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Investments - Summary of Details Investments in Affiliates (Details) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance     $ 467,865,000    
Fair Value, Ending Balance $ 444,370,000   444,370,000   $ 467,865,000
Total dividend income 1,800,000 $ 2,329,000 3,453,000 $ 4,788,000  
Investment, Identifier [Axis]: Controlled investments Flight Lease VII Industry Classification - Aerospace and Defense          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [1],[2],[3]       242,000 242,000
Purchases/ (sales) of or Advances/ (Distributions) [1],[2],[3]         (248,000)
Net Change in Unrealized Gain/(Loss) [1],[2],[3]         39,000
Realized Gain/(Loss) [1],[2],[3]         (33,000)
Investment, Identifier [Axis]: Controlled investments KCAP Freedom 3, LLC Industry Classification - Joint Venture          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [2],[4]     14,275,000 18,668,000 18,668,000
Net Change in Unrealized Gain/(Loss) [2],[4]         (4,393,000)
Fair Value, Ending Balance [2],[4]         14,275,000
Principal [2],[4]         27,220,000
Total dividend income [2],[4]         2,184,000
Investment, Identifier [Axis]: Controlled investments KCAP Freedom 3, LLC Type of Investment Joint Ventures Industry Classification - Joint Venture          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [5],[6]     14,275,000    
Purchases/ (sales) of or Advances/ (Distributions) [5],[6]     (969,000)    
Net Change in Unrealized Gain/(Loss) [5],[6]     241,000    
Fair Value, Ending Balance [5],[6] 13,547,000   13,547,000   14,275,000
Principal [5],[6] 27,220   27,220    
Investment, Identifier [Axis]: Controlled investments ProAir Holdco, LLC Type of Investment Common Stock and Membership Units Industry Classification - Capital Equipment          
Summary of Investment Holdings [Line Items]          
Principal [5],[7] 2,749,997   2,749,997    
Investment, Identifier [Axis]: Controlled investments ProAir, LLC Industry Classification - Capital Equipment One          
Summary of Investment Holdings [Line Items]          
Principal [2],[3]         2,749,997,000
Investment, Identifier [Axis]: Controlled investments ProAir, LLC Industry Classification - Capital Equipment Two          
Summary of Investment Holdings [Line Items]          
Principal [2]         2,020,000
Investment, Identifier [Axis]: Controlled investments Tank Partners Equipment Holdings, LLC - Class A Units Industry Classification - Energy: Oil & Gas          
Summary of Investment Holdings [Line Items]          
Principal [2],[3]         49,000,000
Investment, Identifier [Axis]: Controlled investments Tank Partners Equipment Holdings, LLC - Class A Units Type of Investment Common Stock and Membership Units Industry Classification - Energy: Oil & Gas          
Summary of Investment Holdings [Line Items]          
Net Change in Unrealized Gain/(Loss) [5],[7]     6,228,000    
Realized Gain/(Loss) [5],[7]     (6,228,000)    
Investment, Identifier [Axis]: Controlled investments Tank Partners Equipment Holdings, LLC Industry Classification - Energy: Oil & Gas One          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [2]     43,000 43,000 43,000
Fair Value, Ending Balance [2]         43,000
Principal [2]         511,000
Investment, Identifier [Axis]: Controlled investments Tank Partners Equipment Holdings, LLC Type of Investment Subordinated Debt Industry Classification - Energy: Oil & Gas          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [5]     43,000    
Net Change in Unrealized Gain/(Loss) [5]     373,000    
Realized Gain/(Loss) [5]     (416,000)    
Fair Value, Ending Balance [5]         43,000
Investment, Identifier [Axis]: Investments          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance     467,865,000    
Fair Value, Ending Balance 444,370,000   444,370,000   467,865,000
Investment, Identifier [Axis]: Investments in Affiliate Portfolio Companies          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance     55,222,000    
Fair Value, Ending Balance 60,464,000   60,464,000   55,222,000
Investment, Identifier [Axis]: Investments in Affiliate Portfolio Companies Common Stock and Membership Units          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance     1,169,000    
Fair Value, Ending Balance 1,504,000   1,504,000   1,169,000
Investment, Identifier [Axis]: Investments in Affiliate Portfolio Companies Common Stock and Membership Units GreenPark Infrastructure, LLC - Series M-1 Energy: Electricity          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [8],[9]     171,000    
Fair Value, Ending Balance $ 171,000 [10],[11],[12]   $ 171,000 [10],[11],[12]   $ 171,000 [8],[9]
Investment in number of units 500 [10],[11],[13]   500 [10],[11],[13]   500 [8],[9],[14]
Investment, Identifier [Axis]: Investments in Affiliate Portfolio Companies Common Stock and Membership Units Kleen-Tech Acquisition, LLC Services: Business          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [15]     $ 998,000    
Fair Value, Ending Balance $ 1,333,000 [12]   $ 1,333,000 [12]   $ 998,000 [15]
Investment in number of units 250,000 [12],[13]   250,000 [12],[13]   250,000 [14],[15]
Investment, Identifier [Axis]: Investments in Affiliate Portfolio Companies Common Stock and Membership Units Princeton Medspa Partners, LLC - Warrant Services: Consumer          
Summary of Investment Holdings [Line Items]          
Investment in number of units [11],[13] 0.03   0.03    
Investment, Identifier [Axis]: Investments in Affiliate Portfolio Companies Derivatives Princeton Medspa Partners, LLC Services: Consumer          
Summary of Investment Holdings [Line Items]          
Principal [11],[13],[16] $ 1,000,000,000   $ 1,000,000,000    
Investment, Identifier [Axis]: Investments in Affiliate Portfolio Companies First Lien/Senior Secured Debt          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance 7,850,000   7,850,000    
Investment, Identifier [Axis]: Investments in Affiliate Portfolio Companies First Lien/Senior Secured Debt PMP OPCO, LLC (Princeton Medspa Partners, LLC) (Revolver) Services: Consumer Maturity 5/31/2029          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [10] (4,000)   (4,000)    
Investment, Identifier [Axis]: Investments in Affiliate Portfolio Companies First Lien/Senior Secured Debt PMP OPCO, LLC (Princeton Medspa Partners, LLC) Services: Consumer Interest Rate 13.84% Reference Rate and Spread SOFR + 8.50% Floor 2.00% Maturity 5/31/2029          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [10],[17] 1,643,000   1,643,000    
Principal [10],[13],[17] 1,688,000   1,688,000    
Investment, Identifier [Axis]: Investments in Affiliate Portfolio Companies First Lien/Senior Secured Debt Riddell, Inc. Consumer goods: Durable Interest Rate 11.33% Reference Rate and Spread SOFR + 6.00% Floor 1.00% Maturity 3/29/2029          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [10],[17] 6,211,000   6,211,000    
Principal [10],[13],[17] 6,324,000   6,324,000    
Investment, Identifier [Axis]: Investments in Affiliate Portfolio Companies Joint Ventures          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance     45,012,000    
Fair Value, Ending Balance 40,745,000   40,745,000   $ 45,012,000
Investment, Identifier [Axis]: Investments in Affiliate Portfolio Companies Joint Ventures Series A-Great Lakes Funding II LLC Joint Venture          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [8],[18],[19],[20]     45,012,000    
Fair Value, Ending Balance 40,745,000 [10],[16],[21],[22]   40,745,000 [10],[16],[21],[22]   45,012,000 [8],[18],[19],[20]
Investment, Identifier [Axis]: Investments in Affiliate Portfolio Companies Preferred Stock and Units          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance     5,481,000    
Fair Value, Ending Balance 6,413,000   6,413,000   5,481,000
Investment, Identifier [Axis]: Investments in Affiliate Portfolio Companies Preferred Stock and Units BMP Slappey Holdco, LLC Telecommunications          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [15]     553,000    
Fair Value, Ending Balance $ 585,000 [12]   $ 585,000 [12]   $ 553,000 [15]
Investment in number of units 200,000 [12],[13]   200,000 [12],[13]   200,000 [14],[15]
Investment, Identifier [Axis]: Investments in Affiliate Portfolio Companies Preferred Stock and Units BMP Slappey Investment II Telecommunications          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [15]     $ 246,000    
Fair Value, Ending Balance $ 260,000 [12]   $ 260,000 [12]   $ 246,000 [15]
Investment in number of units 88,946 [12],[13]   88,946 [12],[13]   88,946 [14],[15]
Investment, Identifier [Axis]: Investments in Affiliate Portfolio Companies Preferred Stock and Units EBSC Holdings LLC (Riddell, Inc.) Consumer goods: Durable Interest Rate 10.00% PIK          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [23] $ 2,028,000   $ 2,028,000    
Investment in number of units [13],[23] 2,049,315   2,049,315    
Investment, Identifier [Axis]: Investments in Affiliate Portfolio Companies Preferred Stock and Units GreenPark Infrastructure, LLC - Series A Energy: Electricity          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [9]     $ 500,000    
Fair Value, Ending Balance $ 500,000 [11]   $ 500,000 [11]   $ 500,000 [9]
Investment in number of units 1,000 [11],[13]   1,000 [11],[13]   1,000 [9],[14]
Investment, Identifier [Axis]: Investments in Affiliate Portfolio Companies Preferred Stock and Units Northeast Metal Works LLC - Class O Preferred Metals & Mining          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [24]     $ 4,182,000    
Fair Value, Ending Balance [24]         $ 4,182,000
Investment in number of units [14],[24]         4,500,000
Investment, Identifier [Axis]: Investments in Affiliate Portfolio Companies Preferred Stock and Units Northeast Metal Works LLC - Class O Preferred Metals & Mining Interest Rate 10.00% PIK          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [12],[23] $ 2,040,000   $ 2,040,000    
Investment in number of units [12],[13],[23] 4,950,000   4,950,000    
Investment, Identifier [Axis]: Investments in Affiliate Portfolio Companies Preferred Stock and Units Northeast Metal Works LLC - Preferred Metals & Mining          
Summary of Investment Holdings [Line Items]          
Investment in number of units 2,368 [12],[13]   2,368 [12],[13]   2,368 [14],[15]
Investment, Identifier [Axis]: Investments in Affiliate Portfolio Companies Preferred Stock and Units Princeton Medspa Partners, LLC Services: Consumer Interest Rate 12.50% PIK          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [11],[23] $ 1,000,000   $ 1,000,000    
Investment in number of units [11],[13],[23] 1,000,000   1,000,000    
Investment, Identifier [Axis]: Investments in Affiliate Portfolio Companies Second Lien/Senior Secured Debt          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance     $ 3,560,000    
Fair Value, Ending Balance $ 3,952,000   3,952,000   $ 3,560,000
Investment, Identifier [Axis]: Investments in Affiliate Portfolio Companies Second Lien/Senior Secured Debt Northeast Metal Works LLC Metals & Mining Interest Rate 8.00% Maturity 1/1/2025          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance 500,000   500,000    
Principal [13] 500,000   500,000    
Investment, Identifier [Axis]: Investments in Affiliate Portfolio Companies Second Lien/Senior Secured Debt Northeast Metal Works LLC Metals & Mining Interest Rate 8.00% Maturity 4/5/2028          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance     3,560,000    
Fair Value, Ending Balance 3,452,000   3,452,000   3,560,000
Principal 4,500,000 [13]   4,500,000 [13]   4,500,000 [14]
Investment, Identifier [Axis]: Investments in Controlled Affiliated Portfolio Companies          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance     14,318,000    
Fair Value, Ending Balance         14,318,000
Investment, Identifier [Axis]: Investments in Controlled Affiliated Portfolio Companies Joint Ventures          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance     14,275,000    
Fair Value, Ending Balance         14,275,000
Investment, Identifier [Axis]: Investments in Controlled Affiliated Portfolio Companies Joint Ventures KCAP Freedom 3 LLC Joint Venture          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [20]     14,275,000    
Fair Value, Ending Balance [20]         14,275,000
Investment, Identifier [Axis]: Investments in Controlled Affiliated Portfolio Companies Subordinated Debt          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance     43,000    
Fair Value, Ending Balance         43,000
Investment, Identifier [Axis]: Investments in Controlled Affiliated Portfolio Companies Subordinated Debt ProAir, LLC Capital Equipment Interest Rate 17.75% PIK Maturity 1/31/2023          
Summary of Investment Holdings [Line Items]          
Principal [14],[25]         2,020,000
Investment, Identifier [Axis]: Investments in Controlled Affiliated Portfolio Companies Subordinated Debt Tank Partners Equipment Holdings LLC Energy: Oil & Gas Interest Rate 10.00% PIK Maturity 2/15/2022          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [25]     43,000    
Fair Value, Ending Balance [25]         43,000
Principal [14],[25]         $ 511,000
Investment, Identifier [Axis]: Investments in Controlled Afilliated Portfolio Companies          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance $ 13,547,000   $ 13,547,000    
Investment, Identifier [Axis]: Investments in Controlled Afilliated Portfolio Companies Common Stock and Membership Units ProAir HoldCo, LLC Capital Equipment          
Summary of Investment Holdings [Line Items]          
Investment in number of units 2,749,997 [13]   2,749,997 [13]   2,749,997 [14]
Investment, Identifier [Axis]: Investments in Controlled Afilliated Portfolio Companies Common Stock and Membership Units Tank Partners Equipment Holdings LLC - Class A Energy: Oil & Gas          
Summary of Investment Holdings [Line Items]          
Investment in number of units [14],[25]         49,000
Investment, Identifier [Axis]: Investments in Controlled Afilliated Portfolio Companies Joint Ventures          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance $ 13,547,000   $ 13,547,000    
Investment, Identifier [Axis]: Investments in Controlled Afilliated Portfolio Companies Joint Ventures KCAP Freedom 3 LLC Joint Venture          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [16] 13,547,000   13,547,000    
Investment, Identifier [Axis]: Investments in Controlled Afilliated Portfolio Companies Subordinated Debt ProAir, LLC Capital Equipment Maturity 1/31/2023          
Summary of Investment Holdings [Line Items]          
Principal [13],[26] 2,020,000   2,020,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance     398,325,000    
Fair Value, Ending Balance 370,359,000   370,359,000   $ 398,325,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Collateralized Loan Obiligations JMP Credit Advisors CLO IV LTD CLO Fund Securities Interest Rate 4.39% Maturity 7/17/2029          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [16],[27],[28] 615,000   615,000    
Principal [13],[16],[27],[28] 18,407,000   18,407,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Collateralized Loan Obligations          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance     8,968,000    
Fair Value, Ending Balance 7,354,000   7,354,000   8,968,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Collateralized Loan Obligations Catamaran CLO 2014-1 Ltd. CLO Fund Securities Interest Rate 13.70% Maturity 4/20/2030          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [20],[29],[30]     904,000    
Fair Value, Ending Balance [20],[29],[30]         904,000
Principal [14],[20],[29],[30]         15,161,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Collateralized Loan Obligations Catamaran CLO 2014-1 Ltd. CLO Fund Securities Interest Rate 43.26% Maturity 4/20/2030          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [16],[27],[28] 459,000   459,000    
Principal [13],[16],[27],[28] 15,161,000   15,161,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Collateralized Loan Obligations Catamaran CLO 2018-1 Ltd. CLO Fund Securities Interest Rate 2.87% Maturity 10/27/2031          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [16],[27],[28] 2,956,000   2,956,000    
Principal [13],[16],[27],[28] 10,000,000   10,000,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Collateralized Loan Obligations Catamaran CLO 2018-1 Ltd. CLO Fund Securities Interest Rate 25.00% Maturity 10/27/2031          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [20],[29],[30]     3,923,000    
Fair Value, Ending Balance [20],[29],[30]         3,923,000
Principal [14],[20],[29],[30]         10,000,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Collateralized Loan Obligations Dryden 30 Senior Loan Fund CLO Fund Securities Interest Rate 25.40% Maturity 11/1/2028          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [20],[29],[30]     409,000    
