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Schedule of Investments in and Advances to Affiliates (Details) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [1],[2],[3],[4],[5],[6],[7] $ 1,476,561  
Fair Value, ending balance [8],[9],[10],[11],[12],[13],[14] 1,785,299  
Control investments    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 61,859  
Amount of Interest or Dividends Credited in Income 1,870  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 57,280  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (1,188)  
Fair Value, ending balance 56,092  
Affiliate investments    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 249,046  
Amount of Interest or Dividends Credited in Income 22,650  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 190,206  
Gross Additions 133,847  
Gross Reductions (37,789)  
Amount of Realized Gain/(Loss) 273  
Amount of Unrealized Gain/(Loss) 6,354  
Fair Value, ending balance 292,891  
Total Control & Affiliate Investments    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 310,905  
Amount of Interest or Dividends Credited in Income 24,520  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 190,206  
Gross Additions 191,127  
Gross Reductions (37,789)  
Amount of Realized Gain/(Loss) 273  
Amount of Unrealized Gain/(Loss) 5,166  
Fair Value, ending balance 348,983  
Investment, Identifier [Axis]: 360 QUOTE TOPCO, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 23,677 [15] $ 23,372 [16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[16] 18,698  
Fair Value, ending balance [14],[15] 23,203  
Investment, Identifier [Axis]: 360 QUOTE TOPCO, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 3,346 3,346
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 2,676  
Fair Value, ending balance [14] 3,279  
Investment, Identifier [Axis]: AAC NEW HOLDCO INC., Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments   433
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 428  
Investment, Identifier [Axis]: AAC NEW HOLDCO INC., First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 181 [10] $ 14,364
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 14,206  
Fair Value, ending balance [10],[14] 181  
Investment, Identifier [Axis]: AAC NEW HOLDCO INC., First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [10] 2,933  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [10],[14] 2,933  
Investment, Identifier [Axis]: AAC NEW HOLDCO INC., First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [10] 2,933  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [10],[14] $ 2,933  
Investment, Identifier [Axis]: AAC NEW HOLDCO INC., Shares common stock    
Schedule of Investments [Line Items]    
Shares (in shares) 617,803 [10],[17] 374,543 [18]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] $ 1,173  
Fair Value, ending balance [10],[14] $ 0  
Investment, Identifier [Axis]: AAC NEW HOLDCO INC., Shares preferred stock    
Schedule of Investments [Line Items]    
Shares (in shares) [10],[17] 6,257,941  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [10],[14] $ 5,702  
Investment, Identifier [Axis]: AAC NEW HOLDCO INC., Warrants (Expiration - December 11, 2025)    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 1,030  
Fair Value, ending balance [14] 0  
Investment, Identifier [Axis]: AAC New Holdco Inc., First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 181  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 181  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance 181  
Investment, Identifier [Axis]: AAC New Holdco Inc., First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 2,933  
Amount of Interest or Dividends Credited in Income 1  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 2,933  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance 2,933  
Investment, Identifier [Axis]: AAC New Holdco Inc., First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 2,933  
Amount of Interest or Dividends Credited in Income 1  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 2,933  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance 2,933  
Investment, Identifier [Axis]: AAC New Holdco Inc., Warrants    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance $ 0  
Investment, Identifier [Axis]: AAC New Holdco Inc., shares of common stock    
Schedule of Investments [Line Items]    
Shares (in shares) 617,803  
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance $ 0  
Investment, Identifier [Axis]: AAC New Holdco Inc., shares of preferred stock    
Schedule of Investments [Line Items]    
Shares (in shares) 6,257,941  
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 5,702  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance $ 5,702  
Investment, Identifier [Axis]: ACACIA BUYERCO V LLC, Class B-2 Units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,000,000 [17],[19],[20] 1,000,000 [18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] $ 1,000  
Fair Value, ending balance [14],[19],[20] 552  
Investment, Identifier [Axis]: ACACIA BUYERCO V LLC, Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments   $ 7,500
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 7,500  
Investment, Identifier [Axis]: ACACIA BUYERCO V LLC, First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 10,000 5,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 5,000  
Fair Value, ending balance [14] 9,550  
Investment, Identifier [Axis]: ACACIA BUYERCO V LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0 $ 0 [23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 0  
Fair Value, ending balance [14] $ 0  
Investment, Identifier [Axis]: ACCELERATION PARTNERS, LLC, Class A Common Units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,019 [17],[19],[20] 1,019 [18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] $ 0  
Fair Value, ending balance [14],[19],[20] 0  
Investment, Identifier [Axis]: ACCELERATION PARTNERS, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 19,749 [24] $ 19,550 [25]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[25] 19,550  
Fair Value, ending balance [14],[24] $ 19,749  
Investment, Identifier [Axis]: ACCELERATION PARTNERS, LLC, Preferred Units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,019 [17],[19],[20] 1,019 [18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] $ 1,063  
Fair Value, ending balance [14],[19],[20] $ 1,281  
Investment, Identifier [Axis]: ACCELERATION, LLC, Common Units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,611.22 [17],[19],[20] 1,611.22 [18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] $ 0  
Fair Value, ending balance [14],[19],[20] 0  
Investment, Identifier [Axis]: ACCELERATION, LLC, First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments   $ 8,917
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 8,917  
Investment, Identifier [Axis]: ACCELERATION, LLC, First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments   8,917
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 8,917  
Investment, Identifier [Axis]: ACCELERATION, LLC, First Lien - Term Loan C    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments   $ 8,917
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] $ 8,917  
Investment, Identifier [Axis]: ACCELERATION, LLC, Preferred Units    
Schedule of Investments [Line Items]    
Shares (in shares) 13,451.22 [17],[19],[20] 13,451.22 [18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] $ 1,554  
Fair Value, ending balance [14],[19],[20] 1,363  
Investment, Identifier [Axis]: ACCELERATION, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [23]   $ 0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 0  
Investment, Identifier [Axis]: ACE GATHERING, INC., Second Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 3,953 [26] 4,793 [27]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[27] 4,793  
Fair Value, ending balance [14],[26] 3,953  
Investment, Identifier [Axis]: ADS TACTICAL, INC., First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments   $ 1,625
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] $ 1,625  
Investment, Identifier [Axis]: AIR CONDITIONING SPECIALIST, INC. Preferred Units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,006,045.85 [10],[17],[19],[20] 1,006,045.85 [3],[18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7],[21],[22] $ 3,319  
Fair Value, ending balance [10],[14],[19],[20] 2,941  
Investment, Identifier [Axis]: AIR CONDITIONING SPECIALIST, INC., Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [10],[28] 2,937  
Amount of Interest or Dividends Credited in Income 133  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 3,702  
Gross Reductions (765)  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (44)  
Fair Value, ending balance [10],[14],[28] 2,893  
Investment, Identifier [Axis]: AIR CONDITIONING SPECIALIST, INC., Delayed Draw Term Loan10    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [3],[23]   $ 0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7],[23] 0  
Investment, Identifier [Axis]: AIR CONDITIONING SPECIALIST, INC., First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 21,077 [10] 24,407 [3]
Amount of Interest or Dividends Credited in Income 2,924  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7] 24,407  
Gross Additions 8,238  
Gross Reductions (11,590)  
Amount of Realized Gain/(Loss) 84  
Amount of Unrealized Gain/(Loss) (378)  
Fair Value, ending balance [10],[14] $ 20,761  
Investment, Identifier [Axis]: AIR CONDITIONING SPECIALIST, INC., Preferred Units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,006,045.85  
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 3,319  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (378)  
Fair Value, ending balance 2,941  
Investment, Identifier [Axis]: AIR CONDITIONING SPECIALIST, INC., Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 695 [10],[28] $ 825 [3],[23]
Amount of Interest or Dividends Credited in Income 83  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7],[23] 825  
Gross Additions 695  
Gross Reductions (825)  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (10)  
Fair Value, ending balance [10],[14],[28] $ 685  
Investment, Identifier [Axis]: ALLIANCE SPORTS GROUP, L.P., Membership preferred interest    
Schedule of Investments [Line Items]    
Ownership percent 3.88% [17] 3.88% [18]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] $ 646  
Fair Value, ending balance [14] 2,840  
Investment, Identifier [Axis]: ALLIANCE SPORTS GROUP, L.P., Unsecured convertible Note    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 173 $ 173
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 173  
Fair Value, ending balance [14] $ 173  
Investment, Identifier [Axis]: AMERICAN NUTS OPERATIONS LLC, Class A Preferred Units    
Schedule of Investments [Line Items]    
Shares (in shares) [10],[17] 21,062.03  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [10],[14],[19] $ 1,843  
Investment, Identifier [Axis]: AMERICAN NUTS OPERATIONS LLC, Class C Common Units    
Schedule of Investments [Line Items]    
Shares (in shares) [10],[17],[19],[20] 28.16  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [10],[14],[19],[20] $ 0  
Investment, Identifier [Axis]: AMERICAN NUTS OPERATIONS LLC, First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 5,851 [10] 12,944 [29]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[29] 10,356  
Fair Value, ending balance [10],[14] 5,851  
Investment, Identifier [Axis]: AMERICAN NUTS OPERATIONS LLC, First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 5,851 [10] $ 12,106 [29]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[29] 7,276  
Fair Value, ending balance [10],[14] 4,973  
Investment, Identifier [Axis]: AMERICAN NUTS OPERATIONS LLC, Units of Class A common stock    
Schedule of Investments [Line Items]    
Shares (in shares) [18],[21],[22]   3,000,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] $ 0  
Investment, Identifier [Axis]: APPLE ROOFING ADMINISTRATIVE SERVICES, LLC (fka ROOF OPCO, LLC), Class A Units    
Schedule of Investments [Line Items]    
Shares (in shares) [17],[19],[20] 535,714.29  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[19],[20] $ 664  
Investment, Identifier [Axis]: APPLE ROOFING ADMINISTRATIVE SERVICES, LLC (fka ROOF OPCO, LLC), Class A-1 Units    
Schedule of Investments [Line Items]    
Shares (in shares) [17],[19],[20] 496,674.92  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[19],[20] $ 0  
Investment, Identifier [Axis]: APPLE ROOFING ADMINISTRATIVE SERVICES, LLC (fka ROOF OPCO, LLC), Class B Units    
Schedule of Investments [Line Items]    
Shares (in shares) [17],[19],[20] 250,000  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[19],[20] $ 0  
Investment, Identifier [Axis]: APPLE ROOFING ADMINISTRATIVE SERVICES, LLC (fka ROOF OPCO, LLC), First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 13,261  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] 11,802  
Investment, Identifier [Axis]: APPLE ROOFING ADMINISTRATIVE SERVICES, LLC (fka ROOF OPCO, LLC), First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 13,261  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] 11,802  
Investment, Identifier [Axis]: APPLE ROOFING ADMINISTRATIVE SERVICES, LLC (fka ROOF OPCO, LLC), Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [28] 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[28] $ 0  
Investment, Identifier [Axis]: ARBORWORKS, LLC, Class A Units    
Schedule of Investments [Line Items]    
Shares (in shares) 100 [10],[17],[19],[20] 100 [3],[18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7],[21],[22] $ 5  
Fair Value, ending balance [10],[14],[19],[20] $ 5  
Investment, Identifier [Axis]: ARBORWORKS, LLC, Class A-1 Common Units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,666.67 [10],[17] 1,666.67 [3],[18]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7] $ 0  
Fair Value, ending balance [10],[14] $ 0  
Investment, Identifier [Axis]: ARBORWORKS, LLC, Class A-1 Preferred Units    
Schedule of Investments [Line Items]    
Shares (in shares) 13,898.32 [10],[17] 13,898.32 [3],[18]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7] $ 3,170  
Fair Value, ending balance [10],[14] $ 3,032  
Investment, Identifier [Axis]: ARBORWORKS, LLC, Class B-1 Preferred Units    
Schedule of Investments [Line Items]    
Shares (in shares) 13,898.32 [10],[17] 13,898.32 [3],[18]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7] $ 0  
Fair Value, ending balance [10],[14] 0  
Investment, Identifier [Axis]: ARBORWORKS, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 3,515 [10] $ 3,123 [3]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7] 3,123  
Fair Value, ending balance [10],[14] 3,473  
Investment, Identifier [Axis]: ARBORWORKS, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 886 [10],[28] $ 1,569 [3],[23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7],[23] 1,569  
Fair Value, ending balance [10],[14],[28] $ 886  
Investment, Identifier [Axis]: ASC ORTHO MANAGEMENT COMPANY, LLC, Common Units    
Schedule of Investments [Line Items]    
Shares (in shares) 2,572 [17],[19],[20] 2,572 [18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] $ 619  
Fair Value, ending balance [14],[19],[20] 234  
Investment, Identifier [Axis]: ATS OPERATING, LLC, First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 9,250 $ 9,250
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 9,250  
Fair Value, ending balance [14] 9,250  
Investment, Identifier [Axis]: ATS OPERATING, LLC, First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 9,250 $ 9,250
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 9,250  
Fair Value, ending balance [14] $ 9,250  
Investment, Identifier [Axis]: ATS OPERATING, LLC, Preferred units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,000,000 [17],[19],[20] 1,000,000 [18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] $ 1,220  
Fair Value, ending balance [14],[19],[20] 1,220  
Investment, Identifier [Axis]: ATS OPERATING, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 1,250 [28] $ 500 [23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 500  
Fair Value, ending balance [14],[28] $ 1,250  
Investment, Identifier [Axis]: American Nuts Operations LLC, Class A Preferred Units    
Schedule of Investments [Line Items]    
Shares (in shares) 21,062.03  
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 1,843  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance $ 1,843  
Investment, Identifier [Axis]: American Nuts Operations LLC, Class C Common Units    
Schedule of Investments [Line Items]    
Shares (in shares) 28.16  
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance 0  
Investment, Identifier [Axis]: American Nuts Operations LLC, First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 5,851  
Amount of Interest or Dividends Credited in Income 8  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 5,851  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance 5,851  
Investment, Identifier [Axis]: American Nuts Operations LLC, First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 5,851  
