Quarterly report pursuant to Section 13 or 15(d)

Consolidated Schedule of Investments In and Advances to Affiliates (Details)

v3.23.1
Consolidated Schedule of Investments In and Advances to Affiliates (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) $ 3,432 $ 253  
Amount of Unrealized Gain/(Loss) (4,139) 3,731  
Control investments      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) 631 0  
Amount of Unrealized Gain/(Loss) (686) 177  
Amount of Interest, Fees or Dividends Credited to Income 809 1,001  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 50,303 46,583  
Gross Additions 1,189 347  
Gross Reductions 1,586 0  
Ending balance 49,906 46,930  
Control investments | Southwest      
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Ending balance $ 49,318 $ 46,220  
Net assets, percentage 8.10% 7.50%  
Control investments | West      
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Ending balance $ 588 $ 710  
Net assets, percentage 0.10% 0.10%  
Affiliate investments      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) $ 1,637 $ 446  
Amount of Unrealized Gain/(Loss) 1,321 77  
Amount of Interest, Fees or Dividends Credited to Income 7,894 5,206  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 277,000 234,158  
Gross Additions 18,474 10,930  
Gross Reductions 24,633 4,088  
Ending balance 270,841 241,000  
Affiliate investments | Midwest      
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Ending balance $ 94,403 83,390  
Net assets, percentage 15.50%   13.50%
Affiliate investments | Northeast      
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Ending balance $ 20,461 $ 21,902  
Net assets, percentage 3.40% 3.60%  
Affiliate investments | Southeast      
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Ending balance $ 38,664 $ 31,907  
Net assets, percentage 6.40% 5.20%  
Affiliate investments | Southwest      
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Ending balance $ 79,994 $ 66,266  
Net assets, percentage 13.20% 10.70%  
Affiliate investments | West      
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Ending balance $ 37,319 $ 37,535  
Net assets, percentage 6.10% 6.10%  
Investment, Identifier [Axis]: AAC Holdings, Inc., Secured Debt      
Schedule of Investments [Line Items]      
Total Rate [1]     18.00%
PIK Rate [1]     18.00%
Investment, Identifier [Axis]: AAC Holdings, Inc., Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate [2] 18.00%    
Investment, Identifier [Axis]: AAC Holdings, Inc., Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate [2] 18.00%    
PIK Rate [2] 18.00%    
Investment, Identifier [Axis]: AB Centers Acquisition Corporation, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate [3],[4] 13.00%    
Spread 5.00% [3],[4]   6.00% [5],[6]
Investment, Identifier [Axis]: AB Centers Acquisition Corporation, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 10.80% [3],[4],[7],[8]   10.20% [5],[6]
Spread 6.00% [3],[4],[7],[8]   6.00% [5],[6]
Investment, Identifier [Axis]: AB Centers Acquisition Corporation, Secured Debt 3      
Schedule of Investments [Line Items]      
Total Rate 10.79% [3],[4],[7]   10.58% [5],[6]
Spread 6.00% [3],[4],[7]   6.00% [5],[6]
Investment, Identifier [Axis]: ADS Tactical, Inc., Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 10.59% [2],[4]   10.14% [1],[6]
Spread 5.75% [2],[4]   5.75% [1],[6]
Investment, Identifier [Axis]: AFG Capital Group, LLC, Preferred Member Units      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) $ 0 $ 0  
Amount of Unrealized Gain/(Loss) 0 160  
Amount of Interest, Fees or Dividends Credited to Income 0 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 2,350 1,930  
Gross Additions 0 160  
Gross Reductions 0 0  
Ending balance $ 2,350 $ 2,090  
Investment, Identifier [Axis]: AFG Capital Group, LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate   10.00%  
Amount of Realized Gain/(Loss)   $ 0  
Amount of Unrealized Gain/(Loss)   0  
Amount of Interest, Fees or Dividends Credited to Income   1  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance   36  
Gross Additions   0  
Gross Reductions   22  
Ending balance   14  
Investment, Identifier [Axis]: AMEREQUIP LLC., Secured Debt 1      
Schedule of Investments [Line Items]      
Spread 7.40% [3],[4],[7],[9]   7.40% [5],[6]
Investment, Identifier [Axis]: AMEREQUIP LLC., Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 12.10% [3],[4],[7]   11.72% [5],[6]
Spread 7.40% [3],[4],[7]   7.40% [5],[6]
Investment, Identifier [Axis]: ASK (Analytical Systems Keco Holdings, LLC), Preferred Member Units      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss)   0  
Amount of Unrealized Gain/(Loss)   (140)  
Amount of Interest, Fees or Dividends Credited to Income   0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance   1,220  
Gross Additions   0  
Gross Reductions   140  
Ending balance   $ 1,080  
Investment, Identifier [Axis]: ASK (Analytical Systems Keco Holdings, LLC), Preferred Member Units 1      
Schedule of Investments [Line Items]      
Total Rate 14.13%    
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 0    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 0    
Gross Additions 0    
Gross Reductions 0    
Ending balance 0    
Investment, Identifier [Axis]: ASK (Analytical Systems Keco Holdings, LLC), Preferred Member Units 2      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) 0    
Amount of Unrealized Gain/(Loss) 20    
Amount of Interest, Fees or Dividends Credited to Income 0    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 880    
Gross Additions 20    
Gross Reductions 0    
Ending balance $ 900    
Investment, Identifier [Axis]: ASK (Analytical Systems Keco Holdings, LLC), Secured Debt      
Schedule of Investments [Line Items]      
Total Rate   12.00%  
Spread   10.00%  
Amount of Realized Gain/(Loss)   $ 0  
Amount of Unrealized Gain/(Loss)   0  
Amount of Interest, Fees or Dividends Credited to Income   42  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance   1,178  
Gross Additions   7  
Gross Reductions   17  
Ending balance   1,168  
Investment, Identifier [Axis]: ASK (Analytical Systems Keco Holdings, LLC), Secured Debt 1      
Schedule of Investments [Line Items]      
Spread 10.00%    
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 1    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance (2)    
Gross Additions 0    
Gross Reductions 0    
Ending balance $ (2)    
Investment, Identifier [Axis]: ASK (Analytical Systems Keco Holdings, LLC), Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 14.75%    
Spread 10.00%    
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 47    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 1,135    
Gross Additions 5    
Gross Reductions 18    
Ending balance 1,122    
Investment, Identifier [Axis]: ASK (Analytical Systems Keco Holdings, LLC), Warrants      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) 0 0  
Amount of Unrealized Gain/(Loss) 0 0  
Amount of Interest, Fees or Dividends Credited to Income 0 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 0 0  
Gross Additions 0 0  
Gross Reductions 0 0  
Ending balance $ 0 $ 0  
Investment, Identifier [Axis]: ATS Operating, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate [3],[4],[7] 11.39%    
Spread 6.50% [3],[4],[7]   5.50% [5],[6]
Investment, Identifier [Axis]: ATS Operating, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 10.09% [3],[4],[7]   9.32% [5],[6]
Spread 5.50% [3],[4],[7]   5.50% [5],[6]
Investment, Identifier [Axis]: ATS Operating, LLC, Secured Debt 3      
Schedule of Investments [Line Items]      
Total Rate 12.09% [3],[4],[7]   11.32% [5],[6]
Spread 7.50% [3],[4],[7]   7.50% [5],[6]
Investment, Identifier [Axis]: ATX Networks Corp., Common Stock      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) $ 3,178    
Amount of Unrealized Gain/(Loss) (3,290)    
Amount of Interest, Fees or Dividends Credited to Income 0    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 3,290    
Gross Additions 3,178    
Gross Reductions 6,468    
Ending balance $ 0    
Investment, Identifier [Axis]: ATX Networks Corp., Secured Debt      
Schedule of Investments [Line Items]      
Total Rate   8.50% 12.23% [1],[6]
Spread 7.50% 7.50% 7.50% [1],[6]
Amount of Realized Gain/(Loss) $ 0 $ 0  
Amount of Unrealized Gain/(Loss) (102) 235  
Amount of Interest, Fees or Dividends Credited to Income 682 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 6,368 7,121  
Gross Additions 545 235  
Gross Reductions 6,913 96  
Ending balance $ 0 $ 7,260  
Investment, Identifier [Axis]: ATX Networks Corp., Unsecured Debt      
Schedule of Investments [Line Items]      
Total Rate   10.00% 10.00% [1]
PIK Rate 10.00% 10.00% 10.00% [1]
Amount of Realized Gain/(Loss) $ 0 $ 0  
Amount of Unrealized Gain/(Loss) (276) 84  
Amount of Interest, Fees or Dividends Credited to Income 1,135 74  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 2,614 1,977  
Gross Additions 1,135 159  
Gross Reductions 3,749 0  
Ending balance $ 0 2,136  
Investment, Identifier [Axis]: AVEX Aviation Holdings, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate [3],[4],[7] 12.52%    
Spread 7.75% [3],[4],[7]   7.25% [5],[6]
Investment, Identifier [Axis]: AVEX Aviation Holdings, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 12.61% [3],[4],[7]   12.17% [5],[6]
Spread 7.75% [3],[4],[7]   7.25% [5],[6]
Investment, Identifier [Axis]: Acumera, Inc., Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 14.13% [3]   13.88% [5],[6]
Spread 9.50% [3]   9.50% [5],[6]
Investment, Identifier [Axis]: Acumera, Inc., Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 14.13% [3]   13.57% [5],[6]
Spread 9.50% [3]   9.00% [5],[6]
Investment, Identifier [Axis]: Acumera, Inc., Secured Debt 3      
Schedule of Investments [Line Items]      
Total Rate [3] 14.13%    
Spread [3] 9.50%    
Investment, Identifier [Axis]: Adams Publishing Group, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 10.00% [3],[4],[10]   10.00% [5],[6],[11]
Spread 6.50% [3],[4],[10]   6.00% [5],[6],[11]
Investment, Identifier [Axis]: Adams Publishing Group, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 10.00% [3],[4],[12]   10.00% [5],[6],[11]
Spread 7.50% [3],[4],[12]   7.50% [5],[6],[11]
Investment, Identifier [Axis]: American Health Staffing Group, Inc., Secured Debt 1      
Schedule of Investments [Line Items]      
Spread 6.00% [3],[4],[9]   6.00% [5],[6]
Investment, Identifier [Axis]: American Health Staffing Group, Inc., Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 11.12% [3],[4]   11.12% [5],[6]
Spread 6.00% [3],[4]   6.00% [5],[6]
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 12.49% [3],[4],[7]   10.46% [5],[6]
Spread 6.75% [3],[4],[7]   6.75% [5],[6]
PIK Rate [3],[4],[7] 1.00%    
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 14.49% [3],[4],[7]   12.46% [5],[6]
Spread 8.75% [3],[4],[7]   8.75% [5],[6]
PIK Rate [3],[4],[7] 1.00%    
Investment, Identifier [Axis]: American Teleconferencing Services, Ltd., Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 7.50% [2],[13]   7.50% [1],[14]
Spread 6.50% [2],[13]   6.50% [1],[14]
Investment, Identifier [Axis]: American Teleconferencing Services, Ltd., Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 7.50% [2],[4],[13]   7.50% [1],[6],[14]
Spread 6.50% [2],[4],[13]   6.50% [1],[6],[14]
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Preferred Member Units 1      
Schedule of Investments [Line Items]      
Total Rate 14.13%   14.13%
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Spread 10.00% [4],[9]   10.00% [6]
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 14.75% [4]   14.13% [6]
Spread 10.00% [4]   10.00% [6]
Investment, Identifier [Axis]: ArborWorks, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 14.83% [3],[4],[7]   13.41% [5],[6]
Spread 7.00% [3],[4],[7]   9.00% [5],[6]
PIK Rate [3],[4],[7] 3.00%    
Investment, Identifier [Axis]: ArborWorks, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 14.83% [3],[4],[7]   13.56% [5],[6]
Spread 7.00% [3],[4],[7]   9.00% [5],[6]
PIK Rate [3],[4],[7] 3.00%    
Investment, Identifier [Axis]: Archer Systems, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Spread 6.00% [3],[4],[7],[9]   6.50% [5],[6]
Investment, Identifier [Axis]: Archer Systems, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 10.72% [3],[4],[7]   10.92% [5],[6]
Spread 6.00% [3],[4],[7]   6.50% [5],[6]
Investment, Identifier [Axis]: BBB Tank Services, LLC, Preferred Stock (non-voting)      
Schedule of Investments [Line Items]      
