost [1],[2],[3],[5]         5,653,000          
Investment, Identifier [Axis]: SmartShift Group, Inc., First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[2],[3],[5]         13,757,000          
Cost [1],[2],[3],[5]         13,469,000          
Investment, Identifier [Axis]: SmartShift Group, Inc., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[9],[13],[16],[27]   0 [7],[9],[13],[16],[27]   0 [2],[3],[5],[11],[19]          
Cost (45,000) [7],[9],[13],[16],[27]   (45,000) [7],[9],[13],[16],[27]   (54,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: Smartling, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 16,008,000 [9],[14],[16],[18],[27]   16,008,000 [9],[14],[16],[18],[27]   16,132,000 [1],[2],[3],[4],[5]          
Cost 15,880,000 [9],[14],[16],[18],[27]   15,880,000 [9],[14],[16],[18],[27]   15,963,000 [1],[2],[3],[4],[5]          
Investment, Identifier [Axis]: Smartling, Inc., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[9],[13],[16],[27]   0 [7],[9],[13],[16],[27]   0 [2],[3],[5],[11],[19]          
Cost (7,000) [7],[9],[13],[16],[27]   (7,000) [7],[9],[13],[16],[27]   (10,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: Solenis, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [16],[17],[20] 1,973,000   1,973,000              
Cost [16],[17],[20] 1,992,000   1,992,000              
Investment, Identifier [Axis]: Solo Buyer, L.P., Common Equity                    
Schedule of Investments [Line Items]                    
Total investments at fair value 300,000 [9],[26]   300,000 [9],[26]   325,000 [5],[25]          
Cost 516,000 [9],[26]   516,000 [9],[26]   516,000 [5],[25]          
Investment, Identifier [Axis]: Solo Buyer, L.P., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 15,803,000 [7],[9],[16],[17]   15,803,000 [7],[9],[16],[17]   15,776,000 [2],[3],[5],[11]          
Cost 15,915,000 [7],[9],[16],[17]   15,915,000 [7],[9],[16],[17]   15,999,000 [2],[3],[5],[11]          
Investment, Identifier [Axis]: Solo Buyer, L.P., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 816,000 [7],[9],[13],[16],[17]   816,000 [7],[9],[13],[16],[17]   466,000 [2],[3],[5],[11],[19]          
Cost 838,000 [7],[9],[13],[16],[17]   838,000 [7],[9],[13],[16],[17]   499,000 [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: Sonicwall US Holdings Inc, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[14],[16],[17],[20] 31,995,000   31,995,000              
Cost [7],[14],[16],[17],[20] 32,798,000   32,798,000              
Investment, Identifier [Axis]: Sovos Compliance LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [15],[16],[20] 2,002,000   2,002,000              
Cost [15],[16],[20] 2,008,000   2,008,000              
Investment, Identifier [Axis]: Sparus Holdings, LLC (f/k/a Sparus Holdings, Inc.), First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 2,282,000 [9],[14],[16],[17],[18]   2,282,000 [9],[14],[16],[17],[18]   2,053,000 [1],[3],[4],[5],[19],[28]          
Cost 2,263,000 [9],[14],[16],[17],[18]   2,263,000 [9],[14],[16],[17],[18]   2,039,000 [1],[3],[4],[5],[19],[28]          
Investment, Identifier [Axis]: Sparus Holdings, LLC (f/k/a Sparus Holdings, Inc.), Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[9],[13],[16],[17]   0 [7],[9],[13],[16],[17]   (1,000) [3],[5],[11],[19],[28]          
Cost (1,000) [7],[9],[13],[16],[17]   (1,000) [7],[9],[13],[16],[17]   (2,000) [3],[5],[11],[19],[28]          
Investment, Identifier [Axis]: Spatial Business Systems LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 20,420,000 [9],[14],[15],[16]   20,420,000 [9],[14],[15],[16]   10,825,000 [1],[2],[3],[5]          
Cost 20,387,000 [9],[14],[15],[16]   20,387,000 [9],[14],[15],[16]   10,815,000 [1],[2],[3],[5]          
Investment, Identifier [Axis]: Spatial Business Systems LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value (14,000) [7],[9],[13],[15],[16]   (14,000) [7],[9],[13],[15],[16]   (21,000) [2],[3],[5],[11],[19]          
Cost (18,000) [7],[9],[13],[15],[16]   (18,000) [7],[9],[13],[15],[16]   (22,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: Specialty Building Prod (USLumber), First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [15],[16],[20] 7,775,000   7,775,000              
Cost [15],[16],[20] 7,855,000   7,855,000              
Investment, Identifier [Axis]: Starnmeer B.V., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 13,240,000 [8],[9],[14],[16],[27]   13,240,000 [8],[9],[14],[16],[27]   13,388,000 [1],[3],[5],[12],[28]          
Cost 13,323,000 [8],[9],[14],[16],[27]   13,323,000 [8],[9],[14],[16],[27]   13,293,000 [1],[3],[5],[12],[28]          
Investment, Identifier [Axis]: Superjet Buyer, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 17,456,000 [9],[13],[14],[16],[17],[18]   17,456,000 [9],[13],[14],[16],[17],[18]   35,468,000 [1],[2],[3],[4],[5],[19]          
Cost 17,456,000 [9],[13],[14],[16],[17],[18]   17,456,000 [9],[13],[14],[16],[17],[18]   35,542,000 [1],[2],[3],[4],[5],[19]          
Investment, Identifier [Axis]: Superjet Buyer, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value (30,000) [7],[9],[13],[16],[17]   (30,000) [7],[9],[13],[16],[17]   (63,000) [2],[3],[5],[11],[19]          
Cost (30,000) [7],[9],[13],[16],[17]   (30,000) [7],[9],[13],[16],[17]   (56,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: Swoop Intermediate III, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[13],[14],[15],[16] 32,714,000   32,714,000              
Cost [9],[13],[14],[15],[16] 32,505,000   32,505,000              
Investment, Identifier [Axis]: Swoop Intermediate III, Inc., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[13],[14],[15],[16] 0   0              
Cost [9],[13],[14],[15],[16] (36,000)   (36,000)              
Investment, Identifier [Axis]: Syniverse Holdings, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[16],[17] 7,745,000   7,745,000              
Cost [7],[16],[17] 7,803,000   7,803,000              
Investment, Identifier [Axis]: Syniverse Holdings, Inc., Series A Preferred Equity                    
Schedule of Investments [Line Items]                    
Total investments at fair value 11,136,000 [9],[14]   11,136,000 [9],[14]   10,076,000 [1],[5]          
Cost 10,812,000 [9],[14]   10,812,000 [9],[14]   10,167,000 [1],[5]          
Investment, Identifier [Axis]: TA SL Cayman Aggregator Corp., Common Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value 44,000 [7],[9],[26]   44,000 [7],[9],[26]   41,000 [5],[11],[25]          
Cost 24,000 [7],[9],[26]   24,000 [7],[9],[26]   24,000 [5],[11],[25]          
Investment, Identifier [Axis]: TA SL Cayman Aggregator Corp., Subordinated Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,525,000 [7],[9]   1,525,000 [7],[9]   1,349,000 [5],[11]          
Cost 1,517,000 [7],[9]   1,517,000 [7],[9]   1,339,000 [5],[11]          
Investment, Identifier [Axis]: TAPCO Buyer LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 36,092,000 [9],[13],[14],[15],[16],[17]   36,092,000 [9],[13],[14],[15],[16],[17]   18,882,000 [1],[2],[3],[5],[19]          
Cost 36,089,000 [9],[13],[14],[15],[16],[17]   36,089,000 [9],[13],[14],[15],[16],[17]   18,894,000 [1],[2],[3],[5],[19]          
Investment, Identifier [Axis]: TAPCO Buyer LLC, LLC Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 632,000 [9],[26]   632,000 [9],[26]   353,000 [5],[25]          
Cost 509,000 [9],[26]   509,000 [9],[26]   353,000 [5],[25]          
Investment, Identifier [Axis]: TAPCO Buyer LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value (51,000) [7],[9],[13],[15],[16]   (51,000) [7],[9],[13],[15],[16]   (61,000) [2],[3],[5],[11],[19]          