Fair Value, Ending Balance [20],[29],[30]         409,000
Principal [14],[20],[29],[30]         3,250,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Collateralized Loan Obligations Dryden 30 Senior Loan Fund CLO Fund Securities Interest Rate 37.90% Maturity 11/1/2028          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [16],[27],[28] 216,000   216,000    
Principal [13],[16],[27],[28] 3,250,000   3,250,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Collateralized Loan Obligations JMP Credit Advisors CLO IV LTD CLO Fund Securities Interest Rate 19.80% Maturity 7/17/2029          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [20],[29],[30]     683,000    
Fair Value, Ending Balance [20],[29],[30]         683,000
Principal [14],[20],[29],[30]         18,407,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Collateralized Loan Obligations JMP Credit Advisors CLO V LTD CLO Fund Securities Interest Rate 17.61% Maturity 7/17/2030          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [16],[27],[28] 3,108,000   3,108,000    
Principal [13],[16],[27],[28] 17,074,000   17,074,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Collateralized Loan Obligations JMP Credit Advisors CLO V LTD CLO Fund Securities Interest Rate 25.30% Maturity 7/17/2030          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [20],[29],[30]     3,049,000    
Fair Value, Ending Balance [20],[29],[30]         3,049,000
Principal [14],[20],[29],[30]         17,074,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Common Stock and Membership Units          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance     7,365,000    
Fair Value, Ending Balance 8,225,000   8,225,000   7,365,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Common Stock and Membership Units AAPC Holdings, LLC Equity Healthcare & Pharmaceuticals          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [9]     493,000    
Fair Value, Ending Balance [9]         493,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Common Stock and Membership Units AAPC Holdings, LLC Healthcare & Pharmaceuticals          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [11] 464,000   464,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Common Stock and Membership Units ATP Oil & Gas Corporation Energy: Oil & Gas          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [31]     57,000    
Fair Value, Ending Balance [31]         57,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Common Stock and Membership Units Advantage Capital Holdings LLC - Class A Units Banking, Finance, Insurance & Real Estate          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [11] $ 2,171,000   $ 2,171,000    
Investment in number of units [11],[13] 822   822    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Common Stock and Membership Units Advantage Capital Holdings LLC Banking, Finance, Insurance & Real Estate          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [9],[32]     $ 2,828,000    
Fair Value, Ending Balance [9],[32]         $ 2,828,000
Investment in number of units [9],[14],[32]         822
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Common Stock and Membership Units Anthem Sports & Entertainment Inc. - Class A Warrant Media: Broadcasting & Subscription          
Summary of Investment Holdings [Line Items]          
Investment in number of units 510 [13]   510 [13]   510 [14]
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Common Stock and Membership Units Anthem Sports & Entertainment Inc. - Class B Warrant Media: Broadcasting & Subscription          
Summary of Investment Holdings [Line Items]          
Investment in number of units 88 [13]   88 [13]   88 [14]
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Common Stock and Membership Units Anthem Sports & Entertainment Inc. - Warrant for CS Media: Broadcasting & Subscription          
Summary of Investment Holdings [Line Items]          
Investment in number of units 1,644 [13]   1,644 [13]   1,644 [14]
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Common Stock and Membership Units Carestream Health Holdings, Inc. Healthcare & Pharmaceuticals          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance     $ 93,000    
Fair Value, Ending Balance $ 115,000   $ 115,000   $ 93,000
Investment in number of units 4,099 [13]   4,099 [13]   4,099 [14]
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Common Stock and Membership Units Centric Brands Inc. Machinery (Non-Agrclt/Constr/Electr)          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     $ 121,000    
Fair Value, Ending Balance $ 1,394,000 [17]   $ 1,394,000 [17]   $ 121,000 [32]
Investment in number of units 81,770 [13],[17]   81,770 [13],[17]   36,342 [14],[32]
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Common Stock and Membership Units DxTx Pain and Spine LLC Healthcare & Pharmaceuticals          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [9]     $ 258,000    
Fair Value, Ending Balance $ 261,000 [11]   $ 261,000 [11]   $ 258,000 [9]
Investment in number of units 158,166 [11],[13]   158,166 [11],[13]   158,166 [9],[14]
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Common Stock and Membership Units Everyware Global, Inc. Consumer goods: Durable          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [33]     $ 174,000    
Fair Value, Ending Balance $ 382,000 [34]   $ 382,000 [34]   $ 174,000 [33]
Investment in number of units 1,085,565 [13],[34]   1,085,565 [13],[34]   1,085,565 [14],[33]
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Common Stock and Membership Units FP WRCA Coinvestment Fund VII, Ltd. - Class A Capital Equipment          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [20],[30]     $ 903,000    
Fair Value, Ending Balance $ 1,111,000 [16],[28]   $ 1,111,000 [16],[28]   $ 903,000 [20],[30]
Investment in number of units 100 [13],[16],[28]   100 [13],[16],[28]   100 [14],[20],[30]
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Common Stock and Membership Units Fusion Connect, Inc. Telecommunications          
Summary of Investment Holdings [Line Items]          
Investment in number of units 14 [13],[17]   14 [13],[17]   121,871 [14],[32]
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Common Stock and Membership Units HDC/HW Holdings, LLC High Tech Industries          
Summary of Investment Holdings [Line Items]          
Investment in number of units [13],[17] 148,826   148,826    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Common Stock and Membership Units LB NewHoldCo LLC Hotel, Gaming & Leisure          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     $ 1,442,000    
Fair Value, Ending Balance $ 1,333,000 [17]   $ 1,333,000 [17]   $ 1,442,000 [32]
Investment in number of units 96,523 [13],[17]   96,523 [13],[17]   96,523 [14],[32]
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Common Stock and Membership Units Morae Global Holdings Inc. - Warrant IT Consulting & Other Services          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance     $ 99,000    
Fair Value, Ending Balance $ 130,000   $ 130,000   $ 99,000
Investment in number of units 1 [13]   1 [13]   1 [14]
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Common Stock and Membership Units Ohene Holdings B.V. - Warrant High Tech Industries          
Summary of Investment Holdings [Line Items]          
Investment in number of units 4 [13],[16],[28]   4 [13],[16],[28]   4 [14],[20],[30]
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Common Stock and Membership Units Qualtek LLC High Tech Industries          
Summary of Investment Holdings [Line Items]          
Investment in number of units 150,262 [13],[17],[35]   150,262 [13],[17],[35]   150,262 [14],[32],[36]
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Common Stock and Membership Units Roscoe Investors, LLC - Class A Healthcare & Pharmaceuticals          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance $ 478,000   $ 478,000    
Investment in number of units [13] 10,000   10,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Common Stock and Membership Units Roscoe Investors, LLC Class A Healthcare & Pharmaceuticals          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance     $ 425,000    
Fair Value, Ending Balance         $ 425,000
Investment in number of units [14]         10,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Common Stock and Membership Units South Street Securities Holdings, Inc - Warrant Banking, Finance, Insurance & Real Estate          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance     403,000    
Fair Value, Ending Balance $ 386,000   $ 386,000   $ 403,000
Investment in number of units 3,966 [13]   3,966 [13]   3,966 [14]
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Common Stock and Membership Units Sundance Holdings Group, LLC Retail          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     $ 69,000    
Fair Value, Ending Balance [32]         $ 69,000
Investment in number of units 14,603 [13],[17]   14,603 [13],[17]   14,603 [14],[32]
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Common Stock and Membership Units World Business Lenders, LLC Banking, Finance, Insurance & Real Estate          
Summary of Investment Holdings [Line Items]          
Investment in number of units 49,209 [13],[16]   49,209 [13],[16]   49,209 [14],[20]
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Derivatives Advantage Capital Holdings LLC Banking, Finance, Insurance & Real Estate          
Summary of Investment Holdings [Line Items]          
Principal $ 164,000 [11],[13],[16]   $ 164,000 [11],[13],[16]   $ 164,000 [9],[14],[20]
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Derivatives Epilog Partners LP (Care Connectors Medical Group) Healthcare & Pharmaceuticals          
Summary of Investment Holdings [Line Items]          
Principal [11],[13],[16] 1,166,667,000   1,166,667,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Derivatives HDNet Holdco LLC (Anthem Sports & Entertainment Inc.) Media: Broadcasting & Subscription          
Summary of Investment Holdings [Line Items]          
Principal [14],[20],[37]         200
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Derivatives HDNet Holdco LLC (Anthem) Media: Broadcasting & Subscription          
Summary of Investment Holdings [Line Items]          
Principal [13],[16] 200   200    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance     336,599,000    
Fair Value, Ending Balance 312,965,000   312,965,000   336,599,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt AIDC IntermediateCo 2, LLC (Peak Technologies) Services: Business Interest Rate 11.72% Reference Rate and Spread SOFR + 6.40% Floor 1.00% Maturity 7/22/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 971,000   971,000    
Principal [13],[17] 985,000   985,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt AIDC IntermediateCo 2, LLC (Peak Technologies) Services: Business Interest Rate 11.80% Reference Rate and Spread SOFR + 6.40% Floor 1.00% Maturity 7/22/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     976,000    
Fair Value, Ending Balance [32]         976,000
Principal [14],[32]         990,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt AIS Holdco, LLC Banking, Finance, Insurance & Real Estate Interest Rate 10.64% Reference Rate and Spread SOFR + 5.00% Maturity 8/15/2025          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     2,220,000    
Fair Value, Ending Balance [32]         2,220,000
Principal [14],[32]         2,223,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt AMCP Pet Holdings, Inc. (Revolver) Beverage, Food and Tobacco Interest Rate 11.72% Reference Rate and Spread SOFR + 6.25% Floor 1.00% Maturity 10/6/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance 992,000   992,000    
Principal [13] 1,004,000   1,004,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt AMCP Pet Holdings, Inc. (Revolver) Beverage, Food and Tobacco Interest Rate 12.43% Reference Rate and Spread SOFR + 7.00% Floor 1.00% Maturity 10/6/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [8]     630,000    
Fair Value, Ending Balance [8]         630,000
Principal [8],[14]         651,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt AMCP Pet Holdings, Inc. Beverage, Food and Tobacco Interest Rate 12.48% Reference Rate and Spread SOFR + 6.25%, 0.75% PIK Floor 1.00% Maturity 10/6/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 4,802,000   4,802,000    
Principal [13],[17] 4,863,000   4,863,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt AMCP Pet Holdings, Inc. Beverage, Food and Tobacco Interest Rate 12.50% Reference Rate and Spread SOFR + 6.25%, 0.75% PIK Floor 1.00% Maturity 10/6/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     4,766,000    
Fair Value, Ending Balance [32]         4,766,000
Principal [14],[32]         4,869,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Accordion Partners LLC (Revolver) Finance Interest Rate 0.50% Reference Rate and Spread SOFR + 6.25% Floor 0.75% Maturity 8/31/2028          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [8]     (2,000)    
Fair Value, Ending Balance [8]         (2,000)
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Accordion Partners LLC (Revolver) Finance Interest Rate 11.57% Reference Rate and Spread SOFR + 6.25% Floor 0.75% Maturity 8/31/2028          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [10] 760,000   760,000    
Principal [10],[13] 765,000   765,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Accordion Partners LLC Finance Interest Rate 11.35% Reference Rate and Spread SOFR + 6.00% Floor 0.75% Maturity 8/29/2029          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 9,398,000   9,398,000    
Principal [13],[17] 9,425,000   9,425,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Accordion Partners LLC Finance Interest Rate 11.60% Reference Rate and Spread SOFR + 6.25% Floor 0.75% Maturity 8/29/2029          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     9,468,000    
Fair Value, Ending Balance [32]         9,468,000
Principal [14],[32]         9,472,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Accurate Background, LLC Services: Business Interest Rate 11.60% Reference Rate and Spread SOFR + 6.00% Floor 1.00% Maturity 3/26/2029          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 4,302,000   4,302,000    
Principal [13],[17] 4,390,000   4,390,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Accurate Background, LLC Services: Business Interest Rate 11.61% Reference Rate and Spread SOFR + 6.00% Floor 1.00% Maturity 3/26/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     4,242,000    
Fair Value, Ending Balance [32]         4,242,000
Principal [14],[32]         4,412,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Advantage Capital Holdings LLC Banking, Finance, Insurance & Real Estate Interest Rate 13.00% Reference Rate and Spread 5.00% + PIK Maturity 4/14/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 13,941,000   13,941,000    
Principal [13],[17] 14,390,000   14,390,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Advantage Capital Holdings LLC Banking, Finance, Insurance & Real Estate Interest Rate 13.00% Reference Rate and Spread 5.00% PIK Maturity 4/14/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     13,773,000    
Fair Value, Ending Balance [32]         13,773,000
Principal [14],[32]         14,036,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt American Academy Holdings, LLC Healthcare & Pharmaceuticals Interest Rate 15.21% Reference Rate and Spread SOFR + 4.50%, 5.25% PIK Floor 3.25% Maturity 6/30/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 3,860,000   3,860,000    
Principal [13],[17] 3,835,000   3,835,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt American Academy Holdings, LLC Healthcare & Pharmaceuticals Interest Rate 16.47% Reference Rate and Spread SOFR + 5.75%, 5.25% PIK Floor 1.00% Maturity 1/1/2025          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     3,768,000    
Fair Value, Ending Balance [32]         3,768,000
Principal [14],[32]         3,744,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Ancile Solutions, Inc. High Tech Industries Interest Rate 15.61% Reference Rate and Spread SOFR + 10.00% Floor 1.00% Maturity 6/11/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 6,196,000   6,196,000    
Principal [13],[17] 6,165,000   6,165,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Ancile Solutions, Inc. High Tech Industries Interest Rate 15.65% Reference Rate and Spread SOFR + 10.00% Floor 1.00% Maturity 6/11/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     6,305,000    
Fair Value, Ending Balance [32]         6,305,000
Principal [14],[32]         6,274,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Anthem Sports & Entertainment Inc. (Revolver 2022) Media: Broadcasting & Subscription Interest Rate 15.07% Reference Rate and Spread SOFR + 9.50% Floor 1.00% Maturity 6/30/2024          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance     465,000    