Total Rate 15.00%   15.00%
Investment, Identifier [Axis]: BBB Tank Services, LLC, Unsecured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 15.66% [4],[15]   15.12% [6],[16]
Spread 11.00% [4],[15]   11.00% [6],[16]
Investment, Identifier [Axis]: BBB Tank Services, LLC, Unsecured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 15.66% [4],[15]   15.12% [6],[16]
Spread 11.00% [4],[15]   11.00% [6],[16]
Investment, Identifier [Axis]: Barfly Ventures, LLC, Member Units      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) (93)    
Amount of Interest, Fees or Dividends Credited to Income 0    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 1,107    
Gross Additions 0    
Gross Reductions 94    
Ending balance 1,013    
Investment, Identifier [Axis]: Barfly Ventures, LLC, Preferred Member Units      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss)   0  
Amount of Unrealized Gain/(Loss)   40  
Amount of Interest, Fees or Dividends Credited to Income   0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance   643  
Gross Additions   40  
Gross Reductions   0  
Ending balance   683  
Investment, Identifier [Axis]: Batjer TopCo, LLC, Member Units      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss)   0  
Amount of Unrealized Gain/(Loss)   0  
Amount of Interest, Fees or Dividends Credited to Income   0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance   0  
Gross Additions   453  
Gross Reductions   0  
Ending balance   $ 453  
Investment, Identifier [Axis]: Batjer TopCo, LLC, Preferred Stock      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) 0    
Amount of Unrealized Gain/(Loss) 225    
Amount of Interest, Fees or Dividends Credited to Income 19    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 455    
Gross Additions 225    
Gross Reductions 0    
Ending balance 680    
Investment, Identifier [Axis]: Batjer TopCo, LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate   11.00%  
Amount of Realized Gain/(Loss)   $ 0  
Amount of Unrealized Gain/(Loss)   0  
Amount of Interest, Fees or Dividends Credited to Income   10  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance   0  
Gross Additions   1,201  
Gross Reductions   0  
Ending balance   1,201  
Investment, Identifier [Axis]: Batjer TopCo, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 0    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance (1)    
Gross Additions 0    
Gross Reductions 0    
Ending balance $ (1)    
Investment, Identifier [Axis]: Batjer TopCo, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 11.00%   11.00%
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 36    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 1,205    
Gross Additions 2    
Gross Reductions 50    
Ending balance $ 1,157    
Investment, Identifier [Axis]: Berry Aviation, Inc., Preferred Member Units 1      
Schedule of Investments [Line Items]      
Total Rate 8.00% [3],[17],[18]   8.00% [5],[19],[20]
PIK Rate 8.00% [3],[17],[18]   8.00% [5],[19],[20]
Investment, Identifier [Axis]: Berry Aviation, Inc., Preferred Member Units 2      
Schedule of Investments [Line Items]      
PIK Rate 16.00% [3],[9],[17],[18]   16.00% [5],[19],[20]
Investment, Identifier [Axis]: Berry Aviation, Inc., Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 12.00% [3]   12.00% [5]
PIK Rate 1.50% [3]   1.50% [5]
Investment, Identifier [Axis]: Bettercloud, Inc., Secured Debt 1      
Schedule of Investments [Line Items]      
Spread 7.00% [3],[4],[7],[9]   1.00% [5],[6]
PIK Rate 6.00% [3],[4],[7],[9]   6.00% [5],[6]
Investment, Identifier [Axis]: Bettercloud, Inc., Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 11.89% [3],[4],[7]   11.40% [5],[6]
Spread 7.00% [3],[4],[7]   1.00% [5],[6]
PIK Rate 6.00% [3],[4],[7]   6.00% [5],[6]
Investment, Identifier [Axis]: Bluestem Brands, Inc., Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate [2],[4] 15.50%    
Spread 7.50% [2],[4]   8.50% [1],[6]
PIK Rate [2],[4] 14.50%    
Investment, Identifier [Axis]: Bluestem Brands, Inc., Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 13.07% [2],[4]   12.94% [1],[6]
Spread 8.50% [2],[4]   8.50% [1],[6]
PIK Rate [2],[4] 12.07%    
Investment, Identifier [Axis]: Boccella Precast Products LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 10.00%   10.00%
Investment, Identifier [Axis]: Brewer Crane Holdings, LLC, Preferred Member Units      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) $ 0 0  
Amount of Unrealized Gain/(Loss) (130) 10  
Amount of Interest, Fees or Dividends Credited to Income 8 66  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 1,770 1,930  
Gross Additions 0 10  
Gross Reductions 130 0  
Ending balance $ 1,640 $ 1,940  
Investment, Identifier [Axis]: Brewer Crane Holdings, LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 14.66% [4] 11.00% 14.12% [6]
Spread 10.00% [4] 10.00% 10.00% [6]
Amount of Realized Gain/(Loss) $ 0 $ 0  
Amount of Unrealized Gain/(Loss) 0 0  
Amount of Interest, Fees or Dividends Credited to Income 53 57  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 1,491 2,005  
Gross Additions 0 2  
Gross Reductions 31 31  
Ending balance $ 1,460 1,976  
Investment, Identifier [Axis]: Buca C, LLC, Preferred Member Units      
Schedule of Investments [Line Items]      
Total Rate 6.00%   6.00%
PIK Rate 6.00%   6.00%
Investment, Identifier [Axis]: Buca C, LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 12.00%   9.00%
Investment, Identifier [Axis]: Burning Glass Intermediate Holding Company, Inc., Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate [3],[4] 9.83%    
Spread 5.00% [3],[4]   5.00% [5],[6]
Investment, Identifier [Axis]: Burning Glass Intermediate Holding Company, Inc., Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 9.63% [3],[4]   8.91% [5],[6]
Spread 5.00% [3],[4]   5.00% [5],[6]
Investment, Identifier [Axis]: Cadence Aerospace LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate [5],[6],[21]     11.99%
Spread [5],[6],[21]     8.50%
PIK Rate [5],[6],[21]     0.01%
Investment, Identifier [Axis]: Cadence Aerospace LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate [3],[4] 13.14%    
Spread [3],[4] 6.50%    
PIK Rate [3],[4] 2.00%    
Investment, Identifier [Axis]: Cadence Aerospace LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate [3],[4] 13.14%    
Spread [3],[4] 6.50%    
PIK Rate [3],[4] 2.00%    
Investment, Identifier [Axis]: Cadence Aerospace LLC, Secured Debt 3      
Schedule of Investments [Line Items]      
Total Rate [3],[4] 13.33%    
Spread [3],[4] 6.50%    
PIK Rate [3],[4] 2.00%    
Investment, Identifier [Axis]: Cadence Aerospace LLC, Secured Debt 4      
Schedule of Investments [Line Items]      
Total Rate [3],[4] 13.23%    
Spread [3],[4] 6.50%    
PIK Rate [3],[4] 2.00%    
Investment, Identifier [Axis]: Cadence Aerospace LLC, Secured Debt 5      
Schedule of Investments [Line Items]      
Total Rate [3],[4] 13.33%    
Spread [3],[4] 6.50%    
PIK Rate [3],[4] 2.00%    
Investment, Identifier [Axis]: Camin Cargo Control, Inc., Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 11.34% [2],[4],[7]   10.88% [1],[6]
Spread 6.50% [2],[4],[7]   6.50% [1],[6]
Investment, Identifier [Axis]: Career Team Holdings, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Spread 6.00% [4],[9]   6.00% [6]
Investment, Identifier [Axis]: Career Team Holdings, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 12.50%   12.50%
Investment, Identifier [Axis]: CaseWorthy, Inc., Secured Debt 1      
Schedule of Investments [Line Items]      
Spread 6.00% [3],[4],[9]   6.00% [5],[6]
Investment, Identifier [Axis]: CaseWorthy, Inc., Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 10.73% [3],[4]   10.73% [5],[6]
Spread 6.00% [3],[4]   6.00% [5],[6]
Investment, Identifier [Axis]: CaseWorthy, Inc., Secured Debt 3      
Schedule of Investments [Line Items]      
Total Rate 10.73% [3],[4]   10.48% [5],[6]
Spread 6.00% [3],[4]   5.75% [5],[6]
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC, Preferred Member Units      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) $ 0 0  
Amount of Unrealized Gain/(Loss) 150 0  
Amount of Interest, Fees or Dividends Credited to Income 8 8  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 2,170 1,460  
Gross Additions 150 0  
Gross Reductions 0 0  
Ending balance $ 2,320 $ 1,460  
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate   12.00%  
Spread   10.00%  
Amount of Realized Gain/(Loss)   $ 0  
Amount of Unrealized Gain/(Loss)   0  
Amount of Interest, Fees or Dividends Credited to Income   73  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance   2,216  
Gross Additions   3  
Gross Reductions   38  
Ending balance   2,181  
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Spread 9.00% [4],[9]   9.00% [6]
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 1    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 0    
Gross Additions 0    
Gross Reductions 0    
Ending balance $ 0    
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 13.75% [4]   13.13% [6]
Spread 9.00% [4]   9.00% [6]
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 130    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 3,731    
Gross Additions 2    
Gross Reductions 0    
Ending balance 3,733    
Investment, Identifier [Axis]: Chamberlin Holding LLC, Member Units      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss)   0  
Amount of Unrealized Gain/(Loss)   (27)  
Amount of Interest, Fees or Dividends Credited to Income   78  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance   6,415  
Gross Additions   0  
Gross Reductions   27  
Ending balance   $ 6,388  
Investment, Identifier [Axis]: Chamberlin Holding LLC, Member Units 1      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) 0    
Amount of Unrealized Gain/(Loss) (30)    
Amount of Interest, Fees or Dividends Credited to Income 71    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 5,728    
Gross Additions 0    
Gross Reductions 28    
Ending balance 5,700    
Investment, Identifier [Axis]: Chamberlin Holding LLC, Member Units 2      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) 0    
Amount of Unrealized Gain/(Loss) 30    
Amount of Interest, Fees or Dividends Credited to Income 6    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 678    
Gross Additions 30    
Gross Reductions 0    
Ending balance $ 708    
Investment, Identifier [Axis]: Chamberlin Holding LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate   9.00%  
Spread   8.00%  
Amount of Realized Gain/(Loss)   $ 0  
Amount of Unrealized Gain/(Loss)   (11)  
Amount of Interest, Fees or Dividends Credited to Income   110  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance   4,454  
Gross Additions   11  
Gross Reductions   45  
Ending balance   4,420  
Investment, Identifier [Axis]: Chamberlin Holding LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Spread 6.00% [4],[7]   6.00% [6]
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 1    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 0    
Gross Additions 0    
Gross Reductions 0    
Ending balance $ 0    
Investment, Identifier [Axis]: Chamberlin Holding LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 12.86% [4],[7]   12.13% [6]
Spread 8.00% [4],[7]   8.00% [6]
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) (3)    
Amount of Interest, Fees or Dividends Credited to Income 137    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 4,236    
Gross Additions 3    
Gross Reductions 3    
Ending balance $ 4,236    
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 11.06% [3],[4],[7],[22]   10.72% [5],[6],[23]
Spread 6.25% [3],[4],[7],[22]   6.25% [5],[6],[23]
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 11.08% [3],[4],[7],[22]   10.71% [5],[6],[24]
Spread 6.25% [3],[4],[7],[22]   6.25% [5],[6],[24]
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 3      
Schedule of Investments [Line Items]      
Total Rate [3],[4],[7] 11.14%    
Spread [3],[4],[7] 6.25%    
Investment, Identifier [Axis]: Charps, LLC, Preferred Member Units      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) $ 0 0  
Amount of Unrealized Gain/(Loss) 60 20  
Amount of Interest, Fees or Dividends Credited to Income 49 52  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 3,330 3,500  
Gross Additions 60 20  
Gross Reductions 0 0  
Ending balance 3,390 $ 3,520  
Investment, Identifier [Axis]: Charps, LLC, Unsecured Debt      
Schedule of Investments [Line Items]      
Total Rate   10.00%  
Amount of Realized Gain/(Loss)   $ 0  