Amount of Interest or Dividends Credited in Income 8  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 5,851  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (878)  
Fair Value, ending balance $ 4,973  
Investment, Identifier [Axis]: ArborWorks, LLC, Class A Units    
Schedule of Investments [Line Items]    
Shares (in shares) 100  
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 5  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance $ 5  
Investment, Identifier [Axis]: ArborWorks, LLC, Class A-1 Common Units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,666.67  
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance $ 0  
Investment, Identifier [Axis]: ArborWorks, LLC, Class A-1 Preferred Units    
Schedule of Investments [Line Items]    
Shares (in shares) 13,898.32  
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 3,170  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (138)  
Fair Value, ending balance $ 3,032  
Investment, Identifier [Axis]: ArborWorks, LLC, Class B-1 Preferred Units    
Schedule of Investments [Line Items]    
Shares (in shares) 13,898.32  
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance 0  
Investment, Identifier [Axis]: ArborWorks, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 3,515  
Amount of Interest or Dividends Credited in Income 388  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 3,123  
Gross Additions 392  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (42)  
Fair Value, ending balance 3,473  
Investment, Identifier [Axis]: ArborWorks, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 886  
Amount of Interest or Dividends Credited in Income 220  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 1,569  
Gross Additions 211  
Gross Reductions (894)  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance $ 886  
Investment, Identifier [Axis]: BINSWANGER HOLDING CORP., common stock    
Schedule of Investments [Line Items]    
Shares (in shares) [17] 900,000  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] $ 800  
Investment, Identifier [Axis]: BINSWANGER HOLDING CORP., shares of common stock    
Schedule of Investments [Line Items]    
Shares (in shares) [18]   900,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] $ 598  
Investment, Identifier [Axis]: BOND BRAND LOYALTY ULC, Class A common units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,000 [17],[19],[20],[30] 1,000 [18],[21],[22],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22],[31] $ 0  
Fair Value, ending balance [14],[19],[20],[30] 0  
Investment, Identifier [Axis]: BOND BRAND LOYALTY ULC, First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 8,865 [20],[30] $ 8,955 [22],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[22],[31] 8,785  
Fair Value, ending balance [14],[20],[30] 8,865  
Investment, Identifier [Axis]: BOND BRAND LOYALTY ULC, First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 8,865 [20],[30] $ 8,955 [22],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[22],[31] 8,776  
Fair Value, ending balance [14],[20],[30] $ 8,865  
Investment, Identifier [Axis]: BOND BRAND LOYALTY ULC, Preferred units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,000 [17],[19],[20],[30] 1,000 [18],[21],[22],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22],[31] $ 799  
Fair Value, ending balance [14],[19],[20],[30] 799  
Investment, Identifier [Axis]: BOND BRAND LOYALTY ULC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 800 [20],[28],[30] $ 0 [22],[23],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[22],[23],[31] 0  
Fair Value, ending balance [14],[20],[28],[30] 800  
Investment, Identifier [Axis]: BP LOENBRO HOLDINGS INC., Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0 [28] 0 [23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 0  
Fair Value, ending balance [14],[28] 0  
Investment, Identifier [Axis]: BP LOENBRO HOLDINGS INC., First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments   9,798
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 9,607  
Investment, Identifier [Axis]: BP LOENBRO HOLDINGS INC., First Lien 1    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 9,553  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] 9,553  
Investment, Identifier [Axis]: BP LOENBRO HOLDINGS INC., First Lien 2    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 2,188  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] 2,188  
Investment, Identifier [Axis]: BP LOENBRO HOLDINGS INC., Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 330 [28] $ 0 [23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 0  
Fair Value, ending balance [14],[28] $ 330  
Investment, Identifier [Axis]: BRANDNER DESIGN, LLC, Class A Units    
Schedule of Investments [Line Items]    
Shares (in shares) [12],[17],[19],[20] 27,000  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [12],[14],[19],[20] $ 0  
Investment, Identifier [Axis]: BRANDNER DESIGN, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [12] 8,750  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [12],[14] 7,437  
Investment, Identifier [Axis]: BRANDNER DESIGN, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [12],[28] 100  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [12],[14],[28] $ 85  
Investment, Identifier [Axis]: BROAD SKY NETWORKS LLC, Series A Preferred units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,131,579 [17],[19],[20] 1,131,579 [18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] $ 1,393  
Fair Value, ending balance [14],[19],[20] $ 1,704  
Investment, Identifier [Axis]: BROAD SKY NETWORKS LLC, Series C Preferred units    
Schedule of Investments [Line Items]    
Shares (in shares) 89,335 [17],[19],[20] 89,335 [18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] $ 159  
Fair Value, ending balance [14],[19],[20] $ 232  
Investment, Identifier [Axis]: BROAD SKY NETWORKS LLC, Series D Preferred units    
Schedule of Investments [Line Items]    
Shares (in shares) [17],[19],[20] 93,790  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[19],[20] $ 247  
Investment, Identifier [Axis]: BROAD SKY NETWORKS LLC, Unsecured Convertible Note    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [19],[20],[28] 65  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[19],[20],[28] 65  
Investment, Identifier [Axis]: BURNING GLASS INTERMEDIATE HOLDING COMPANY, INC., First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 2,093 $ 2,500
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 2,500  
Fair Value, ending balance [14] 2,093  
Investment, Identifier [Axis]: BURNING GLASS INTERMEDIATE HOLDING COMPANY, INC., Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0 [28] 0 [23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 0  
Fair Value, ending balance [14],[28] $ 0  
Investment, Identifier [Axis]: Brandner Design, LLC., Class A Units    
Schedule of Investments [Line Items]    
Shares (in shares) 27,000  
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 105  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (105)  
Fair Value, ending balance 0  
Investment, Identifier [Axis]: Brandner Design, LLC., First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 8,750  
Amount of Interest or Dividends Credited in Income 1,287  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 8,636  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (1,199)  
Fair Value, ending balance 7,437  
Investment, Identifier [Axis]: Brandner Design, LLC., Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 100  
Amount of Interest or Dividends Credited in Income 11  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 88  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (3)  
Fair Value, ending balance 85  
Investment, Identifier [Axis]: C&M CONVEYOR, INC., First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [26] 6,500  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[26] 6,500  
Investment, Identifier [Axis]: C&M CONVEYOR, INC., First Lien - Term Loan A15    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [27]   6,500
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[27] 6,500  
Investment, Identifier [Axis]: C&M CONVEYOR, INC., First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [26] 6,500  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[26] 6,500  
Investment, Identifier [Axis]: C&M CONVEYOR, INC., First Lien - Term Loan B15    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [27]   6,500
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[27] 6,500  
Investment, Identifier [Axis]: C&M CONVEYOR, INC., First Lien - Term Loan C    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [26] 7,810  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[26] 7,810  
Investment, Identifier [Axis]: C&M CONVEYOR, INC., First Lien - Term Loan D    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [26] 7,810  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[26] 7,810  
Investment, Identifier [Axis]: CADMIUM, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 7,994 7,505
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 7,505  
Fair Value, ending balance [14] 7,802  
Investment, Identifier [Axis]: CADMIUM, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 615 $ 615
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 615  
Fair Value, ending balance [14] $ 601  
Investment, Identifier [Axis]: CAMPANY ROOF MAINTENANCE, LLC, Class A Units    
Schedule of Investments [Line Items]    
Shares (in shares) [17],[19],[20] 2,951.56  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[19],[20] $ 441  
Investment, Identifier [Axis]: CAMPANY ROOF MAINTENANCE, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 15,353  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] 14,739  
Investment, Identifier [Axis]: CAMPANY ROOF MAINTENANCE, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [28] 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[28] $ 0  
Investment, Identifier [Axis]: CATBIRD NYC, LLC, Class A Units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,000,000  
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 26  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 1,781  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 24  
Fair Value, ending balance $ 1,805  
Investment, Identifier [Axis]: CATBIRD NYC, LLC, Class A units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,000,000 [10],[17],[19],[20],[32] 1,000,000 [3],[18],[21],[22],[33]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7],[21],[22],[33] $ 1,781  
Fair Value, ending balance [10],[14],[19],[20],[32] $ 1,805  
Investment, Identifier [Axis]: CATBIRD NYC, LLC, Class B Units    
Schedule of Investments [Line Items]    
Shares (in shares) 500,000  
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 13  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 757  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 40  
Fair Value, ending balance $ 797  
Investment, Identifier [Axis]: CATBIRD NYC, LLC, Class B units    
Schedule of Investments [Line Items]    
Shares (in shares) 500,000 [10],[17],[19],[20],[28],[32] 500,000 [3],[18],[21],[22],[23],[33]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7],[21],[22],[23],[33] $ 757  
Fair Value, ending balance [10],[14],[19],[20],[28],[32] 797  
Investment, Identifier [Axis]: CATBIRD NYC, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 14,700 [10] $ 15,100 [3]
Amount of Interest or Dividends Credited in Income 1,878  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7] 15,100  
Gross Additions 65  
Gross Reductions (400)  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (65)  
Fair Value, ending balance [10],[14] 14,700  
Investment, Identifier [Axis]: CATBIRD NYC, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0 [10],[28] $ 0 [3],[23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7],[23] 0  
Fair Value, ending balance [10],[14],[28] 0  
Investment, Identifier [Axis]: CATBIRD NYC, LLC. Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0  
Amount of Interest or Dividends Credited in Income 101  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 2,016  
Gross Reductions (2,000)  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (16)  
Fair Value, ending balance $ 0  
Investment, Identifier [Axis]: CAVALIER BUYER, INC., Class A-1 Units    
Schedule of Investments [Line Items]    
Shares (in shares) 871,972.67 [17],[19],[20] 690,324 [18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] $ 0  
Fair Value, ending balance [14],[19],[20] 0  
Investment, Identifier [Axis]: CAVALIER BUYER, INC., First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 10,500 $ 6,500
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 6,500  
Fair Value, ending balance [14] $ 10,500  
Investment, Identifier [Axis]: CAVALIER BUYER, INC., Preferred Units    
Schedule of Investments [Line Items]    
Shares (in shares) 871,972.67 [17],[19],[20] 690,324 [18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] $ 726  
Fair Value, ending balance [14],[19],[20] 1,017  
Investment, Identifier [Axis]: CAVALIER BUYER, INC., Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0 [28] $ 0 [23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 0  
Fair Value, ending balance [14],[28] $ 0  
Investment, Identifier [Axis]: CDC DENTAL MANAGEMENT CO., LLC, Class Y Preferred Units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,568.7 [17],[19],[20] 1,568.7 [18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] $ 1,000  
Fair Value, ending balance [14],[19],[20] 1,065  
Investment, Identifier [Axis]: CDC DENTAL MANAGEMENT CO., LLC, First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 5,500 $ 5,500
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 5,390  
Fair Value, ending balance [14] 5,390  
Investment, Identifier [Axis]: CDC DENTAL MANAGEMENT CO., LLC, First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 5,500 5,500
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 5,390  
Fair Value, ending balance [14] 5,390  
Investment, Identifier [Axis]: CDC DENTAL MANAGEMENT CO., LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 500 [28] 0 [23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 0  
Fair Value, ending balance [14],[28] 490  
Investment, Identifier [Axis]: CENTRAL MEDICAL SUPPLY LLC, Delayed Draw Capex Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 101 [10],[28] 101 [3],[23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7],[23] 101  
Fair Value, ending balance [10],[14],[28] 101  
Investment, Identifier [Axis]: CENTRAL MEDICAL SUPPLY LLC, Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 101  
Amount of Interest or Dividends Credited in Income 26  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 101  
Gross Additions 6  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (6)  
Fair Value, ending balance 101  
Investment, Identifier [Axis]: CENTRAL MEDICAL SUPPLY LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 18,540 [10] $ 7,540 [3]
Amount of Interest or Dividends Credited in Income 1,628  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7] 7,540  
Gross Additions 11,007  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (22)  
Fair Value, ending balance [10],[14] $ 18,525  
Investment, Identifier [Axis]: CENTRAL MEDICAL SUPPLY LLC, Preferred Units    
Schedule of Investments [Line Items]    
Shares (in shares) 2,620,670 [10],[17],[19],[20] 2,620,670 [3],[18],[21],[22]
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7],[21],[22] 1,360  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 1,803  
Fair Value, ending balance [10],[14],[19],[20] 3,163  
Investment, Identifier [Axis]: CENTRAL MEDICAL SUPPLY LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 1,450 [10],[28] $ 700 [3],[23]
Amount of Interest or Dividends Credited in Income 171  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7],[23] 700  
Gross Additions 752  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (2)  
Fair Value, ending balance [10],[14],[28] 1,450  
Investment, Identifier [Axis]: CITYVET, INC., Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [23]   0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 0  
Investment, Identifier [Axis]: CITYVET, INC., First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 35,000 15,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 15,000  
Fair Value, ending balance [14] 34,965  
Investment, Identifier [Axis]: COMMAND GROUP ACQUISITION, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 6,000 [10] $ 6,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 5,882  
Fair Value, ending balance [10],[14] $ 5,880  
Investment, Identifier [Axis]: COMMAND GROUP ACQUISITION, LLC, Preferred Units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,250,000 [10],[17],[19],[20] 1,250,000 [3],[18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7],[21],[22] $ 1,250  
Fair Value, ending balance [10],[14],[19],[20] 1,038  
Investment, Identifier [Axis]: COREL, INC., First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [22],[31]   $ 4,862
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[22],[31] 4,794  
Investment, Identifier [Axis]: CRAFTY APES, LLC, Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [10],[24],[28] 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [10],[14],[24],[28] 0  