Cost (43,000) [7],[9],[13],[15],[16]   (43,000) [7],[9],[13],[15],[16]   (58,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: THG Acquisition, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 10,111,000 [9],[13],[14],[15],[16]   10,111,000 [9],[13],[14],[15],[16]   9,765,000 [1],[3],[5],[19],[24]          
Cost 10,092,000 [9],[13],[14],[15],[16]   10,092,000 [9],[13],[14],[15],[16]   9,768,000 [1],[3],[5],[19],[24]          
Investment, Identifier [Axis]: THG Acquisition, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 98,000 [7],[9],[13],[15],[16]   98,000 [7],[9],[13],[15],[16]   93,000 [3],[5],[11],[19],[24]          
Cost 96,000 [7],[9],[13],[15],[16]   96,000 [7],[9],[13],[15],[16]   94,000 [3],[5],[11],[19],[24]          
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value 5,905,000 [9],[14],[16],[17]   5,905,000 [9],[14],[16],[17]   4,680,000 [1],[2],[3],[5]          
Cost 5,859,000 [9],[14],[16],[17]   5,859,000 [9],[14],[16],[17]   4,683,000 [1],[2],[3],[5]          
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value 937,000 [9],[14],[16],[17]   937,000 [9],[14],[16],[17]   953,000 [1],[2],[3],[5]          
Cost 928,000 [9],[14],[16],[17]   928,000 [9],[14],[16],[17]   949,000 [1],[2],[3],[5]          
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., First Lien Senior Secured Term Loan 3                    
Schedule of Investments [Line Items]                    
Total investments at fair value 18,815,000 [9],[13],[14],[16],[17]   18,815,000 [9],[13],[14],[16],[17]   1,192,000 [1],[2],[3],[5]          
Cost 18,480,000 [9],[13],[14],[16],[17]   18,480,000 [9],[13],[14],[16],[17]   1,190,000 [1],[2],[3],[5]          
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., First Lien Senior Secured Term Loan 4                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[2],[3],[5],[19]         15,715,000          
Cost [1],[2],[3],[5],[19]         15,721,000          
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., Partnership Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 33,000 [7],[9]   33,000 [7],[9]   26,000 [5],[11]          
Cost 5,000 [7],[9]   5,000 [7],[9]   5,000 [5],[11]          
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[9],[13],[16],[17]   0 [7],[9],[13],[16],[17]   (4,000) [2],[3],[5],[11],[19]          
Cost (4,000) [7],[9],[13],[16],[17]   (4,000) [7],[9],[13],[16],[17]   (5,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: Tank Holding Corp, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value 13,740,000 [9],[15],[16],[18]   13,740,000 [9],[15],[16],[18]   13,792,000 [3],[4],[5],[28]          
Cost 13,728,000 [9],[15],[16],[18]   13,728,000 [9],[15],[16],[18]   13,795,000 [3],[4],[5],[28]          
Investment, Identifier [Axis]: Tank Holding Corp, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value 6,629,000 [7],[9],[15],[16]   6,629,000 [7],[9],[15],[16]   6,346,000 [3],[5],[11],[19],[24]          
Cost 6,563,000 [7],[9],[15],[16]   6,563,000 [7],[9],[15],[16]   6,277,000 [3],[5],[11],[19],[24]          
Investment, Identifier [Axis]: Tank Holding Corp, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value (7,000) [7],[9],[13],[15],[16]   (7,000) [7],[9],[13],[15],[16]   (9,000) [3],[5],[11],[19],[28]          
Cost (6,000) [7],[9],[13],[15],[16]   (6,000) [7],[9],[13],[15],[16]   (8,000) [3],[5],[11],[19],[28]          
Investment, Identifier [Axis]: Tanqueray Bidco Limited, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,776,000 [8],[9],[13],[14],[16],[36]   1,776,000 [8],[9],[13],[14],[16],[36]   1,643,000 [1],[3],[5],[12],[19],[37]          
Cost 1,531,000 [8],[9],[13],[14],[16],[36]   1,531,000 [8],[9],[13],[14],[16],[36]   1,518,000 [1],[3],[5],[12],[19],[37]          
Investment, Identifier [Axis]: Team Air Distributing, LLC, Partnership Equity                    
Schedule of Investments [Line Items]                    
Total investments at fair value 429,000 [9],[26]   429,000 [9],[26]   625,000 [5],[25]          
Cost 523,000 [9],[26]   523,000 [9],[26]   523,000 [5],[25]          
Investment, Identifier [Axis]: Team Air Distributing, LLC, Subordinated Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9] 741,000   741,000              
Cost [7],[9] 742,000   742,000              
Investment, Identifier [Axis]: Team Air Distributing, LLC, Subordinated Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value [5],[11]         114,000          
Cost [5],[11]         115,000          
Investment, Identifier [Axis]: Team Air Distributing, LLC, Subordinated Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value [5],[11]         588,000          
Cost [5],[11]         590,000          
Investment, Identifier [Axis]: Team Air Distributing, LLC, Subordinated Term Loan 3                    
Schedule of Investments [Line Items]                    
Total investments at fair value [5],[11]         35,000          
Cost [5],[11]         35,000          
Investment, Identifier [Axis]: Team Health Holdings Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [15],[16],[20] 7,185,000   7,185,000              
Cost [15],[16],[20] 7,204,000   7,204,000              
Investment, Identifier [Axis]: Technology Service Stream BidCo Pty Ltd, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 812,000 [8],[9],[13],[14],[16],[35]   812,000 [8],[9],[13],[14],[16],[35]   677,000 [1],[3],[5],[12],[19],[23]          
Cost 809,000 [8],[9],[13],[14],[16],[35]   809,000 [8],[9],[13],[14],[16],[35]   725,000 [1],[3],[5],[12],[19],[23]          
Investment, Identifier [Axis]: Techone B.V., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 6,409,000 [8],[9],[14],[16],[21]   6,409,000 [8],[9],[14],[16],[21]   5,631,000 [1],[3],[5],[12],[22]          
Cost 5,906,000 [8],[9],[14],[16],[21]   5,906,000 [8],[9],[14],[16],[21]   5,888,000 [1],[3],[5],[12],[22]          
Investment, Identifier [Axis]: Techone B.V., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value (1,000) [7],[8],[9],[13],[16],[21]   (1,000) [7],[8],[9],[13],[16],[21]   (2,000) [3],[5],[11],[12],[19],[22]          
Cost (11,000) [7],[8],[9],[13],[16],[21]   (11,000) [7],[8],[9],[13],[16],[21]   (11,000) [3],[5],[11],[12],[19],[22]          
Investment, Identifier [Axis]: Tencarva Machinery Company, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 25,281,000 [9],[13],[14],[16],[17],[18]   25,281,000 [9],[13],[14],[16],[17],[18]   10,626,000 [1],[2],[3],[4],[5]          
Cost 25,245,000 [9],[13],[14],[16],[17],[18]   25,245,000 [9],[13],[14],[16],[17],[18]   10,620,000 [1],[2],[3],[4],[5]          
Investment, Identifier [Axis]: Tencarva Machinery Company, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value (46,000) [7],[9],[13],[16],[17]   (46,000) [7],[9],[13],[16],[17]   (31,000) [2],[3],[5],[11],[19]          
Cost (42,000) [7],[9],[13],[16],[17]   (42,000) [7],[9],[13],[16],[17]   (33,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: Terrybear, Inc., Common Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[26] 14,000   14,000              
Cost [9],[26] 239,000   239,000              
Investment, Identifier [Axis]: Terrybear, Inc., Partnership Equity                    
Schedule of Investments [Line Items]                    
Total investments at fair value [5],[25]         120,000          
Cost [5],[25]         239,000          
Investment, Identifier [Axis]: Terrybear, Inc., Subordinated Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 265,000 [7],[9]   265,000 [7],[9]   268,000 [5],[11]          
Cost 289,000 [7],[9]   289,000 [7],[9]   282,000 [5],[11]          
Investment, Identifier [Axis]: The Caprock Group, Inc. (aka TA/TCG Holdings, LLC), First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 23,288,000 [9],[13],[14],[16],[17],[18]   23,288,000 [9],[13],[14],[16],[17],[18]   3,950,000 [1],[2],[3],[4],[5]          