Amount of Unrealized Gain/(Loss)   0  
Amount of Interest, Fees or Dividends Credited to Income   0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance   0  
Gross Additions   0  
Gross Reductions   0  
Ending balance   0  
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Member Units      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss)   0  
Amount of Unrealized Gain/(Loss)   20  
Amount of Interest, Fees or Dividends Credited to Income   87  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance   2,693  
Gross Additions   20  
Gross Reductions   1  
Ending balance   $ 2,712  
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Member Units 1      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) 0    
Amount of Unrealized Gain/(Loss) (270)    
Amount of Interest, Fees or Dividends Credited to Income 13    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 2,060    
Gross Additions 0    
Gross Reductions 270    
Ending balance 1,790    
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Member Units 2      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) 0    
Amount of Unrealized Gain/(Loss) 55    
Amount of Interest, Fees or Dividends Credited to Income 0    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 152    
Gross Additions 55    
Gross Reductions 0    
Ending balance $ 207    
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 13.79% [4],[7] 10.50% 13.23% [6]
Spread 9.00% [4],[7] 9.50% 9.00% [6]
Amount of Realized Gain/(Loss) $ 0 $ 0  
Amount of Unrealized Gain/(Loss) 0 0  
Amount of Interest, Fees or Dividends Credited to Income 0 69  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 0 2,620  
Gross Additions 0 0  
Gross Reductions 0 0  
Ending balance $ 0 $ 2,620  
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 10.00% 10.00% 10.00%
Amount of Realized Gain/(Loss)   $ 0  
Amount of Unrealized Gain/(Loss)   0  
Amount of Interest, Fees or Dividends Credited to Income   7  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance   268  
Gross Additions   0  
Gross Reductions   2  
Ending balance   266  
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Secured Debt 2.1      
Schedule of Investments [Line Items]      
Total Rate 13.79%    
Spread 9.00%    
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 89    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 2,620    
Gross Additions 0    
Gross Reductions 120    
Ending balance $ 2,500    
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Secured Debt 3      
Schedule of Investments [Line Items]      
Total Rate 10.00%    
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 7    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 260    
Gross Additions 0    
Gross Reductions 2    
Ending balance $ 258    
Investment, Identifier [Axis]: Clarius BIGS, LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 15.00% [3],[13],[15]   15.00% [5],[14],[16]
PIK Rate 15.00% [3],[13],[15]   15.00% [5],[14],[16]
Investment, Identifier [Axis]: Classic H&G Holdings, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 10.88% [4]   9.75% [6]
Spread 6.00% [4]   6.00% [6]
Investment, Identifier [Axis]: Classic H&G Holdings, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 8.00%   8.00%
Investment, Identifier [Axis]: Cody Pools, Inc., Preferred Member Units      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) $ 0 0  
Amount of Unrealized Gain/(Loss) 240 0  
Amount of Interest, Fees or Dividends Credited to Income 7 172  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 14,550 11,910  
Gross Additions 240 0  
Gross Reductions 0 0  
Ending balance $ 14,790 $ 11,910  
Investment, Identifier [Axis]: Cody Pools, Inc., Secured Debt      
Schedule of Investments [Line Items]      
Total Rate   12.25%  
Spread   10.50%  
Amount of Realized Gain/(Loss)   $ 0  
Amount of Unrealized Gain/(Loss)   4  
Amount of Interest, Fees or Dividends Credited to Income   234  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance   7,181  
Gross Additions   649  
Gross Reductions   640  
Ending balance   7,190  
Investment, Identifier [Axis]: Cody Pools, Inc., Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 15.50% [4]   15.38% [6]
Spread 10.50% [4]   10.50% [6]
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) 2    
Amount of Interest, Fees or Dividends Credited to Income 11    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 273    
Gross Additions 3    
Gross Reductions 80    
Ending balance $ 196    
Investment, Identifier [Axis]: Cody Pools, Inc., Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 15.50% [4]   15.38% [6]
Spread 10.50% [4]   10.50% [6]
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) (7)    
Amount of Interest, Fees or Dividends Credited to Income 268    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 6,882    
Gross Additions 7    
Gross Reductions 83    
Ending balance 6,806    
Investment, Identifier [Axis]: Colonial Electric Company LLC, Preferred Member Units      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) 0 0  
Amount of Unrealized Gain/(Loss) (240) 0  
Amount of Interest, Fees or Dividends Credited to Income (318) 93  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 2,290 2,280  
Gross Additions 0 0  
Gross Reductions 240 0  
Ending balance 2,050 $ 2,280  
Investment, Identifier [Axis]: Colonial Electric Company LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate   12.00%  
Amount of Realized Gain/(Loss)   $ 0  
Amount of Unrealized Gain/(Loss)   0  
Amount of Interest, Fees or Dividends Credited to Income   192  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance   6,007  
Gross Additions   10  
Gross Reductions   79  
Ending balance   5,938  
Investment, Identifier [Axis]: Colonial Electric Company LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 0    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 0    
Gross Additions 0    
Gross Reductions 0    
Ending balance $ 0    
Investment, Identifier [Axis]: Colonial Electric Company LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 12.00%   12.00%
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 181    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 5,729    
Gross Additions 9    
Gross Reductions 79    
Ending balance $ 5,659    
Investment, Identifier [Axis]: Computer Data Source, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 12.34% [3],[4],[25]   12.56% [5],[6],[26]
Spread 7.50% [3],[4],[25]   8.00% [5],[6],[26]
Investment, Identifier [Axis]: Computer Data Source, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 12.35% [3],[4]   12.56% [5],[6]
Spread 7.50% [3],[4]   8.00% [5],[6]
Investment, Identifier [Axis]: Copper Trail Energy Fund I, LP - CTMH, LP Interests (CTMH, LP)      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss)   0  
Amount of Unrealized Gain/(Loss)   0  
Amount of Interest, Fees or Dividends Credited to Income   0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance   710  
Gross Additions   0  
Gross Reductions   0  
Ending balance   710  
Investment, Identifier [Axis]: Copper Trail Fund Investments, LP Interests (CTMH, LP)      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 0    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 588    
Gross Additions 0    
Gross Reductions 0    
Ending balance $ 588    
Investment, Identifier [Axis]: DMA Industries, LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 12.00%   12.00%
Investment, Identifier [Axis]: DTE Enterprises, LLC, Class A Preferred Member Units      
Schedule of Investments [Line Items]      
Total Rate 8.00% [3]   8.00% [5]
PIK Rate 8.00% [3]   8.00% [5]
Investment, Identifier [Axis]: DTE Enterprises, LLC, Class AA Preferred Member Units (non-voting)      
Schedule of Investments [Line Items]      
Total Rate 10.00% [3],[17]   10.00% [5],[19]
PIK Rate 10.00% [3],[17]   10.00% [5],[19]
Investment, Identifier [Axis]: DTE Enterprises, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Spread 7.50% [3],[4],[9]   7.50% [5],[6]
Investment, Identifier [Axis]: DTE Enterprises, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 12.44% [3],[4]   12.24% [5],[6]
Spread 7.50% [3],[4]   7.50% [5],[6]
Investment, Identifier [Axis]: Dalton US Inc., Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 12.33% [3],[4],[7],[27]   11.90% [5],[6]
Spread 7.50% [3],[4],[7],[27]   8.00% [5],[6]
Investment, Identifier [Axis]: Dalton US Inc., Secured Debt 2      
Schedule of Investments [Line Items]      
Spread 7.50% [3],[4],[7],[9]   8.00% [5],[6]
Investment, Identifier [Axis]: Dalton US Inc., Secured Debt 3      
Schedule of Investments [Line Items]      
Total Rate 12.26% [3],[4],[7]   12.56% [5],[6]
Spread 7.50% [3],[4],[7]   8.00% [5],[6]
Investment, Identifier [Axis]: Datacom, LLC, Preferred Member Units      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) $ 0 0  
Amount of Unrealized Gain/(Loss) 0 10  
Amount of Interest, Fees or Dividends Credited to Income 0 3  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 300 290  
Gross Additions 0 10  
Gross Reductions 0 0  
Ending balance $ 300 $ 300  
Investment, Identifier [Axis]: Datacom, LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate   7.50%  
Amount of Realized Gain/(Loss)   $ 0  
Amount of Unrealized Gain/(Loss)   0  
Amount of Interest, Fees or Dividends Credited to Income   25  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance   852  
Gross Additions   6  
Gross Reductions   7  
Ending balance   851  
Investment, Identifier [Axis]: Datacom, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 7.50%   7.50%
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 0    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 25    
Gross Additions 25    
Gross Reductions 0    
Ending balance $ 50    
Investment, Identifier [Axis]: Datacom, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 10.00%   7.50%
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 30    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 865    
Gross Additions 6    
Gross Reductions 7    
Ending balance 864    
Investment, Identifier [Axis]: Digital Products Holdings LLC, Preferred Member Units      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) 0 0  
Amount of Unrealized Gain/(Loss) 0 0  
Amount of Interest, Fees or Dividends Credited to Income 13 13  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 2,459 2,459  
Gross Additions 0 0  
Gross Reductions 0 0  
Ending balance $ 2,459 $ 2,459  
Investment, Identifier [Axis]: Digital Products Holdings LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 14.75% [4] 11.00% 14.13% [6]
Spread 10.00% [4] 10.00% 10.00% [6]
Amount of Realized Gain/(Loss) $ 0 $ 0  
Amount of Unrealized Gain/(Loss) 0 0  
Amount of Interest, Fees or Dividends Credited to Income 144 120  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 3,878 4,186  
Gross Additions 5 6  
Gross Reductions 82 83  
Ending balance 3,801 4,109  
Investment, Identifier [Axis]: Direct Marketing Solutions, Inc., Preferred Stock      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) 0 0  
Amount of Unrealized Gain/(Loss) (130) 1,020  
Amount of Interest, Fees or Dividends Credited to Income 43 86  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 5,558 4,590  
Gross Additions 0 1,020  
Gross Reductions 128 0  
Ending balance 5,430 $ 5,610  
Investment, Identifier [Axis]: Direct Marketing Solutions, Inc., Secured Debt      
Schedule of Investments [Line Items]      
Total Rate   12.00%  
Spread   11.00%  
Amount of Realized Gain/(Loss)   $ 0  
Amount of Unrealized Gain/(Loss)   1  
Amount of Interest, Fees or Dividends Credited to Income   150  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance   4,698  
Gross Additions   14  
Gross Reductions   75  
Ending balance   4,637  
Investment, Identifier [Axis]: Direct Marketing Solutions, Inc., Secured Debt 1      
Schedule of Investments [Line Items]      
Spread [6]     11.00%
Amount of Realized Gain/(Loss) 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 1    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 0    
Gross Additions 0    
Gross Reductions 0    
Ending balance $ 0    
Investment, Identifier [Axis]: Direct Marketing Solutions, Inc., Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 14.00%   15.13% [6]
Spread [6]     11.00%
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) (4)    
Amount of Interest, Fees or Dividends Credited to Income 189    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 5,352    
Gross Additions 4    
Gross Reductions 84    
Ending balance $ 5,272    