Investment, Identifier [Axis]: CRAFTY APES, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 3,833 [10],[24] $ 16,644 [25]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[25] 15,778  
Fair Value, ending balance [10],[14],[24] $ 3,653  
Investment, Identifier [Axis]: CRAFTY APES, LLC6., Class A Units    
Schedule of Investments [Line Items]    
Shares (in shares) [10],[17] 1,519.07  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [10],[14] $ 5,037  
Investment, Identifier [Axis]: CUMBRIA CAPITAL MSO, LLC, Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [28] 1,050  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[28] 1,043  
Investment, Identifier [Axis]: CUMBRIA CAPITAL MSO, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 5,400  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] 5,362  
Investment, Identifier [Axis]: CUMBRIA CAPITAL MSO, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [28] 400  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[28] 397  
Investment, Identifier [Axis]: Command Group Acquisition, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 6,000  
Amount of Interest or Dividends Credited in Income 802  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 5,882  
Gross Additions 18  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (20)  
Fair Value, ending balance $ 5,880  
Investment, Identifier [Axis]: Command Group Acquisition, LLC, Preferred Units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,250,000  
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 1,250  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (212)  
Fair Value, ending balance $ 1,038  
Investment, Identifier [Axis]: Crafty Apes, LLC, Class A Common Units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,519.07  
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 4,730  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 307  
Fair Value, ending balance 5,037  
Investment, Identifier [Axis]: Crafty Apes, LLC, Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance 0  
Investment, Identifier [Axis]: Crafty Apes, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 3,833  
Amount of Interest or Dividends Credited in Income 174  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 3,673  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (20)  
Fair Value, ending balance $ 3,653  
Investment, Identifier [Axis]: DAMOTECH INC., Class A Common units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,127 [17],[19],[20],[30] 1,127 [18],[21],[22],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22],[31] $ 355  
Fair Value, ending balance [14],[19],[20],[30] 2,738  
Investment, Identifier [Axis]: DAMOTECH INC., Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 3,000 [20],[30] $ 3,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 3,000  
Fair Value, ending balance [14],[20],[30] 3,000  
Investment, Identifier [Axis]: DAMOTECH INC., First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 5,100 [20],[30] 5,100
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 4,998  
Fair Value, ending balance [14],[20],[30] 5,100  
Investment, Identifier [Axis]: DAMOTECH INC., First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 5,100 [20],[30] $ 5,100
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 4,998  
Fair Value, ending balance [14],[20],[30] $ 5,100  
Investment, Identifier [Axis]: DAMOTECH INC., Preferred units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,127 [17],[19],[20],[30] 1,127 [18],[21],[22],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22],[31] $ 1,228  
Fair Value, ending balance [14],[19],[20],[30] 1,376  
Investment, Identifier [Axis]: DAMOTECH INC., Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0 [20],[28],[30] $ 0 [23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 0  
Fair Value, ending balance [14],[20],[28],[30] $ 0  
Investment, Identifier [Axis]: DELPHI LENDER HOLDCO LLC, Common units    
Schedule of Investments [Line Items]    
Shares (in shares) 254 [17] 254 [18]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] $ 0  
Fair Value, ending balance [14] $ 0  
Investment, Identifier [Axis]: DRIVE LINE SERVICE OF PORTLAND, LLC, Class A Units    
Schedule of Investments [Line Items]    
Shares (in shares) [17],[19],[20] 1,000,000  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[19],[20] $ 1,000  
Investment, Identifier [Axis]: DRIVE LINE SERVICE OF PORTLAND, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 8,000  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] 7,919  
Investment, Identifier [Axis]: DRIVE LINE SERVICE OF PORTLAND, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [28] 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[28] $ 0  
Investment, Identifier [Axis]: DYNAMIC COMMUNITIES, LLC, Class A Preferred Units    
Schedule of Investments [Line Items]    
Shares (in shares) 250,000 [10],[17],[19],[20] 250,000 [3],[18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7],[21],[22] $ 317  
Fair Value, ending balance [10],[14],[19],[20] $ 317  
Investment, Identifier [Axis]: DYNAMIC COMMUNITIES, LLC, Class B Preferred Units    
Schedule of Investments [Line Items]    
Shares (in shares) 5,435,211.03 [10],[17],[19],[20] 5,435,211.03 [3],[18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7],[21],[22] $ 0  
Fair Value, ending balance [10],[14],[19],[20] $ 0  
Investment, Identifier [Axis]: DYNAMIC COMMUNITIES, LLC, Class C Preferred Units    
Schedule of Investments [Line Items]    
Shares (in shares) 255,984.22 [10],[17],[19],[20] 255,984.22 [3],[18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7],[21],[22] $ 0  
Fair Value, ending balance [10],[14],[19],[20] $ 0  
Investment, Identifier [Axis]: DYNAMIC COMMUNITIES, LLC, Common units    
Schedule of Investments [Line Items]    
Shares (in shares) 2,500,000 [10],[17],[19],[20] 2,500,000 [3],[18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7],[21],[22] $ 0  
Fair Value, ending balance [10],[14],[19],[20] 0  
Investment, Identifier [Axis]: DYNAMIC COMMUNITIES, LLC, First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [10] 4,766  
Amount of Interest or Dividends Credited in Income 511  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 4,249  
Gross Additions 520  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (3)  
Fair Value, ending balance [10],[14] 4,766  
Investment, Identifier [Axis]: DYNAMIC COMMUNITIES, LLC, First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [10] 4,985  
Amount of Interest or Dividends Credited in Income 618  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 4,359  
Gross Additions 626  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance [10],[14] 4,985  
Investment, Identifier [Axis]: DYNAMIC COMMUNITIES, LLC6, First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [3]   $ 4,250
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7] 4,249  
Investment, Identifier [Axis]: DYNAMIC COMMUNITIES, LLC6, First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [3]   4,359
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7] $ 4,359  
Investment, Identifier [Axis]: Dynamic Communities, LLC, Class A Preferred units    
Schedule of Investments [Line Items]    
Shares (in shares) 250,000  
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 317  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance $ 317  
Investment, Identifier [Axis]: Dynamic Communities, LLC, Class B Preferred units    
Schedule of Investments [Line Items]    
Shares (in shares) 5,435,211.03  
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance $ 0  
Investment, Identifier [Axis]: Dynamic Communities, LLC, Class C Preferred units    
Schedule of Investments [Line Items]    
Shares (in shares) 255,984.22  
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance $ 0  
Investment, Identifier [Axis]: Dynamic Communities, LLC, Common units    
Schedule of Investments [Line Items]    
Shares (in shares) 2,500,000  
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance 0  
Investment, Identifier [Axis]: EDGE AUTONOMY HOLDINGS, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 17,500  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] 17,500  
Investment, Identifier [Axis]: EDGE AUTONOMY HOLDINGS, LLC, First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 17,500 11,250
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 11,250  
Fair Value, ending balance [14] 17,500  
Investment, Identifier [Axis]: EDGE AUTONOMY HOLDINGS, LLC, First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 17,500 11,250
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 11,250  
Fair Value, ending balance [14] 17,500  
Investment, Identifier [Axis]: EDGE AUTONOMY HOLDINGS, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0 [28] 0 [23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 0  
Fair Value, ending balance [14],[28] 0  
Investment, Identifier [Axis]: EMERALD TECHNOLOGIES (U.S.) ACQUISITIONCO, INC., First Lien - Term B Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 3,404 3,496
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 3,216  
Fair Value, ending balance [14] 2,553  
Investment, Identifier [Axis]: EVEREST TRANSPORTATION SYSTEMS, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 6,159 $ 6,521
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 5,934  
Fair Value, ending balance [14] $ 4,312  
Investment, Identifier [Axis]: EXACT BORROWER, LLC, Common units    
Schedule of Investments [Line Items]    
Shares (in shares) 615.156 [17] 615.156 [18]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] $ 945  
Fair Value, ending balance [14] 945  
Investment, Identifier [Axis]: EXACT BORROWER, LLC, Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 3,608 [28] $ 2,068
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 2,068  
Fair Value, ending balance [14],[28] 3,568  
Investment, Identifier [Axis]: EXACT BORROWER, LLC, First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 6,800 7,777
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 7,777  
Fair Value, ending balance [14] 6,726  
Investment, Identifier [Axis]: EXACT BORROWER, LLC, First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 6,800 7,777
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 7,777  
Fair Value, ending balance [14] 6,726  
Investment, Identifier [Axis]: EXACT BORROWER, LLC, First Lien - Term Loan C    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 11,500  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] 11,374  
Investment, Identifier [Axis]: EXACT BORROWER, LLC, Promissory Note    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 385 385
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 385  
Fair Value, ending balance [14] 385  
Investment, Identifier [Axis]: EXACT BORROWER, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0 [28] $ 0 [23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 0  
Fair Value, ending balance [14],[28] $ 0  
Investment, Identifier [Axis]: FLIP ELECTRONICS, LLC, Common Units    
Schedule of Investments [Line Items]    
Shares (in shares) 2,446,170 [17],[19],[20] 2,446,170 [18],[21],[22],[33]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22],[33] $ 9,505  
Fair Value, ending balance [14],[19],[20] 1,761  
Investment, Identifier [Axis]: FMT SOLUTIONS, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 6,750  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] $ 6,682  
Investment, Identifier [Axis]: FOOD PHARMA SUBSIDIARY HOLDINGS, LLC, Class A Units    
Schedule of Investments [Line Items]    
Shares (in shares) 75,000 [17],[19],[20],[32] 75,000 [18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] $ 1,815  
Fair Value, ending balance [14],[19],[20],[32] 1,708  
Investment, Identifier [Axis]: FOOD PHARMA SUBSIDIARY HOLDINGS, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments   $ 7,030
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 7,030  
Investment, Identifier [Axis]: FOOD PHARMA SUBSIDIARY HOLDINGS, LLC, First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 14,197  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] 14,197  
Investment, Identifier [Axis]: FOOD PHARMA SUBSIDIARY HOLDINGS, LLC, First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 14,197  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] 14,197  
Investment, Identifier [Axis]: FOOD PHARMA SUBSIDIARY HOLDINGS, LLC, First Lien - Term Loan C    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 14,197  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] $ 14,197  
Investment, Identifier [Axis]: FS VECTOR LLC, Common units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,280.58 [17],[19],[20],[32] 1,000 [18],[21],[22],[33]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22],[33] $ 1,000  
Fair Value, ending balance [14],[19],[20],[32] 1,585  
Investment, Identifier [Axis]: FS VECTOR LLC, First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 15,000 $ 9,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 8,919  
Fair Value, ending balance [14] 15,000  
Investment, Identifier [Axis]: FS VECTOR LLC, First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 15,000 9,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 8,919  
Fair Value, ending balance [14] 15,000  
Investment, Identifier [Axis]: FS VECTOR LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0 [28] 0 [23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 0  
Fair Value, ending balance [14],[28] 0  
Investment, Identifier [Axis]: GAINS INTERMEDIATE, LLC, First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 7,099 7,125
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 7,125  
Fair Value, ending balance [14] 6,105  
Investment, Identifier [Axis]: GAINS INTERMEDIATE, LLC, First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 7,099 7,125
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 7,125  
Fair Value, ending balance [14] 6,105  
Investment, Identifier [Axis]: GAINS INTERMEDIATE, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0 $ 0 [23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 0  
Fair Value, ending balance [14] $ 0  
Investment, Identifier [Axis]: GPT INDUSTRIES, LLC, Class A Preferred Units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,000,000 [10],[17],[19],[20] 1,000,000 [3],[18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7],[21],[22] $ 2,064  
Fair Value, ending balance [10],[14],[19],[20] 2,747  
Investment, Identifier [Axis]: GPT INDUSTRIES, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 5,866 [10],[15] $ 6,004 [3],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7],[16] 6,004  
Fair Value, ending balance [10],[14],[15] 5,866  
Investment, Identifier [Axis]: GPT INDUSTRIES, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0 [10],[28] $ 0 [3],[23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7],[23] 0  
Fair Value, ending balance [10],[14],[28] $ 0  
Investment, Identifier [Axis]: GPT Industries, LLC Class A Preferred Units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,000,000  
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 2,064  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 683  
Fair Value, ending balance 2,747  
Investment, Identifier [Axis]: GPT Industries, LLC First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 5,866  
Amount of Interest or Dividends Credited in Income 772  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 6,004  
Gross Additions 21  
Gross Reductions (138)  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (21)  
Fair Value, ending balance 5,866  
Investment, Identifier [Axis]: GPT Industries, LLC Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0  
Amount of Interest or Dividends Credited in Income 27  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 11  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (11)  
Fair Value, ending balance $ 0  
Investment, Identifier [Axis]: GRAMMATECH, INC., Class A units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,000 [10],[17] 1,000 [3],[18]
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7] 0  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 336  
Fair Value, ending balance [10],[14] $ 336  
Investment, Identifier [Axis]: GRAMMATECH, INC., Class A-1 units    
Schedule of Investments [Line Items]    
Shares (in shares) 360.06 [10],[17] 360.06 [3],[18]
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7] 0  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 121  
Fair Value, ending balance [10],[14] 121  
Investment, Identifier [Axis]: GRAMMATECH, INC., First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 563 [10] $ 1,000 [3]
Amount of Interest or Dividends Credited in Income 135  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7] 1,000  
Gross Additions 2  
Gross Reductions (437)  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (2)  
Fair Value, ending balance [10],[14] 563  
Investment, Identifier [Axis]: GRAMMATECH, INC., Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0 [10],[28] $ 0 [3],[23]
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7],[23] 0  
Gross Additions (2)  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 2  