Fair Value, Ending Balance         465,000
Principal [14]         547,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Anthem Sports & Entertainment Inc. (Revolver 2022) Media: Broadcasting & Subscription Interest Rate 15.07% Reference Rate and Spread SOFR + 9.50%, 12.10% PIK, Floor 1.00% Maturity 6/30/2024          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance 403,000   403,000    
Principal [13] 563,000   563,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Anthem Sports & Entertainment Inc. (Revolver) Media: Broadcasting & Subscription Interest Rate 15.10% Reference Rate and Spread SOFR + 9.50% Floor 1.00% Maturity 11/15/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [8]     910,000    
Fair Value, Ending Balance [8]         910,000
Principal [8],[14]         1,084,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Anthem Sports & Entertainment Inc. (Revolver) Media: Broadcasting & Subscription Interest Rate 15.10% Reference Rate and Spread SOFR + 9.50%, 12.10% PIK Floor 1.00% Maturity 11/15/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [10] 801,000   801,000    
Principal [10],[13] 1,151,000   1,151,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Anthem Sports & Entertainment Inc. Media: Broadcasting & Subscription Interest Rate 15.10% Reference Rate and Spread SOFR + 9.50%, 12.10% PIK Floor 1.00% Maturity 11/15/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 9,754,000   9,754,000    
Principal [13],[17] 13,618,000   13,618,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Anthem Sports & Entertainment Inc. Media: Broadcasting & Subscription Interest Rate 15.11% Reference Rate and Spread SOFR + 9.50%, 12.11% PIK Floor 1.00% Maturity 11/15/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     10,965,000    
Fair Value, Ending Balance [32]         10,965,000
Principal [14],[32]         12,880,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Appfire Technologies, LLC High Tech Industries Interest Rate 10.23% Reference Rate and Spread SOFR + 4.75% Maturity 3/9/2028          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 5,863,000   5,863,000    
Principal [13],[17] 5,863,000   5,863,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Appfire Technologies, LLC High Tech Industries Interest Rate 10.99% Reference Rate and Spread SOFR + 5.50% Floor 1.00% Maturity 3/9/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     5,859,000    
Fair Value, Ending Balance [32]         5,859,000
Principal [14],[32]         5,894,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Aventiv Technologies, LLC Alternative Carriers Interest Rate 10.50% Reference Rate and Spread SOFR + 4.89% Floor 1.00% Maturity 11/1/2024          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance     937,000    
Fair Value, Ending Balance         937,000
Principal [14]         989,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt BW NHHC Holdco Inc. Healthcare & Pharmaceuticals Interest Rate 12.85% Reference Rate and Spread SOFR + 7.50% Floor 2.00% Maturity 1/15/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [36]     969,000    
Fair Value, Ending Balance [36]         969,000
Principal [14],[36]         952,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt BetaNXT, Inc. (Revolver) Banking, Finance, Insurance & Real Estate Interest Rate 9.60% Reference Rate and Spread SOFR + 4.25% Maturity 7/1/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [8]     145,000    
Fair Value, Ending Balance [8]         145,000
Principal [8],[14]         242,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt BetaNXT, Inc. (Revolver) Banking, Finance, Insurance & Real Estate Interest Rate 9.84% Reference Rate and Spread SOFR + 4.50% Maturity 7/1/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [10] 989,000   989,000    
Principal [10],[13] 1,087,000   1,087,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt BetaNXT, Inc. Banking, Finance, Insurance & Real Estate Interest Rate 11.08% Reference Rate and Spread SOFR + 5.75% Maturity 7/1/2029          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 12,034,000   12,034,000    
Principal [13],[17] 12,544,000   12,544,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt BetaNXT, Inc. Banking, Finance, Insurance & Real Estate Interest Rate 11.10% Reference Rate and Spread SOFR + 5.75% Maturity 7/1/2029          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     12,104,000    
Fair Value, Ending Balance [32]         12,104,000
Principal [14],[32]         12,608,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Bradshaw International Parent Corp. (Revolver) Consumer goods: Durable Interest Rate 0.50% Reference Rate and Spread SOFR + 5.75% Floor 1.00% Maturity 10/21/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [8]     (25,000)    
Fair Value, Ending Balance [8]         (25,000)
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Bradshaw International Parent Corp. (Revolver) Consumer goods: Durable Reference Rate and Spread SOFR + 5.75% Floor 1.00% Maturity 10/21/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [10] (9,000)   (9,000)    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Bradshaw International Parent Corp. Consumer goods: Durable Interest Rate 11.19% Reference Rate and Spread SOFR + 5.75% Floor 1.00% Maturity 10/21/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 490,000   490,000    
Principal [13],[17] 495,000   495,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Bradshaw International Parent Corp. Consumer goods: Durable Interest Rate 11.21% Reference Rate and Spread SOFR + 5.75% Floor 1.00% Maturity 10/21/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     482,000    
Fair Value, Ending Balance [32]         482,000
Principal [14],[32]         496,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Bristol Hospice Healthcare & Pharmaceuticals Interest Rate 11.19% Reference Rate and Spread SOFR + 5.75% Floor 1.00% Maturity 12/22/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 2,746,000   2,746,000    
Principal [13],[17] 2,792,000   2,792,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Bristol Hospice Healthcare & Pharmaceuticals Interest Rate 11.96% Reference Rate and Spread SOFR + 6.50% Floor 1.00% Maturity 12/22/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     2,735,000    
Fair Value, Ending Balance [32]         2,735,000
Principal [14],[32]         2,809,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt C.P. Converters, Inc. Chemicals, Plastics and Rubber Interest Rate 13.21% Reference Rate and Spread SOFR + 6.50%, 1.00% PIK Floor 1.00% Maturity 9/30/2024          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 9,704,000   9,704,000    
Principal [13],[17] 9,704,000   9,704,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt C.P. Converters, Inc. Chemicals, Plastics and Rubber Interest Rate 13.25% Reference Rate and Spread SOFR + 6.50%, 1.00% PIK Floor 1.00% Maturity 9/30/2024          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     9,835,000    
Fair Value, Ending Balance [32]         9,835,000
Principal [14],[32]         9,738,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt CB MIDCO, LLC Consumer goods: Durable Interest Rate 11.19% Reference Rate and Spread SOFR + 5.75% Floor 1.00% Maturity 9/27/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 3,563,000   3,563,000    
Principal [13],[17] 3,782,000   3,782,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt CB MIDCO, LLC Consumer goods: Durable Interest Rate 11.21% Reference Rate and Spread SOFR + 5.75% Floor 1.00% Maturity 9/27/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     3,525,000    
Fair Value, Ending Balance [32]         3,525,000
Principal [14],[32]         3,802,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt CCMG Buyer, LLC (Care Connectors Medical Group) (Revolver) Healthcare & Pharmaceuticals Reference Rate and Spread SOFR + 5.75% Maturity 5/8/2030          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [10] (6,000)   (6,000)    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt CCMG Buyer, LLC (Care Connectors Medical Group) Healthcare & Pharmaceuticals Interest Rate 11.08% Reference Rate and Spread SOFR + 5.75% Maturity 5/8/2030          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 3,456,000   3,456,000    
Principal [13],[17] 3,500,000   3,500,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Cenexel Clinical Research, Inc. Healthcare & Pharmaceuticals Interest Rate 11.21% Reference Rate and Spread SOFR + 5.75% Floor 1.00% Maturity 11/8/2025          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 5,760,000   5,760,000    
Principal [13],[17] 5,773,000   5,773,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Cenexel Clinical Research, Inc. Healthcare & Pharmaceuticals Interest Rate 11.22% Reference Rate and Spread SOFR + 5.75% Floor 1.00% Maturity 11/8/2025          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     5,773,000    
Fair Value, Ending Balance [32]         5,773,000
Principal [14],[32]         5,773,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Centric Brands Inc. (TL) Machinery (Non-Agrclt/Constr/Electr) Interest Rate 12.84% Reference Rate and Spread SOFR + 5.50%, 2.00% PIK Floor 1.00% Maturity 8/6/2029          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 3,689,000   3,689,000    
Principal [13],[17] 3,689,000   3,689,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Centric Brands Inc. (TLA1) Machinery (Non-Agrclt/Constr/Electr) Interest Rate 13.34% Reference Rate and Spread SOFR + 8.00%, 12.34% PIK Floor 1.00% Maturity 2/6/2031          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 3,934,000   3,934,000    
Principal [13],[17] 3,934,000   3,934,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Centric Brands Inc. (TLA2) Machinery (Non-Agrclt/Constr/Electr) Interest Rate 13.34% Reference Rate and Spread SOFR + 8.00%, 12.34% PIK Floor 1.00% Maturity 2/6/2031          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 3,240,000   3,240,000    
Principal [13],[17] 3,240,000   3,240,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Centric Brands Inc. Machinery (Non-Agrclt/Constr/Electr) Interest Rate 14.87% Reference Rate and Spread SOFR + 2.50%, 7.00% PIK Maturity 10/9/2025          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     9,976,000    
Fair Value, Ending Balance [32]         9,976,000
Principal [14],[32]         10,487,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Colonnade Intermediate, LLC (Revolver) Services: Business Interest Rate 12.60% Reference Rate and Spread PRIME +7.00% Floor 1.00% Maturity 2/27/2024          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [8],[32]     41,000    
Fair Value, Ending Balance [8],[32]         41,000
Principal [8],[14],[32]         41,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Colonnade Intermediate, LLC (Revolver) Services: Business Interest Rate 12.60% Reference Rate and Spread SOFR +7.00% Floor 1.00% Maturity 2/27/2024          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [8],[32]     571,000    
Fair Value, Ending Balance [8],[32]         571,000
Principal [8],[14],[32]         576,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Colonnade Intermediate, LLC (Revolver) Services: Business Interest Rate 14.50% Reference Rate and Spread Prime + 7.50% Floor 1.00% Maturity 4/27/2024          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 515,000   515,000    
Principal [13],[17] 685,000   685,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Colonnade Intermediate, LLC (Super Priority) Services: Business Interest Rate 10.44% Reference Rate and Spread SOFR + 5.00% Floor 1.00% Maturity 7/31/2024          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [10] 641,000   641,000    
Principal [10],[13] 656,000   656,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Colonnade Intermediate, LLC Services: Business Interest Rate 12.40% Reference Rate and Spread SOFR + 7.00% Floor 1.00% Maturity 4/27/2024          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [10],[17] 5,381,000   5,381,000    
Principal [10],[13],[17] 7,167,000   7,167,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Colonnade Intermediate, LLC Services: Business Interest Rate 12.45% Reference Rate and Spread SOFR + 7.00% Floor 1.00% Maturity 2/27/2024          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     7,137,000    
Fair Value, Ending Balance [32]         7,137,000
Principal [14],[32]         7,185,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Critical Nurse Staffing, LLC (Revolver) Healthcare & Pharmaceuticals Interest Rate 0.50% Reference Rate and Spread SOFR + 6.50% Floor 1.00% Maturity 10/30/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [8]     (30,000)    
Fair Value, Ending Balance [8]         (30,000)
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Critical Nurse Staffing, LLC Healthcare & Pharmaceuticals Interest Rate 11.99% Reference Rate and Spread SOFR + 6.50% Floor 1.00% Maturity 10/30/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 12,011,000   12,011,000    
Principal [13],[17] 12,011,000   12,011,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Critical Nurse Staffing, LLC Healthcare & Pharmaceuticals Interest Rate 12.03% Reference Rate and Spread SOFR + 6.50% Floor 1.00% Maturity 10/30/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     12,506,000    
Fair Value, Ending Balance [32]         12,506,000
Principal [14],[32]         12,697,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Datalink, LLC Healthcare & Pharmaceuticals Interest Rate 12.14% Reference Rate and Spread SOFR + 6.75% Floor 1.00% Maturity 11/23/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 2,545,000   2,545,000    
Principal [13],[17] 2,678,000   2,678,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Datalink, LLC Healthcare & Pharmaceuticals Interest Rate 12.21% Reference Rate and Spread SOFR + 6.75% Floor 1.00% Maturity 11/23/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     2,715,000    
Fair Value, Ending Balance [32]         2,715,000
Principal [14],[32]         2,715,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Dentive, LLC (Revolver) Healthcare & Pharmaceuticals Interest Rate 12.39% Reference Rate and Spread SOFR + 7.00% Floor 0.75% Maturity 12/23/2028          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [8]     44,000    
Fair Value, Ending Balance [8]         44,000
Principal [8],[14]         48,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Dentive, LLC (Revolver) Healthcare & Pharmaceuticals Reference Rate and Spread SOFR + 7.00% Floor 0.75% Maturity 12/23/2028          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [10] (5,000)   (5,000)    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Dentive, LLC Healthcare & Pharmaceuticals Interest Rate 12.14% Reference Rate and Spread SOFR + 6.75% Floor 0.75% Maturity 12/26/2028          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [10],[17] 2,286,000   2,286,000    
Principal [10],[13],[17] 2,349,000   2,349,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Dentive, LLC Healthcare & Pharmaceuticals Interest Rate 12.35% Reference Rate and Spread SOFR + 7.00% Floor 0.75% Maturity 12/26/2028          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [8],[32]     1,786,000    
Fair Value, Ending Balance [8],[32]         1,786,000
Principal [8],[14],[32]         1,824,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Dodge Data & Analytics LLC Construction & Building Interest Rate 10.23% Reference Rate and Spread SOFR + 4.75% Floor 0.50% Maturity 2/10/2029          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17],[35] 1,098,000   1,098,000    
Principal [13],[17],[35] 1,470,000   1,470,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Dodge Data & Analytics LLC Construction & Building Interest Rate 10.25% Reference Rate and Spread SOFR + 4.75% Floor 0.50% Maturity 2/10/2029          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32],[36]     1,165,000    
Fair Value, Ending Balance [32],[36]         1,165,000
Principal [14],[32],[36]         1,478,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt ELO Touch Solutions, Inc High Tech Industries Interest Rate 11.97% Reference Rate and Spread SOFR + 6.50% Maturity 12/14/2025          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32],[36]     1,983,000    
Fair Value, Ending Balance [32],[36]         1,983,000
Principal [14],[32],[36]         2,049,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Florida Food Products, LLC Beverage, Food and Tobacco Interest Rate 10.43% Reference Rate and Spread SOFR + 5.00% Floor 0.75% Maturity 10/18/2028          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17],[35] 5,981,000   5,981,000    