Investment, Identifier [Axis]: Dynamic Communities, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 9.18% [3],[4],[7]   9.18% [5],[6]
Spread 4.50% [3],[4],[7]   4.50% [5],[6]
PIK Rate 9.18% [3],[4],[7]   9.18% [5],[6]
Investment, Identifier [Axis]: Dynamic Communities, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 11.18% [3],[4],[7]   11.18% [5],[6]
Spread 6.50% [3],[4],[7]   6.50% [5],[6]
PIK Rate 11.18% [3],[4],[7]   11.18% [5],[6]
Investment, Identifier [Axis]: EPIC Y-Grade Services, LP, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 10.96% [2],[4]   10.70% [1],[6]
Spread 6.00% [2],[4]   6.00% [1],[6]
Investment, Identifier [Axis]: Elgin AcquireCo, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Spread 6.00% [4],[7],[9]   6.00% [6]
Investment, Identifier [Axis]: Elgin AcquireCo, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 12.00%   12.00%
Investment, Identifier [Axis]: Elgin AcquireCo, LLC, Secured Debt 3      
Schedule of Investments [Line Items]      
Total Rate 9.00%   9.00%
Investment, Identifier [Axis]: Emerald Technologies Acquisition Co, Inc., Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 10.97% [2],[4],[7]   10.67% [1],[6]
Spread 6.25% [2],[4],[7]   6.25% [1],[6]
Investment, Identifier [Axis]: Engineering Research & Consulting, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 11.43% [3],[4],[7]   11.68% [5],[6]
Spread 6.50% [3],[4],[7]   6.50% [5],[6]
Investment, Identifier [Axis]: Engineering Research & Consulting, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 11.43% [3],[4],[7]   10.92% [5],[6]
Spread 6.50% [3],[4],[7]   6.50% [5],[6]
Investment, Identifier [Axis]: Event Holdco, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 11.73% [3],[4],[7],[18]   10.67% [5],[6],[20]
Spread 7.00% [3],[4],[7],[18]   7.00% [5],[6],[20]
Investment, Identifier [Axis]: Event Holdco, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 11.73% [3],[4],[7],[18]   10.67% [5],[6],[20]
Spread 7.00% [3],[4],[7],[18]   7.00% [5],[6],[20]
Investment, Identifier [Axis]: Flame King Holdings, LLC, Preferred Equity      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) $ 0 0  
Amount of Unrealized Gain/(Loss) 900 0  
Amount of Interest, Fees or Dividends Credited to Income 134 70  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 4,400 2,600  
Gross Additions 900 0  
Gross Reductions 0 0  
Ending balance $ 5,300 $ 2,600  
Investment, Identifier [Axis]: Flame King Holdings, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 11.25% [4] 12.00% 10.75% [6]
Spread 6.50% [4] 11.00% 6.50% [6]
Amount of Realized Gain/(Loss) $ 0 $ 0  
Amount of Unrealized Gain/(Loss) (1) 0  
Amount of Interest, Fees or Dividends Credited to Income 54 167  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 1,900 5,145  
Gross Additions 1 8  
Gross Reductions 1 0  
Ending balance $ 1,900 $ 5,153  
Investment, Identifier [Axis]: Flame King Holdings, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 13.75% [4] 7.50% 13.25% [6]
Spread 9.00% [4] 6.50% 9.00% [6]
Amount of Realized Gain/(Loss) $ 0 $ 0  
Amount of Unrealized Gain/(Loss) (8) 0  
Amount of Interest, Fees or Dividends Credited to Income 188 35  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 5,300 1,581  
Gross Additions 8 301  
Gross Reductions 8 0  
Ending balance $ 5,300 1,882  
Investment, Identifier [Axis]: Flip Electronics LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 12.55% [3],[4],[7]   11.21% [5],[6]
Spread 7.50% [3],[4],[7]   7.50% [5],[6]
Investment, Identifier [Axis]: Flip Electronics LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 12.55% [3],[4],[7]   12.19% [5],[6]
Spread 7.50% [3],[4],[7]   7.50% [5],[6]
Investment, Identifier [Axis]: Freeport Financial Funds, LP Interests (Freeport First Lien Loan Fund III LP)      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) $ 0 0  
Amount of Unrealized Gain/(Loss) 0 0  
Amount of Interest, Fees or Dividends Credited to Income 134 88  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 5,848 7,231  
Gross Additions 0 0  
Gross Reductions 536 0  
Ending balance 5,312 7,231  
Investment, Identifier [Axis]: GFG Group, LLC., Preferred Member Units      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) 0 0  
Amount of Unrealized Gain/(Loss) 110 0  
Amount of Interest, Fees or Dividends Credited to Income 10 63  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 1,790 1,750  
Gross Additions 110 0  
Gross Reductions 0 0  
Ending balance $ 1,900 $ 1,750  
Investment, Identifier [Axis]: GFG Group, LLC., Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 9.00% 12.00% 9.00%
Amount of Realized Gain/(Loss) $ 0 $ 0  
Amount of Unrealized Gain/(Loss) (4) (5)  
Amount of Interest, Fees or Dividends Credited to Income 68 99  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 2,836 3,136  
Gross Additions 4 5  
Gross Reductions 4 5  
Ending balance 2,836 3,136  
Investment, Identifier [Axis]: GRT Rubber Technologies LLC, Member Units      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) 0 0  
Amount of Unrealized Gain/(Loss) 0 0  
Amount of Interest, Fees or Dividends Credited to Income 21 600  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 21,890 22,750  
Gross Additions 0 0  
Gross Reductions 0 0  
Ending balance $ 21,890 $ 22,750  
Investment, Identifier [Axis]: GRT Rubber Technologies LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate   8.23%  
Spread   8.00%  
Amount of Realized Gain/(Loss)   $ 0  
Amount of Unrealized Gain/(Loss)   (12)  
Amount of Interest, Fees or Dividends Credited to Income   401  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance   19,152  
Gross Additions   1  
Gross Reductions   0  
Ending balance   19,153  
Investment, Identifier [Axis]: GRT Rubber Technologies LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 10.66%   10.12%
Spread 6.00%   6.00%
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) 1    
Amount of Interest, Fees or Dividends Credited to Income 13    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 330    
Gross Additions 145    
Gross Reductions 0    
Ending balance $ 475    
Investment, Identifier [Axis]: GRT Rubber Technologies LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 12.66%   12.12%
Spread 8.00%   8.00%
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) (12)    
Amount of Interest, Fees or Dividends Credited to Income 634    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 19,943    
Gross Additions 13    
Gross Reductions 12    
Ending balance 19,944    
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC, Member Units      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) 0 0  
Amount of Unrealized Gain/(Loss) 2,117 (1,151)  
Amount of Interest, Fees or Dividends Credited to Income 393 45  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 12,720 12,430  
Gross Additions 2,120 0  
Gross Reductions 0 1,151  
Ending balance $ 14,840 $ 11,279  
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate   10.50%  
Spread   8.50%  
Amount of Realized Gain/(Loss)   $ 0  
Amount of Unrealized Gain/(Loss)   (1)  
Amount of Interest, Fees or Dividends Credited to Income   130  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance   5,400  
Gross Additions   1  
Gross Reductions   1  
Ending balance   $ 5,400  
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Spread 8.50% [4],[7],[9],[28]   8.50% [6]
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 0    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 0    
Gross Additions 0    
Gross Reductions 0    
Ending balance $ 0    
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 11.50% [4],[7],[28]   11.50% [6]
Spread 8.50% [4],[7],[28]   8.50% [6]
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) (17)    
Amount of Interest, Fees or Dividends Credited to Income 474    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 16,020    
Gross Additions 17    
Gross Reductions 217    
Ending balance 15,820    
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Member Units      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 0    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 0    
Gross Additions 0    
Gross Reductions 0    
Ending balance 0    
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Preferred Equity      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 0    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 950    
Gross Additions 0    
Gross Reductions 0    
Ending balance $ 950    
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate   10.50%  
Spread 9.50% [4],[9] 9.50% 9.50% [6]
PIK Rate   5.25%  
Amount of Realized Gain/(Loss) $ 0 $ 0  
Amount of Unrealized Gain/(Loss) 0 0  
Amount of Interest, Fees or Dividends Credited to Income 0 1  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 0 64  
Gross Additions 0 0  
Gross Reductions 0 0  
Ending balance $ 0 $ 64  
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 12.50% 12.50% 12.50%
PIK Rate   6.25%  
Amount of Realized Gain/(Loss) $ 0 $ 0  
Amount of Unrealized Gain/(Loss) 0 (430)  
Amount of Interest, Fees or Dividends Credited to Income 19 53  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 571 2,429  
Gross Additions 0 0  
Gross Reductions 0 429  
Ending balance $ 571 2,000  
Investment, Identifier [Axis]: HDC/HW Intermediate Holdings, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 14.34% [3],[4],[7]   14.34% [5],[6]
Spread 9.50% [3],[4],[7]   9.50% [5],[6]
PIK Rate 14.34% [3],[4],[7]   2.00% [5],[6]
Investment, Identifier [Axis]: HDC/HW Intermediate Holdings, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 14.34% [3],[4],[7]   14.34% [5],[6]
Spread 9.50% [3],[4],[7]   9.50% [5],[6]
PIK Rate 14.34% [3],[4],[7]   2.00% [5],[6]
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Spread 6.50% [3],[4],[7],[9]   6.50% [5],[6]
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Spread 6.50% [3],[4],[7],[9]   6.50% [5],[6]
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC, Secured Debt 3      
Schedule of Investments [Line Items]      
Total Rate 11.12% [3],[4],[7]   10.62% [5],[6]
Spread 6.50% [3],[4],[7]   6.50% [5],[6]
Investment, Identifier [Axis]: HPEP 3, L.P., LP Interests (HPEP 3, L.P.)      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) $ 0 446  
Amount of Unrealized Gain/(Loss) 113 (280)  
Amount of Interest, Fees or Dividends Credited to Income 0 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 4,331 4,712  
Gross Additions 113 0  
Gross Reductions 508 280  
Ending balance 3,936 4,432  
Investment, Identifier [Axis]: Harris Preston Fund Investments, LP Interests (2717 HPP-MS, L.P.)      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss)   0  
Amount of Unrealized Gain/(Loss)   0  
Amount of Interest, Fees or Dividends Credited to Income   0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance   0  
Gross Additions   0  
Gross Reductions   0  
Ending balance   0  
Investment, Identifier [Axis]: Harris Preston Fund Investments, LP Interests (2717 MH, L.P.)      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) 631 0  
Amount of Unrealized Gain/(Loss) (675) 189  
Amount of Interest, Fees or Dividends Credited to Income 141 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 7,552 3,971  
Gross Additions 1,031 346  
Gross Reductions 1,574 0  
Ending balance $ 7,009 4,317  
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 10.75% [4]   10.13% [6]
Spread 6.00% [4]   6.00% [6]
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 10.00%   9.00%
Investment, Identifier [Axis]: Hybrid Promotions, LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 13.10% [3],[4],[7]   12.07% [5]
Spread 8.25% [3],[4],[7]   8.25% [5]
Investment, Identifier [Axis]: IG Parent Corporation, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate [1],[6],[29]     10.17%
Spread 5.75% [2],[4],[7],[9]   5.75% [1],[6],[29]
Investment, Identifier [Axis]: IG Parent Corporation, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 10.59% [2],[4],[7]   10.17% [1],[6]
Spread 5.75% [2],[4],[7]   5.75% [1],[6]
Investment, Identifier [Axis]: INW Manufacturing, LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 10.48% [4],[30]   10.48% [1],[6]
Spread 5.75% [4],[30]   5.75% [1],[6]
Investment, Identifier [Axis]: Implus Footcare, LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 13.99% [3],[4],[7]   13.98% [5],[6]
Spread 7.75% [3],[4],[7]   7.75% [5],[6]
PIK Rate 1.50% [3],[4],[7]   1.50% [5],[6]
Investment, Identifier [Axis]: Independent Pet Partners Intermediate Holdings, LLC, Preferred Stock (non-voting) 1      
Schedule of Investments [Line Items]      
Total Rate 6.00% [3]   6.00% [5]