Cost 23,300,000 [9],[13],[14],[16],[17],[18]   23,300,000 [9],[13],[14],[16],[17],[18]   3,911,000 [1],[2],[3],[4],[5]          
Investment, Identifier [Axis]: The Caprock Group, Inc. (aka TA/TCG Holdings, LLC), Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value (33,000) [7],[9],[13],[16],[17]   (33,000) [7],[9],[13],[16],[17]   0 [2],[3],[5],[11],[19]          
Cost (30,000) [7],[9],[13],[16],[17]   (30,000) [7],[9],[13],[16],[17]   (11,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: The Caprock Group, Inc. (aka TA/TCG Holdings, LLC), Subordinated Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [3],[5],[11],[28]         5,656,000          
Cost [3],[5],[11],[28]         5,595,000          
Investment, Identifier [Axis]: The Octave Music Group, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 18,598,000 [7],[14],[17],[20]   18,598,000 [7],[14],[17],[20]   10,785,000 [1],[2],[3]          
Cost 18,664,000 [7],[14],[17],[20]   18,664,000 [7],[14],[17],[20]   10,780,000 [1],[2],[3]          
Investment, Identifier [Axis]: The Octave Music Group, Inc., Partnership Equity                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,025,000 [7],[9],[26]   1,025,000 [7],[9],[26]   1,139,000 [5],[11]          
Cost 354,000 [7],[9],[26]   354,000 [7],[9],[26]   354,000 [5],[11]          
Investment, Identifier [Axis]: The Travel Corporation, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [15],[16],[20] 4,881,000   4,881,000              
Cost [15],[16],[20] 4,916,000   4,916,000              
Investment, Identifier [Axis]: Thompson Rivers LLC, Member Interest                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,855,000   1,855,000   2,860,000 5,304,000        
Investment, Identifier [Axis]: Thompson Rivers LLC, Member Interest                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,855,000 [7],[8],[43],[46]   1,855,000 [7],[8],[43],[46]   2,860,000 [11],[25],[47],[48]          
Cost 8,846,000 [7],[8],[43],[46]   8,846,000 [7],[8],[43],[46]   9,797,000 [11],[25],[47],[48]          
Investment, Identifier [Axis]: TricorBraun Holdings Inc, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value [15],[16],[20] 3,981,000   3,981,000              
Cost [15],[16],[20] 3,987,000   3,987,000              
Investment, Identifier [Axis]: Trident Maritime Systems, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[2],[3],[5],[11]         8,577,000          
Cost [1],[2],[3],[5],[11]         9,045,000          
Investment, Identifier [Axis]: Trident Maritime Systems, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[14],[16],[17] 7,856,000   7,856,000              
Cost [7],[9],[14],[16],[17] 9,200,000   9,200,000              
Investment, Identifier [Axis]: Trident TPI Holdings Inc., First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value [13],[16],[17],[20] 6,184,000   6,184,000              
Cost [13],[16],[17],[20] 6,253,000   6,253,000              
Investment, Identifier [Axis]: Trintech, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 12,302,000 [9],[14],[15],[16]   12,302,000 [9],[14],[15],[16]   12,252,000 [1],[3],[5],[24]          
Cost 12,087,000 [9],[14],[15],[16]   12,087,000 [9],[14],[15],[16]   12,139,000 [1],[3],[5],[24]          
Investment, Identifier [Axis]: Trintech, Inc., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 402,000 [7],[9],[13],[15],[16]   402,000 [7],[9],[13],[15],[16]   386,000 [3],[5],[11],[19],[24]          
Cost 378,000 [7],[9],[13],[15],[16]   378,000 [7],[9],[13],[15],[16]   373,000 [3],[5],[11],[19],[24]          
Investment, Identifier [Axis]: Turbo Buyer, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 11,808,000 [9],[14],[16],[17],[18]   11,808,000 [9],[14],[16],[17],[18]   11,765,000 [1],[2],[3],[4],[5]          
Cost 12,310,000 [9],[14],[16],[17],[18]   12,310,000 [9],[14],[16],[17],[18]   12,322,000 [1],[2],[3],[4],[5]          
Investment, Identifier [Axis]: Turnberry Solutions, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 2,572,000 [9],[15],[16],[18]   2,572,000 [9],[15],[16],[18]   2,592,000 [3],[4],[5],[24]          
Cost 2,562,000 [9],[15],[16],[18]   2,562,000 [9],[15],[16],[18]   2,574,000 [3],[4],[5],[24]          
Investment, Identifier [Axis]: UBC Ledgers Holding AB, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value 770,000 [8],[9],[14],[16],[21]   770,000 [8],[9],[14],[16],[21]   536,000 [1],[3],[5],[12],[22]          
Cost 709,000 [8],[9],[14],[16],[21]   709,000 [8],[9],[14],[16],[21]   556,000 [1],[3],[5],[12],[22]          
Investment, Identifier [Axis]: UBC Ledgers Holding AB, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,704,000 [8],[9],[13],[14],[16],[65]   1,704,000 [8],[9],[13],[14],[16],[65]   1,450,000 [1],[3],[5],[12],[19],[66]          
Cost 1,493,000 [8],[9],[13],[14],[16],[65]   1,493,000 [8],[9],[13],[14],[16],[65]   1,486,000 [1],[3],[5],[12],[19],[66]          
Investment, Identifier [Axis]: UHY Advisors, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 15,860,000 [9],[13],[14],[16],[17]   15,860,000 [9],[13],[14],[16],[17]   14,692,000 [1],[2],[3],[5],[19]          
Cost 15,646,000 [9],[13],[14],[16],[17]   15,646,000 [9],[13],[14],[16],[17]   14,702,000 [1],[2],[3],[5],[19]          
Investment, Identifier [Axis]: UHY Advisors, Inc., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 309,000 [7],[9],[13],[16],[17]   309,000 [7],[9],[13],[16],[17]   (40,000) [2],[3],[5],[11],[19]          
Cost 280,000 [7],[9],[13],[16],[17]   280,000 [7],[9],[13],[16],[17]   (38,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: UKFast Leaders Limited, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 4,783,000 [8],[9],[14],[16],[36]   4,783,000 [8],[9],[14],[16],[36]   4,281,000 [1],[3],[5],[12],[37]          
Cost 5,050,000 [8],[9],[14],[16],[36]   5,050,000 [8],[9],[14],[16],[36]   5,036,000 [1],[3],[5],[12],[37]          
Investment, Identifier [Axis]: US Bank National Association Series 2025-1, Structured Note - Class R                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[8],[9],[16],[17] 3,895,000   3,895,000              
Cost [7],[8],[9],[16],[17] 3,839,000   3,839,000              
Investment, Identifier [Axis]: US Bank National Association Series 2025-2, Structured Note - Class R                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[8],[15],[16] 10,250,000   10,250,000              
Cost [7],[8],[15],[16] 10,250,000   10,250,000              
Investment, Identifier [Axis]: USI Inc, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [16],[17],[20] 1,997,000   1,997,000              
Cost [16],[17],[20] 2,000,000   2,000,000              
Investment, Identifier [Axis]: USLS Acquisition, Inc. (f/k/a US Legal Support, Inc.), First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value 8,326,000 [9],[13],[14],[16],[17],[18]   8,326,000 [9],[13],[14],[16],[17],[18]   5,770,000 [1],[2],[3],[4],[5]          
Cost 8,274,000 [9],[13],[14],[16],[17],[18]   8,274,000 [9],[13],[14],[16],[17],[18]   5,777,000 [1],[2],[3],[4],[5]          
Investment, Identifier [Axis]: USLS Acquisition, Inc. (f/k/a US Legal Support, Inc.), First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value 2,108,000 [9],[16],[17],[18]   2,108,000 [9],[16],[17],[18]   2,122,000 [1],[2],[3],[5]          
Cost 2,115,000 [9],[16],[17],[18]   2,115,000 [9],[16],[17],[18]   2,123,000 [1],[2],[3],[5]          
Investment, Identifier [Axis]: Union Bidco Limited, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 2,808,000 [8],[9],[13],[14],[16],[38]   2,808,000 [8],[9],[13],[14],[16],[38]   2,492,000 [1],[3],[5],[12],[19],[39]          
Cost 2,562,000 [8],[9],[13],[14],[16],[38]   2,562,000 [8],[9],[13],[14],[16],[38]   2,389,000 [1],[3],[5],[12],[19],[39]          