Fair Value, ending balance [10],[14],[28] 0  
Investment, Identifier [Axis]: GRAVITIQ LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [10],[28] 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [10],[14],[28] 0  
Investment, Identifier [Axis]: GRAVITIQ LLC, Warrants (Expiration - January 17, 2032)    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [10],[14],[19],[20] 1,597  
Investment, Identifier [Axis]: GRAVITIQ LLC6, First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [10] 15,000  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [10],[14] 14,082  
Investment, Identifier [Axis]: GRAVITIQ LLC6, First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [10] 15,000  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [10],[14] $ 14,082  
Investment, Identifier [Axis]: GUARDIAN FLEET SERVICES, INC., Class A Units    
Schedule of Investments [Line Items]    
Shares (in shares) 2,000,000 [17],[19],[20] 1,500,000 [18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] $ 1,584  
Fair Value, ending balance [14],[19],[20] 2,466  
Investment, Identifier [Axis]: GUARDIAN FLEET SERVICES, INC., First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 10,792 $ 9,575
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 9,096  
Fair Value, ending balance [14] 10,630  
Investment, Identifier [Axis]: GUARDIAN FLEET SERVICES, INC., Warrants (Expiration - December 18, 2034)    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[19],[20] 26  
Investment, Identifier [Axis]: GUARDIAN FLEET SERVICES, INC., Warrants (Expiration - February 10, 2033)    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] 42  
Fair Value, ending balance [14],[19],[20] 122  
Investment, Identifier [Axis]: GUARDIAN FLEET SERVICES, INC., Warrants (Expiration - January 24, 2034)    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] 24  
Fair Value, ending balance [14],[19],[20] 68  
Investment, Identifier [Axis]: GUARDIAN FLEET SERVICES, INC., Warrants (Expiration - November 30, 2033)    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] 24  
Fair Value, ending balance [14],[19],[20] 68  
Investment, Identifier [Axis]: GULF PACIFIC ACQUISITION, LLC, Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [23]   300
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 288  
Investment, Identifier [Axis]: GULF PACIFIC ACQUISITION, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 3,866 3,606
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 3,461  
Fair Value, ending balance [14] 3,286  
Investment, Identifier [Axis]: GULF PACIFIC ACQUISITION, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 707 [28] 454 [23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 436  
Fair Value, ending balance [14],[28] 601  
Investment, Identifier [Axis]: Gravitiq LLC, First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 15,000  
Amount of Interest or Dividends Credited in Income 349  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 14,082  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance 14,082  
Investment, Identifier [Axis]: Gravitiq LLC, First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 15,000  
Amount of Interest or Dividends Credited in Income 409  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 14,082  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance 14,082  
Investment, Identifier [Axis]: Gravitiq LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0  
Amount of Interest or Dividends Credited in Income 7  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions (48)  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 48  
Fair Value, ending balance 0  
Investment, Identifier [Axis]: Gravitiq LLC, Warrants    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 1,597  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance 1,597  
Investment, Identifier [Axis]: HEAT TRAK, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments   11,500
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 11,270  
Investment, Identifier [Axis]: HEAT TRAK, LLC, First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 11,500  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] 9,775  
Investment, Identifier [Axis]: HEAT TRAK, LLC, First Lien - Term Loan E    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 2,500  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] 2,500  
Investment, Identifier [Axis]: HEAT TRAK, LLC, Warrants    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] 742  
Fair Value, ending balance [14],[19],[20] 0  
Investment, Identifier [Axis]: HH-INSPIRE ACQUISITION, INC., First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 8,259 $ 7,975
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 7,242  
Fair Value, ending balance [14] $ 7,408  
Investment, Identifier [Axis]: HH-INSPIRE ACQUISITION, INC., Preferred units    
Schedule of Investments [Line Items]    
Shares (in shares) 146,065.51 [17],[19],[20] 108,211.4 [18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] $ 323  
Fair Value, ending balance [14],[19],[20] 124  
Investment, Identifier [Axis]: HH-INSPIRE ACQUISITION, INC., Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 768 $ 719 [23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 653  
Fair Value, ending balance [14] 689  
Investment, Identifier [Axis]: HYBRID APPAREL, LLC, Second Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 15,999 [26] $ 15,929 [27]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[27] 15,929  
Fair Value, ending balance [14],[26] $ 15,871  
Investment, Identifier [Axis]: IGNITE VISIBILITY LLC, Class A Common Units    
Schedule of Investments [Line Items]    
Shares (in shares) 833 [17],[19],[20] 833 [18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] $ 167  
Fair Value, ending balance [14],[19],[20] 0  
Investment, Identifier [Axis]: IGNITE VISIBILITY LLC, Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [23]   $ 0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 0  
Investment, Identifier [Axis]: IGNITE VISIBILITY LLC, First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 5,000 5,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 4,930  
Fair Value, ending balance [14] 4,900  
Investment, Identifier [Axis]: IGNITE VISIBILITY LLC, First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 5,000 $ 5,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 4,930  
Fair Value, ending balance [14] $ 4,900  
Investment, Identifier [Axis]: IGNITE VISIBILITY LLC, Preferred Units    
Schedule of Investments [Line Items]    
Shares (in shares) 833 [17],[19],[20] 833 [18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] $ 833  
Fair Value, ending balance [14],[19],[20] 620  
Investment, Identifier [Axis]: IGNITE VISIBILITY LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 500 [28] $ 0 [23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 0  
Fair Value, ending balance [14],[28] 490  
Investment, Identifier [Axis]: INFOGAIN CORPORATION, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 3,692  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] 3,692  
Investment, Identifier [Axis]: INFOLINKS MEDIA BUYCO, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments   $ 8,171
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] $ 8,171  
Investment, Identifier [Axis]: INFOLINKS MEDIA BUYCO, LLC, LP interest    
Schedule of Investments [Line Items]    
Ownership percent 1.67% [17],[19],[20],[28],[32] 1.67% [18],[21],[22],[23],[33]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22],[23],[33] $ 1,121  
Fair Value, ending balance [14],[19],[20],[28],[32] $ 960  
Investment, Identifier [Axis]: INSTITUTES OF HEALTH, LLC, Class A Preferred Units    
Schedule of Investments [Line Items]    
Shares (in shares) 100,000 [17],[19],[20] 100,000 [18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] $ 1,000  
Fair Value, ending balance [14],[19],[20] 1,163  
Investment, Identifier [Axis]: INSTITUTES OF HEALTH, LLC, First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 7,500 $ 7,500
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 7,297  
Fair Value, ending balance [14] 7,447  
Investment, Identifier [Axis]: INSTITUTES OF HEALTH, LLC, First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 7,500 7,500
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 7,297  
Fair Value, ending balance [14] 7,440  
Investment, Identifier [Axis]: INSTITUTES OF HEALTH, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0 [28] 0 [23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 0  
Fair Value, ending balance [14],[28] 0  
Investment, Identifier [Axis]: INSURE HOMES CORPORATION, Tranche B Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 24,500  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] 24,500  
Investment, Identifier [Axis]: INTERMEDIA HOLDINGS, INC., First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments   5,231
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 5,178  
Investment, Identifier [Axis]: INW MANUFACTURING, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 1,980 2,100
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 1,681  
Fair Value, ending balance [14] 1,819  
Investment, Identifier [Axis]: ISAGENIX INTERNATIONAL, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments   724
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 634  
Investment, Identifier [Axis]: ISI ENTERPRISES, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 3,816 5,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 5,000  
Fair Value, ending balance [14] 3,816  
Investment, Identifier [Axis]: ISI ENTERPRISES, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0 [28] $ 0 [23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 0  
Fair Value, ending balance [14],[28] $ 0  
Investment, Identifier [Axis]: ISI ENTERPRISES, LLC, Series A Preferred units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,000,000 [17] 1,000,000 [18]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] $ 1,296  
Fair Value, ending balance [14] $ 1,296  
Investment, Identifier [Axis]: ISI ENTERPRISES, LLC, Series A-1 Preferred units    
Schedule of Investments [Line Items]    
Shares (in shares) 166,667 [17] 166,667 [18]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] $ 706  
Fair Value, ending balance [14] 706  
Investment, Identifier [Axis]: ISLAND PUMP AND TANK, LLC, First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 12,218 $ 12,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 12,000  
Fair Value, ending balance [14] 12,218  
Investment, Identifier [Axis]: ISLAND PUMP AND TANK, LLC, First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 12,218 12,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 12,000  
Fair Value, ending balance [14] 12,218  
Investment, Identifier [Axis]: ISLAND PUMP AND TANK, LLC, First Lien - Term Loan C    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 12,218 $ 12,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 12,000  
Fair Value, ending balance [14] $ 12,218  
Investment, Identifier [Axis]: ISLAND PUMP AND TANK, LLC, Preferred units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,326,389.3 [17],[19],[20] 1,204,099.26 [18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] $ 2,325  
Fair Value, ending balance [14],[19],[20] 2,702  
Investment, Identifier [Axis]: ISLAND PUMP AND TANK, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0 [28] $ 0 [23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 0  
Fair Value, ending balance [14],[28] $ 0  
Investment, Identifier [Axis]: ITA HOLDINGS GROUP, LLC, Class A Membership Interest    
Schedule of Investments [Line Items]    
Ownership percent 9.25% [10],[17],[19],[20],[32] 9.25% [3],[18],[21],[22],[33]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7],[21],[22],[33] $ 2,374  
Fair Value, ending balance [10],[14],[19],[20],[32] $ 8,776  
Investment, Identifier [Axis]: ITA HOLDINGS GROUP, LLC, Class A membership interest    
Schedule of Investments [Line Items]    
Ownership percent 9.25%  
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 383  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 2,374  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 6,402  
Fair Value, ending balance 8,776  
Investment, Identifier [Axis]: ITA HOLDINGS GROUP, LLC, Delayed Draw Term Loan - A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 1,484 [10] $ 1,058 [3],[23]
Amount of Interest or Dividends Credited in Income 191  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7],[23] 1,058  
Gross Additions 426  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance [10],[14] 1,484  
Investment, Identifier [Axis]: ITA HOLDINGS GROUP, LLC, Delayed Draw Term Loan - B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 1,484 [10] 1,058 [3],[23]
Amount of Interest or Dividends Credited in Income 218  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7],[23] 1,058  
Gross Additions 426  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance [10],[14] 1,484  
Investment, Identifier [Axis]: ITA HOLDINGS GROUP, LLC, First Lien - Term B Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 13,356 [10] 13,038 [3]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7] 13,038  
Fair Value, ending balance [10],[14] 13,356  
Investment, Identifier [Axis]: ITA HOLDINGS GROUP, LLC, First Lien - Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 13,356 [10] 13,038 [3]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7] 13,038  
Fair Value, ending balance [10],[14] 13,356  
Investment, Identifier [Axis]: ITA HOLDINGS GROUP, LLC, First Lien - Term Loan - 2    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 13,356  
Amount of Interest or Dividends Credited in Income 2,342  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 13,038  
Gross Additions 776  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (458)  
Fair Value, ending balance 13,356  
Investment, Identifier [Axis]: ITA HOLDINGS GROUP, LLC, First Lien - Term Loan B - 2    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 13,356  
Amount of Interest or Dividends Credited in Income 2,601  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 13,038  
Gross Additions 766  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (448)  
Fair Value, ending balance 13,356  
Investment, Identifier [Axis]: ITA HOLDINGS GROUP, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 3,525 [10] 2,468 [3],[23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7],[23] 2,468  
Fair Value, ending balance [10],[14] 3,525  
Investment, Identifier [Axis]: ITA HOLDINGS GROUP, LLC, Revolving loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 3,525  
Amount of Interest or Dividends Credited in Income 573  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 2,468  
Gross Additions 1,767  
Gross Reductions (705)  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (5)  
Fair Value, ending balance 3,525  
Investment, Identifier [Axis]: ITA HOLDINGS GROUP, LLC, Warrants (Expiration - June 21, 2033)    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7],[21],[22] 3,869  
Fair Value, ending balance [10],[14],[19],[20] 11,369  
Investment, Identifier [Axis]: ITA HOLDINGS GROUP, LLC, Warrants (Expiration - March 29, 2029)    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7],[21],[22] 4,005  
Fair Value, ending balance [10],[14],[19],[20] 9,755  
Investment, Identifier [Axis]: ITA HOLDINGS GROUP, LLC, Warrants - 1    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 4,005  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 5,750  
Fair Value, ending balance 9,755  
Investment, Identifier [Axis]: ITA HOLDINGS GROUP, LLC, Warrants - 2    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 3,869  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 7,500  
Fair Value, ending balance 11,369  
Investment, Identifier [Axis]: IVUEIT, LLC, Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [10],[28] 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [10],[14],[28] 0  
Investment, Identifier [Axis]: IVUEIT, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [10] 10,000  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [10],[14] $ 9,902  
Investment, Identifier [Axis]: IVUEIT, LLC, Preferred Units    
Schedule of Investments [Line Items]    
Shares (in shares) [10],[17],[19],[20] 2,000  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [10],[14],[19],[20],[32] $ 2,000  
Investment, Identifier [Axis]: IVUEIT, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [10],[28] 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [10],[14],[28] 0  
Investment, Identifier [Axis]: JACKSON HEWITT TAX SERVICE, INC., First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 10,000 10,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 9,850  
Fair Value, ending balance [14] 9,990  
Investment, Identifier [Axis]: KMS, INC., First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [27]   17,856
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[27] 15,892  
Investment, Identifier [Axis]: KMS, LLC, Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 2,328  
Amount of Interest or Dividends Credited in Income 45  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 2,261  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance 2,261  