PIK Rate 6.00% [3]   6.00% [5]
Investment, Identifier [Axis]: Independent Pet Partners Intermediate Holdings, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 6.00% [3],[13]   6.00% [5],[14]
PIK Rate 6.00% [3],[13]   6.00% [5],[14]
Investment, Identifier [Axis]: Independent Pet Partners Intermediate Holdings, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 14.95% [3]   14.42% [5]
Spread 10.00% [3]   10.00% [5]
PIK Rate 14.95% [3]   14.42% [5]
Investment, Identifier [Axis]: Independent Pet Partners Intermediate Holdings, LLC, Secured Debt 3      
Schedule of Investments [Line Items]      
Total Rate [3] 14.66%    
Spread [3] 10.00%    
PIK Rate [3] 14.66%    
Investment, Identifier [Axis]: Industrial Services Acquisition, LLC, Preferred Member Units 1      
Schedule of Investments [Line Items]      
Total Rate 10.00% [3],[17],[18]   10.00% [5],[19],[20]
PIK Rate 10.00% [3],[17],[18]   10.00% [5],[19],[20]
Investment, Identifier [Axis]: Industrial Services Acquisition, LLC, Preferred Member Units 2      
Schedule of Investments [Line Items]      
Total Rate 20.00% [3],[17],[18]   20.00% [5],[19],[20]
PIK Rate 20.00% [3],[17],[18]   20.00% [5],[19],[20]
Investment, Identifier [Axis]: Industrial Services Acquisition, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 11.50% [3],[4]   11.50% [5],[6]
Spread 6.75% [3],[4]   6.75% [5],[6]
Investment, Identifier [Axis]: Industrial Services Acquisition, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 11.50% [3],[4]   11.50% [5],[6]
Spread 6.75% [3],[4]   6.75% [5],[6]
Investment, Identifier [Axis]: Infinity X1 Holdings, LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 13.00%    
Investment, Identifier [Axis]: Infolinks Media Buyco, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Spread 5.50% [3],[4],[9]   5.50% [5],[6]
Investment, Identifier [Axis]: Infolinks Media Buyco, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 10.23% [3],[4]   10.23% [5],[6]
Spread 5.50% [3],[4]   5.50% [5],[6]
Investment, Identifier [Axis]: Interface Security Systems, L.L.C, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate [5],[31]     14.22%
Spread [5],[31]     10.00%
Investment, Identifier [Axis]: Interface Security Systems, L.L.C, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 14.76% [3]   12.07% [5],[6],[14]
Spread 10.00% [3]   7.00% [5],[6],[14]
PIK Rate [5],[6],[14]     1.00%
Investment, Identifier [Axis]: Interface Security Systems, L.L.C, Secured Debt 3      
Schedule of Investments [Line Items]      
Total Rate [3],[4],[13] 11.63%    
Spread [3],[4],[13] 7.00%    
PIK Rate [3],[4],[13] 11.63%    
Investment, Identifier [Axis]: Intermedia Holdings, Inc., Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 10.84% [2],[4]   10.38% [1],[6]
Spread 6.00% [2],[4]   6.00% [1],[6]
Investment, Identifier [Axis]: Invincible Boat Company, LLC., Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 11.32% [3],[4],[32]   10.14% [5],[6]
Spread 6.50% [3],[4],[32]   6.50% [5],[6]
Investment, Identifier [Axis]: Invincible Boat Company, LLC., Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 11.23% [3],[4]   10.17% [5],[6]
Spread 6.50% [3],[4]   6.50% [5],[6]
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 13.50%   12.50%
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 13.50%   12.50%
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 3      
Schedule of Investments [Line Items]      
Total Rate 13.50%   12.50%
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 4      
Schedule of Investments [Line Items]      
Total Rate 13.50%   12.50%
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 5      
Schedule of Investments [Line Items]      
Total Rate 13.50%    
Investment, Identifier [Axis]: Isagenix International, LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 9.93% [2],[4],[13]   9.93% [1],[6],[14]
Spread 7.75% [2],[4],[13]   7.75% [1],[6],[14]
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Spread 6.00% [3],[4],[9]   6.00% [5],[6]
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 10.73% [3],[4]   10.73% [5],[6]
Spread 6.00% [3],[4]   6.00% [5],[6]
Investment, Identifier [Axis]: Jackmont Hospitality, Inc., Preferred Equity      
Schedule of Investments [Line Items]      
Total Rate [5],[19]     12.00%
PIK Rate [5],[19]     12.00%
Investment, Identifier [Axis]: Jackmont Hospitality, Inc., Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 12.23% [3],[4]   12.23% [5],[6]
Spread 7.50% [3],[4]   7.50% [5],[6]
Investment, Identifier [Axis]: Jackmont Hospitality, Inc., Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 12.23% [3],[4]   12.23% [5],[6]
Spread 7.50% [3],[4]   7.50% [5],[6]
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 23.04% [2],[7]   18.00% [1]
Spread [2],[7] 18.00%    
PIK Rate [2],[7] 23.04%    
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 21.08% [2],[7],[13]   19.75% [1],[14]
Spread [2],[7],[13] 16.00%    
PIK Rate 21.08% [2],[7],[13]   19.75% [1],[14]
Investment, Identifier [Axis]: Johnson Downie Opco, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Spread 11.50% [4],[9]   11.50% [6]
Investment, Identifier [Axis]: Johnson Downie Opco, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 16.25% [4]   15.63% [6]
Spread 11.50% [4]   11.50% [6]
Investment, Identifier [Axis]: JorVet Holdings, LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 12.00%   12.00%
Investment, Identifier [Axis]: KMS, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 12.00% [3],[4]   12.00% [5],[6]
Spread 7.25% [3],[4]   7.25% [5],[6]
Investment, Identifier [Axis]: KMS, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 12.00% [3],[4]   12.00% [5],[6]
Spread 7.25% [3],[4]   7.25% [5],[6]
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC, Member Units      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) (18)    
Amount of Interest, Fees or Dividends Credited to Income 7    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 713    
Gross Additions 0    
Gross Reductions 18    
Ending balance 695    
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC, Member Units 1      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss)   0  
Amount of Unrealized Gain/(Loss)   (20)  
Amount of Interest, Fees or Dividends Credited to Income   0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance   3,695  
Gross Additions   0  
Gross Reductions   20  
Ending balance   3,675  
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC, Member Units 2      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss)   0  
Amount of Unrealized Gain/(Loss)   0  
Amount of Interest, Fees or Dividends Credited to Income   7  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance   0  
Gross Additions   0  
Gross Reductions   0  
Ending balance   $ 0  
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC, Preferred Equity      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 0    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 1,800    
Gross Additions 0    
Gross Reductions 0    
Ending balance $ 1,800    
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 12.00% 11.50% 11.50%
Amount of Realized Gain/(Loss) $ 0 $ 0  
Amount of Unrealized Gain/(Loss) 0 0  
Amount of Interest, Fees or Dividends Credited to Income 199 155  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 5,093 5,040  
Gross Additions 53 9  
Gross Reductions 0 0  
Ending balance $ 5,146 $ 5,049  
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 9.00% 9.00% 9.00%
Amount of Realized Gain/(Loss) $ 0 $ 0  
Amount of Unrealized Gain/(Loss) 0 0  
Amount of Interest, Fees or Dividends Credited to Income 22 22  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 961 970  
Gross Additions 0 0  
Gross Reductions 3 3  
Ending balance $ 958 967  
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 12.11% [3],[4],[7]   11.21% [5],[6]
Spread 7.25% [3],[4],[7]   7.25% [5],[6]
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 12.13% [3],[4],[7],[33]   11.67% [5],[6]
Spread 7.25% [3],[4],[7],[33]   7.25% [5],[6]
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 3      
Schedule of Investments [Line Items]      
Total Rate 12.09% [3],[4],[7]   11.67% [5],[6]
Spread 7.25% [3],[4],[7]   7.25% [5],[6]
Investment, Identifier [Axis]: LLFlex, LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 13.75% [3],[4]   12.74% [5],[6]
Spread 9.00% [3],[4]   9.00% [5],[6]
Investment, Identifier [Axis]: Lightbox Holdings, L.P., Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 10.16% [2]   9.73% [1]
Spread 5.00% [2]   5.00% [1]
Investment, Identifier [Axis]: Logix Acquisition Company, LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 10.59% [3],[4]   10.13% [5],[6]
Spread 5.75% [3],[4]   5.75% [5],[6]
Investment, Identifier [Axis]: MB2 Dental Solutions, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 10.72% [2],[4],[7],[8]   10.42% [1],[6]
Spread 6.00% [2],[4],[7],[8]   6.00% [1],[6]
Investment, Identifier [Axis]: MB2 Dental Solutions, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 10.72% [2],[4],[7]   10.42% [1],[6]
Spread 6.00% [2],[4],[7]   6.00% [1],[6]
Investment, Identifier [Axis]: MH Corbin Holding LLC, Preferred Member Units      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss)   0  
Amount of Unrealized Gain/(Loss)   0  
Amount of Interest, Fees or Dividends Credited to Income   0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance   0  
Gross Additions   0  
Gross Reductions   0  
Ending balance   $ 0  
Investment, Identifier [Axis]: MH Corbin Holding LLC, Preferred Member Units 1      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 0    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 0    
Gross Additions 0    
Gross Reductions 0    
Ending balance 0    
Investment, Identifier [Axis]: MH Corbin Holding LLC, Preferred Member Units 2      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 0    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 0    
Gross Additions 0    
Gross Reductions 0    
Ending balance $ 0    
Investment, Identifier [Axis]: MH Corbin Holding LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 13.00% [15] 13.00% 13.00%
Amount of Realized Gain/(Loss) $ 0 $ 0  
Amount of Unrealized Gain/(Loss) 238 (374)  
Amount of Interest, Fees or Dividends Credited to Income 49 68  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 1,137 1,484  
Gross Additions 238 2  
Gross Reductions 29 394  
Ending balance $ 1,346 $ 1,092  
Investment, Identifier [Axis]: Mako Steel, LP, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 12.30% [3],[4]   11.79% [5],[6],[34]
Spread 7.25% [3],[4]   7.25% [5],[6],[34]
Investment, Identifier [Axis]: Mako Steel, LP, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 12.30% [3],[4]   11.09% [5],[6]
Spread 7.25% [3],[4]   7.25% [5],[6]
Investment, Identifier [Axis]: Market Force Information, LLC, Member Units      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 0    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 0    
Gross Additions 0    
Gross Reductions 0    
Ending balance $ 0    
Investment, Identifier [Axis]: Market Force Information, LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 12.00% [13] 12.00% 12.00% [14]
Spread   11.00%  
PIK Rate 12.00% [13]   12.00% [14]
Amount of Realized Gain/(Loss) $ 0 $ 0  
Amount of Unrealized Gain/(Loss) (403) 0  
Amount of Interest, Fees or Dividends Credited to Income 0 3  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 403 2,234  
Gross Additions 0 3  
Gross Reductions 403 0  
Ending balance $ 0 2,237  
Investment, Identifier [Axis]: MetalForming AcquireCo, LLC, Preferred Equity      
Schedule of Investments [Line Items]      
Total Rate 8.00% [17]   8.00% [19]
Spread [19]     8.00%
PIK Rate [17] 8.00%    
Investment, Identifier [Axis]: MetalForming AcquireCo, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 12.75%   12.75%
Investment, Identifier [Axis]: Microbe Formulas, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Spread 6.25% [3],[4],[7],[9]   6.25% [5],[6]
Investment, Identifier [Axis]: Microbe Formulas, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 11.09% [3],[4],[7]   9.86% [5],[6]
Spread 6.25% [3],[4],[7]   6.25% [5],[6]
Investment, Identifier [Axis]: Mills Fleet Farm Group, LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 11.08% [3],[4]   10.66% [5],[6]
Spread 6.25% [3],[4]   6.25% [5],[6]
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate [3],[4],[35],[36] 12.11%    
Spread 7.00% [3],[4],[35],[36]   7.00% [5],[6],[37],[38]
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 11.73% [3],[4],[35],[36]   11.73% [5],[6],[37],[38]