Principal [13],[17],[35] 6,858,000   6,858,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Florida Food Products, LLC Beverage, Food and Tobacco Interest Rate 10.44% Reference Rate and Spread SOFR + 5.00% Floor 0.75% Maturity 10/18/2028          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32],[36]     6,048,000    
Fair Value, Ending Balance [32],[36]         6,048,000
Principal [14],[32],[36]         6,893,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Fortis Payment Systems, LLC Diversified Financial Services Interest Rate 11.18% Reference Rate and Spread SOFR + 5.75% Floor 1.00% Maturity 12/13/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [10],[17] 2,756,000   2,756,000    
Principal [10],[13],[17] 2,782,000   2,782,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Franchise Group, Inc. Retail Interest Rate 10.36% Reference Rate and Spread SOFR + 4.75% Floor 0.75% Maturity 3/10/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17],[35] 2,215,000   2,215,000    
Principal [13],[17],[35] 2,900,000   2,900,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Franchise Group, Inc. Retail Interest Rate 10.44% Reference Rate and Spread SOFR + 4.75% Floor 0.75% Maturity 2/25/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [20],[32],[36]     2,350,000    
Fair Value, Ending Balance [20],[32],[36]         2,350,000
Principal [14],[20],[32],[36]         2,900,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Global Integrated Flooring Systems Inc. (Revolver) Consumer goods: Durable Interest Rate 11.59% Reference Rate and Spread SOFR + 8.37% Maturity 6/30/2025          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance 30,000   30,000    
Principal [13] 51,000   51,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Global Integrated Flooring Systems Inc. (Revolver) Consumer goods: Durable Interest Rate 13.72% Reference Rate and Spread SOFR + 8.36% Maturity 5/15/2024          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance     31,000    
Fair Value, Ending Balance         31,000
Principal [14]         51,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Global Integrated Flooring Systems Inc. Consumer goods: Durable Interest Rate 13.67% Reference Rate and Spread SOFR + 8.36%, 1.00% PIK Maturity 6/30/2025          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance 3,988,000   3,988,000    
Principal [13] 6,632,000   6,632,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Global Integrated Flooring Systems Inc. Consumer goods: Durable Interest Rate 14.76% Reference Rate and Spread SOFR + 8.36%, 1.00% PIK Maturity 5/15/2024          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance     4,127,000    
Fair Value, Ending Balance         4,127,000
Principal [14]         6,852,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt H-CA II, LLC Banking, Finance, Insurance & Real Estate Interest Rate 16.00% Maturity 4/1/2024          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance     1,854,000    
Fair Value, Ending Balance 1,808,000   1,808,000   1,854,000
Principal 1,808,000 [13]   1,808,000 [13]   1,854,000 [14]
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt H.W. Lochner, Inc. (Revolver) Services: Business Interest Rate 11.73% Reference Rate and Spread SOFR + 6.25% Floor 1.00% Maturity 7/2/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance 7,836,000   7,836,000    
Principal [13] 8,000,000   8,000,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt H.W. Lochner, Inc. (Revolver) Services: Business Interest Rate 11.76% Reference Rate and Spread SOFR + 6.25% Floor 1.00% Maturity 7/2/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [8]     3,578,000    
Fair Value, Ending Balance [8]         3,578,000
Principal [8],[14]         3,858,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt H.W. Lochner, Inc. Services: Business Interest Rate 11.71% Reference Rate and Spread SOFR + 6.25% Floor 1.00 Maturity 7/2/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 14,288,000   14,288,000    
Principal [13],[17] 14,588,000   14,588,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt H.W. Lochner, Inc. Services: Business Interest Rate 11.81% Reference Rate and Spread SOFR + 6.25% Floor 1.00% Maturity 7/2/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     14,149,000    
Fair Value, Ending Balance [32]         14,149,000
Principal [14],[32]         14,663,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt HDC/HW Intermediate Holdings, LLC (Revolver) High Tech Industries Interest Rate 14.83% Reference Rate and Spread SOFR + 7.50%, 2.00% PIK Floor 1.00% Maturity 12/21/2023          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [25],[32]     437,000    
Fair Value, Ending Balance [25],[32]         437,000
Principal [14],[25],[32]         773,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt HDC/HW Intermediate Holdings, LLC (Term Loan A) High Tech Industries Interest Rate 14.83 Reference Rate and Spread SOFR + 7.50%, 2.00% PIK Floor 1.00% Maturity 12/21/2023          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [25],[32]     4,252,000    
Fair Value, Ending Balance [25],[32]         4,252,000
Principal [14],[25],[32]         7,525,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt HDC/HW Intermediate Holdings, LLC - Term Loan A High Tech Industries Interest Rate 9.10% Reference Rate and Spread SOFR + 1.00%, 2.50% PIK Maturity 6/21/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 5,082,000   5,082,000    
Principal [13],[17] 5,561,000   5,561,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt HDC/HW Intermediate Holdings, LLC - Term Loan B High Tech Industries Maturity 6/21/2026          
Summary of Investment Holdings [Line Items]          
Principal [13],[17],[26] 3,851,000   3,851,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Help Systems Holdings, Inc. High Tech Industries Interest Rate 9.43% Reference Rate and Spread SOFR + 4.00% Floor 0.75% Maturity 11/19/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17],[35] 1,774,000   1,774,000    
Principal [13],[17],[35] 1,964,000   1,964,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Help Systems Holdings, Inc. High Tech Industries Interest Rate 9.48% Reference Rate and Spread SOFR + 4.00% Floor 0.75% Maturity 11/19/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32],[36]     1,876,000    
Fair Value, Ending Balance [32],[36]         1,876,000
Principal [14],[32],[36]         1,974,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Hollander Intermediate LLC Consumer goods: Durable Interest Rate 14.21% Reference Rate and Spread SOFR + 8.75% Floor 2.00% Maturity 9/19/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 5,086,000   5,086,000    
Principal [13],[17] 5,505,000   5,505,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Hollander Intermediate LLC Consumer goods: Durable Interest Rate 14.22% Reference Rate and Spread SOFR + 8.75% Floor 2.00% Maturity 9/19/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     5,260,000    
Fair Value, Ending Balance [32]         5,260,000
Principal [14],[32]         5,508,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt IDC Infusion Services Healthcare & Pharmaceuticals Interest Rate 11.98% Reference Rate and Spread SOFR + 6.50% Floor 0.50% Maturity 7/7/2028          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [8],[32]     2,863,000    
Fair Value, Ending Balance [8],[32]         2,863,000
Principal [8],[14],[32]         2,928,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt IDC Infusion Services LLC Healthcare & Pharmaceuticals Interest Rate 11.85% Reference Rate and Spread SOFR + 6.50% Floor 1.00% Maturity 7/7/2028          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [10],[17] 2,865,000   2,865,000    
Principal [10],[13],[17] 2,913,000   2,913,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Intermedia Holdings, INC. High Tech Industries Interest Rate 11.47% Reference Rate and Spread SOFR + 6.00% Floor 1.00% Maturity 7/21/2025          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     2,531,000    
Fair Value, Ending Balance [32]         2,531,000
Principal [14],[32]         2,613,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Ivanti Software, Inc. High Tech Industries Interest Rate 9.81% Reference Rate and Spread SOFR + 4.25% Floor 0.75% Maturity 12/1/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17],[35] 785,000   785,000    
Principal [13],[17],[35] 982,000   982,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Ivanti Software, Inc. High Tech Industries Interest Rate 9.91% Reference Rate and Spread SOFR + 4.25% Floor 0.75% Maturity 12/1/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     940,000    
Fair Value, Ending Balance [32]         940,000
Principal [14],[32]         987,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt JO ET Holdings Limited Telecommunications Interest Rate 11.34% Reference Rate and Spread SOFR + 6.00%, 7.00% PIK Floor 1.00% Maturity 12/15/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [16],[28] 2,335,000   2,335,000    
Principal [13],[16],[28] 2,290,000   2,290,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt JO ET Holdings Limited Telecommunications Interest Rate 18.38% Reference Rate and Spread SOFR + 6.00%, 7.00% PIK Floor 1.00% Maturity 12/15/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [20],[30]     2,254,000    
Fair Value, Ending Balance [20],[30]         2,254,000
Principal [14],[20],[30]         2,260,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Keg Logistics LLC (Revolver) Services: Business Interest Rate 11.53% Reference Rate and Spread SOFR + 6.00% Floor 1.00% Maturity 11/23/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance     842,000    
Fair Value, Ending Balance         842,000
Principal [14]         872,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Keg Logistics LLC (Revolver) Services: Business Interest Rate 11.67% Reference Rate and Spread SOFR + 6.75% Floor 1.00% Maturity 11/23/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance 859,000   859,000    
Principal [13] 872,000   872,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Keg Logistics LLC Services: Business Interest Rate 11.49% Reference Rate and Spread SOFR + 6.00% Floor 1.00% Maturity 11/23/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 11,755,000   11,755,000    
Principal [13],[17] 11,938,000   11,938,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Keg Logistics LLC Services: Business Interest Rate 11.53% Reference Rate and Spread SOFR + 6.00% Floor 1.00% Maturity 11/23/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     11,579,000    
Fair Value, Ending Balance [32]         11,579,000
Principal [14],[32]         11,999,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Lifescan Global Corporation Healthcare & Pharmaceuticals Interest Rate 11.93% Reference Rate and Spread SOFR + 6.50% Floor 1.00% Maturity 12/31/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17],[35] 1,093,000   1,093,000    
Principal [13],[17],[35] 2,273,000   2,273,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Lifescan Global Corporation Healthcare & Pharmaceuticals Interest Rate 11.98% Reference Rate and Spread SOFR + 6.50% Floor 1.00% Maturity 12/31/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     1,792,000    
Fair Value, Ending Balance [32]         1,792,000
Principal [14],[32]         2,381,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Lucky Bucks, LLC (First Out) Hotel, Gaming & Leisure Interest Rate 13.03% Reference Rate and Spread SOFR + 7.65% Floor 1.00% Maturity 10/2/28          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     473,000    
Fair Value, Ending Balance [32]         473,000
Principal [14],[32]         469,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Lucky Bucks, LLC (Second Out) Hotel, Gaming & Leisure Interest Rate 13.03% Reference Rate and Spread SOFR + 7.65% Floor 1.00% Maturity 10/2/2029          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     853,000    
Fair Value, Ending Balance [32]         853,000
Principal [14],[32]         892,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Luminii LLC (Revolver) Construction & Building Interest Rate 12.65% Reference Rate and Spread SOFR + 7.35% Floor 1.00% Maturity 4/11/2025          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [10],[17] 343,000   343,000    
Principal [10],[13],[17] 343,000   343,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Luminii LLC (Revolver) Construction & Building Interest Rate 12.74% Reference Rate and Spread SOFR + 7.35% Floor 1.00% Maturity 4/11/2025          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [8],[32]     343,000    
Fair Value, Ending Balance [8],[32]         343,000
Principal [8],[14],[32]         343,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Luminii LLC Construction & Building Interest Rate 12.65% Reference Rate and Spread SOFR + 7.35% Floor 1.00% Maturity 4/11/2025          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 5,903,000   5,903,000    
Principal [13],[17] 5,903,000   5,903,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Luminii LLC Construction & Building Interest Rate 12.74% Reference Rate and Spread SOFR + 7.25% Floor 1.00% Maturity 4/11/2025          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     5,933,000    
Fair Value, Ending Balance [32]         5,933,000
Principal [14],[32]         5,933,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt MAG DS Corp. Aerospace and Defense Interest Rate 10.93% Reference Rate and Spread SOFR + 5.50% Floor 1.00% Maturity 4/1/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 3,531,000   3,531,000    
Principal [13],[17] 3,644,000   3,644,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt MAG DS Corp. Aerospace and Defense Interest Rate 10.95% Reference Rate and Spread SOFR + 5.50% Floor 1.00% Maturity 4/1/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     3,520,000    
Fair Value, Ending Balance [32]         3,520,000
Principal [14],[32]         3,664,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt MSM Acquisitions, Inc Services: Business Interest Rate 11.35% Reference Rate and Spread SOFR + 6.00% Floor 1.00% Maturity 12/09/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 9,357,000   9,357,000    
Principal [13],[17] 9,902,000   9,902,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt MSM Acquisitions, Inc. Services: Business Interest Rate 11.50% Reference Rate and Spread SOFR + 6.00% Floor 1.00% Maturity 12/9/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     9,423,000    
Fair Value, Ending Balance [32]         9,423,000
Principal [14],[32]         9,828,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Money Transfer Acquisition Inc. Finance Interest Rate 13.69% Reference Rate and Spread SOFR + 8.25% Floor 1.00% Maturity 12/14/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 8,494,000   8,494,000    
Principal [13],[17] 8,672,000   8,672,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Money Transfer Acquisition Inc. Finance Interest Rate 13.71% Reference Rate and Spread SOFR + 8.25% Floor 1.00% Maturity 12/14/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     9,506,000    
Fair Value, Ending Balance [32]         9,506,000
Principal [14],[32]         9,750,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Morae Global Corporation (Revolver) IT Consulting & Other Services Interest Rate 0.50% Floor 2.00% Maturity 10/26/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [8]     (10,000)    
Fair Value, Ending Balance [8]         (10,000)
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Morae Global Corporation (Revolver) IT Consulting & Other Services Reference Rate and Spread SOFR + 8.00% Floor 2.00% Maturity 10/26/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [10] (5,000)   (5,000)    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Morae Global Corporation IT Consulting & Other Services Interest Rate 13.47% Reference Rate and Spread SOFR + 8.00% Floor 2.00% Maturity 10/26/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 2,195,000   2,195,000    
Principal [13],[17] 2,249,000   2,249,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Morae Global Corporation IT Consulting & Other Services Interest Rate 13.53% Reference Rate and Spread SOFR + 8.00% Floor 2.00% Maturity 10/26/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     2,169,000    
Fair Value, Ending Balance [32]         2,169,000
Principal [14],[32]         2,277,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Neptune Bidco US Inc. Media: Broadcasting & Subscription Interest Rate 10.41% Reference Rate and Spread SOFR + 5.00% Floor 0.50% Maturity 4/11/2029          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17],[35] 2,336,000   2,336,000    
Principal [13],[17],[35] 2,475,000   2,475,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Neptune Bidco US Inc. Media: Broadcasting & Subscription Interest Rate 10.51% Reference Rate and Spread SOFR + 5.00% Floor 0.50% Maturity 4/11/2029          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32],[36]     2,279,000    
Fair Value, Ending Balance [32],[36]         2,279,000