Investment, Identifier [Axis]: KMS, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [12],[26] 2,407  
Amount of Interest or Dividends Credited in Income 41  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 2,407  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance [12],[14],[26] $ 2,407  
Investment, Identifier [Axis]: KMS, LLC, Series A Preferred Units    
Schedule of Investments [Line Items]    
Shares (in shares) [12],[17] 19,395.96  
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 6,305  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance [12],[14] 6,305  
Investment, Identifier [Axis]: KMS, LLC7, Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [26],[28] 2,328  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[26],[28] 2,261  
Investment, Identifier [Axis]: LAB LOGISTICS, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 7,876 7,958
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 7,959  
Fair Value, ending balance [14] 7,798  
Investment, Identifier [Axis]: LAB LOGISTICS, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 279  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] 276  
Investment, Identifier [Axis]: LASH OPCO, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 17,618 16,733
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 16,399  
Fair Value, ending balance [14] 16,737  
Investment, Identifier [Axis]: LASH OPCO, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 866 824
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 808  
Fair Value, ending balance [14] $ 823  
Investment, Identifier [Axis]: LEHR UPFITTERS, LLC, Class A Units    
Schedule of Investments [Line Items]    
Shares (in shares) [17],[19],[20] 7,250  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[19],[20] $ 1,043  
Investment, Identifier [Axis]: LEHR UPFITTERS, LLC, Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [28] 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[28] 0  
Investment, Identifier [Axis]: LEHR UPFITTERS, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 26,557  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] 26,348  
Investment, Identifier [Axis]: LEHR UPFITTERS, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [28] 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[28] 0  
Investment, Identifier [Axis]: LGM PHARMA, LLC, Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 4,226 4,269
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 4,269  
Fair Value, ending balance [14] 4,226  
Investment, Identifier [Axis]: LGM PHARMA, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 4,938 4,988
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 4,987  
Fair Value, ending balance [14] 4,938  
Investment, Identifier [Axis]: LGM PHARMA, LLC, First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 4,823 4,872
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 4,872  
Fair Value, ending balance [14] 4,770  
Investment, Identifier [Axis]: LGM PHARMA, LLC, First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 4,823 4,872
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 4,872  
Fair Value, ending balance [14] 4,876  
Investment, Identifier [Axis]: LGM PHARMA, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0 [28] $ 0 [23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 0  
Fair Value, ending balance [14],[28] $ 0  
Investment, Identifier [Axis]: LGM PHARMA, LLC, Units of Class A common stock    
Schedule of Investments [Line Items]    
Shares (in shares) 161,825.84 [17],[19],[20],[32] 142,278.89 [18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] $ 5,258  
Fair Value, ending balance [14],[19],[20],[32] 6,067  
Investment, Identifier [Axis]: LGM PHARMA, LLC, Unsecured convertible note    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [21],[22]   $ 144
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] $ 136  
Investment, Identifier [Axis]: LIFT BRANDS, INC., Common units    
Schedule of Investments [Line Items]    
Shares (in shares) [17] 1,051  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] $ 263  
Investment, Identifier [Axis]: LIFT BRANDS, INC., Tranche A Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 2,426 2,452
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 2,403  
Fair Value, ending balance [14] 2,422  
Investment, Identifier [Axis]: LIFT BRANDS, INC., Tranche B Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 727 661
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 601  
Fair Value, ending balance [14] 693  
Investment, Identifier [Axis]: LIFT BRANDS, INC., Tranche C Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 565 565
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 514  
Fair Value, ending balance [14] 538  
Investment, Identifier [Axis]: LIGHTBOX INTERMEDIATE, L.P., First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments   $ 5,444
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] $ 5,281  
Investment, Identifier [Axis]: LIGHTING RETROFIT INTERNATIONAL, LLC (DBA ENVOCORE), Common units    
Schedule of Investments [Line Items]    
Shares (in shares) 203,124.9999  
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance 0  
Investment, Identifier [Axis]: LIGHTING RETROFIT INTERNATIONAL, LLC (DBA ENVOCORE), First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 5,039  
Amount of Interest or Dividends Credited in Income 386  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 4,984  
Gross Additions 0  
Gross Reductions (52)  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (90)  
Fair Value, ending balance 4,842  
Investment, Identifier [Axis]: LIGHTING RETROFIT INTERNATIONAL, LLC (DBA ENVOCORE), Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 729  
Amount of Interest or Dividends Credited in Income 63  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 714  
Gross Additions 469  
Gross Reductions (469)  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (13)  
Fair Value, ending balance 701  
Investment, Identifier [Axis]: LIGHTING RETROFIT INTERNATIONAL, LLC (DBA ENVOCORE), Second Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 5,208  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 4,917  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (4,917)  
Fair Value, ending balance $ 0  
Investment, Identifier [Axis]: LIGHTING RETROFIT INTERNATIONAL, LLC (DBA ENVOCORE), Series A Preferred units    
Schedule of Investments [Line Items]    
Shares (in shares) 208,333.3333  
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance $ 0  
Investment, Identifier [Axis]: LIGHTING RETROFIT INTERNATIONAL, LLC, Common units    
Schedule of Investments [Line Items]    
Shares (in shares) 203,124.9999 [10],[17],[19],[20] 203,124.9999 [3],[18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7],[21],[22] $ 0  
Fair Value, ending balance [10],[14],[19],[20] 0  
Investment, Identifier [Axis]: LIGHTING RETROFIT INTERNATIONAL, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 5,039 [10] $ 5,091 [3]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7] 4,984  
Fair Value, ending balance [10],[14] 4,842  
Investment, Identifier [Axis]: LIGHTING RETROFIT INTERNATIONAL, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 729 [10],[28] 729 [3],[23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7],[23] 714  
Fair Value, ending balance [10],[14],[28] 701  
Investment, Identifier [Axis]: LIGHTING RETROFIT INTERNATIONAL, LLC, Second Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 5,208 [10],[34] $ 5,208 [3],[29]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7],[29] 4,917  
Fair Value, ending balance [10],[14],[34] $ 0  
Investment, Identifier [Axis]: LIGHTING RETROFIT INTERNATIONAL, LLC, Series A Preferred units    
Schedule of Investments [Line Items]    
Shares (in shares) 208,333.3333 [10],[17],[19],[20] 208,333.3333 [3],[18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7],[21],[22] $ 0  
Fair Value, ending balance [10],[14],[19],[20] 0  
Investment, Identifier [Axis]: LIGHTNING INTERMEDIATE II, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 20,903 $ 22,135
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 21,029  
Fair Value, ending balance [14] $ 20,235  
Investment, Identifier [Axis]: LIGHTNING INTERMEDIATE II, LLC, LLC interest    
Schedule of Investments [Line Items]    
Ownership percent 0.42% [17],[19],[20] 0.42% [18],[21],[22],[33]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22],[33] $ 263  
Fair Value, ending balance [14],[19],[20] 263  
Investment, Identifier [Axis]: LIGHTNING INTERMEDIATE II, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0 [28] $ 0 [23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 0  
Fair Value, ending balance [14],[28] $ 0  
Investment, Identifier [Axis]: LKC TECHNOLOGIES, INC., Class A units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,000,000 [17],[19],[20],[32] 1,000,000 [18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] $ 1,460  
Fair Value, ending balance [14],[19],[20],[32] 2,097  
Investment, Identifier [Axis]: LKC TECHNOLOGIES, INC., First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 17,000 $ 5,917
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 5,917  
Fair Value, ending balance [14] 17,000  
Investment, Identifier [Axis]: LKC TECHNOLOGIES, INC., Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0 [28] 0 [23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 0  
Fair Value, ending balance [14],[28] 0  
Investment, Identifier [Axis]: LLFLEX, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 10,103 [26] 10,795 [27]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[27] 9,176  
Fair Value, ending balance [14],[26] 7,577  
Investment, Identifier [Axis]: LOGIX HOLDINGS COMPANY, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 3,555 3,555
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 2,755  
Fair Value, ending balance [14] 2,829  
Investment, Identifier [Axis]: MAKO STEEL LP, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments   7,727
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 7,727  
Investment, Identifier [Axis]: MAKO STEEL LP, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [23]   $ 0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] $ 0  
Investment, Identifier [Axis]: MAMMOTH BORROWCO, INC., Class A Preferred Units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,141,913.27 [17],[19],[20] 1,000,000 [18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] $ 1,000  
Fair Value, ending balance [14],[19],[20] 692  
Investment, Identifier [Axis]: MAMMOTH BORROWCO, INC., Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 2,853 $ 1,550 [23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 1,511  
Fair Value, ending balance [14] 2,751  
Investment, Identifier [Axis]: MAMMOTH BORROWCO, INC., First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 10,643 10,750
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 10,481  
Fair Value, ending balance [14] 10,259  
Investment, Identifier [Axis]: MAMMOTH BORROWCO, INC., First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 10,643 10,750
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 10,481  
Fair Value, ending balance [14] 10,259  
Investment, Identifier [Axis]: MAMMOTH BORROWCO, INC., Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 3,550 [28] 1,800 [23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 1,755  
Fair Value, ending balance [14],[28] 3,422  
Investment, Identifier [Axis]: MERCURY ACQUISITION 2021, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 12,957 12,957
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 11,338  
Fair Value, ending balance [14] 11,338  
Investment, Identifier [Axis]: MERCURY ACQUISITION 2021, LLC, Second Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 2,927 $ 2,927
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 2,195  
Fair Value, ending balance [14] $ 2,195  
Investment, Identifier [Axis]: MERCURY ACQUISITION 2021, LLC, Series A Units    
Schedule of Investments [Line Items]    
Shares (in shares) 12,059,033 [17],[19],[20] 12,059,033 [18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] $ 0  
Fair Value, ending balance [14],[19],[20] 233  
Investment, Identifier [Axis]: MICROBE FORMULAS LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments   $ 10,016
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 10,016  
Investment, Identifier [Axis]: MICROBE FORMULAS LLC, First Lien 1    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 8,958  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] 8,958  
Investment, Identifier [Axis]: MICROBE FORMULAS LLC, First Lien 2    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 5,018  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] 5,018  
Investment, Identifier [Axis]: MICROBE FORMULAS LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0 [28] $ 0 [23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 0  
Fair Value, ending balance [14],[28] 0  
Investment, Identifier [Axis]: MID-FLORIDA ENDODONTICS MANAGEMENT COMPANY, LLC, Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [28] 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[28] 0  
Investment, Identifier [Axis]: MID-FLORIDA ENDODONTICS MANAGEMENT COMPANY, LLC, First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 8,050  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] 7,970  
Investment, Identifier [Axis]: MID-FLORIDA ENDODONTICS MANAGEMENT COMPANY, LLC, First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 8,050  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] 7,970  
Investment, Identifier [Axis]: MID-FLORIDA ENDODONTICS MANAGEMENT COMPANY, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [28] 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[28] $ 0  
Investment, Identifier [Axis]: MUENSTER MILLING COMPANY, LLC, Class A units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,000,000 [17],[19],[20] 1,000,000 [18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] $ 633  
Fair Value, ending balance [14],[19],[20] $ 147  
Investment, Identifier [Axis]: MUENSTER MILLING COMPANY, LLC, Class A-1 Units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,130,387.32 [17],[19],[20] 1,130,387.32 [18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] $ 316  
Fair Value, ending balance [14],[19],[20] $ 73  
Investment, Identifier [Axis]: MUENSTER MILLING COMPANY, LLC, Class A-2 Units    
Schedule of Investments [Line Items]    
Shares (in shares) [17],[19],[20] 130,444  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[19],[20] $ 19  
Investment, Identifier [Axis]: MUENSTER MILLING COMPANY, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 22,574 $ 21,800
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 21,364  
Fair Value, ending balance [14] 21,446  
Investment, Identifier [Axis]: MUENSTER MILLING COMPANY, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0 $ 0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 0  
Fair Value, ending balance [14] 0  
Investment, Identifier [Axis]: MUSIKER DISCOVERY PROGRAMS, INC., Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [28] 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[28] 0  
Investment, Identifier [Axis]: MUSIKER DISCOVERY PROGRAMS, INC., First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 11,500  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] 11,397  
Investment, Identifier [Axis]: MUSIKER DISCOVERY PROGRAMS, INC., First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 11,500  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] 11,385  
Investment, Identifier [Axis]: MUSIKER DISCOVERY PROGRAMS, INC., Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [28] 3,000  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[28] $ 2,952  
Investment, Identifier [Axis]: NATIONAL CREDIT CARE, LLC, Class A-3 Preferred units    
Schedule of Investments [Line Items]    
Shares (in shares) 191,049.33 [12],[17],[19],[20] 191,049.33 [18],[21],[22],[33]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22],[33] $ 1,362  
Fair Value, ending balance [12],[14],[19],[20] 2,007  
Investment, Identifier [Axis]: NATIONAL CREDIT CARE, LLC, First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 11,875 [12] $ 11,875
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 11,875  
Fair Value, ending balance [12],[14] 11,282  
Investment, Identifier [Axis]: NATIONAL CREDIT CARE, LLC, First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 11,875 [12] 11,875
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 5,106  
Fair Value, ending balance [12],[14] 9,500  
Investment, Identifier [Axis]: NATIONAL CREDIT CARE, LLC, Warrants    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [12],[14],[19],[20] 92  
Investment, Identifier [Axis]: NEUROPSYCHIATRIC HOSPITALS, LLC, First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 7,390 7,424
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 7,395  
Fair Value, ending balance [14] 7,390  
Investment, Identifier [Axis]: NEUROPSYCHIATRIC HOSPITALS, LLC, First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 7,390 7,424
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 7,424  
Fair Value, ending balance [14] 7,390  