Spread 7.00% [3],[4],[35],[36]   7.00% [5],[6],[37],[38]
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Secured Debt 3      
Schedule of Investments [Line Items]      
Total Rate 11.73% [3],[4],[35],[36]   11.73% [5],[6],[37],[38]
Spread 7.00% [3],[4],[35],[36]   7.00% [5],[6],[37],[38]
Investment, Identifier [Axis]: Mystic Logistics Holdings, LLC, Common Stock      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) $ 0 0  
Amount of Unrealized Gain/(Loss) 545 555  
Amount of Interest, Fees or Dividends Credited to Income 248 142  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 5,708 2,210  
Gross Additions 545 554  
Gross Reductions 0 0  
Ending balance 6,253 $ 2,764  
Investment, Identifier [Axis]: Mystic Logistics Holdings, LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate   10.00%  
Amount of Realized Gain/(Loss)   $ 0  
Amount of Unrealized Gain/(Loss)   0  
Amount of Interest, Fees or Dividends Credited to Income   39  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance   1,595  
Gross Additions   0  
Gross Reductions   71  
Ending balance   1,524  
Investment, Identifier [Axis]: Mystic Logistics Holdings, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 0    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 0    
Gross Additions 0    
Gross Reductions 0    
Ending balance $ 0    
Investment, Identifier [Axis]: Mystic Logistics Holdings, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 10.00%   10.00%
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 36    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 1,436    
Gross Additions 0    
Gross Reductions 0    
Ending balance $ 1,436    
Investment, Identifier [Axis]: NTM Acquisition Corp., Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 13.30% [2],[4],[7]   9.50% [1],[6]
Spread 7.25% [2],[4],[7]   6.25% [1],[6]
PIK Rate 1.00% [2],[4],[7]   1.00% [1],[6]
Investment, Identifier [Axis]: NWN Corporation, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 12.85% [3],[4],[7],[39]   10.85% [5],[6],[40]
Spread 8.00% [3],[4],[7],[39]   8.00% [5],[6],[40]
Investment, Identifier [Axis]: NWN Corporation, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 12.87% [3],[4],[7]   12.56% [5],[6]
Spread 8.00% [3],[4],[7]   8.00% [5],[6]
Investment, Identifier [Axis]: NWN Corporation, Secured Debt 3      
Schedule of Investments [Line Items]      
Total Rate 20.00% [3]   20.00% [5]
PIK Rate 20.00% [3]   20.00% [5]
Investment, Identifier [Axis]: NexRev LLC, Preferred Member Units      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) $ 0 0  
Amount of Unrealized Gain/(Loss) 470 0  
Amount of Interest, Fees or Dividends Credited to Income 33 5  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 280 670  
Gross Additions 470 0  
Gross Reductions 0 0  
Ending balance 750 $ 670  
Investment, Identifier [Axis]: NexRev LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate   11.00%  
Amount of Realized Gain/(Loss)   $ 0  
Amount of Unrealized Gain/(Loss)   0  
Amount of Interest, Fees or Dividends Credited to Income   215  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance   3,510  
Gross Additions   6  
Gross Reductions   54  
Ending balance   3,462  
Investment, Identifier [Axis]: NexRev LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 0    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 0    
Gross Additions 0    
Gross Reductions 0    
Ending balance $ 0    
Investment, Identifier [Axis]: NexRev LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 11.00%   11.00%
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) 249    
Amount of Interest, Fees or Dividends Credited to Income 81    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 2,119    
Gross Additions 255    
Gross Reductions 157    
Ending balance $ 2,217    
Investment, Identifier [Axis]: NinjaTrader, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Spread 6.25% [3],[4],[9]   6.25% [5],[6]
Investment, Identifier [Axis]: NinjaTrader, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Spread 6.25% [3],[4],[9]   6.25% [5],[6]
Investment, Identifier [Axis]: NinjaTrader, LLC, Secured Debt 3      
Schedule of Investments [Line Items]      
Total Rate 11.00% [3],[4]   9.99% [5],[6]
Spread 6.25% [3],[4]   6.25% [5],[6]
Investment, Identifier [Axis]: NuStep, LLC, Preferred Member Units      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss)   0  
Amount of Unrealized Gain/(Loss)   0  
Amount of Interest, Fees or Dividends Credited to Income   0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance   3,380  
Gross Additions   0  
Gross Reductions   1  
Ending balance   $ 3,379  
Investment, Identifier [Axis]: NuStep, LLC, Preferred Member Units 1      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) (100)    
Amount of Interest, Fees or Dividends Credited to Income 0    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 2,010    
Gross Additions 0    
Gross Reductions 100    
Ending balance 1,910    
Investment, Identifier [Axis]: NuStep, LLC, Preferred Member Units 2      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 0    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 1,290    
Gross Additions 0    
Gross Reductions 0    
Ending balance $ 1,290    
Investment, Identifier [Axis]: NuStep, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 11.25% [4] 7.50% 10.63% [6]
Spread 6.50% [4] 6.50% 6.50% [6]
Amount of Realized Gain/(Loss) $ 0 $ 0  
Amount of Unrealized Gain/(Loss) 0 1  
Amount of Interest, Fees or Dividends Credited to Income 31 11  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 1,100 430  
Gross Additions 0 300  
Gross Reductions 0 0  
Ending balance $ 1,100 $ 730  
Investment, Identifier [Axis]: NuStep, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 12.00% 12.00% 12.00%
Amount of Realized Gain/(Loss) $ 0 $ 0  
Amount of Unrealized Gain/(Loss) 0 0  
Amount of Interest, Fees or Dividends Credited to Income 139 126  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 4,603 4,310  
Gross Additions 1 0  
Gross Reductions 0 0  
Ending balance $ 4,604 4,310  
Investment, Identifier [Axis]: OVG Business Services, LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 10.89% [3],[4]   10.64% [5],[6]
Spread 6.25% [3],[4]   6.25% [5],[6]
Investment, Identifier [Axis]: Oneliance, LLC, Preferred Stock      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) $ 0 0  
Amount of Unrealized Gain/(Loss) 0 0  
Amount of Interest, Fees or Dividends Credited to Income 0 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 264 264  
Gross Additions 0 0  
Gross Reductions 0 0  
Ending balance $ 264 $ 264  
Investment, Identifier [Axis]: Oneliance, LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 15.75% [4] 12.00% 15.13% [6]
Spread 11.00% [4] 11.00% 11.00% [6]
Amount of Realized Gain/(Loss) $ 0 $ 0  
Amount of Unrealized Gain/(Loss) 0 0  
Amount of Interest, Fees or Dividends Credited to Income 56 44  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 1,380 1,374  
Gross Additions 2 1  
Gross Reductions 21 0  
Ending balance 1,361 1,375  
Investment, Identifier [Axis]: Orttech Holdings, LLC, Preferred Stock      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) 0 0  
Amount of Unrealized Gain/(Loss) 430 0  
Amount of Interest, Fees or Dividends Credited to Income 67 48  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 2,940 2,500  
Gross Additions 430 0  
Gross Reductions 0 0  
Ending balance $ 3,370 $ 2,500  
Investment, Identifier [Axis]: Orttech Holdings, LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate   12.00%  
Spread   11.00%  
Amount of Realized Gain/(Loss)   $ 0  
Amount of Unrealized Gain/(Loss)   0  
Amount of Interest, Fees or Dividends Credited to Income   189  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance   5,978  
Gross Additions   6  
Gross Reductions   0  
Ending balance   5,984  
Investment, Identifier [Axis]: Orttech Holdings, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Spread 11.00% [4],[9]   11.00% [6]
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 0    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance (2)    
Gross Additions 0    
Gross Reductions 0    
Ending balance $ (2)    
Investment, Identifier [Axis]: Orttech Holdings, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 15.75% [4]   15.13% [6]
Spread 11.00% [4]   11.00% [6]
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 236    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 5,814    
Gross Additions 9    
Gross Reductions 200    
Ending balance 5,623    
Investment, Identifier [Axis]: Other Amounts related to investments transferred to or from other 1940 Act classification during the period, Affiliate Investments      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) 0 0  
Amount of Unrealized Gain/(Loss) 0 0  
Amount of Interest, Fees or Dividends Credited to Income (71) 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance (6,392) 0  
Gross Additions (175) 0  
Gross Reductions (6,567) 0  
Ending balance 0 0  
Investment, Identifier [Axis]: Other Amounts related to investments transferred to or from other 1940 Act classification during the period, Control Investments      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) 0 0  
Amount of Unrealized Gain/(Loss) 0 0  
Amount of Interest, Fees or Dividends Credited to Income 0 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 0 0  
Gross Additions 0 0  
Gross Reductions 0 0  
Ending balance $ 0 0  
Investment, Identifier [Axis]: PTL US Bidco, Inc, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate [3],[4],[36] 14.25%    
Spread 6.25% [3],[4],[36]   7.25% [6],[38]
Investment, Identifier [Axis]: PTL US Bidco, Inc, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 12.32% [3],[4],[7],[36]   11.80% [6],[38]
Spread 7.25% [3],[4],[7],[36]   7.25% [6],[38]
Investment, Identifier [Axis]: Paragon Healthcare, Inc., Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 10.70% [3],[4],[7]   10.26% [5],[6]
Spread 5.75% [3],[4],[7]   5.75% [5],[6]
Investment, Identifier [Axis]: Paragon Healthcare, Inc., Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 10.78% [3],[4],[7]   9.96% [5],[6],[41]
Spread 5.75% [3],[4],[7]   5.75% [5],[6],[41]
Investment, Identifier [Axis]: Paragon Healthcare, Inc., Secured Debt 3      
Schedule of Investments [Line Items]      
Total Rate 10.48% [3],[4],[7]   9.81% [5],[6]
Spread 5.75% [3],[4],[7]   5.75% [5],[6]
Investment, Identifier [Axis]: RA Outdoors LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate [3],[4],[7] 11.47%    
Spread [3],[4],[7] 6.75%    
Investment, Identifier [Axis]: RA Outdoors LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate [3],[4],[7] 11.63%    
Spread [3],[4],[7] 6.75%    
Investment, Identifier [Axis]: RA Outdoors LLC, Secured Debt 3      
Schedule of Investments [Line Items]      
Spread [5],[6]     6.75%
Investment, Identifier [Axis]: RA Outdoors LLC, Secured Debt 4      
Schedule of Investments [Line Items]      
Total Rate [5],[6]     10.56%
Spread [5],[6]     6.75%
Investment, Identifier [Axis]: Research Now Group, Inc. and Survey Sampling International, LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate [2],[4] 10.31%    
Spread [2],[4] 5.50%    
Investment, Identifier [Axis]: Research Now Group, Inc. and Survey Sampling International, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate [1],[6]     8.84%
Spread [1],[6]     5.50%
Investment, Identifier [Axis]: Robbins Bros. Jewelry, Inc., Preferred Equity      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) $ 0 0  
Amount of Unrealized Gain/(Loss) (550) 0  
Amount of Interest, Fees or Dividends Credited to Income 0 16  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 1,650 0  
Gross Additions 0 1,230  
Gross Reductions 550 0  
Ending balance 1,100 $ 1,230  
Investment, Identifier [Axis]: Robbins Bros. Jewelry, Inc., Secured Debt      
Schedule of Investments [Line Items]      
Total Rate   12.00%  
Spread   11.00%  
Amount of Realized Gain/(Loss)   $ 0  
Amount of Unrealized Gain/(Loss)   0  
Amount of Interest, Fees or Dividends Credited to Income   126  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance   0  
Gross Additions   3,955  
Gross Reductions   0  
Ending balance   3,955  
Investment, Identifier [Axis]: Robbins Bros. Jewelry, Inc., Secured Debt 1      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 1    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance (8)    
Gross Additions 1    
Gross Reductions 0    
Ending balance $ (7)    
Investment, Identifier [Axis]: Robbins Bros. Jewelry, Inc., Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 12.50%   12.50% [6]