Investment, Identifier [Axis]: United Therapy Holding III GmbH, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[12],[19],[22]         1,120,000          
Cost [1],[3],[5],[12],[19],[22]         1,594,000          
Investment, Identifier [Axis]: Unither (Uniholding), First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 2,227,000 [8],[9],[13],[14],[16],[21]   2,227,000 [8],[9],[13],[14],[16],[21]   1,962,000 [1],[3],[5],[12],[19],[22]          
Cost 1,973,000 [8],[9],[13],[14],[16],[21]   1,973,000 [8],[9],[13],[14],[16],[21]   1,965,000 [1],[3],[5],[12],[19],[22]          
Investment, Identifier [Axis]: Unosquare, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[13],[14],[15] 8,906,000   8,906,000              
Cost [9],[13],[14],[15] 8,894,000   8,894,000              
Investment, Identifier [Axis]: Unosquare, LLC, LLC Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[26] 384,000   384,000              
Cost [9],[26] 384,000   384,000              
Investment, Identifier [Axis]: Unosquare, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[13],[15],[16] (27,000)   (27,000)              
Cost [7],[9],[13],[15],[16] (28,000)   (28,000)              
Investment, Identifier [Axis]: Utac Ceram, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value 249,000 [8],[9],[14],[16],[17],[18]   249,000 [8],[9],[14],[16],[17],[18]   235,000 [1],[2],[3],[5],[12]          
Cost 250,000 [8],[9],[14],[16],[17],[18]   250,000 [8],[9],[14],[16],[17],[18]   245,000 [1],[2],[3],[5],[12]          
Investment, Identifier [Axis]: Utac Ceram, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value 966,000 [8],[9],[14],[16],[18],[21]   966,000 [8],[9],[14],[16],[18],[21]   800,000 [1],[3],[5],[12],[22]          
Cost 994,000 [8],[9],[14],[16],[18],[21]   994,000 [8],[9],[14],[16],[18],[21]   968,000 [1],[3],[5],[12],[22]          
Investment, Identifier [Axis]: VB Spine Intermediary II LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[17],[18] 66,128,000   66,128,000              
Cost [7],[9],[17],[18] 66,113,000   66,113,000              
Investment, Identifier [Axis]: VB Spine Intermediary II LLC, LLC Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[16],[18],[26] 0   0              
Cost [7],[9],[16],[18],[26] 0   0              
Investment, Identifier [Axis]: VP Holding Company, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[2],[3],[4],[5],[11]         20,627,000          
Cost [1],[2],[3],[4],[5],[11]         20,905,000          
Investment, Identifier [Axis]: Validity, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[3],[5],[24]         939,000          
Cost [1],[3],[5],[24]         934,000          
Investment, Identifier [Axis]: Vibrantz Technologies Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[16],[17],[18],[20] 9,993,000   9,993,000              
Cost [7],[16],[17],[18],[20] 11,821,000   11,821,000              
Investment, Identifier [Axis]: Victoria Bidco Limited, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 5,446,000 [8],[9],[14],[16],[18],[38]   5,446,000 [8],[9],[14],[16],[18],[38]   5,135,000 [1],[3],[5],[12],[39]          
Cost 5,562,000 [8],[9],[14],[16],[18],[38]   5,562,000 [8],[9],[14],[16],[18],[38]   5,545,000 [1],[3],[5],[12],[39]          
Investment, Identifier [Axis]: Vision Solutions Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [16],[17],[18],[20] 960,000   960,000              
Cost [16],[17],[18],[20] 934,000   934,000              
Investment, Identifier [Axis]: Vista Global Holding Ltd, Structured Secured Note - Class C                    
Schedule of Investments [Line Items]                    
Total investments at fair value 3,869,000 [7],[8],[18]   3,869,000 [7],[8],[18]   3,962,000 [5],[11],[12]          
Cost 3,900,000 [7],[8],[18]   3,900,000 [7],[8],[18]   4,000,000 [5],[11],[12]          
Investment, Identifier [Axis]: VistaJet Pass Through Trust 2021-1B, Structured Secured Note - Class B                    
Schedule of Investments [Line Items]                    
Total investments at fair value [5],[11],[12]         6,321,000          
Cost [5],[11],[12]         6,429,000          
Investment, Identifier [Axis]: Vital Buyer, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [2],[3],[4],[5],[11]         4,742,000          
Cost [2],[3],[4],[5],[11]         4,707,000          
Investment, Identifier [Axis]: Vital Buyer, LLC, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value [7],[9],[13],[14],[16],[17],[18] 61,066,000   61,066,000              
Cost [7],[9],[13],[14],[16],[17],[18] 60,988,000   60,988,000              
Investment, Identifier [Axis]: Vital Buyer, LLC, Partnership Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 29,000 [9]   29,000 [9]   26,000 [5]          
Cost 11,000 [9]   11,000 [9]   11,000 [5]          
Investment, Identifier [Axis]: Voya CLO 2024-5, Ltd., Subordinated Structured Notes                    
Schedule of Investments [Line Items]                    
Total investments at fair value 5,070,000 [7],[8],[16],[17],[18]   5,070,000 [7],[8],[16],[17],[18]   5,074,000 [2],[3],[11],[12]          
Cost 5,000,000 [7],[8],[16],[17],[18]   5,000,000 [7],[8],[16],[17],[18]   5,000,000 [2],[3],[11],[12]          
Investment, Identifier [Axis]: W2O Holdings, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[2],[3],[5],[11]         3,122,000          
Cost [1],[2],[3],[5],[11]         3,130,000          
Investment, Identifier [Axis]: WEST-NR ACQUISITIONCO, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[13],[14],[17],[18] 23,891,000   23,891,000              
Cost [9],[13],[14],[17],[18] 23,696,000   23,696,000              
Investment, Identifier [Axis]: WEST-NR ACQUISITIONCO, LLC, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[2],[3],[5],[19]         5,133,000          
Cost [1],[2],[3],[5],[19]         5,135,000          
Investment, Identifier [Axis]: WEST-NR ACQUISITIONCO, LLC, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[2],[3],[5]         12,898,000          
Cost [1],[2],[3],[5]         12,902,000          
Investment, Identifier [Axis]: WEST-NR ACQUISITIONCO, LLC, First Lien Senior Secured Term Loan 3                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[2],[3],[5],[19]         4,765,000          
Cost [1],[2],[3],[5],[19]         4,745,000          
Investment, Identifier [Axis]: WWEC Holdings III Corp, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 8,982,000 [9],[13],[16],[17],[18]   8,982,000 [9],[13],[16],[17],[18]   8,927,000 [1],[2],[3],[5],[19]          
Cost 8,821,000 [9],[13],[16],[17],[18]   8,821,000 [9],[13],[16],[17],[18]   8,878,000 [1],[2],[3],[5],[19]          
Investment, Identifier [Axis]: WWEC Holdings III Corp, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value (20,000) [9],[13],[16],[17],[18]   (20,000) [9],[13],[16],[17],[18]   (47,000) [2],[3],[5],[11],[19]          
Cost (39,000) [9],[13],[16],[17],[18]   (39,000) [9],[13],[16],[17],[18]   (54,000) [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: Waccamaw River LLC, Member Interest                    
Schedule of Investments [Line Items]                    
Total investments at fair value 5,433,000 [7],[8],[43],[46]   5,433,000 [7],[8],[43],[46]   10,730,000 [11],[12],[47],[48]          
Cost 18,071,000 [7],[8],[43],[46]   18,071,000 [7],[8],[43],[46]   22,996,000 [11],[12],[47],[48]          
Investment, Identifier [Axis]: Waccamaw River LLC, Member Interest                    
Schedule of Investments [Line Items]                    
Total investments at fair value 5,433,000   5,433,000   10,730,000 $ 15,470,000        
Investment, Identifier [Axis]: Whitcraft Holdings, Inc., First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value 49,768,000 [7],[9],[13],[14],[16],[17],[18]   49,768,000 [7],[9],[13],[14],[16],[17],[18]   11,264,000 [1],[2],[3],[5]          