Investment, Identifier [Axis]: NEUROPSYCHIATRIC HOSPITALS, LLC, First Lien - Term Loan C    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 5,124 5,148
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 5,148  
Fair Value, ending balance [14] 5,124  
Investment, Identifier [Axis]: NEUROPSYCHIATRIC HOSPITALS, LLC, First Lien - Term Loan D    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 12,914 12,973
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 12,973  
Fair Value, ending balance [14] 12,914  
Investment, Identifier [Axis]: NEUROPSYCHIATRIC HOSPITALS, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 3,000 [28] 5,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 5,000  
Fair Value, ending balance [14],[28] 3,000  
Investment, Identifier [Axis]: NEW SKINNY MIXES, LLC, Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [23]   0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 0  
Investment, Identifier [Axis]: NEW SKINNY MIXES, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 13,000 13,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 13,000  
Fair Value, ending balance [14] 13,000  
Investment, Identifier [Axis]: NEW SKINNY MIXES, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 1,000 [28] 500 [23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 500  
Fair Value, ending balance [14],[28] 1,000  
Investment, Identifier [Axis]: NINJATRADER, INC., First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 33,830 $ 34,698
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 34,698  
Fair Value, ending balance [14] $ 33,830  
Investment, Identifier [Axis]: NINJATRADER, INC., Preferred Units    
Schedule of Investments [Line Items]    
Shares (in shares) 2,000,000 [17],[19],[20],[32] 2,000,000 [18],[21],[22],[33]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22],[33] $ 17,771  
Fair Value, ending balance [14],[19],[20],[32] 32,079  
Investment, Identifier [Axis]: NINJATRADER, INC., Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0 [28] $ 0 [23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 0  
Fair Value, ending balance [14],[28] $ 0  
Investment, Identifier [Axis]: National Credit Care, LLC, Class A-3 Preferred Units    
Schedule of Investments [Line Items]    
Shares (in shares) 191,049.33  
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 539  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 1,468  
Fair Value, ending balance 2,007  
Investment, Identifier [Axis]: National Credit Care, LLC, First lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 11,875  
Amount of Interest or Dividends Credited in Income 210  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 11,790  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (508)  
Fair Value, ending balance 11,282  
Investment, Identifier [Axis]: National Credit Care, LLC, First lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 11,875  
Amount of Interest or Dividends Credited in Income 227  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 9,414  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 86  
Fair Value, ending balance 9,500  
Investment, Identifier [Axis]: National Credit Care, LLC, Warrants    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 92  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance 92  
Investment, Identifier [Axis]: ONE GROUP, LLC, Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0 [28] 0 [23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 0  
Fair Value, ending balance [14],[28] 0  
Investment, Identifier [Axis]: ONE GROUP, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 9,656 9,972
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 9,876  
Fair Value, ending balance [14] 9,656  
Investment, Identifier [Axis]: OPCO BORROWER, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments   8,661
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 8,661  
Investment, Identifier [Axis]: OPCO BORROWER, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [23]   0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 0  
Investment, Identifier [Axis]: OPCO BORROWER, LLC, Second Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments   $ 3,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 3,000  
Investment, Identifier [Axis]: OPCO BORROWER, LLC, Warrants (Expiration - August 19, 2029)    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] $ 1,006  
Investment, Identifier [Axis]: OPCO BORROWER, LLC, shares of common stock    
Schedule of Investments [Line Items]    
Shares (in shares) [17],[32] 1,111.11  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[32] $ 1,006  
Investment, Identifier [Axis]: OUTERBOX, LLC, Affiliated, Class A common units    
Schedule of Investments [Line Items]    
Shares (in shares) 11,008.6744  
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 581  
Gross Additions 0  
Gross Reductions (581)  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance 0  
Investment, Identifier [Axis]: OUTERBOX, LLC, Affiliated, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0  
Amount of Interest or Dividends Credited in Income 350  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 14,522  
Gross Additions 8  
Gross Reductions (14,625)  
Amount of Realized Gain/(Loss) 149  
Amount of Unrealized Gain/(Loss) (54)  
Fair Value, ending balance 0  
Investment, Identifier [Axis]: OUTERBOX, LLC, Affiliated, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0  
Amount of Interest or Dividends Credited in Income 2  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 1  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 18  
Amount of Unrealized Gain/(Loss) (19)  
Fair Value, ending balance $ 0  
Investment, Identifier [Axis]: OUTERBOX, LLC, Class A common units    
Schedule of Investments [Line Items]    
Shares (in shares) 11,008.6744 [17],[19],[20] 6,308.2584 [3],[18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7],[21],[22] $ 581  
Fair Value, ending balance [14],[19],[20] 1,464  
Investment, Identifier [Axis]: OUTERBOX, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments   $ 14,625
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 14,522  
Investment, Identifier [Axis]: OUTERBOX, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [23]   0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 0  
Investment, Identifier [Axis]: PIPELINE TECHNIQUE LTD, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 2,389 [20],[28],[30] 1,056 [22],[23],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[22],[23],[31] 1,056  
Fair Value, ending balance [14],[20],[28],[30] 2,222  
Investment, Identifier [Axis]: PIPELINE TECHNIQUE LTD., First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 5,972 [20],[30] 7,583 [22],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[22],[31] 7,583  
Fair Value, ending balance [14],[20],[30] 5,554  
Investment, Identifier [Axis]: POOL SERVICE HOLDINGS, LLC, Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [3],[23]   600
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7],[23] 588  
Investment, Identifier [Axis]: POOL SERVICE HOLDINGS, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [3]   5,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7] 4,900  
Investment, Identifier [Axis]: POOL SERVICE HOLDINGS, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [3]   $ 1,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7] $ 980  
Investment, Identifier [Axis]: POOL SERVICE PARTNERS, INC., Common units    
Schedule of Investments [Line Items]    
Shares (in shares) 10,667 [10],[17],[19],[20] 10,000 [3],[18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7],[21],[22] $ 1,384  
Fair Value, ending balance [10],[14],[19],[20] 610  
Investment, Identifier [Axis]: POOL SERVICE PARTNERS, INC., Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [10],[28] 5,400  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [10],[14],[28] 5,146  
Investment, Identifier [Axis]: POOL SERVICE PARTNERS, INC., First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [10] 5,000  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [10],[14] 4,765  
Investment, Identifier [Axis]: POOL SERVICE PARTNERS, INC., Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [10],[28] 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [10],[14],[28] $ 0  
Investment, Identifier [Axis]: Pool Service Partners, Inc., Common Units    
Schedule of Investments [Line Items]    
Shares (in shares) 10,667  
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 1,384  
Gross Additions 150  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (924)  
Fair Value, ending balance 610  
Investment, Identifier [Axis]: Pool Service Partners, Inc., Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 5,400  
Amount of Interest or Dividends Credited in Income 411  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 588  
Gross Additions 5,782  
Gross Reductions (1,000)  
Amount of Realized Gain/(Loss) 22  
Amount of Unrealized Gain/(Loss) (246)  
Fair Value, ending balance 5,146  
Investment, Identifier [Axis]: Pool Service Partners, Inc., First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 5,000  
Amount of Interest or Dividends Credited in Income 603  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 4,900  
Gross Additions 16  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (151)  
Fair Value, ending balance 4,765  
Investment, Identifier [Axis]: Pool Service Partners, Inc., Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0  
Amount of Interest or Dividends Credited in Income 52  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 980  
Gross Additions 1,995  
Gross Reductions (3,000)  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 25  
Fair Value, ending balance $ 0  
Investment, Identifier [Axis]: RED DOG OPERATIONS HOLDING COMPANY LLC, Class A Units    
Schedule of Investments [Line Items]    
Shares (in shares) [10],[19],[20] 1,000  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [10],[14],[19],[20] $ 1,000  
Investment, Identifier [Axis]: RED DOG OPERATIONS HOLDING COMPANY LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [10] 7,500  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [10],[14] 7,425  
Investment, Identifier [Axis]: RED DOG OPERATIONS HOLDING COMPANY LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [10],[28] 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [10],[14],[28] 0  
Investment, Identifier [Axis]: RESEARCH NOW GROUP, INC., First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments   $ 4,649
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 2,804  
Investment, Identifier [Axis]: RESEARCH NOW GROUP, INC., Second Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [29]   10,500
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[29] 2,940  
Investment, Identifier [Axis]: RESEARCH NOW GROUP, LLC, Warrants    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] 0  
Investment, Identifier [Axis]: RETAIL SERVICES WIS CORPORATION, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments   2,676
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 2,651  
Investment, Identifier [Axis]: REVO BRANDS, INC., First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 10,776 11,167
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 10,947  
Fair Value, ending balance [14] 10,593  
Investment, Identifier [Axis]: REVO BRANDS, INC., First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 10,776 11,167
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 10,947  
Fair Value, ending balance [14] 10,593  
Investment, Identifier [Axis]: REVO BRANDS, INC., First Lien - Term Loan C    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 10,776 11,167
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 10,947  
Fair Value, ending balance [14] 10,581  
Investment, Identifier [Axis]: REVO BRANDS, INC., Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 2,700 [28] $ 0 [23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 0  
Fair Value, ending balance [14],[28] 2,697  
Investment, Identifier [Axis]: ROOF OPCO, LLC, Class A Units    
Schedule of Investments [Line Items]    
Shares (in shares) [18],[21],[22]   535,714.29
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] 775  
Investment, Identifier [Axis]: ROOF OPCO, LLC, Class B Units    
Schedule of Investments [Line Items]    
Shares (in shares) [18],[21],[22]   250,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] 262  
Investment, Identifier [Axis]: ROOF OPCO, LLC, First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments   $ 13,261
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 12,638  
Investment, Identifier [Axis]: ROOF OPCO, LLC, First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments   13,261
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 12,638  
Investment, Identifier [Axis]: ROOF OPCO, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [23]   $ 0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] $ 0  
Investment, Identifier [Axis]: ROSELAND MANAGEMENT, LLC, Class A Units    
Schedule of Investments [Line Items]    
Shares (in shares) 16,084 [10],[17] 16,084 [3],[18]
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7] 747  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 194  
Fair Value, ending balance [10],[14] $ 941  
Investment, Identifier [Axis]: ROSELAND MANAGEMENT, LLC, Class A-1 Units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,100 [10],[17] 1,100 [3],[18]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7] $ 183  
Fair Value, ending balance [10],[14] $ 196  
Investment, Identifier [Axis]: ROSELAND MANAGEMENT, LLC, Class A-2 Units    
Schedule of Investments [Line Items]    
Shares (in shares) 3,364 [10],[17] 3,364 [3],[18]
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7] 762  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 40  
Fair Value, ending balance [10],[14] 802  
Investment, Identifier [Axis]: ROSELAND MANAGEMENT, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 14,598 [10] $ 14,906 [3]
Amount of Interest or Dividends Credited in Income 1,826  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7] 14,906  
Gross Additions 18  
Gross Reductions (308)  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (18)  
Fair Value, ending balance [10],[14] 14,598  
Investment, Identifier [Axis]: ROSELAND MANAGEMENT, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0 [10],[28] 0 [3],[23]
Amount of Interest or Dividends Credited in Income 7  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7],[23] 0  
Gross Additions (3)  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 3  
Fair Value, ending balance [10],[14],[28] 0  
Investment, Identifier [Axis]: RTIC SUBSIDIARY HOLDINGS, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments   5,684
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 5,639  
Investment, Identifier [Axis]: RTIC SUBSIDIARY HOLDINGS, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [23]   1,068
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] $ 1,060  
Investment, Identifier [Axis]: Red Dog Operations Holding Company LLC, Class A Preferred units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,000  
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 1,000  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance 1,000  
Investment, Identifier [Axis]: Red Dog Operations Holding Company LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 7,500  
Amount of Interest or Dividends Credited in Income 315  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 7,429  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (4)  
Fair Value, ending balance 7,425  
Investment, Identifier [Axis]: Red Dog Operations Holding Company LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0  
Amount of Interest or Dividends Credited in Income 5  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions (18)  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 18  
Fair Value, ending balance $ 0  
Investment, Identifier [Axis]: Roseland Management, LLC, Class A-1 Units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,100  
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 183  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 13  
Fair Value, ending balance $ 196  
Investment, Identifier [Axis]: Roseland Management, LLC, Class A-2 units    
Schedule of Investments [Line Items]    
Shares (in shares) 3,364  
Investment, Identifier [Axis]: SCRIP INC., First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments $ 17,882 $ 16,583
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 16,416  
Fair Value, ending balance [14] $ 16,451  
Investment, Identifier [Axis]: SCRIP INC., Shares of common stock    
Schedule of Investments [Line Items]    
Shares (in shares) 100 [17] 100 [18]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] $ 751  
Fair Value, ending balance [14] $ 439  
Investment, Identifier [Axis]: SERVERLIFT, LLC, Class A units    
Schedule of Investments [Line Items]    
Shares (in shares) [17],[19],[20] 500,000  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[19],[20] $ 500  
Investment, Identifier [Axis]: SERVERLIFT, LLC, First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 16,000  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] 15,856  