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 127    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 3,902    
Gross Additions 4    
Gross Reductions 24    
Ending balance $ 3,882    
Investment, Identifier [Axis]: Roof Opco, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate [5],[6]     10.97%
Spread 6.50% [3],[4],[7],[9]   6.50% [5],[6]
Investment, Identifier [Axis]: Roof Opco, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 11.35% [3],[4],[7]   10.32% [5],[6]
Spread 6.50% [3],[4],[7]   6.50% [5],[6]
Investment, Identifier [Axis]: Roof Opco, LLC, Secured Debt 3      
Schedule of Investments [Line Items]      
Total Rate 11.35% [3],[4],[7]   10.32% [5],[6]
Spread 6.50% [3],[4],[7]   6.50% [5],[6]
Investment, Identifier [Axis]: Rug Doctor, LLC., Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 13.02% [3],[4],[7]   13.02% [5],[6]
Spread 6.25% [3],[4],[7]   6.25% [5],[6]
PIK Rate 2.00% [3],[4],[7]   2.00% [5],[6]
Investment, Identifier [Axis]: Rug Doctor, LLC., Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 13.02% [3],[4],[7]   13.02% [5],[6]
Spread 6.25% [3],[4],[7]   6.25% [5],[6]
PIK Rate 2.00% [3],[4],[7]   2.00% [5],[6]
Investment, Identifier [Axis]: SI East, LLC (Stavig), Preferred Member Units      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss)   0  
Amount of Unrealized Gain/(Loss)   320  
Amount of Interest, Fees or Dividends Credited to Income   30  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance   3,860  
Gross Additions   320  
Gross Reductions   0  
Ending balance   $ 4,180  
Investment, Identifier [Axis]: SI East, LLC (Stavig), Secured Debt      
Schedule of Investments [Line Items]      
Total Rate   10.25%  
Amount of Realized Gain/(Loss)   $ 0  
Amount of Unrealized Gain/(Loss)   106  
Amount of Interest, Fees or Dividends Credited to Income   569  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance   21,950  
Gross Additions   0  
Gross Reductions   102  
Ending balance   21,848  
Investment, Identifier [Axis]: SI East, LLC, Preferred Member Units      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 114    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 4,550    
Gross Additions 0    
Gross Reductions 0    
Ending balance 4,550    
Investment, Identifier [Axis]: SI East, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 2    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 0    
Gross Additions 0    
Gross Reductions 0    
Ending balance $ 0    
Investment, Identifier [Axis]: SI East, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 9.50%   9.50%
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) (55)    
Amount of Interest, Fees or Dividends Credited to Income 755    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 29,929    
Gross Additions 55    
Gross Reductions 1,805    
Ending balance $ 28,179    
Investment, Identifier [Axis]: SIB Holdings, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 11.21% [3],[4]   11.01% [5],[6]
Spread 6.25% [3],[4]   6.25% [5],[6]
Investment, Identifier [Axis]: SIB Holdings, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 11.21% [3],[4]   11.01% [5],[6]
Spread 6.25% [3],[4]   6.25% [5],[6]
Investment, Identifier [Axis]: SIB Holdings, LLC, Secured Debt 3      
Schedule of Investments [Line Items]      
Total Rate 11.21% [3],[4]   11.01% [5],[6]
Spread 6.25% [3],[4]   6.25% [5],[6]
Investment, Identifier [Axis]: SPAU Holdings, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Spread 7.50% [3],[4],[7],[9]   7.50% [5],[6]
Investment, Identifier [Axis]: SPAU Holdings, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 12.23% [3],[4],[7]   11.06% [5],[6]
Spread 7.50% [3],[4],[7]   7.50% [5],[6]
Investment, Identifier [Axis]: Savers, Inc., Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 10.34% [2],[4],[7]   10.34% [1],[6]
Spread 5.50% [2],[4],[7]   5.50% [1],[6]
Investment, Identifier [Axis]: Slick Innovations, LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 14.00%   14.00%
Investment, Identifier [Axis]: Sonic Systems International, LLC, Common Stock      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) $ 0 0  
Amount of Unrealized Gain/(Loss) (60) (70)  
Amount of Interest, Fees or Dividends Credited to Income 13 13  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 1,490 1,250  
Gross Additions 0 0  
Gross Reductions 60 70  
Ending balance $ 1,430 $ 1,180  
Investment, Identifier [Axis]: Sonic Systems International, LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 12.26% [3],[4] 8.50% 11.24% [5],[6]
Spread 7.50% [3],[4] 7.50% 7.50% [5],[6]
Amount of Realized Gain/(Loss) $ 0 $ 0  
Amount of Unrealized Gain/(Loss) (19) 0  
Amount of Interest, Fees or Dividends Credited to Income 583 312  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 18,425 13,738  
Gross Additions 19 14  
Gross Reductions 19 0  
Ending balance $ 18,425 13,752  
Investment, Identifier [Axis]: South Coast Terminals Holdings, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Spread 5.25% [3],[4],[9]   5.75% [5],[6]
Investment, Identifier [Axis]: South Coast Terminals Holdings, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 10.03% [3],[4]   9.69% [5],[6]
Spread 5.25% [3],[4]   5.75% [5],[6]
Investment, Identifier [Axis]: Student Resource Center, LLC, Preferred Equity      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 0    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 0    
Gross Additions 0    
Gross Reductions 0    
Ending balance $ 0    
Investment, Identifier [Axis]: Student Resource Center, LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 13.69% [3]   13.27% [5]
Spread 8.50% [3]   8.50% [5]
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 118    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 5,063    
Gross Additions 0    
Gross Reductions 0    
Ending balance 5,063    
Investment, Identifier [Axis]: Tedder Industries, LLC, Preferred Member Units      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss)   0  
Amount of Unrealized Gain/(Loss)   0  
Amount of Interest, Fees or Dividends Credited to Income   0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance   2,145  
Gross Additions   0  
Gross Reductions   0  
Ending balance   $ 2,145  
Investment, Identifier [Axis]: Tedder Industries, LLC, Preferred Member Units 1      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) 0    
Amount of Unrealized Gain/(Loss) (202)    
Amount of Interest, Fees or Dividends Credited to Income 0    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 1,920    
Gross Additions 0    
Gross Reductions 202    
Ending balance 1,718    
Investment, Identifier [Axis]: Tedder Industries, LLC, Preferred Member Units 2      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) 0    
Amount of Unrealized Gain/(Loss) 28    
Amount of Interest, Fees or Dividends Credited to Income 0    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 0    
Gross Additions 83    
Gross Reductions 0    
Ending balance $ 83    
Investment, Identifier [Axis]: Tedder Industries, LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate   12.00%  
Amount of Realized Gain/(Loss)   $ 0  
Amount of Unrealized Gain/(Loss)   0  
Amount of Interest, Fees or Dividends Credited to Income   142  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance   4,013  
Gross Additions   157  
Gross Reductions   0  
Ending balance   $ 4,170  
Investment, Identifier [Axis]: Tedder Industries, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 12.00%   12.00%
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 14    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 460    
Gross Additions 0    
Gross Reductions 0    
Ending balance $ 460    
Investment, Identifier [Axis]: Tedder Industries, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 12.00%   12.00%
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 115    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 3,780    
Gross Additions 1    
Gross Reductions 0    
Ending balance $ 3,781    
Investment, Identifier [Axis]: The Affiliati Network, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate     13.00%
Investment, Identifier [Axis]: The Affiliati Network, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 12.00%   13.00%
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC, Common Stock      
Schedule of Investments [Line Items]      
Total Rate   12.00%  
Amount of Realized Gain/(Loss) $ 0 $ 0  
Amount of Unrealized Gain/(Loss) 380 0  
Amount of Interest, Fees or Dividends Credited to Income 7 7  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 1,950 2,160  
Gross Additions 380 0  
Gross Reductions 0 0  
Ending balance 2,330 2,160  
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC, Secured Debt      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss)   0  
Amount of Unrealized Gain/(Loss)   0  
Amount of Interest, Fees or Dividends Credited to Income   71  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance   2,174  
Gross Additions   11  
Gross Reductions   105  
Ending balance   2,080  
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) 0    
Amount of Unrealized Gain/(Loss) (1)    
Amount of Interest, Fees or Dividends Credited to Income 1    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 0    
Gross Additions 1    
Gross Reductions 1    
Ending balance $ 0    
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 12.00%   12.00%
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) (3)    
Amount of Interest, Fees or Dividends Credited to Income 63    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 1,980    
Gross Additions 3    
Gross Reductions 3    
Ending balance $ 1,980    
Investment, Identifier [Axis]: U.S. TelePacific Corp., Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 13.16% [2],[4],[7]   11.57% [1],[6]
Spread 8.40% [2],[4],[7]   1.25% [1],[6]
PIK Rate 7.25% [2],[4],[7]   7.25% [1],[6]
Investment, Identifier [Axis]: US Bank Money Market      
Schedule of Investments [Line Items]      
Total Rate 0.005%    
Investment, Identifier [Axis]: US Bank Money Market Account      
Schedule of Investments [Line Items]      
Total Rate     0.005%
Investment, Identifier [Axis]: USA DeBusk LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 10.38% [3],[4]   9.82% [5],[6]
Spread 5.75% [3],[4]   5.75% [5],[6]
Investment, Identifier [Axis]: UserZoom Technologies, Inc., Secured Debt      
Schedule of Investments [Line Items]      
Total Rate [3],[4],[7] 12.13%    
Spread [3],[4],[7] 7.50%    
Investment, Identifier [Axis]: VVS Holdco LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Spread 6.00% [9],[18]   6.00% [6],[20]
Investment, Identifier [Axis]: VVS Holdco LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 11.50% [18]   11.50% [20]
Investment, Identifier [Axis]: VVS Holdco, LLC, Preferred Equity      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) $ 0 0  
Amount of Unrealized Gain/(Loss) 20 0  
Amount of Interest, Fees or Dividends Credited to Income 9 38  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 2,990 2,960  
Gross Additions 20 0  
Gross Reductions 0 0  
Ending balance $ 3,010 $ 2,960  
Investment, Identifier [Axis]: VVS Holdco, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate   11.50%  
Spread 6.00%    
Amount of Realized Gain/(Loss) $ 0 $ 0  
Amount of Unrealized Gain/(Loss) 0 0  
Amount of Interest, Fees or Dividends Credited to Income 2 230  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance (5) 7,375  
Gross Additions 1 11  
Gross Reductions 1 0  
Ending balance $ (5) $ 7,386  
Investment, Identifier [Axis]: VVS Holdco, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 11.50% 7.00%  
Spread   6.00%  
Amount of Realized Gain/(Loss) $ 0 $ 0  
Amount of Unrealized Gain/(Loss) 0 0  
Amount of Interest, Fees or Dividends Credited to Income 230 5  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 7,421 292  
Gross Additions 11 0  
Gross Reductions 0 99  
Ending balance $ 7,432 $ 193  
Investment, Identifier [Axis]: Vida Capital, Inc, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 10.63% [2]   10.38% [1]
Spread 6.00% [2]   6.00% [1]
Investment, Identifier [Axis]: Volusion, LLC, Common Stock      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) (1,104)    
Amount of Interest, Fees or Dividends Credited to Income 0    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 0    
Gross Additions 1,104    
Gross Reductions 1,104    
Ending balance 0    
Investment, Identifier [Axis]: Volusion, LLC, Preferred Member Units 1      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 0    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 0    