Cost 49,985,000 [7],[9],[13],[14],[16],[17],[18]   49,985,000 [7],[9],[13],[14],[16],[17],[18]   11,407,000 [1],[2],[3],[5]          
Investment, Identifier [Axis]: Whitcraft Holdings, Inc., First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[2],[3],[5],[19]         (227,000)          
Cost [1],[2],[3],[5],[19]         (209,000)          
Investment, Identifier [Axis]: Whitcraft Holdings, Inc., First Lien Senior Secured Term Loan 3                    
Schedule of Investments [Line Items]                    
Total investments at fair value [3],[5],[11],[24]         10,190,000          
Cost [3],[5],[11],[24]         9,879,000          
Investment, Identifier [Axis]: Whitcraft Holdings, Inc., LP Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,474,000 [7],[9],[18],[26]   1,474,000 [7],[9],[18],[26]   1,300,000 [5],[11],[25]          
Cost 841,000 [7],[9],[18],[26]   841,000 [7],[9],[18],[26]   841,000 [5],[11],[25]          
Investment, Identifier [Axis]: Whitcraft Holdings, Inc., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 5,455,000 [7],[9],[13],[16],[17],[18]   5,455,000 [7],[9],[13],[16],[17],[18]   1,325,000 [3],[5],[11],[19],[24]          
Cost 5,423,000 [7],[9],[13],[16],[17],[18]   5,423,000 [7],[9],[13],[16],[17],[18]   1,255,000 [3],[5],[11],[19],[24]          
Investment, Identifier [Axis]: White Bidco Limited, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,619,000 [8],[9],[13],[14],[16],[18],[31]   1,619,000 [8],[9],[13],[14],[16],[18],[31]   1,747,000 [1],[2],[3],[5],[11],[12],[19]          
Cost 1,605,000 [8],[9],[13],[14],[16],[18],[31]   1,605,000 [8],[9],[13],[14],[16],[18],[31]   1,695,000 [1],[2],[3],[5],[11],[12],[19]          
Investment, Identifier [Axis]: White Bidco Limited, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value [8],[9],[14],[16],[17],[18] 1,723,000   1,723,000              
Cost [8],[9],[14],[16],[17],[18] 1,711,000   1,711,000              
Investment, Identifier [Axis]: White Bidco Limited, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value [8],[9],[14],[16],[17],[18] 518,000   518,000              
Cost [8],[9],[14],[16],[17],[18] 519,000   519,000              
Investment, Identifier [Axis]: Wilsonart LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [16],[17],[20] 4,664,000   4,664,000              
Cost [16],[17],[20] 4,705,000   4,705,000              
Investment, Identifier [Axis]: Windstream Services LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[16],[17],[18],[20] 2,371,000   2,371,000              
Cost [9],[16],[17],[18],[20] 2,371,000   2,371,000              
Investment, Identifier [Axis]: Woodland Foods, LLC, Common Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,026,000 [9],[26]   1,026,000 [9],[26]   921,000 [5],[25]          
Cost 1,204,000 [9],[26]   1,204,000 [9],[26]   1,204,000 [5],[25]          
Investment, Identifier [Axis]: Woodland Foods, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 18,593,000 [9],[14],[16],[17],[18]   18,593,000 [9],[14],[16],[17],[18]   8,749,000 [1],[2],[3],[4],[5]          
Cost 18,570,000 [9],[14],[16],[17],[18]   18,570,000 [9],[14],[16],[17],[18]   8,738,000 [1],[2],[3],[4],[5]          
Investment, Identifier [Axis]: Woodland Foods, LLC, Preferred Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value [5]         309,000          
Cost [5]         309,000          
Investment, Identifier [Axis]: Woodland Foods, LLC, Preferred Stock 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9] 358,000   358,000              
Cost [9] 358,000   358,000              
Investment, Identifier [Axis]: Woodland Foods, LLC, Preferred Stock 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9] 122,000   122,000              
Cost [9] 123,000   123,000              
Investment, Identifier [Axis]: Woodland Foods, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value (21,000) [7],[9],[13],[16],[17],[18]   (21,000) [7],[9],[13],[16],[17],[18]   755,000 [2],[3],[5],[11],[19]          
Cost (19,000) [7],[9],[13],[16],[17],[18]   (19,000) [7],[9],[13],[16],[17],[18]   754,000 [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: World 50, Inc., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 32,797,000 [9],[14],[16],[18],[27]   32,797,000 [9],[14],[16],[18],[27]   32,783,000 [1],[3],[4],[5],[24]          
Cost 32,272,000 [9],[14],[16],[18],[27]   32,272,000 [9],[14],[16],[18],[27]   32,449,000 [1],[3],[4],[5],[24]          
Investment, Identifier [Axis]: World 50, Inc., Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 0 [7],[9],[13],[16],[18],[27]   0 [7],[9],[13],[16],[18],[27]   (14,000) [3],[5],[11],[19],[24]          
Cost (26,000) [7],[9],[13],[16],[18],[27]   (26,000) [7],[9],[13],[16],[18],[27]   (30,000) [3],[5],[11],[19],[24]          
Investment, Identifier [Axis]: X Corp., First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [16],[17],[18],[20] 6,808,000   6,808,000              
Cost [16],[17],[18],[20] 6,732,000   6,732,000              
Investment, Identifier [Axis]: Xeinadin Bidco Limited, Common Stock                    
Schedule of Investments [Line Items]                    
Total investments at fair value 984,000 [7],[8],[9],[18],[26]   984,000 [7],[8],[9],[18],[26]   458,000 [5],[11],[12],[25]          
Cost 452,000 [7],[8],[9],[18],[26]   452,000 [7],[8],[9],[18],[26]   452,000 [5],[11],[12],[25]          
Investment, Identifier [Axis]: Xeinadin Bidco Limited, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,096,000 [8],[9],[14],[16],[18],[31]   1,096,000 [8],[9],[14],[16],[18],[31]   431,000 [1],[3],[5],[12],[30]          
Cost 1,000,000 [8],[9],[14],[16],[18],[31]   1,000,000 [8],[9],[14],[16],[18],[31]   466,000 [1],[3],[5],[12],[30]          
Investment, Identifier [Axis]: Xeinadin Bidco Limited, First Lien Senior Secured Term Loan 2                    
Schedule of Investments [Line Items]                    
Total investments at fair value 21,940,000 [8],[9],[13],[14],[16],[18],[38]   21,940,000 [8],[9],[13],[14],[16],[18],[38]   18,283,000 [1],[3],[5],[12],[19],[39]          
Cost 20,276,000 [8],[9],[13],[14],[16],[18],[38]   20,276,000 [8],[9],[13],[14],[16],[18],[38]   18,539,000 [1],[3],[5],[12],[19],[39]          
Investment, Identifier [Axis]: Xeinadin Bidco Limited, Subordinated Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 6,476,000 [7],[8],[9],[16],[18]   6,476,000 [7],[8],[9],[16],[18]   5,185,000 [5],[11],[12]          
Cost 6,102,000 [7],[8],[9],[16],[18]   6,102,000 [7],[8],[9],[16],[18]   5,194,000 [5],[11],[12]          
Investment, Identifier [Axis]: ZB Holdco LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value [1],[2],[3],[4],[5],[19]         11,291,000          
Cost [1],[2],[3],[4],[5],[19]         11,287,000          
Investment, Identifier [Axis]: ZB Holdco LLC, First Lien Senior Secured Term Loan 1                    
Schedule of Investments [Line Items]                    
Total investments at fair value [9],[13],[14],[16],[17],[18] 25,352,000   25,352,000              
Cost [9],[13],[14],[16],[17],[18] 25,326,000   25,326,000              
Investment, Identifier [Axis]: ZB Holdco LLC, LLC Units                    
Schedule of Investments [Line Items]                    
Total investments at fair value 298,000 [9],[26]   298,000 [9],[26]   197,000 [5],[25]          
Cost 121,000 [9],[26]   121,000 [9],[26]   153,000 [5],[25]          
Investment, Identifier [Axis]: ZB Holdco LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 2,447,000 [7],[9],[13],[16],[17]   2,447,000 [7],[9],[13],[16],[17]   495,000 [2],[3],[5],[11],[19]          
Cost 2,453,000 [7],[9],[13],[16],[17]   2,453,000 [7],[9],[13],[16],[17]   498,000 [2],[3],[5],[11],[19]          