Investment, Identifier [Axis]: SERVERLIFT, LLC, First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 16,000  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] 15,856  
Investment, Identifier [Axis]: SERVERLIFT, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [28] 1,000  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[28] $ 991  
Investment, Identifier [Axis]: SHEARWATER RESEARCH, INC., Class A Common Units    
Schedule of Investments [Line Items]    
Shares (in shares) 40,000 [17],[19],[20],[30] 40,000 [18],[21],[22],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22],[31] $ 787  
Fair Value, ending balance [14],[19],[20],[30] $ 1,349  
Investment, Identifier [Axis]: SHEARWATER RESEARCH, INC., Class A Preferred Units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,200,000 [17],[19],[20],[30] 1,200,000 [18],[21],[22],[31],[33]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22],[31],[33] $ 644  
Fair Value, ending balance [14],[19],[20],[30] 675  
Investment, Identifier [Axis]: SOCIALSEO, LLC, First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 10,125  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] 10,027  
Investment, Identifier [Axis]: SOCIALSEO, LLC, First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 10,125  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] 10,026  
Investment, Identifier [Axis]: SOCIALSEO, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [28] 800  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[28] $ 771  
Investment, Identifier [Axis]: SONOBI, INC., Class A Common Units    
Schedule of Investments [Line Items]    
Shares (in shares) 500,000 [10],[17],[19],[20] 500,000 [3],[18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7],[21],[22] $ 1,958  
Fair Value, ending balance [10],[14],[19],[20] 0  
Investment, Identifier [Axis]: SOUTH COAST TERMINALS, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments   $ 14,413
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 14,269  
Investment, Identifier [Axis]: SOUTH COAST TERMINALS, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [23]   $ 0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] $ 0  
Investment, Identifier [Axis]: SPECTRUM OF HOPE, LLC, Common units    
Schedule of Investments [Line Items]    
Shares (in shares) 402,350 [17],[19],[20] 1,074,786 [18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] $ 661  
Fair Value, ending balance [14],[19],[20] 0  
Investment, Identifier [Axis]: SPECTRUM OF HOPE, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments   $ 22,188
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 20,833  
Investment, Identifier [Axis]: SPECTRUM OF HOPE, LLC, First Lien - Superpriority Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [12] 2,284  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [12],[14] 2,284  
Investment, Identifier [Axis]: SPECTRUM OF HOPE, LLC, First Lien - Tranche A Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [12],[34] 11,120  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [12],[14],[34] 9,318  
Investment, Identifier [Axis]: SPECTRUM OF HOPE, LLC, First Lien - Tranche B Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [12],[34] 11,120  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [12],[14],[34] $ 3,114  
Investment, Identifier [Axis]: SPOTLIGHT AR, LLC, Common Units    
Schedule of Investments [Line Items]    
Shares (in shares) 750 [17],[19],[20],[32] 750 [18],[21],[22],[33]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22],[33] $ 1,164  
Fair Value, ending balance [14],[19],[20],[32] 1,366  
Investment, Identifier [Axis]: SPOTLIGHT AR, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 4,312 $ 6,637
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 6,637  
Fair Value, ending balance [14] 4,312  
Investment, Identifier [Axis]: SPOTLIGHT AR, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0 [28] $ 0 [23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 0  
Fair Value, ending balance [14],[28] $ 0  
Investment, Identifier [Axis]: STATINMED, LLC, Class A Preferred Units    
Schedule of Investments [Line Items]    
Shares (in shares) 4,718.62 [10],[17] 4,718.62 [3],[18]
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7] 0  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance [10],[14] $ 0  
Investment, Identifier [Axis]: STATINMED, LLC, Class B Preferred Units    
Schedule of Investments [Line Items]    
Shares (in shares) 39,097.96 [10],[17] 39,097.96 [3],[18]
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7] 0  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance [10],[14] 0  
Investment, Identifier [Axis]: STATINMED, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 7,560 [10],[34] $ 7,560 [29]
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[29] 4,914  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (4,914)  
Fair Value, ending balance [10],[14],[34] 0  
Investment, Identifier [Axis]: STELLANT MIDCO, LLC, First Lien 1    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 1,776 1,794
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 1,794  
Fair Value, ending balance [14] 1,767  
Investment, Identifier [Axis]: STELLANT MIDCO, LLC, First Lien 2    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 788 796
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 796  
Fair Value, ending balance [14] 784  
Investment, Identifier [Axis]: STUDENT RESOURCE CENTER LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 9,644 [10],[34] $ 9,644 [3],[29]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7],[29] 3,376  
Fair Value, ending balance [10],[14],[34] $ 3,761  
Investment, Identifier [Axis]: STUDENT RESOURCE CENTER LLC, Preferred Units 1    
Schedule of Investments [Line Items]    
Shares (in shares) 10,502,487.46 [10],[17] 10,502,487.46 [3],[18]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7] $ 0  
Fair Value, ending balance [10],[14] $ 0  
Investment, Identifier [Axis]: STUDENT RESOURCE CENTER LLC, Preferred Units 2    
Schedule of Investments [Line Items]    
Shares (in shares) 2,000,000 [10],[17],[19],[20] 2,000,000 [3],[18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [3],[7],[21],[22] $ 0  
Fair Value, ending balance [10],[14],[19],[20] $ 0  
Investment, Identifier [Axis]: STUDENT RESOURCE CENTER LLC, Senior Preferred Units    
Schedule of Investments [Line Items]    
Shares (in shares) [10],[17] 355,555.56  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [10],[14] $ 0  
Investment, Identifier [Axis]: SUPERIOR HEALTH PARENT LLC, Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [28] 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[28] 0  
Investment, Identifier [Axis]: SUPERIOR HEALTH PARENT LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 17,500  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] 17,378  
Investment, Identifier [Axis]: SUPERIOR HEALTH PARENT LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [28] 1,000  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[28] $ 978  
Investment, Identifier [Axis]: SUREKAP, LLC, Common units    
Schedule of Investments [Line Items]    
Shares (in shares) [17],[19],[20] 430,144.53  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[19],[20] $ 1,157  
Investment, Identifier [Axis]: SUREKAP, LLC, Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [28] 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[28] 0  
Investment, Identifier [Axis]: SUREKAP, LLC, First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 19,089  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] 19,089  
Investment, Identifier [Axis]: SUREKAP, LLC, First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 19,089  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] 19,089  
Investment, Identifier [Axis]: SWENSONS DRIVE-IN RESTAURANTS, LLC, First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 8,000 $ 8,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 7,840  
Fair Value, ending balance [14] 8,000  
Investment, Identifier [Axis]: SWENSONS DRIVE-IN RESTAURANTS, LLC, First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 8,000 8,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 7,840  
Fair Value, ending balance [14] 8,000  
Investment, Identifier [Axis]: SWENSONS DRIVE-IN RESTAURANTS, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0 [28] 0 [23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 0  
Fair Value, ending balance [14],[28] 0  
Investment, Identifier [Axis]: SYSTEC CORPORATION, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments   8,440
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 8,372  
Investment, Identifier [Axis]: SYSTEC CORPORATION, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments   $ 2,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] $ 1,984  
Investment, Identifier [Axis]: Sonobi, Inc., Class A Common units    
Schedule of Investments [Line Items]    
Shares (in shares) 500,000  
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 1,958  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (1,958)  
Fair Value, ending balance $ 0  
Investment, Identifier [Axis]: Spectrum of Hope, LLC, Common Units    
Schedule of Investments [Line Items]    
Shares (in shares) 402,350  
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance 0  
Investment, Identifier [Axis]: Spectrum of Hope, LLC, First Lien - Superpriority Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 2,284  
Amount of Interest or Dividends Credited in Income 49  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 2,284  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance 2,284  
Investment, Identifier [Axis]: Spectrum of Hope, LLC, First Lien - Tranche A Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 11,120  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 2,239  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 7,079  
Fair Value, ending balance 9,318  
Investment, Identifier [Axis]: Spectrum of Hope, LLC, First Lien - Tranche B Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 11,120  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 11,120  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (8,006)  
Fair Value, ending balance 3,114  
Investment, Identifier [Axis]: Student Resource Center LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 9,644  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 3,376  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 385  
Fair Value, ending balance $ 3,761  
Investment, Identifier [Axis]: Student Resource Center LLC, Preferred units 1    
Schedule of Investments [Line Items]    
Shares (in shares) 355,555.56  
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 356  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (356)  
Fair Value, ending balance $ 0  
Investment, Identifier [Axis]: Student Resource Center LLC, Preferred units 2    
Schedule of Investments [Line Items]    
Shares (in shares) 10,502,487.46  
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance $ 0  
Investment, Identifier [Axis]: Student Resource Center LLC, Preferred units 3    
Schedule of Investments [Line Items]    
Shares (in shares) 2,000,000  
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance $ 0  
Investment, Identifier [Axis]: TALKNY MANAGEMENT HOLDINGS, LLC, Class A-1 Preferred Units    
Schedule of Investments [Line Items]    
Shares (in shares) [10],[17],[19],[20] 1,500,000  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [10],[14],[19],[20] $ 1,082  
Investment, Identifier [Axis]: TALKNY MANAGEMENT HOLDINGS, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [10] 7,500  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [10],[14] 7,312  
Investment, Identifier [Axis]: THE GOBEL GROUP, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 4,000  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] 3,960  
Investment, Identifier [Axis]: THE GOBEL GROUP, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [28] 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[28] $ 0  
Investment, Identifier [Axis]: THE GOBEL GROUP, LLC, Class A Common Units    
Schedule of Investments [Line Items]    
Shares (in shares) [17],[19],[20] 500,000  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[19],[20] $ 0  
Investment, Identifier [Axis]: THE GOBEL GROUP, LLC, Class A-1 Preferred Units    
Schedule of Investments [Line Items]    
Shares (in shares) [17],[19],[20] 500,000  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[19],[20] $ 500  
Investment, Identifier [Axis]: THE PRODUCTO GROUP, LLC, Class A units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,988,468.7 [17],[19],[20],[32] 1,500,000 [18],[21],[22],[33]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22],[33] $ 12,054  
Fair Value, ending balance [14],[19],[20],[32] 8,841  
Investment, Identifier [Axis]: THE PRODUCTO GROUP, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments   $ 17,447
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] $ 17,447  
Investment, Identifier [Axis]: TMT BHC BUYER, INC., Class A Units    
Schedule of Investments [Line Items]    
Shares (in shares) 500,000 [17],[19],[20] 500,000 [18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] $ 500  
Fair Value, ending balance [14],[19],[20] 682  
Investment, Identifier [Axis]: TMT BHC BUYER, INC., Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0 [28] $ 0 [23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 0  
Fair Value, ending balance [14],[28] 0  
Investment, Identifier [Axis]: TMT BHC BUYER, INC., First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 10,000 10,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 9,802  
Fair Value, ending balance [14] 10,000  
Investment, Identifier [Axis]: TMT BHC BUYER, INC., Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0 [28] $ 0 [23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 0  
Fair Value, ending balance [14],[28] $ 0  
Investment, Identifier [Axis]: TRAFERA, LLC (FKA TRINITY 3, LLC), Class A units    
Schedule of Investments [Line Items]    
Shares (in shares) 896.43 [17],[19],[20] 896.43 [18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] $ 583  
Fair Value, ending balance [14],[19],[20] 539  
Investment, Identifier [Axis]: TRAFERA, LLC (FKA TRINITY 3, LLC), First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 5,575 [26] $ 5,675 [27]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[27] 5,590  
Fair Value, ending balance [14],[26] 5,525  
Investment, Identifier [Axis]: TRAFERA, LLC (FKA TRINITY 3, LLC), Unsecured convertible note    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [21],[22]   75
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] 75  
Investment, Identifier [Axis]: TRU FRAGRANCE & BEAUTY LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 6,000  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] 5,943  
Investment, Identifier [Axis]: TRU FRAGRANCE & BEAUTY LLC, First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 15,099 15,251
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 14,948  
Fair Value, ending balance [14] 15,099  
Investment, Identifier [Axis]: TRU FRAGRANCE & BEAUTY LLC, First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 15,099 $ 15,251
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 14,948  
Fair Value, ending balance [14] $ 15,099  
Investment, Identifier [Axis]: TRU FRAGRANCE & BEAUTY LLC, Preferred Units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,000,000 [17],[19],[20] 1,000,000 [18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] $ 1,000  
Fair Value, ending balance [14],[19],[20] 1,276  
Investment, Identifier [Axis]: TRU FRAGRANCE & BEAUTY LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0 [28] $ 100 [23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 98  
Fair Value, ending balance [14],[28] $ 0  
Investment, Identifier [Axis]: TalkNY Management Holdings, LLC, Class A-1 Preferred Units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,500,000  
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 1,500  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (418)  
Fair Value, ending balance 1,082  
Investment, Identifier [Axis]: TalkNY Management Holdings, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 7,500  
Amount of Interest or Dividends Credited in Income 735  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 7,401  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) (89)  
Fair Value, ending balance 7,312  
Investment, Identifier [Axis]: U.S. TELEPACIFIC CORP., First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 2,547 2,409
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 923  
Fair Value, ending balance [14] 1,019  
Investment, Identifier [Axis]: U.S. TELEPACIFIC CORP., Third Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 230 $ 230
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 54  
Fair Value, ending balance [14] 58  
Investment, Identifier [Axis]: UPS INTERMEDIATE, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [26] 9,925  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[26] $ 9,528  