Gross Additions 0    
Gross Reductions 0    
Ending balance 0    
Investment, Identifier [Axis]: Volusion, LLC, Preferred Member Units 2      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 0    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 0    
Gross Additions 4,906    
Gross Reductions 0    
Ending balance 4,906    
Investment, Identifier [Axis]: Volusion, LLC, Preferred Member Units 3      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 0    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 0    
Gross Additions 0    
Gross Reductions 0    
Ending balance $ 0    
Investment, Identifier [Axis]: Volusion, LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 10.00%   11.50% [16]
Investment, Identifier [Axis]: Volusion, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 10.00%    
Amount of Realized Gain/(Loss) $ 0    
Amount of Unrealized Gain/(Loss) 0    
Amount of Interest, Fees or Dividends Credited to Income 0    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 0    
Gross Additions 900    
Gross Reductions 0    
Ending balance 900    
Investment, Identifier [Axis]: Volusion, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) (1,366)    
Amount of Unrealized Gain/(Loss) 780    
Amount of Interest, Fees or Dividends Credited to Income 71    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 6,392    
Gross Additions 0    
Gross Reductions 6,392    
Ending balance 0    
Investment, Identifier [Axis]: Volusion, LLC, Unsecured Convertible Debt      
Schedule of Investments [Line Items]      
Total Rate     8.00%
Amount of Realized Gain/(Loss) (175)    
Amount of Unrealized Gain/(Loss) 175    
Amount of Interest, Fees or Dividends Credited to Income 0    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 0    
Gross Additions 175    
Gross Reductions 175    
Ending balance 0    
Investment, Identifier [Axis]: Volusion, LLC, Warrants      
Schedule of Investments [Line Items]      
Amount of Realized Gain/(Loss) 0    
Amount of Unrealized Gain/(Loss) 1,104    
Amount of Interest, Fees or Dividends Credited to Income 0    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]      
Beginning balance 0    
Gross Additions 0    
Gross Reductions 0    
Ending balance $ 0    
Investment, Identifier [Axis]: Wall Street Prep, Inc., Secured Debt 1      
Schedule of Investments [Line Items]      
Spread 7.00% [3],[4],[9]   7.00% [5],[6]
Investment, Identifier [Axis]: Wall Street Prep, Inc., Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 11.75% [3],[4]   10.74% [5],[6]
Spread 7.00% [3],[4]   7.00% [5],[6]
Investment, Identifier [Axis]: Watterson Brands, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 11.07% [3],[4],[42]   10.73% [5],[6]
Spread 6.25% [3],[4],[42]   6.00% [5],[6]
Investment, Identifier [Axis]: Watterson Brands, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 10.98% [3],[4]   10.73% [5],[6]
Spread 6.00% [3],[4]   6.00% [5],[6]
Investment, Identifier [Axis]: Watterson Brands, LLC, Secured Debt 3      
Schedule of Investments [Line Items]      
Total Rate 10.98% [3],[4]   10.73% [5],[6]
Spread 6.25% [3],[4]   6.00% [5],[6]
Investment, Identifier [Axis]: West Star Aviation Acquisition, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Spread 6.00% [3],[4],[7],[9]   6.00% [5],[6]
Investment, Identifier [Axis]: West Star Aviation Acquisition, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 10.79% [3],[4],[7]   8.59% [5],[6]
Spread 6.00% [3],[4],[7]   6.00% [5],[6]
Investment, Identifier [Axis]: Winter Services LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Spread 7.00% [3],[4],[9]   7.00% [5],[6]
Investment, Identifier [Axis]: Winter Services LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Spread 7.00% [3],[4],[9]   7.00% [5],[6]
Investment, Identifier [Axis]: Winter Services LLC, Secured Debt 3      
Schedule of Investments [Line Items]      
Total Rate 11.75% [3],[4]   10.74% [5],[6]
Spread 7.00% [3],[4]   7.00% [5],[6]
Investment, Identifier [Axis]: World Micro Holdings, LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 13.00%   13.00%
Investment, Identifier [Axis]: Xenon Arc, Inc., Secured Debt      
Schedule of Investments [Line Items]      
Total Rate [3] 10.35%    
Spread [3] 5.25%    
Investment, Identifier [Axis]: Xenon Arc, Inc., Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate [3] 9.92%    
Spread 5.25% [3]   5.25% [5]
Investment, Identifier [Axis]: Xenon Arc, Inc., Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 10.34% [3]   10.84% [5]
Spread 5.25% [3]   5.25% [5]
Investment, Identifier [Axis]: Xenon Arc, Inc., Secured Debt 3      
Schedule of Investments [Line Items]      
Total Rate [5]     8.63%
Spread [5]     5.25%
Investment, Identifier [Axis]: YS Garments, LLC, Secured Debt      
Schedule of Investments [Line Items]      
Total Rate 14.50% [2],[4]   9.51% [1],[6]
Spread 6.00% [2],[4]   5.50% [1],[6]
Investment, Identifier [Axis]: Zips Car Wash, LLC, Secured Debt 1      
Schedule of Investments [Line Items]      
Total Rate 12.15% [3],[4],[7],[33]   11.67% [5],[6]
Spread 7.25% [3],[4],[7],[33]   7.25% [5],[6]
Investment, Identifier [Axis]: Zips Car Wash, LLC, Secured Debt 2      
Schedule of Investments [Line Items]      
Total Rate 12.12% [3],[4],[7],[33]   11.67% [5],[6],[43]
Spread 7.25% [3],[4],[7],[33]   7.25% [5],[6],[43]
[1] Middle Market portfolio investment. See Note C—Fair Value Hierarchy for Investments—Portfolio Composition for a description of Middle Market portfolio investments.
[2] Middle Market portfolio investment. See Note C—Fair Value Hierarchy for Investments—Portfolio Composition for a description of Middle Market portfolio investments.
[3] Private Loan portfolio investment. See Note C—Fair Value Hierarchy for Investments—Portfolio Composition for a description of Private Loan portfolio investments.
[4] Index based floating interest rate is subject to contractual minimum interest rate. As noted in this schedule, 93% of the loans (based on the par amount) contain LIBOR or Term SOFR (“SOFR”) floors which range between 0.75% and 2.00%, with a weighted-average floor of 1.05%.
[5] Private Loan portfolio investment. See Note C—Fair Value Hierarchy for Investments—Portfolio Composition for a description of Private Loan portfolio investments.
[6] Index based floating interest rate is subject to contractual minimum interest rate. As noted in this schedule, 93% of the loans (based on the par amount) contain LIBOR floors which range between 0.50% and 2.00%, with a weighted-average LIBOR floor of 1.04%.
[7] A majority of the variable rate loans in the Company’s investment portfolio bear interest at a rate that may be determined by reference to either LIBOR (“L”), SOFR (“SF”) or an alternate base rate (commonly based on the Federal Funds Rate or the Prime rate (“P”)), which typically resets every one, three, or six months at the borrower’s option. SOFR based contracts may include a credit spread adjustment (the “Adjustment”) that is charged in addition to the stated spread. The Adjustment is applied when the SOFR rate, plus the Adjustment, exceeds the stated floor rate, as applicable. As of March 31, 2023, SOFR based contracts in the portfolio had Adjustments ranging from 0.10% to 0.26%.
[8] As of March 31, 2023, borrowings under the loan facility bear interest at SOFR+6.00% (Floor 1.00%). Each new draw of funding on the delayed draw term loan facility has a different floating rate reset date. The rate presented represents a weighted-average rate for borrowings under the facility, as of March 31, 2023.
[9] The position is unfunded and no interest income is being earned as of March 31, 2023. The position may earn a nominal unused facility fee on committed amounts.
[10] Index based floating interest rate is subject to contractual maximum base rate of 3.50%
[11] Index based floating interest rate is subject to contractual maximum base rate of 2.50%.
[12] Index based floating interest rate is subject to contractual maximum base rate of 2.50%.
[13] Non-accrual and non-income producing investment.
[14] Non-accrual and non-income producing investment.
[15] Maturity date is under on-going negotiations with the portfolio company and other lenders, if applicable.
[16] Maturity date is under on-going negotiations with the portfolio company and other lenders, if applicable.
[17] Income producing through dividends or distributions.
[18] Shares/Units represent ownership in a related Real Estate or HoldCo entity.
[19] Income producing through dividends or distributions.
[20] Shares/Units represent ownership in a related Real Estate or HoldCo entity.
[21] The security has an effective contractual interest rate of 2.00% PIK + LIBOR+6.50%, Floor 1.00%,but the issuer may, in its discretion, elect to pay the PIK interest in cash. The rate presented represents the effective current yield based on actual payments received during the period.
[22] As of March 31, 2023, borrowings under the loan facility bear interest at SOFR+6.25% (Floor 1.00%). Each new draw or funding on the facility has a different floating rate reset date. The rate presented represents a weighted-average rate for borrowings under the facility, as of March 31, 2023.
[23] As of December 31, 2022, borrowings under the loan facility bore interest at SOFR+6.25% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022.
[24] As of December 31, 2022, borrowings under the loan facility bore interest at SOFR+6.25% (Floor 1.00%). Due to an amendment and subsequent funding during the quarter, the term loan facility has different floating rate reset dates. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022.
[25] As of March 31, 2023, borrowings under the loan facility bore interest at LIBOR+7.50% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of March 31, 2023.
[26] As of December 31, 2022, borrowings under the loan facility bore interest at LIBOR+8.00% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022.
[27] As of March 31, 2023, borrowings under the loan facility bore interest at SOFR+7.50% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of March 31, 2023.
[28] Index based floating interest rate is subject to contractual maximum base rate of 3.00%.
[29] As of December 31, 2022, borrowings under the loan facility bore interest at SOFR+5.75% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022.
[30] Investment date represents the date of initial investment in the security position.
[31] As of December 31, 2022, borrowings under the loan facility bore interest at LIBOR+10.00%. RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022.
[32] As of March 31, 2023, borrowings under the loan facility bore interest at LIBOR+6.50% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of March 31, 2023.
[33] As of March 31, 2023, borrowings under the loan facility bear interest at SOFR+7.25% (Floor 1.00%). Each new draw or funding on the facility has a different floating rate reset date. The rate presented represents a weighted-average rate for borrowings under the facility, as of March 31, 2023.
[34] As of December 31, 2022, borrowings under the loan facility bore interest at LIBOR+7.25% (Floor 0.75%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022.
[35] Effective yield as of March 31, 2023 was approximately 0.005% on the US Bank Money Market Account.
[36] Investment is not a qualifying asset as defined 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.
[37] Effective yield as of December 31, 2022 was approximately 0.005% on the US Bank Money Market Account.
[38] Investment is not a qualifying asset as defined 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.
[39] As of March 31, 2023, borrowings under the loan facility bore interest at SOFR+8.00% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of March 31, 2023.
[40] As of December 31, 2022, borrowings under the loan facility bore interest at SOFR+ 8.00% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022.
[41] As of December 31, 2022, borrowings under the loan facility bore interest at SOFR+5.75% (Floor 1.00%). Delayed draw term loan facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022.
[42] As of March 31, 2023, borrowings under the loan facility bore interest at LIBOR+6.25% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of March 31, 2023.
[43] As of December 31, 2022, borrowings under the loan facility bore interest at SOFR+7.25% (Floor 1.00%). Each new draw on the delayed draw term loan facility has a different floating rate reset date. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022.