Investment, Identifier [Axis]: Zeppelin Bidco Limited                    
Schedule of Investments [Line Items]                    
Total investments at fair value [8],[9],[14],[26] 0   0              
Cost [8],[9],[14],[26] 0   0              
Investment, Identifier [Axis]: Zeppelin Bidco Limited, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 1,284,000 [8],[9],[14],[16],[18],[38]   1,284,000 [8],[9],[14],[16],[18],[38]   2,345,000 [1],[3],[5],[12],[39]          
Cost 995,000 [8],[9],[14],[16],[18],[38]   995,000 [8],[9],[14],[16],[18],[38]   3,128,000 [1],[3],[5],[12],[39]          
Investment, Identifier [Axis]: eShipping, LLC, First Lien Senior Secured Term Loan                    
Schedule of Investments [Line Items]                    
Total investments at fair value 3,792,000 [9],[14],[15],[16],[18]   3,792,000 [9],[14],[15],[16],[18]   4,423,000 [1],[3],[4],[5],[24]          
Cost 3,762,000 [9],[14],[15],[16],[18]   3,762,000 [9],[14],[15],[16],[18]   4,377,000 [1],[3],[4],[5],[24]          
Investment, Identifier [Axis]: eShipping, LLC, Revolver                    
Schedule of Investments [Line Items]                    
Total investments at fair value 50,000 [7],[9],[13],[15],[16]   50,000 [7],[9],[13],[15],[16]   0 [3],[5],[11],[19],[24]          
Cost 44,000 [7],[9],[13],[15],[16]   $ 44,000 [7],[9],[13],[15],[16]   $ (7,000) [3],[5],[11],[19],[24]          
Single Portfolio Company | Fair Value | Portfolio Company Investment Risk                    
Schedule of Investments [Line Items]                    
Percentage of Total Portfolio     3.20%   4.00%          
Level 3                    
Schedule of Investments [Line Items]                    
Total investments at fair value $ 4,021,527,000   $ 4,021,527,000   $ 2,888,065,000          
New Portfolio Investments                    
Schedule of Investments [Line Items]                    
Investments | investment 61 28 134 47            
Purchases of portfolio investments $ 447,200,000 $ 233,300,000 $ 1,509,600,000 $ 489,800,000            
Existing Portfolio                    
Schedule of Investments [Line Items]                    
Purchases of portfolio investments 503,400,000 $ 98,900,000 702,400,000 394,600,000            
Equity Co-Investments                    
Schedule of Investments [Line Items]                    
Purchases of portfolio investments 7,000,000   7,000,000              
Additional Investment In Joint Ventures Investments                    
Schedule of Investments [Line Items]                    
Purchases of portfolio investments       1,500,000            
Equity shares                    
Schedule of Investments [Line Items]                    
Total investments at fair value 366,880,000   366,880,000   337,684,000          
Cost 329,693,000   329,693,000   298,038,000          
Equity shares | Level 3                    
Schedule of Investments [Line Items]                    
Total investments at fair value 363,138,000   363,138,000   $ 337,684,000          
Equity shares | Market Approach | Yield Analysis                    
Schedule of Investments [Line Items]                    
Number of investments | investment         2          
Total investments at fair value         $ 20,400,000          
Senior debt and 1st lien notes                    
Schedule of Investments [Line Items]                    
Total investments at fair value 3,798,999,000   3,798,999,000   2,503,156,000          
Cost 3,814,013,000   3,814,013,000   2,552,342,000          
Senior debt and 1st lien notes | Level 3                    
Schedule of Investments [Line Items]                    
Total investments at fair value $ 3,478,502,000   $ 3,478,502,000   $ 2,402,177,000          
Senior debt and 1st lien notes | Yield Analysis | Market Approach                    
Schedule of Investments [Line Items]                    
Number of investments | investment 6   6   3          
Total investments at fair value $ 14,900,000   $ 14,900,000   $ 23,200,000          
Senior debt and 1st lien notes | Market Approach | Yield Analysis                    
Schedule of Investments [Line Items]                    
Number of investments | investment         1          
Total investments at fair value         $ 4,200,000          
Subordinated debt and 2nd lien notes                    
Schedule of Investments [Line Items]                    
Total investments at fair value 187,919,000   187,919,000   122,748,000          
Cost 191,676,000   191,676,000   125,971,000          
Subordinated debt and 2nd lien notes | Level 3                    
Schedule of Investments [Line Items]                    
Total investments at fair value $ 161,104,000   161,104,000   $ 110,909,000          
Subordinated debt and 2nd lien notes | Yield Analysis | Expected Recovery                    
Schedule of Investments [Line Items]                    
Number of investments | investment         1          
Total investments at fair value         $ 5,700,000          
Investments With No Previous Contractual Commitment To Provide Financing                    
Schedule of Investments [Line Items]                    
Purchases of portfolio investments     2,065,500,000 796,700,000            
Investment With Previous Commitment To Provide Financing                    
Schedule of Investments [Line Items]                    
Purchases of portfolio investments     $ 153,500,000 $ 89,300,000            
Investment Denominated In Australian Dollars                    
Schedule of Investments [Line Items]                    
Number of investments | investment 14   14   15          
Investment Denominated In Canadian Dollars                    
Schedule of Investments [Line Items]                    
Number of investments | investment 2   2   1          
Investment Denominated In Danish Kroner                    
Schedule of Investments [Line Items]                    
Number of investments | investment 2   2   1          
Investment Denominated In Euros                    
Schedule of Investments [Line Items]                    
Number of investments | investment 70   70   76          
Investment Denominated In Swiss Francs                    
Schedule of Investments [Line Items]                    
Number of investments | investment 2   2   2          
Investment Denominated In Swedish Krona                    
Schedule of Investments [Line Items]                    
Number of investments | investment 1   1   2          
Investment Denominated In New Zealand Dollars                    
Schedule of Investments [Line Items]                    
Number of investments | investment 2   2   2          
Investment Denominated In Norwegian Krone                    
Schedule of Investments [Line Items]                    
Number of investments | investment 1   1   1          
Investment Denominated In British Pounds Sterling                    
Schedule of Investments [Line Items]                    
Number of investments | investment 30   30   25          
[1] Some or all of the investment is or will be encumbered as security for the Revolving Credit Facility.
[2] The interest rate on these loans is subject to 3 Month SOFR, which as of December 31, 2024 was 4.30510%.
[3] Debt investment includes interest rate floor feature.
[4] Some or all of the investment is or will be encumbered as security for the BPCC Debt Securitization.
[5] The fair value of the investment was determined using significant unobservable inputs.
[6] PIK non-accrual investment.
[7] Some or all of the investment is or will be encumbered as security for the Company’s senior secured credit facility with Sumitomo Mitsui Banking Corporation initially entered into in March 2023 (as amended, restated, and otherwise modified from time to time, the “SMBC Credit Facility”).