Principal [14],[32],[36]         2,488,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Netwrix Corporation (Revolver) High Tech Industries Interest Rate 0.25% Reference Rate and Spread SOFR + 5.00% Floor 0.75% Maturity 6/9/2029          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [8]     (4,000)    
Fair Value, Ending Balance [8]         (4,000)
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Netwrix Corporation (Revolver) High Tech Industries Reference Rate and Spread SOFR + 5.00% Floor 0.75% Maturity 6/9/2029          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [10] (14,000)   (14,000)    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Netwrix Corporation High Tech Industries Interest Rate 10.35% Reference Rate and Spread SOFR + 5.00% Floor 0.75% Maturity 6/9/2029          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 4,219,000   4,219,000    
Principal [13],[17] 4,270,000   4,270,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Netwrix Corporation High Tech Industries Interest Rate 10.39% Reference Rate and Spread SOFR + 5.00% Floor 0.75% Maturity 6/9/2029          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [8],[32]     3,364,000    
Fair Value, Ending Balance [8],[32]         3,364,000
Principal [8],[14],[32]         3,379,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt One Stop Mailing LLC Transportation: Consumer Interest Rate 11.71% Reference Rate and Spread SOFR + 6.25% Floor 1.00% Maturity 4/29/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 7,510,000   7,510,000    
Principal [13],[17] 7,510,000   7,510,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt One Stop Mailing LLC Transportation: Consumer Interest Rate 11.72% Reference Rate and Spread SOFR + 6.25% Floor 1.00% Maturity 4/29/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     7,409,000    
Fair Value, Ending Balance [32]         7,409,000
Principal [14],[32]         7,550,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt PVHC Holding Corp Containers, Packaging and Glass Interest Rate 10.98% Reference Rate and Spread SOFR + 5.50%, 0.75% PIK Floor 2.50% Maturity 2/17/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 2,679,000   2,679,000    
Principal [13],[17] 2,733,000   2,733,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt PVHC Holding Corp Containers, Packaging and Glass Interest Rate 11.75% Reference Rate and Spread SOFR + 5.50%, 0.75% PIK Floor 2.50% Maturity 2/17/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     2,665,000    
Fair Value, Ending Balance [32]         2,665,000
Principal [14],[32]         2,736,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt PhyNet Dermatology LLC Healthcare & Pharmaceuticals Interest Rate 11.82% Reference Rate and Spread SOFR + 6.50% Floor 1.00% Maturity 10/20/2029          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [10] 1,286,000   1,286,000    
Principal [10],[13] 1,301,000   1,301,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt PhyNet Dermatology LLC Healthcare & Pharmaceuticals Interest Rate 11.99% Reference Rate and Spread SOFR + 6.50% Floor 1.00% Maturity 10/20/2029          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [8],[32]     1,287,000    
Fair Value, Ending Balance [8],[32]         1,287,000
Principal [8],[14],[32]         1,307,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Pomeroy Technologies, LLC (Senior A) High Tech Industries Interest Rate 5.17% PIK Maturity 4/4/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance     1,043,000    
Fair Value, Ending Balance         1,043,000
Principal [14]         1,766,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Pomeroy Technologies, LLC (Senior A) High Tech Industries Maturity 4/4/2026          
Summary of Investment Holdings [Line Items]          
Principal [13],[26] 1,813,000   1,813,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Pomeroy Technologies, LLC (Senior B) High Tech Industries Interest Rate 7.00% PIK Maturity 4/4/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [25]     193,000    
Fair Value, Ending Balance [25]         193,000
Principal [14],[25]         1,593,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Pomeroy Technologies, LLC (Senior B) High Tech Industries Maturity 4/4/2026          
Summary of Investment Holdings [Line Items]          
Principal [13],[26] 1,650,000   1,650,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Pomeroy Technologies, LLC (Super Senior A) High Tech Industries Interest Rate 10.00% PIK Maturity 4/4/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance     398,000    
Fair Value, Ending Balance 429,000   429,000   398,000
Principal 444,000 [13]   444,000 [13]   422,000 [14]
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Pomeroy Technologies, LLC (Super Senior B) High Tech Industries Interest Rate 9.00% PIK Maturity 4/4/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance     1,170,000    
Fair Value, Ending Balance 1,113,000   1,113,000   1,170,000
Principal 1,319,000 [13]   1,319,000 [13]   1,261,000 [14]
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Premier Imaging, LLC Healthcare & Pharmaceuticals Interest Rate 11.61% Reference Rate and Spread SOFR + 6.00% Floor 1.00% Maturity 1/2/2025          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     2,471,000    
Fair Value, Ending Balance [32]         2,471,000
Principal [14],[32]         2,570,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Premier Imaging, LLC Healthcare & Pharmaceuticals Interest Rate 13.60% Reference Rate and Spread SOFR + 8.00% Floor 1.00% Maturity 1/2/2025          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 2,437,000   2,437,000    
Principal [13],[17] 2,736,000   2,736,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Priority Holdings, LLC High Tech Industries Interest Rate 11.21% Reference Rate and Spread SOFR + 5.75% Floor 1.00% Maturity 4/22/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     5,591,000    
Fair Value, Ending Balance [32]         5,591,000
Principal [14],[32]         5,612,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Project Castle, Inc. Transportation: Cargo Interest Rate 10.80% Reference Rate and Spread SOFR + 5.50% Floor 0.50% Maturity 6/8/2029          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17],[35] 2,719,000   2,719,000    
Principal [13],[17],[35] 3,035,000   3,035,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Project Castle, Inc. Transportation: Cargo Interest Rate 10.90% Reference Rate and Spread SOFR + 5.50% Floor 0.50% Maturity 6/8/2029          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     7,018,000    
Fair Value, Ending Balance [32]         7,018,000
Principal [14],[32]         7,900,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Project Leopard Holdings, Inc. High Tech Industries Interest Rate 10.68% Reference Rate and Spread SOFR + 5.25% Floor 0.50% Maturity 7/20/2029          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17],[35] 5,343,000   5,343,000    
Principal [13],[17],[35] 5,724,000   5,724,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Project Leopard Holdings, Inc. High Tech Industries Interest Rate 10.73% Reference Rate and Spread SOFR + 5.25% Floor 0.50% Maturity 7/20/2029          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32],[36]     7,201,000    
Fair Value, Ending Balance [32],[36]         7,201,000
Principal [14],[32],[36]         7,920,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Qualtek LLC (ABL Exit Facility) High Tech Industries Interest Rate 10.93% Reference Rate and Spread SOFR + 5.50% Maturity 7/14/2024          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [35] 60,000   60,000    
Principal [13],[35] 60,000   60,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Qualtek LLC High Tech Industries Interest Rate 15.39% Reference Rate and Spread SOFR + 1.00%, 9.00% PIK Floor 1.00% Maturity 7/14/2025          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [36]     4,209,000    
Fair Value, Ending Balance [36]         4,209,000
Principal [14],[36]         4,373,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Qualtek LLC High Tech Industries Maturity 7/14/2025          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17],[26],[35] 634,000   634,000    
Principal [13],[17],[26],[35] 4,575,000   4,575,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Radiology Partners, Inc Healthcare & Pharmaceuticals Interest Rate 10.18% Reference Rate and Spread SOFR + 4.25% Maturity 7/9/2025          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32],[36]     5,654,000    
Fair Value, Ending Balance [32],[36]         5,654,000
Principal [14],[32],[36]         6,966,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Radius Aerospace, Inc. Aerospace and Defense Interest Rate 11.23% Reference Rate and Spread SOFR + 5.75% Maturity 3/29/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 6,050,000   6,050,000    
Principal [13],[17] 6,096,000   6,096,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Radius Aerospace, Inc. Aerospace and Defense Interest Rate 11.25% Reference Rate and Spread SOFR + 5.75% Floor 1.00% Maturity 3/29/2025          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     6,064,000    
Fair Value, Ending Balance [32]         6,064,000
Principal [14],[32]         6,131,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Reception Purchaser, LLC Transportation: Cargo Interest Rate 11.48% Reference Rate and Spread SOFR + 6.00% Floor 0.75% Maturity 3/24/2028          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17],[35] 3,356,000   3,356,000    
Principal [13],[17],[35] 4,416,000   4,416,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Reception Purchaser, LLC Transportation: Cargo Interest Rate 11.50% Reference Rate and Spread SOFR + 6.00% Floor 0.75% Maturity 3/24/2028          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32],[36]     3,285,000    
Fair Value, Ending Balance [32],[36]         3,285,000
Principal [14],[32],[36]         4,439,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Riskonnect Parent LLC Application Software Interest Rate 10.98% Reference Rate and Spread SOFR + 5.50% Floor 0.75% Maturity 12/7/2028          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [10],[17] 1,153,000   1,153,000    
Principal [10],[13],[17] 1,222,000   1,222,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Robertshaw US Holding Corp. Capital Equipment Interest Rate 15.95% Reference Rate and Spread SOFR + 1.10%, 9.50% PIK Floor 1.00% Maturity 9/23/2024          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance 146,000   146,000    
Principal [13] 146,000   146,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt South Street Securities Holdings, Inc Banking, Finance, Insurance & Real Estate Interest Rate 9.00% Maturity 9/20/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance     2,528,000    
Fair Value, Ending Balance 2,418,000   2,418,000   2,528,000
Principal 3,150,000 [13]   3,150,000 [13]   3,150,000 [14]
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Sundance Holdings Group, LLC Retail Interest Rate 14.93% Reference Rate and Spread SOFR + 8.00%, 1.50% PIK Maturity 6/30/2025          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 6,184,000   6,184,000    
Principal [13],[17] 6,627,000   6,627,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Sundance Holdings Group, LLC Retail Interest Rate 23.03% Reference Rate and Spread SOFR + 8.00%, 9.50% PIK Floor 1.00% Maturity 5/1/2024          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     6,313,000    
Fair Value, Ending Balance [32]         6,313,000
Principal [14],[32]         6,528,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Symplr Software, Inc. Healthcare & Pharmaceuticals Interest Rate 9.93% Reference Rate and Spread SOFR + 4.50% Floor 0.75% Maturity 12/22/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17],[35] 1,561,000   1,561,000    
Principal [13],[17],[35] 1,662,000   1,662,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Symplr Software, Inc. Healthcare & Pharmaceuticals Interest Rate 9.98% Reference Rate and Spread SOFR + 4.50% Floor 0.75% Maturity 12/22/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32],[36]     1,502,000    
Fair Value, Ending Balance [32],[36]         1,502,000
Principal [14],[32],[36]         1,670,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Synamedia Americas Holdings, Inc. Interactive Media & Services Interest Rate 13.08% Reference Rate and Spread SOFR + 7.75% Floor 1.00% Maturity 12/5/2028          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 2,606,000   2,606,000    
Principal [13],[17] 2,679,000   2,679,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Synamedia Americas Holdings, Inc. Interactive Media & Services Interest Rate 13.10% Reference Rate and Spread SOFR + 7.75% Floor 1.00% Maturity 12/5/2028          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     2,662,000    
Fair Value, Ending Balance [32]         2,662,000
Principal [14],[32]         2,759,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt TA/WEG Holdings, LLC Banking, Finance, Insurance & Real Estate Interest Rate 10.83% Reference Rate and Spread SOFR + 5.50% Floor 1.00% Maturity 10/2/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 9,591,000   9,591,000    
Principal [13],[17] 9,592,000   9,592,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt TA/WEG Holdings, LLC Banking, Finance, Insurance & Real Estate Interest Rate 10.99% Reference Rate and Spread SOFR + 5.50% Floor 1.00% Maturity 10/2/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [8],[32]     12,092,000    
Fair Value, Ending Balance [8],[32]         12,092,000
Principal [8],[14],[32]         12,092,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt TLE Holdings, LLC Healthcare, Education and Childcare Interest Rate 10.94% Reference Rate and Spread SOFR + 5.50% Floor 1.00% Maturity 6/29/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 6,133,000   6,133,000    
Principal [13],[17] 6,147,000   6,147,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt TLE Holdings, LLC Healthcare, Education and Childcare Interest Rate 10.96% Reference Rate and Spread SOFR + 5.50% Floor 1.00% Maturity 6/28/2024          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     6,162,000    
Fair Value, Ending Balance [32]         6,162,000
Principal [14],[32]         6,180,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Tactical Air Support, Inc. Aerospace and Defense Interest Rate 13.96% Reference Rate and Spread SOFR + 8.50% Floor 1.00% Maturity 12/22/2028          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [8],[32]     1,671,000    
Fair Value, Ending Balance [8],[32]         1,671,000
Principal [8],[14],[32]         1,714,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Tactical Air Support, Inc. Aerospace and Defense Interest Rate 13.97% Reference Rate and Spread SOFR + 8.50% Floor 1.00% Maturity 12/22/2028          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [10],[17] 1,674,000   1,674,000    
Principal [10],[13],[17] 1,714,000   1,714,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt VBC Spine Opco LLC (DxTx Pain and Spine LLC) (Revolver) Healthcare & Pharmaceuticals Interest Rate 13.52% Reference Rate and Spread SOFR + 8.00% Floor 2.00% Maturity 6/14/2028          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [8]     124,000    
Fair Value, Ending Balance [8]         124,000
Principal [8],[14]         129,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt VBC Spine Opco LLC (DxTx Pain and Spine LLC) (Revolver) Healthcare & Pharmaceuticals Reference Rate and Spread SOFR + 8.00% Floor 2.00% Maturity 6/14/2028          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [10] (8,000)   (8,000)    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt VBC Spine Opco LLC (DxTx Pain and Spine LLC) Healthcare & Pharmaceuticals Interest Rate 13.47% Reference Rate and Spread SOFR + 8.00% Floor 2.00% Maturity 6/14/2028          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [10] 4,516,000   4,516,000    
Principal [10],[13] 4,624,000   4,624,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt VBC Spine Opco LLC (DxTx Pain and Spine LLC) Healthcare & Pharmaceuticals Interest Rate 13.54% Reference Rate and Spread SOFR + 8.00% Floor 2.00% Maturity 6/14/2028          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [8],[32]     3,432,000    
Fair Value, Ending Balance [8],[32]         3,432,000
Principal [8],[14],[32]         3,500,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Wonder Love, Inc. Media: Diversified & Production Interest Rate 10.33% Reference Rate and Spread SOFR + 5.00% Floor 1.00% Maturity 11/18/2024          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 375,000   375,000    
Principal [13],[17] 375,000   375,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies First Lien/Senior Secured Debt Wonder Love, Inc. Media: Diversified & Production Interest Rate 10.35% Reference Rate and Spread SOFR + 5.00% Floor 1.00% Maturity 11/18/2024          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     1,124,000    