Investment, Identifier [Axis]: US COURTSCRIPT HOLDINGS, INC., Class D-3 LP Units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,000,000 [17],[19],[20] 1,000,000 [18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] $ 1,346  
Fair Value, ending balance [14],[19],[20] $ 1,592  
Investment, Identifier [Axis]: US COURTSCRIPT HOLDINGS, INC., Class D-4 LP Units    
Schedule of Investments [Line Items]    
Shares (in shares) 211,862.61 [17],[19],[20] 211,862.61 [18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] $ 273  
Fair Value, ending balance [14],[19],[20] $ 319  
Investment, Identifier [Axis]: US COURTSCRIPT HOLDINGS, INC., Class D-5 LP Units    
Schedule of Investments [Line Items]    
Shares (in shares) 211,465.87 [17],[19],[20] 211,465.87 [18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] $ 269  
Fair Value, ending balance [14],[19],[20] 311  
Investment, Identifier [Axis]: US COURTSCRIPT HOLDINGS, INC., First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 14,800 $ 14,800
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 14,800  
Fair Value, ending balance [14] 14,800  
Investment, Identifier [Axis]: USA DEBUSK, LLC, First Lien 1    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments   11,381
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 11,381  
Investment, Identifier [Axis]: USA DEBUSK, LLC, First Lien 2    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments   1,660
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 1,660  
Investment, Identifier [Axis]: VEREGY CONSOLIDATED, INC., First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 1,532 1,546
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 1,515  
Fair Value, ending balance [14] 1,532  
Investment, Identifier [Axis]: VERSICARE MANAGEMENT LLC, First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments   12,200
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 12,200  
Investment, Identifier [Axis]: VERSICARE MANAGEMENT LLC, First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments   12,200
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 12,200  
Investment, Identifier [Axis]: VERSICARE MANAGEMENT LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [23]   0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 0  
Investment, Identifier [Axis]: VIDA CAPITAL, INC., First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments   $ 2,362
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 2,065  
Investment, Identifier [Axis]: VISTAR MEDIA INC., Shares of Series A preferred stock    
Schedule of Investments [Line Items]    
Shares (in shares) [18],[21],[22]   171,617
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] $ 8,485  
Investment, Identifier [Axis]: VP MOVE PURCHASER, INC., Class A Preferred Units    
Schedule of Investments [Line Items]    
Shares (in shares) [17],[19],[20] 900,000  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[19],[20] $ 900  
Investment, Identifier [Axis]: VP MOVE PURCHASER, INC., First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 15,000  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] 14,890  
Investment, Identifier [Axis]: VP MOVE PURCHASER, INC., First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 15,000  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] 14,890  
Investment, Identifier [Axis]: VP MOVE PURCHASER, INC., Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [28] 300  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14],[28] $ 269  
Investment, Identifier [Axis]: VTX HOLDINGS, INC., Series A Preferred units    
Schedule of Investments [Line Items]    
Shares (in shares) 1,597,707 [17],[19],[20] 1,597,707 [18],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] $ 3,466  
Fair Value, ending balance [14],[19],[20] 2,192  
Investment, Identifier [Axis]: WALL STREET PREP, INC., Class A-1 Preferred Shares    
Schedule of Investments [Line Items]    
Shares (in shares) [18],[21],[22]   1,000,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[21],[22] 2,012  
Investment, Identifier [Axis]: WALL STREET PREP, INC., First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments   $ 9,239
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 9,239  
Investment, Identifier [Axis]: WALL STREET PREP, INC., Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments [23]   0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 0  
Investment, Identifier [Axis]: WELL-FOAM, INC., First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 11,761 12,541
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 12,541  
Fair Value, ending balance [14] 11,761  
Investment, Identifier [Axis]: WELL-FOAM, INC., Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0 [28] 0 [23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 0  
Fair Value, ending balance [14],[28] 0  
Investment, Identifier [Axis]: WINTER SERVICES OPERATIONS, LLC, Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 3,748 4,133
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 4,009  
Fair Value, ending balance [14] 3,659  
Investment, Identifier [Axis]: WINTER SERVICES OPERATIONS, LLC, First Lien - Term Loan A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 14,479 15,967
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 15,488  
Fair Value, ending balance [14] 14,132  
Investment, Identifier [Axis]: WINTER SERVICES OPERATIONS, LLC, First Lien - Term Loan B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 14,479 15,967
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 15,488  
Fair Value, ending balance [14] 14,132  
Investment, Identifier [Axis]: WINTER SERVICES OPERATIONS, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 5,333 [28] 3,556 [23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 3,449  
Fair Value, ending balance [14],[28] 5,205  
Investment, Identifier [Axis]: YS GARMENTS, LLC, First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments   2,953
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 2,401  
Investment, Identifier [Axis]: ZENFOLIO INC., First Lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 19,695 19,744
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 19,547  
Fair Value, ending balance [14] 19,695  
Investment, Identifier [Axis]: ZENFOLIO INC., Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 1,500 [28] 2,000 [23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7],[23] 1,980  
Fair Value, ending balance [14],[28] 1,500  
Investment, Identifier [Axis]: ZIPS CAR WASH, LLC, Delayed Draw Term Loan - A    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 14,072 [34] 15,719
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 15,656  
Fair Value, ending balance [14],[34] 11,539  
Investment, Identifier [Axis]: ZIPS CAR WASH, LLC, Delayed Draw Term Loan - B    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 3,527 [34] $ 3,940
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance [7] 3,924  
Fair Value, ending balance [14],[34] 2,892  
Investment, Identifier [Axis]: ZIPS CAR WASH, LLC, First Lien - DIP    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 878  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] 878  
Investment, Identifier [Axis]: ZIPS CAR WASH, LLC, Roll Up Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 1,536  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, ending balance [14] 1,536  
Investment, Identifier [Axis]: iVueit, LLC, Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0  
Amount of Interest or Dividends Credited in Income 8  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 0  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance 0  
Investment, Identifier [Axis]: iVueit, LLC, First lien    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 10,000  
Amount of Interest or Dividends Credited in Income 165  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 9,902  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance $ 9,902  
Investment, Identifier [Axis]: iVueit, LLC, Preferred Units    
Schedule of Investments [Line Items]    
Shares (in shares) 2,000  
Principal Amount - Debt Investments $ 0  
Amount of Interest or Dividends Credited in Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions 2,000  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 0  
Fair Value, ending balance 2,000  
Investment, Identifier [Axis]: iVueit, LLC, Revolving Loan    
Schedule of Investments [Line Items]    
Principal Amount - Debt Investments 0  
Amount of Interest or Dividends Credited in Income 1  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Fair Value, beginning balance 0  
Gross Additions (10)  
Gross Reductions 0  
Amount of Realized Gain/(Loss) 0  
Amount of Unrealized Gain/(Loss) 10  
Fair Value, ending balance $ 0  
[1] Equity ownership may be held in shares or units of a company that is either wholly owned by the portfolio company or under common control by the same parent company to the portfolio company.
[2] Unless otherwise noted, all portfolio company headquarters are based in the United States.
[3] Affiliate investments are generally defined by the 1940 Act as investments in which between 5% and 25% of the voting securities are owned and the investments are not classified as control investments. At March 31, 2024, the Company held $190.2 million of affiliate investments, which represented approximately 12.9% of the Company’s investment assets. The fair value of these investments as a percent of net assets is 25.2%.
[4] All debt investments are income-producing, unless otherwise noted. Equity investments are non-income producing, unless otherwise noted.
[5] Control investments are generally defined by the 1940 Act as investments in which the Company owns more than 25% of the voting securities or has greater than 50% representation on its board. At March 31, 2024, the Company did not hold any control investments.
[6] Non-Control/Non-Affiliate investments are generally defined by the 1940 Act, as investments that are neither control investments nor affiliate investments. At March 31, 2024, the Company held $1,286.4 million of non-control/non-affiliate investments, which represented approximately 87.1% of the Company’s investment assets. The fair value of these investments as a percent of net assets is 170.2%.
[7] The Company's investment portfolio is comprised entirely of debt and equity securities of privately held companies for which quoted prices falling within the categories of Level 1 and Level 2 inputs are not readily available. Therefore, the Company values all of its portfolio investments at fair value, as determined in good faith by the valuation committee comprised of certain officers of the Company (the "Valuation Committee") as the valuation designee of the Board of Directors (the "Valuation Designee") pursuant to Rule 2a-5 under the Investment Company Act of 1940, as amended (the “1940 Act”), using significant unobservable Level 3 inputs. Refer to Note 4 - Fair Value Measurements for further discussion.
[8] Equity ownership may be held in shares or units of a company that is either wholly owned by the portfolio company or under common control by the same parent company to the portfolio company.
[9] Unless otherwise noted, all portfolio company headquarters are based in the United States.
[10] Affiliate investments are generally defined by the 1940 Act as investments in which between 5% and 25% of the voting securities are owned and the investments are not classified as control investments. At March 31, 2025, the Company held $292.9 million of affiliate investments, which represented approximately 16.4% of the Company’s investment assets. The fair value of these investments as a percent of net assets is 33.1%.
[11] All debt investments are income-producing, unless otherwise noted. Equity investments are non-income producing, unless otherwise noted.
[12] Control investments are generally defined by the 1940 Act as investments in which the Company owns more than 25% of the voting securities or has greater than 50% representation on its board. At March 31, 2025, the Company held $56.1 million of control investments, which represented approximately 3.1% of the Company's investment assets. The fair value of these investments as a percent of net assets is 6.3%. In accordance with Rules 3-09 and 4-08(g) of Regulation S-X, the Company must determine if its unconsolidated subsidiaries are considered "significant subsidiaries." As of March 31, 2025, there were no unconsolidated subsidiaries that are considered "significant subsidiaries."
[13] Non-Control/Non-Affiliate investments are generally defined by the 1940 Act as investments that are neither control investments nor affiliate investments. Investments are classified as non-control/non-affiliate investments, unless otherwise noted. At March 31, 2025, the Company held $1,436.3 million of non-control/non-affiliate investments, which represented approximately 80.5% of the Company’s investment assets. The fair value of these investments as a percent of net assets is 162.6%.
[14] The Company's investment portfolio is comprised entirely of debt and equity securities of privately held companies for which quoted prices falling within the categories of Level 1 and Level 2 inputs are not readily available. Therefore, the Company values all of its portfolio investments at fair value, as determined in good faith by the valuation committee comprised of certain officers of the Company (the "Valuation Committee") as the valuation designee of the Board of Directors (the "Valuation Designee") pursuant to Rule 2a-5 under the Investment Company Act of 1940, as amended (the “1940 Act”), using significant unobservable Level 3 inputs. Refer to Note 4 - Fair Value Measurements for further discussion.
[15] The investment is structured as a first lien first out term loan.
[16] The investment is structured as a first lien first out term loan.
[17] All of the Company’s investments, the investments of Capital Southwest SPV LLC ("SPV") and the investments of SBIC I (as defined below) are pledged as collateral for the Company’s senior secured revolving credit facility, the SPV's financing credit facility or in support of the SBA-guaranteed debentures to be issued by Capital Southwest SBIC I, LP, the Company's wholly-owned subsidiary that operates as a small business investment company ("SBIC I"), respectively.
[18] All of the Company’s investments, the investments of Capital Southwest SPV LLC ("SPV") and the investments of SBIC I (as defined below) are pledged as collateral for the Company’s senior secured revolving credit facility, the SPV's financing credit facility or in support of the SBA-guaranteed debentures to be issued by Capital Southwest SBIC I, LP, the Company's wholly-owned subsidiary that operates as a small business investment company ("SBIC I"), respectively.
[19] Investment is held through a wholly-owned taxable subsidiary that has elected to be treated as a corporation for U.S. federal income tax purposes. Refer to Note 1 - Organization and Basis for Presentation for further discussion.
[20] Indicates assets that are not considered "qualifying assets" under Section 55(a) of the 1940 Act. Qualifying assets must represent at least 70% of total assets at the time of acquisition of any additional non-qualifying assets. As of March 31, 2025, approximately 10.0% of the Company's total assets (at fair value) were non-qualifying assets.
[21] Investment is held through a wholly-owned taxable subsidiary.
[22] Indicates assets that are not considered "qualifying assets" under Section 55(a) of the 1940 Act. Qualifying assets must represent at least 70% of total assets at the time of acquisition of any additional non-qualifying assets. As of March 31, 2024, approximately 10.6% of the Company's total assets (at fair value) were non-qualifying assets.
[23] The investment has an unfunded commitment as of March 31, 2024. Refer to Note 12 - Commitments and Contingencies for further discussion.
[24] The investment is structured as a first lien last out term loan.
[25] The investment is structured as a first lien last out term loan.
[26] The investment is structured as a split lien term loan, which provides the Company with a first lien priority on certain assets of the obligor and a second lien priority on different assets of the obligor.
[27] The investment is structured as a split lien term loan, which provides the Company with a first lien priority on certain assets of the obligor and a second lien priority on different assets of the obligor.
[28] The investment has an unfunded commitment as of March 31, 2025. Refer to Note 12 - Commitments and Contingencies for further discussion.
[29] Investment is on non-accrual status as of March 31, 2024, meaning the Company has ceased to recognize interest income on the investment.
[30] Portfolio company headquarters are located outside of the United States.
23.Maturity date is under on-going negotiations with the portfolio company and other lenders, if applicable.
[31] Portfolio company headquarters are located outside of the United States.
[32] Income producing through dividends or distributions.
[33] Income producing through dividends or distributions.
[34] Investment is on non-accrual status as of March 31, 2025, meaning the Company has ceased to recognize interest income on the investment.