[8] Investment is not a qualifying investment as defined under Section 55(a) of the 1940 Act. Non-qualifying assets represent 16.9% of total investments at fair value as of September 30, 2025. Qualifying assets must represent at least 70% of total assets at the time of acquisition of any additional non-qualifying assets. If at any time qualifying assets do not represent at least 70% of the Company’s total assets, the Company will be precluded from acquiring any additional non-qualifying asset until such time as it complies with the requirements of Section 55(a).
[9] The fair value of the investment was determined using significant unobservable inputs.
[10] PIK non-accrual investment.
[11] Some or all of the investment is or will be encumbered as security for the SMBC Credit Facility.
[12] Investment is not a qualifying investment as defined under Section 55(a) of the 1940 Act. Non-qualifying assets represent 22.9% of total investments at fair value as of December 31, 2024. Qualifying assets must represent at least 70% of total assets at the time of acquisition of any additional non-qualifying assets. If at any time qualifying assets do not represent at least 70% of the Company’s total assets, the Company will be precluded from acquiring any additional non-qualifying asset until such time as it complies with the requirements of Section 55(a).
[13] Position or portion thereof is an unfunded loan or equity commitment.
[14] Some or all of the investment is or will be encumbered as security for BPC Funding LLC’s $800.0 million senior secured revolving credit facility with BNP Paribas (as amended, restated and modified from time to time, the “Revolving Credit Facility”).
[15] The interest rate on these loans is subject to 1 Month SOFR, which as of September 30, 2025 was 4.12920%.
[16] Debt investment includes interest rate floor feature.
[17] The interest rate on these loans is subject to 3 Month SOFR, which as of September 30, 2025 was 3.97639%.
[18] Some or all of the investment is or will be encumbered as security for the Company’s term debt securitization (as initially completed in August 2023 and refinanced and upsized in September 2024, and as amended, restated and modified from time to time, the “BPCC Debt Securitization”).
[19] Position or portion thereof is an unfunded loan or equity commitment.
[20] Some or all of the investment is or will be encumbered as security for BPCC Senior Finance I, LLC’s $250.0 million senior secured credit facility with Bank of America, N.A. (the “BANA SPV Credit Facility”).
[21] The interest rate on these loans is subject to 3 Month EURIBOR, which as of September 30, 2025 was 2.03200%.
[22] The interest rate on these loans is subject to 3 Month EURIBOR, which as of December 31, 2024 was 2.71400%.
[23] The interest rate on these loans is subject to 6 Month BBSY, which as of December 31, 2024 was 4.49250%.
[24] The interest rate on these loans is subject to 1 Month SOFR, which as of December 31, 2024 was 4.33249%.
[25] Investment is non-income producing.
[26] Investment is non-income producing.
[27] The interest rate on these loans is subject to 6 Month SOFR, which as of September 30, 2025 was 3.84590%.
[28] The interest rate on these loans is subject to 6 Month SOFR, which as of December 31, 2024 was 4.25001%.
[29] Non-accrual investment.
[30] The interest rate on these loans is subject to 6 Month EURIBOR, which as of December 31, 2024 was 2.56800%.
[31] The interest rate on these loans is subject to 6 Month EURIBOR, which as of September 30, 2025 was 2.09600%.
[32] The interest rate on these loans is subject to 1 Month SONIA, which as of September 30, 2025 was 3.97500%.
[33] The interest rate on these loans is subject to 6 Month BBSY, which as of September 30, 2025 was 3.74600%.
[34] The interest rate on these loans is subject to 3 Month BBSY, which as of December 31, 2024 was 4.41630%.
[35] The interest rate on these loans is subject to 3 Month BBSY, which as of September 30, 2025 was 3.57640%.
[36] The interest rate on these loans is subject to 3 Month SONIA, which as of September 30, 2025 was 3.97260%.
[37] The interest rate on these loans is subject to 3 Month SONIA, which as of December 31, 2024 was 4.62330%.
[38] The interest rate on these loans is subject to 6 Month SONIA, which as of September 30, 2025 was 3.93900%.
[39] The interest rate on these loans is subject to 6 Month SONIA, which as of December 31, 2024 was 4.56370%.
[40] The interest rate on these loans is subject to 1 Month EURIBOR, which as of September 30, 2025 was 1.92900%.
[41] The interest rate on these loans is subject to 1 Month EURIBOR, which as of December 31, 2024 was 2.84500%.
[42] The interest rate on these loans is subject to 1 Month STIBOR, which as of December 31, 2024 was 2.59100%.
[43] As defined in the 1940 Act, the Company is deemed to be an “affiliated person” of the portfolio company as the Company owns between 5% or more, up to 25% (inclusive), of the portfolio company’s voting securities (“non-controlled affiliate”). Transactions related to investments in non-controlled “Affiliate Investments” for the nine months ended September 30, 2025 were as follows:
December 31, 2024
Value
Gross Additions
(a)
Gross Reductions (b)Amount of Realized Gain (Loss)Amount of Unrealized Gain (Loss)September 30,
2025
Value
Amount of Interest or Dividends Credited to Income(c)
Portfolio CompanyType of Investment
Biolam Group (d)
First Lien Senior Secured Term
Loan (EURIBOR + 4.50%,
12.5% PIK)(e)
$— $3,355 $(55)$$1,274 $4,577 $(14)
Common Stock
(1,703,014 shares)
— — — — — — — 
Convertible Bonds
(3,173,310 shares)
— — — — — — — 
Ordinary Shares
(30,382,002 shares)
— — — — — — — 
Preferred Stock A
(83,384 shares)
— — — — — — — 
Preferred Stock A2
(27,077 shares)
— — — — — — — 
Preferred Stock B
(3,058,432 shares)
— — — — — — — 
Preferred Stock C
(22,307 shares)
— — — — — — — 
Preferred Stock O1
(2,673,324 shares)
— — — — — — — 
Preferred Stock O2
(269,231 shares)
— — — — — — — 
Warrants
(5,200,000 units)
— — — — — — — 
— 3,355 (55)1,274 4,577 (14)
Coastal Marina Holdings, LLC (d)
Subordinated Term Loan (8.0% Cash)
7,885 38 — — 7,931 535 
Subordinated Term Loan (8.0% Cash)
3,635 14 — — 3,656 243 
LLC Units (1,759,051 units)
8,426 — — — 1,566 9,992 — 
19,946 52 — — 1,581 21,579 778 
CPCF BPCC LLC
9.1% Member Interest
8,889 — (8,706)— (175)236 
8,889 — (8,706)— (175)236 
Eclipse Business Capital, LLC (d)
Revolver (SOFR + 6.50%, 10.8% Cash)
7,123 2,128 (4,300)— (10)4,941 588 
Second Lien Senior Secured Term Loan (7.5% Cash)
3,209 — — (3)3,209 187 
LLC units (63,139,338 units)
96,603 16 — — 1,878 98,497 8,748 
106,935 2,147 (4,300)— 1,865 106,647 9,523 
December 31, 2024
Value
Gross Additions
(a)
Gross Reductions (b)Amount of Realized Gain (Loss)Amount of Unrealized Gain (Loss)September 30,
2025
Value
Amount of Interest or Dividends Credited to Income(c)
Portfolio CompanyType of Investment
Rocade Holdings LLC (d)
Preferred LP Units (115,000 units) (SOFR + 6.00%, 10.3% PIK)
$124,083 $16,985 $— $— $(26)$141,042 $9,985 
Common LP Units (30.8 units)
315 — — — 1,236 1,551 399 
124,398 16,985 — — 1,210 142,593 10,384 
Thompson Rivers LLC
6.3% Member Interest
2,860 — (951)— (54)1,855 — 
2,860 — (951)— (54)1,855 — 
Waccamaw River LLC
20% Member Interest
10,730 — (4,925)— (372)5,433 745 
10,730 — (4,925)— (372)5,433 745 
Total Affiliate Investments$273,758 $22,539 $(18,937)$3 $5,329 $282,692 $21,652 
(a) Gross additions include increases in the cost basis of investments resulting from new investments, follow-on investments, payment-in-kind interest or dividends, the amortization of any unearned income or discounts on debt investments, as applicable.