Fair Value, Ending Balance [32]         1,124,000
Principal [14],[32]         1,125,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Preferred Stock and Units          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance     6,518,000    
Fair Value, Ending Balance $ 7,688,000   7,688,000   6,518,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Preferred Stock and Units 4L Ultimate Topco Corporation Services: Business          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance     $ 29,000    
Fair Value, Ending Balance         $ 29,000
Investment in number of units 321 [13]   321 [13]   321 [14]
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Preferred Stock and Units AAPC Holdings, LLC Healthcare & Pharmaceuticals Interest Rate 18.00% PIK          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [9],[24]     $ 195,000    
Fair Value, Ending Balance $ 211,000 [11],[23]   $ 211,000 [11],[23]   $ 195,000 [9],[24]
Investment in number of units 146,214 [11],[13],[23]   146,214 [11],[13],[23]   146,214 [9],[14],[24]
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Preferred Stock and Units Advantage Capital Holdings LLC Banking, Finance, Insurance & Real Estate Interest Rate 12.50% PIK          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [24],[32]     $ 2,733,000    
Fair Value, Ending Balance $ 2,626,000 [11],[23]   $ 2,626,000 [11],[23]   $ 2,733,000 [24],[32]
Investment in number of units 2,626,574 [11],[13],[23]   2,626,574 [11],[13],[23]   2,470,210 [14],[24],[32]
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Preferred Stock and Units Aperture Dodge 18 LLC Banking, Finance, Insurance & Real Estate          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance     $ 3,237,000    
Fair Value, Ending Balance $ 3,361,000   $ 3,361,000   $ 3,237,000
Investment in number of units 3,067,908 [13]   3,067,908 [13]   3,067,908 [14]
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Preferred Stock and Units Epilog Partners SPV III, LLC (Care Connectors Medical Group) Healthcare & Pharmaceuticals          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [11] $ 1,166,000   $ 1,166,000    
Investment in number of units [11],[13] 1,166,667   1,166,667    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Preferred Stock and Units Prosper Marketplace Consumer goods: Durable          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [38]     $ 324,000    
Fair Value, Ending Balance $ 324,000 [39]   $ 324,000 [39]   $ 324,000 [38]
Investment in number of units 912,865 [13],[39]   912,865 [13],[39]   912,865 [14],[38]
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Second Lien/Senior Secured Debt          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance     $ 37,694,000    
Fair Value, Ending Balance $ 32,434,000   32,434,000   $ 37,694,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Second Lien/Senior Secured Debt American Academy Holdings, LLC Healthcare & Pharmaceuticals Interest Rate 14.50% PIK Maturity 3/1/2028          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     5,237,000    
Fair Value, Ending Balance 5,946,000   5,946,000   5,237,000 [32]
Principal 6,343,000 [13]   6,343,000 [13]   5,909,000 [14],[32]
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Second Lien/Senior Secured Debt Confluence Technologies, Inc. Services: Business Interest Rate 11.98% Reference Rate and Spread SOFR + 6.50% Floor 0.50% Maturity 7/23/2029          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 3,579,000   3,579,000    
Principal [13],[17] 4,000,000   4,000,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Second Lien/Senior Secured Debt Confluence Technologies, Inc. Services: Business Interest Rate 12.00% Reference Rate and Spread SOFR + 6.50% Floor 0.50% Maturity 7/23/2029          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     3,605,000    
Fair Value, Ending Balance [32]         3,605,000
Principal [14],[32]         4,000,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Second Lien/Senior Secured Debt Dcert Buyer, Inc. High Tech Industries Interest Rate 12.34% Reference Rate and Spread SOFR + 7.00% Maturity 2/16/2029          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17],[35] 4,847,000   4,847,000    
Principal [13],[17],[35] 5,400,000   5,400,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Second Lien/Senior Secured Debt Dcert Buyer, Inc. High Tech Industries Interest Rate 12.36% Reference Rate and Spread SOFR + 7.00% Maturity 2/16/2029          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32],[36]     4,941,000    
Fair Value, Ending Balance [32],[36]         4,941,000
Principal [14],[32],[36]         5,400,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Second Lien/Senior Secured Debt Global Tel*Link Corporation Telecommunications Interest Rate 15.44% Reference Rate and Spread SOFR + 10.00% Maturity 11/29/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17],[35] 1,449,000   1,449,000    
Principal [13],[17],[35] 1,500,000   1,500,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Second Lien/Senior Secured Debt Global Tel*Link Corporation Telecommunications Interest Rate 15.53% Reference Rate and Spread SOFR + 10.00% Maturity 11/29/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32],[36]     1,336,000    
Fair Value, Ending Balance [32],[36]         1,336,000
Principal [14],[32],[36]         1,500,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Second Lien/Senior Secured Debt Idera, Inc. High Tech Industries Interest Rate 12.23% Reference Rate and Spread SOFR + 6.75% Floor 0.75% Maturity 2/4/2029          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17] 3,950,000   3,950,000    
Principal [13],[17] 4,024,000   4,024,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Second Lien/Senior Secured Debt Idera, Inc. High Tech Industries Interest Rate 12.28% Reference Rate and Spread SOFR + 6.75% Floor 0.75% Maturity 2/4/2029          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     5,811,000    
Fair Value, Ending Balance [32]         5,811,000
Principal [14],[32]         6,000,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Second Lien/Senior Secured Debt Ivanti Software, Inc. High Tech Industries Interest Rate 12.81% Reference Rate and Spread SOFR + 7.25% Floor 0.50% Maturity 12/1/2028          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17],[35] 3,948,000   3,948,000    
Principal [13],[17],[35] 6,000,000   6,000,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Second Lien/Senior Secured Debt Ivanti Software, Inc. High Tech Industries Interest Rate 12.91% Reference Rate and Spread SOFR + 7.25% Floor 0.50% Maturity 12/1/2028          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32]     4,870,000    
Fair Value, Ending Balance [32]         4,870,000
Principal [14],[32]         6,000,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Second Lien/Senior Secured Debt Phoenix Guarantor Inc. Healthcare & Pharmaceuticals Interest Rate 13.97% Reference Rate and Spread SOFR + 8.50% Floor 1.00% Maturity 3/5/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32],[36]     1,131,000    
Fair Value, Ending Balance [32],[36]         1,131,000
Principal [14],[32],[36]         1,200,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Second Lien/Senior Secured Debt Project Leopard Holdings, Inc. High Tech Industries Interest Rate 13.08% Reference Rate and Spread SOFR + 7.75% Floor 0.50% Maturity 7/20/2030          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance 4,793,000   4,793,000    
Principal [13] 5,000,000   5,000,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Second Lien/Senior Secured Debt Project Leopard Holdings, Inc. High Tech Industries Interest Rate 13.13% Reference Rate and Spread SOFR + 7.75% Floor 0.50% Maturity 7/20/2030          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [36]     4,719,000    
Fair Value, Ending Balance [36]         4,719,000
Principal [14],[36]         5,000,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Second Lien/Senior Secured Debt Qualtek LLC High Tech Industries Interest Rate 15.39% Reference Rate and Spread SOFR + 1.00%, 9.00% PIK Floor 1.00% Maturity 1/14/2027          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32],[36]     2,913,000    
Fair Value, Ending Balance [32],[36]         2,913,000
Principal [14],[32],[36]         4,146,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Second Lien/Senior Secured Debt Qualtek LLC High Tech Industries Maturity 1/14/2027          
Summary of Investment Holdings [Line Items]          
Principal [13],[17],[26],[35] 4,338,000   4,338,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Second Lien/Senior Secured Debt Redstone Holdco 2 LP High Tech Industries Interest Rate 13.21% Reference Rate and Spread SOFR + 7.75% Floor 0.75% Maturity 4/16/2029          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [17],[35] 3,744,000   3,744,000    
Principal [13],[17],[35] 4,566,000   4,566,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Second Lien/Senior Secured Debt Redstone Holdco 2 LP High Tech Industries Interest Rate 13.22% Reference Rate and Spread SOFR + 7.75% Floor 0.75% Maturity 4/16/2029          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [32],[36]     2,831,000    
Fair Value, Ending Balance [32],[36]         2,831,000
Principal [14],[32],[36]         4,566,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Second Lien/Senior Secured Debt Robertshaw US Holding Corp. Capital Equipment Interest Rate 13.45% Reference Rate and Spread SOFR + 8.00% Floor 1.00% Maturity 2/28/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance     300,000    
Fair Value, Ending Balance         300,000
Principal [14]         3,000,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Second Lien/Senior Secured Debt Robertshaw US Holding Corp. Capital Equipment Maturity 2/28/2026          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [26] 178,000   178,000    
Principal [13],[26] 3,000,000   3,000,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Subordinated Debt          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance     1,181,000    
Fair Value, Ending Balance 1,693,000   1,693,000   1,181,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Subordinated Debt DeltaDx Limited, LP (Money Transfer Acquisition Inc.) Finance Interest Rate 15.00% PIK Maturity 6/30/2028          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance 483,000   483,000    
Principal [13] 484,000   484,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Subordinated Debt Lucky Bucks Holdings LLC Hotel, Gaming & Leisure Interest Rate 12.50% PIK Maturity 5/29/2028          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [25]     1,181,000    
Fair Value, Ending Balance [25]         1,181,000
Principal [14],[25]         6,198,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Subordinated Debt Lucky Bucks Holdings LLC Hotel, Gaming & Leisure Maturity 5/29/2028          
Summary of Investment Holdings [Line Items]          
Fair Value, Ending Balance [26] 1,210,000   1,210,000    
Principal [13],[26] 6,258,000   6,258,000    
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Subordinated Debt TRSO II, Inc. Energy: Oil & Gas Interest Rate 1.69% PIK Maturity 1/24/2025          
Summary of Investment Holdings [Line Items]          
Principal [14],[25]         75,000
Investment, Identifier [Axis]: Investments in Non-Control, Non-Affiliate Portfolio Companies Subordinated Debt TRSO II, Inc. Energy: Oil & Gas Maturity 1/24/2025          
Summary of Investment Holdings [Line Items]          
Principal [13],[26] 76,000   76,000    
Investment, Identifier [Axis]: Non-controlled affiliated investments BMP Slappey Holdco, LLC Industry Classification – Telecommunications          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [2],[3],[40]     553,000 464,000 464,000
Net Change in Unrealized Gain/(Loss) [2],[3],[40]         89,000
Fair Value, Ending Balance [2],[3],[40]         553,000
Principal [2],[3],[40]         200,000,000
Investment, Identifier [Axis]: Non-controlled affiliated investments BMP Slappey Holdco, LLC Type of Investment Preferred Stock and Units Industry Classification - Telecommunications          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [5],[7],[41]     553,000    
Net Change in Unrealized Gain/(Loss) [5],[7],[41]     32,000    
Fair Value, Ending Balance [5],[7],[41] 585,000   585,000   553,000
Principal [5],[7],[41] 200,000   200,000    
Investment, Identifier [Axis]: Non-controlled affiliated investments BMP Slappey Investment II Industry Classification – Telecommunications          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [2],[3],[40]     246,000 206,000 206,000
Net Change in Unrealized Gain/(Loss) [2],[3],[40]         40,000
Fair Value, Ending Balance [2],[3],[40]         246,000
Principal [2],[3],[40]         88,946,000
Investment, Identifier [Axis]: Non-controlled affiliated investments BMP Slappey Investment II Type of Investment Preferred Stock and Units Industry Classification - Telecommunications          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [5],[7],[41]     246,000    
Net Change in Unrealized Gain/(Loss) [5],[7],[41]     14,000    
Fair Value, Ending Balance [5],[7],[41] 260,000   260,000   246,000
Principal [5],[7],[41] 88,946   88,946    
Investment, Identifier [Axis]: Non-controlled affiliated investments EBSC Holdings LLC (Riddell, Inc.) Type of Investment Preferred Stock and Units Industry Classification - Consumer goods: Durable          
Summary of Investment Holdings [Line Items]          
Purchases/ (sales) of or Advances/ (Distributions) [5],[7],[41]     2,023,000    
Net Change in Unrealized Gain/(Loss) [5],[7],[41]     5,000    
Fair Value, Ending Balance [5],[7],[41] 2,028,000   2,028,000    
Principal [5],[7],[41] 2,049,315   2,049,315    
Interest and Fee Income [5],[7],[41]     50,000    
Investment, Identifier [Axis]: Non-controlled affiliated investments GreenPark Infrastructure, LLC - Series A Industry Classification - Energy: Electricity          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [2],[3],[40]     500,000 500,000 500,000
Fair Value, Ending Balance [2],[3],[40]         500,000
Principal [2],[3],[40]         1,000,000
Investment, Identifier [Axis]: Non-controlled affiliated investments GreenPark Infrastructure, LLC - Series A Type of Investment Preferred Stock and Units Industry Classification - Energy: Electricity          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [5],[7],[41]     500,000    
Fair Value, Ending Balance [5],[7],[41] 500,000   500,000   500,000
Principal [5],[7],[41] 1,000   1,000    
Investment, Identifier [Axis]: Non-controlled affiliated investments GreenPark Infrastructure, LLC - Series M-1 Industry Classification - Energy: Electricity One          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [2],[3],[40]     171,000 171,000 171,000
Fair Value, Ending Balance [2],[3],[40]         171,000
Principal [2],[3],[40]         500,000
Investment, Identifier [Axis]: Non-controlled affiliated investments GreenPark Infrastructure, LLC - Series M-1 Type of Investment Common Stock and Membership Units Industry Classification - Energy: Electricity          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [5],[7],[41]     171,000    
Fair Value, Ending Balance [5],[7],[41] 171,000   171,000   171,000
Principal [5],[7],[41] 500   500    
Investment, Identifier [Axis]: Non-controlled affiliated investments Kleen-Tech Acquisition, LLC Industry Classification - Services: Business          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [2],[3],[40]     998,000 1,300,000 1,300,000
Net Change in Unrealized Gain/(Loss) [2],[3],[40]         (302,000)
Fair Value, Ending Balance [2],[3],[40]         998,000
Principal [2],[3],[40]         250,000,000
Investment, Identifier [Axis]: Non-controlled affiliated investments Kleen-Tech Acquisition, LLC Type of Investment Common Stock Industry Classification - Services: Business          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [5],[7],[41]     998,000    
Fair Value, Ending Balance [5],[7],[41]         998,000
Investment, Identifier [Axis]: Non-controlled affiliated investments Navex Topco, Inc. Industry Classification – Electronics          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [2],[40]       7,604,000 7,604,000
Purchases/ (sales) of or Advances/ (Distributions) [2],[40]         (7,700,000)
Net Accretion [2],[40]         310,000
Net Change in Unrealized Gain/(Loss) [2],[40]         (214,000)
Interest and Fee Income [2],[40]         804,000
Investment, Identifier [Axis]: Non-controlled affiliated investments Northeast Metal Works LLC - Class O Preferred Industry Classification - Metals & Mining Three          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [2],[3],[40]     4,182,000    
Transfers In (Out) of Affiliates [2],[3],[40]         4,500,000
Net Change in Unrealized Gain/(Loss) [2],[3],[40]         (318,000)
Fair Value, Ending Balance [2],[3],[40]         4,182,000
Principal [2],[3],[40]         4,500,000,000
Interest and Fee Income [2],[3],[40]         333,000
Investment, Identifier [Axis]: Non-controlled affiliated investments Northeast Metal Works LLC - Class O Preferred Type of Investment Preferred Stock and Units Industry Classification - Metals & Mining          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [5],[7],[41]     4,182,000    
Purchases/ (sales) of or Advances/ (Distributions) [5],[7],[41]     450,000    
Net Change in Unrealized Gain/(Loss) [5],[7],[41]     (2,592,000)    
Fair Value, Ending Balance [5],[7],[41] 2,040,000   2,040,000   4,182,000
Principal [5],[7],[41] 4,950,000   4,950,000    
Interest and Fee Income [5],[7],[41]     235,000    
Investment, Identifier [Axis]: Non-controlled affiliated investments Northeast Metal Works LLC - Preferred Industry Classification - Metals & Mining One          
Summary of Investment Holdings [Line Items]          
Principal [2],[3],[40]         2,368,000
Investment, Identifier [Axis]: Non-controlled affiliated investments Northeast Metal Works LLC - Preferred Type of Investment Preferred Stock and Units Industry Classification - Metals & Mining          
Summary of Investment Holdings [Line Items]          
Principal [5],[7],[41] 2,368   2,368    
Investment, Identifier [Axis]: Non-controlled affiliated investments Northeast Metal Works LLC Industry Classification - Metals & Mining          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [2],[40]       13,445,000 13,445,000
Purchases/ (sales) of or Advances/ (Distributions) [2],[40]         (4,428,000)
Transfers In (Out) of Affiliates [2],[40]         (9,000,000)
Net Change in Unrealized Gain/(Loss) [2],[40]         1,107,000
Realized Gain/(Loss) [2],[40]         (1,124,000)
Interest and Fee Income [2],[40]         377,000
Investment, Identifier [Axis]: Non-controlled affiliated investments Northeast Metal Works LLC Industry Classification - Metals & Mining Three          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [2],[40]     3,560,000    
Transfers In (Out) of Affiliates [2],[40]         4,500,000
Net Change in Unrealized Gain/(Loss) [2],[40]         (940,000)
Fair Value, Ending Balance [2],[40]         3,560,000
Principal [2],[40]         4,500,000
Interest and Fee Income [2],[40]         270,000
Investment, Identifier [Axis]: Non-controlled affiliated investments Northeast Metal Works LLC Type of Investment Subordinated Debt Industry Classification - Metals & Mining          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [5],[41]     3,560,000    
Net Change in Unrealized Gain/(Loss) [5],[41]     (108,000)    
Fair Value, Ending Balance [5],[41] 3,452,000   3,452,000   3,560,000
Principal [5],[41] 4,500,000   4,500,000    
Interest and Fee Income [5],[41]     182,000    
Investment, Identifier [Axis]: Non-controlled affiliated investments Northeast Metal Works LLC Type of Investment Subordinated Debt One Industry Classification - Metals & Mining          
Summary of Investment Holdings [Line Items]          
Purchases/ (sales) of or Advances/ (Distributions) [5],[41]     500,000    
Fair Value, Ending Balance [5],[41] 500,000   500,000    
Principal [5],[41] 500,000   500,000    
Interest and Fee Income [5],[41]     15,000    
Investment, Identifier [Axis]: Non-controlled affiliated investments PMP OPCO, LLC ((Princeton Medspa Partners, LLC) Type of Investment First Lien/Senior Secured Debt Industry Classification - Healthcare & Pharmaceuticals          
Summary of Investment Holdings [Line Items]          
Purchases/ (sales) of or Advances/ (Distributions) [5],[41]     1,643,000    
Fair Value, Ending Balance [5],[41] 1,643,000   1,643,000    
Principal [5],[41] 1,688,000   1,688,000    
Interest and Fee Income [5],[41]     21,000    
Investment, Identifier [Axis]: Non-controlled affiliated investments PMP OPCO, LLC (Princeton Medspa Partners, LLC) (Revolver) Type of Investment First Lien/Senior Secured Debt Industry Classification - Healthcare & Pharmaceuticals          
Summary of Investment Holdings [Line Items]          
Purchases/ (sales) of or Advances/ (Distributions) [5],[41]     (4,000)    
Fair Value, Ending Balance [5],[41] (4,000)   (4,000)    
Investment, Identifier [Axis]: Non-controlled affiliated investments Princeton Medspa Partners, LLC - Put Option Type of Investment Derivatives Industry Classification - Healthcare & Pharmaceuticals          
Summary of Investment Holdings [Line Items]          
Principal [5],[6],[7],[41] 1,000,000   1,000,000    
Investment, Identifier [Axis]: Non-controlled affiliated investments Princeton Medspa Partners, LLC Type of Investment Preferred Stock and Units Industry Classification - Healthcare & Pharmaceuticals          
Summary of Investment Holdings [Line Items]          
Purchases/ (sales) of or Advances/ (Distributions) [5],[7],[41]     1,000,000    
Fair Value, Ending Balance [5],[7],[41] 1,000,000   1,000,000    
Principal [5],[7],[41] 1,000,000   1,000,000    
Interest and Fee Income [5],[7],[41]     11,000    
Investment, Identifier [Axis]: Non-controlled affiliated investments Princeton Medspa Partners, LLC – Warrant Type of Investment Common Stock and Membership Units Industry Classification - Healthcare & Pharmaceuticals          
Summary of Investment Holdings [Line Items]          
Principal [5],[7],[41] 0   0    
Investment, Identifier [Axis]: Non-controlled affiliated investments Riddell, Inc. Type of Investment First Lien/Senior Secured Debt Industry Classification - Consumer goods: Durable          
Summary of Investment Holdings [Line Items]          
Purchases/ (sales) of or Advances/ (Distributions) [5],[41],[42]     6,211,000    
Net Accretion [5],[41],[42]     5,000    
Net Change in Unrealized Gain/(Loss) [5],[41],[42]     (5,000)    
Fair Value, Ending Balance [5],[41],[42] 6,211,000   6,211,000    
Principal [5],[41],[42] 6,324,000   6,324,000    
Interest and Fee Income [5],[41],[42]     188,000    
Investment, Identifier [Axis]: Non-controlled affiliated investments Series A-Great Lakes Funding II LLC Industry Classification - Joint Venture          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [2],[3],[40],[43]     45,012,000 40,287,000 40,287,000
Purchases/ (sales) of or Advances/ (Distributions) [2],[3],[40],[43]         2,565,000
Net Change in Unrealized Gain/(Loss) [2],[3],[40],[43]         2,160,000
Fair Value, Ending Balance [2],[3],[40],[43]         45,012,000
Principal [2],[3],[40],[43]         44,000,000
Total dividend income [2],[3],[40],[43]         6,764,000
Investment, Identifier [Axis]: Non-controlled affiliated investments Series A-Great Lakes Funding II LLC Type of Investment Joint Ventures Industry Classification - Joint Venture          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [5],[6],[7],[41],[44]     45,012,000    
Purchases/ (sales) of or Advances/ (Distributions) [5],[6],[7],[41],[44]     (4,671,000)    
Net Change in Unrealized Gain/(Loss) [5],[6],[7],[41],[44]     404,000    
Fair Value, Ending Balance [5],[6],[7],[41],[44] 40,745,000   40,745,000   45,012,000
Principal [5],[6],[7],[41],[44] 39,329   39,329    
Total dividend income [5],[6],[7],[41],[44]     3,453,000    
Investment, Identifier [Axis]: Non-controlled affiliated investments Surge Hippodrome Holdings LLC Industry Classification - Services: Business          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [2],[3],[40]       484,000 484,000
Purchases/ (sales) of or Advances/ (Distributions) [2],[3],[40]         (496,000)
Net Change in Unrealized Gain/(Loss) [2],[3],[40]         (325,000)
Realized Gain/(Loss) [2],[3],[40]         337,000
Investment, Identifier [Axis]: Non-controlled affiliated investments Surge Hippodrome Holdings LLC Industry Classification - Services: Business One          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [2],[40]       5,165,000 5,165,000
Purchases/ (sales) of or Advances/ (Distributions) [2],[40]         (5,460,000)
Net Accretion [2],[40]         328,000
Net Change in Unrealized Gain/(Loss) [2],[40]         (33,000)
Interest and Fee Income [2],[40]         675,000
Investment, Identifier [Axis]: Non-controlled affiliated investments Surge Hippodrome Partners LP Industry Classification - Services: Business          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [2],[3],[40]       811,000 811,000
Purchases/ (sales) of or Advances/ (Distributions) [2],[3],[40]         (813,000)
Net Change in Unrealized Gain/(Loss) [2],[3],[40]         (386,000)
Realized Gain/(Loss) [2],[3],[40]         388,000
Investment, Identifier [Axis]: Non-controlled affiliated investments Zest Acquisition Corp. Industry Classification - Healthcare, Education and Childcare          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [2],[40]       3,390,000 3,390,000
Purchases/ (sales) of or Advances/ (Distributions) [2],[40]         (3,501,000)
Net Accretion [2],[40]         9,000
Net Change in Unrealized Gain/(Loss) [2],[40]         102,000
Interest and Fee Income [2],[40]         42,000
Investment, Identifier [Axis]: Total Controlled investments          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [5]     14,318,000    
Purchases/ (sales) of or Advances/ (Distributions) [5]     (969,000)    
Net Change in Unrealized Gain/(Loss) [5]     6,842,000    
Realized Gain/(Loss) [5]     (6,644,000)    
Fair Value, Ending Balance [5] 13,547,000   13,547,000   14,318,000
Investment, Identifier [Axis]: Total controlled investments          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance [2]     14,318,000 18,953,000 18,953,000
Purchases/ (sales) of or Advances/ (Distributions) [2]         (248,000)
Net Change in Unrealized Gain/(Loss) [2]         (4,354,000)
Realized Gain/(Loss) [2]         (33,000)
Fair Value, Ending Balance [2]         14,318,000
Total dividend income [2]         2,184,000
Investment, Identifier [Axis]: Total controlled investments ProAir LLC Type of Investment Subordinated Debt Industry Classification - Capital Equipment          
Summary of Investment Holdings [Line Items]          
Principal [5],[6] 2,020,000   2,020,000    
Investment, Identifier [Axis]: Total non-controlled affiliated and controlled investments          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance     69,540,000 [5] 92,780,000 [2] 92,780,000 [2]
Purchases/ (sales) of or Advances/ (Distributions)     6,183,000 [5]   (20,081,000) [2]
Net Accretion     5,000 [5]   647,000 [2]
Net Change in Unrealized Gain/(Loss)     4,927,000 [5]   (3,374,000) [2]
Realized Gain/(Loss)     (6,644,000) [5]   (432,000) [2]
Fair Value, Ending Balance [5] 74,011,000   74,011,000   69,540,000
Interest and Fee Income     702,000 [5]   2,501,000 [2]
Total dividend income     3,453,000 [5]   8,948,000 [2]
Investment, Identifier [Axis]: Total non-controlled affiliated investments          
Summary of Investment Holdings [Line Items]          
Fair Value, Beginning Balance     55,222,000 [5],[41] $ 73,827,000 [2],[40] 73,827,000 [2],[40]
Purchases/ (sales) of or Advances/ (Distributions)     7,152,000 [5],[41]   (19,833,000) [2],[40]
Net Accretion     5,000 [5],[41]   647,000 [2],[40]
Net Change in Unrealized Gain/(Loss)     (1,915,000) [5],[41]   980,000 [2],[40]
Realized Gain/(Loss) [2],[40]         (399,000)
Fair Value, Ending Balance [5],[41] 60,464,000   60,464,000   55,222,000
Interest and Fee Income     702,000 [5],[41]   2,501,000 [2],[40]
Total dividend income     3,453,000 [5],[41]   $ 6,764,000 [2],[40]
Investment, Identifier [Axis]: Total non-controlled affiliated investments Kleen-Tech Acquisition, LLC Type of Investment Common Stock Industry Classification - Services: Business          
Summary of Investment Holdings [Line Items]          
Net Change in Unrealized Gain/(Loss) [5],[7],[41]     335,000    
Fair Value, Ending Balance [5],[7],[41] 1,333,000   1,333,000    
Principal [5],[7],[41] $ 250,000   $ 250,000    
[1] As defined in the 1940 Act, the Company is deemed to be both an “Affiliated Person” and has “Control” of this portfolio company as the Company owns more than 25% of the portfolio company’s outstanding voting securities or has the power to exercise control over management or policies of such portfolio company.
[2] Fair value of this investment was determined using significant unobservable inputs, unless otherwise noted.
[3] Number of shares held.
[4] Non-qualified asset for purposes of section 55(a) of the Investment Company Act of 1940.
[5] Fair value of this investment was determined using significant unobservable inputs, unless otherwise noted.
[6] Non-qualified asset for purposes of section 55(a) of the Investment Company Act of 1940.
[7] Number of shares held.
[8] Debt security has an unfunded commitment in addition to the amounts shown in the Consolidated Schedule of Investments. See Note 8 for additional information on the Company’s commitments and contingencies.
[9] This investment is held by PTMN Sub Holdings LLC, one of the company's taxable blocker subsidiaries.
[10] Debt security has an unfunded commitment in addition to the amounts shown in the Consolidated Schedule of Investments. See Note 8 for additional information on the Company’s commitments and contingencies.
[11] This investment is held by PTMN Sub Holdings LLC, one of the Company's taxable blocker subsidiaries.
[12] This investment is owned by HCAP Equity Holdings, LLC, one of the Company’s taxable blocker subsidiaries.
[13] Par amount is presented for debt investments, while the number of shares or units owned is presented for equity investments.
[14] Par amount is presented for debt investments, while the number of shares or units owned is presented for equity investments.
[15] This investment is owned by HCAP Equity Holdings, LLC, one of the Company’s taxable blocker subsidiaries.
[16] The investment is treated as a non-qualifying asset under Section 55(a) of the 1940 Act. Under the 1940 Act, we may not acquire any non-qualifying asset unless, at the time the acquisition is made, qualifying assets represent at least 70% of our total assets. As of June 30, 2024, qualifying assets represent 86.1% of the Company's total assets and non-qualifying assets represent 13.9% of the Company's total assets.
[17] As of June 30, 2024, this investment is pledged to secure the Company’s debt obligations.
[18] Non-voting.
[19] The investment is held at the NAV of the underlying fund.
[20] The investment is treated as a non-qualifying asset under Section 55(a) of the 1940 Act. Under the 1940 Act, we may not acquire any non-qualifying asset unless, at the time the acquisition is made, qualifying assets represent at least 70% of our total assets. As of December 31, 2023, qualifying assets represent 86.6% of the Company's total assets and non-qualifying assets represent 13.4% of the Company's total assets.
[21] Non-voting.
[22] The investment is valued at the NAV of the underlying fund.
[23] The equity investment is income producing.
[24] The equity investment is income producing, based on rate disclosed.
[25] Loan or debt security is on non-accrual status and therefore is considered non-income producing.
[26] Loan or debt security is on non-accrual status and therefore is considered non-income producing.
[27] CLO Subordinated Investments are entitled to periodic distributions which are generally equal to the remaining cash flow of the payments made by the underlying fund’s investments less contractual payments to debt holders and fund expenses. The estimated annualized effective yield indicated is based upon a current projection of the amount and timing of these distributions. Such projections are updated on a quarterly basis and the estimated effective yield is adjusted prospectively.
[28] Non-U.S. company or principal place of business outside the U.S.
[29] CLO Subordinated Investments are entitled to periodic distributions which are generally equal to the remaining cash flow of the payments made by the underlying fund’s investments less contractual payments to debt holders and fund expenses. The estimated annualized effective yield indicated is based upon a current projection of the amount and timing of these distributions. Such projections are updated on a quarterly basis and the estimated effective yield is adjusted prospectively.
[30] Non-U.S. company or principal place of business outside the U.S.
[31] This investment is on non-accrual status and receives a 5% royalty interest on oil being produced on certain fields. All production payments received are being applied to the cost basis and are considered return of capital.
[32] As of December 31, 2023, this investment is pledged to secure the Company’s debt obligations.
[33] This investment is held by the Company's wholly-owned subsidiary Garrison Capital Equity Holdings XI LLC.
[34] This investment is held by the Company's wholly-owned subsidiary Garrison Capital Equity Holdings XI LLC.
[35] This investment is classified as Level II.
[36] This investment is classified as Level II.
[37] Information related to the Company’s derivatives is presented below as of December 31, 2023:

($ in thousands)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Description

 

Counterparty

 

Number of shares

 

 

Notional amount

 

 

Exercise price

 

 

Expiration date

 

Value

 

Call option

 

HDNet Holdco LLC

 

0.2

 

 

$

8

 

 

 

0.01

 

 

 N/A

 

$

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Description

 

Counterparty

 

Number of shares

 

 

Notional amount

 

 

Exercise price

 

 

Expiration date

 

Value

 

Put option

 

Advantage Capital Holdings LLC

 

 

164

 

 

$

563

 

 

 

20

 

 

 N/A

 

$

-

 

[38] Held through Garrison Capital Equity Holdings II LLC and net of non-controlling member’s interest of 17.5% pursuant to the Amended and Restated Limited Liability Company Agreement of Garrison Capital Equity Holdings II LLC.
[39] Held through Garrison Capital Equity Holdings II LLC and net of non-controlling member’s interest of 17.5% pursuant to the Amended and Restated Limited Liability Company Agreement of Garrison Capital Equity Holdings II LLC.
[40] Under the 1940 Act, the Company is deemed to be an “Affiliated Person” of, as defined in the 1940 Act, this portfolio company as the Company owns at least 5% of the portfolio company’s outstanding voting securities or is under common control with such portfolio company.
[41] Under the 1940 Act, the Company is deemed to be an “Affiliated Person” of, as defined in the 1940 Act, this portfolio company as the Company owns at least 5% of the portfolio company’s outstanding voting securities or is under common control with such portfolio company.
[42] Security has an unfunded commitment in addition to the amounts shown in the Consolidated Schedule of Investments. See Note 8 for additional information on the Company’s commitments and contingencies.
[43] The investment is valued at the NAV of the underlying fund.
[44] The investment is valued at the NAV of the underlying fund.