(b)     Gross reductions include decreases in the total cost basis of investments resulting from principal repayments, sales and return of capital.
(c)    Represents the total amount of interest, fees or dividends credited to income for the portion of the year an investment was included in the Affiliate category.
(d) The fair value of the investment was determined using significant unobservable inputs.
(e) Non-accrual investment.
[44] Non-accrual investment.
[45] Non-accrual investment.
[46] Portfolio company does not issue shares or units; member interest is based on commitments.
[47] Portfolio company does not issue shares or units; member interest is based on commitments.
[48] As defined in the 1940 Act, the Company is deemed to be an “affiliated person” of the portfolio company as the Company owns between 5% or more, up to 25% (inclusive), of the portfolio company’s voting securities (“non-controlled affiliate”). Transactions related to investments in non-controlled “Affiliate Investments” for the year ended December 31, 2024 were as follows:
December 31, 2023
Value
Gross Additions
(a)
Gross Reductions (b)Amount of Realized Gain (Loss)Amount of Unrealized Gain (Loss)December 31, 2024
Value
Amount of Interest or Dividends Credited to Income(c)
Portfolio CompanyType of Investment
Coastal Marina Holdings, LLC (d)
Subordinated Term Loan (8.0% Cash)
$7,824 $48 $— $— $13 $7,885 $714 
Subordinated Term Loan (8.0% Cash)
3,434 201 — — — 3,635 356 
LLC Units (1,759,051 units)
6,080 2,776 — — (430)8,426 — 
17,338 3,025 — — (417)19,946 1,070 
CPCF BPCC LLC
9.1% Member Interest
7,763 1,519 (212)— (181)8,889 1,236 
7,763 1,519 (212)— (181)8,889 1,236 
Eclipse Business Capital, LLC (d)
Revolver (SOFR + 7.25%, 11.9% Cash)
3,915 19,522 (16,300)— (14)7,123 465 
Second Lien Senior Secured Term Loan (7.5% Cash)
3,209 — — (4)3,209 341 
LLC units (63,139,338 units)
102,917 47 — — (6,361)96,603 10,513 
110,041 19,573 (16,300)— (6,379)106,935 11,319 
Rocade Holdings LLC (d)
Preferred LP Units (108,000 units) (SOFR + 6.0% PIK, 10.3% PIK)
114,113 13,289 (3,337)— 18 124,083 13,289 
Common LP Units (30.8 units)
1,092 — — — (777)315 — 
115,205 13,289 (3,337)— (759)124,398 13,289 
Thompson Rivers LLC
6.3% Member Interest
5,304 — (2,378)— (66)2,860 — 
5,304 — (2,378)— (66)2,860 — 
Waccamaw River LLC
20% Member Interest
15,470 — (2,087)— (2,653)10,730 3,534 
15,470 — (2,087)— (2,653)10,730 3,534 
Total Affiliate Investments$271,121 $37,406 $(24,314)$ $(10,455)$273,758 $30,448 
(a) Gross additions include increases in the cost basis of investments resulting from new investments, follow-on investments, payment-in-kind interest or dividends, the amortization of any unearned income or discounts on debt investments, as applicable.
(b)     Gross reductions include decreases in the total cost basis of investments resulting from principal repayments, sales and return of capital.
(c)    Represents the total amount of interest, fees or dividends credited to income for the portion of the year an investment was included in the Affiliate category.
(d) The fair value of the investment was determined using significant unobservable inputs.
[49] The interest rate on these loans is subject to 3 Month CORRA, which as of September 30, 2025 was 2.56000%.
[50] The interest rate on these loans is subject to 3 Month CORRA, which as of December 31, 2024 was 3.15158%.
[51] The fair value of the investment was determined using significant unobservable inputs.
[52] The interest rate on these loans is subject to 1 Month BBSY, which as of September 30, 2025 was 3.53630%.
[53] The interest rate on these loans is subject to 3 Month BKBM, which as of September 30, 2025 was 2.93000%.
[54] The interest rate on these loans is subject to 3 Month BKBM, which as of December 31, 2024 was 4.27000%.
[55] The interest rate on these loans is subject to 3 Month SARON, which as of September 30, 2025 was -0.04090%.
[56] The interest rate on these loans is subject to 6 Month SARON, which as of December 31, 2024 was 1.01720%.
[57] The interest rate on these loans is subject to 1 Month SONIA, which as of December 31, 2024 was 4.71030%.
[58] The interest rate on these loans is subject to 1 Month NIBOR, which as of September 30, 2025 was 4.04000%.
[59] The interest rate on these loans is subject to 1 Month NIBOR, which as of December 31, 2024 was 4.61000%.
[60] The interest rate on these loans is subject to 1 Month BBSY, which as of December 31, 2024 was 4.32250%.
[61] The interest rate on these loans is subject to 6 Month SARON, which as of September 30, 2025 was -0.04508%.
[62] As defined in in the 1940 Act, the Company is deemed to be both an “affiliated person” and “control” the portfolio company because it owns more than 25% of the portfolio company’s outstanding voting securities or it has the power to exercise control over the management of policies of such portfolio company (including through a management agreement). Transactions as of and during the nine months ended September 30, 2025 in which the portfolio company is deemed to be a “Control Investment” of the Company were as follows:
December 31, 2024
Value
Gross Additions
(a)
Gross Reductions (b)Amount of Realized Gain (Loss)Amount of Unrealized Gain (Loss)September 30,
2025
Value
Amount of Interest or Dividends Credited to Income(c)
Portfolio CompanyType of Investment
Skyvault Holdings LLC (d)
First Lien Senior Secured Term Loan
(12.0% Cash)
$5,738 $19,579 $(289)$— $— $25,028 $1,483 
LLC Units
(8,342,544 units)
1,913 6,443 — — (14)8,342 — 
Total Control Investments$7,651 $26,022 $(289)$ $(14)$33,370 $1,483 
(a) Gross additions include increases in the cost basis of investments resulting from new investments, follow-on investments, payment-in-kind interest or dividends, the amortization of any unearned income or discounts on debt investments, as applicable.
(b)     Gross reductions include decreases in the total cost basis of investments resulting from principal repayments, sales and return of capital.
(c)    Represents the total amount of interest, fees or dividends credited to income for the portion of the year an investment was included in the Affiliate category.
(d) The fair value of the investment was determined using significant unobservable inputs.
[63] As defined in in the 1940 Act, the Company is deemed to be both an “affiliated person” and “control” the portfolio company because it owns more than 25% of the portfolio company’s outstanding voting securities or it has the power to exercise control over the management of policies of such portfolio company (including through a management agreement). Transactions as of and during the year ended December 31, 2024 in which the portfolio company is deemed to be a “Control Investment” of the Company were as follows:
December 31, 2023
Value
Gross Additions
(a)
Gross Reductions (b)Amount of Realized Gain (Loss)Amount of Unrealized Gain (Loss)December 31, 2024
Value
Amount of Interest or Dividends Credited to Income(c)
Portfolio CompanyType of Investment
Skyvault Holdings LLC (d)
First Lien Senior Secured Term Loan
(12.0% PIK)
$— $5,738 $— $— $— $5,738 $57 
LLC Units
(1,912,719.3 units)
— 1,913 — — — 1,913 — 
Total Control Investments$ $7,651 $ $ $ $7,651 $57 
(a) Gross additions include increases in the cost basis of investments resulting from new investments, follow-on investments, payment-in-kind interest or dividends, the amortization of any unearned income or discounts on debt investments, as applicable.
(b)     Gross reductions include decreases in the total cost basis of investments resulting from principal repayments, sales and return of capital.
(c)    Represents the total amount of interest, fees or dividends credited to income for the portion of the year an investment was included in the Affiliate category.
(d) The fair value of the investment was determined using significant unobservable inputs.
[64] The fair value of the investment was determined using significant unobservable inputs.
[65] The interest rate on these loans is subject to 3 Month STIBOR, which as of September 30, 2025 was 1.88600%.
[66] The interest rate on these loans is subject to 3 Month STIBOR, which as of December 31, 2024 was 2.54200%.