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Consolidated Schedule of Investments - Parenthetical
€ in Thousands, ¥ in Thousands, £ in Thousands, kr in Thousands, $ in Thousands
9 Months Ended 12 Months Ended
Jun. 30, 2025
Sep. 30, 2025
USD ($)
$ / shares
shares
Sep. 30, 2025
EUR (€)
shares
Sep. 30, 2025
GBP (£)
shares
Sep. 30, 2025
SEK (kr)
shares
Sep. 30, 2025
CAD ($)
shares
Sep. 30, 2025
JPY (¥)
shares
Sep. 30, 2024
USD ($)
$ / shares
shares
Sep. 30, 2024
EUR (€)
shares
Sep. 30, 2024
GBP (£)
shares
Sep. 30, 2023
USD ($)
Schedule of Investments [Line Items]                      
Percentage of total assets representing qualifying assets (as a percent)   74.10% 74.10% 74.10% 74.10% 74.10% 74.10% 74.40% 74.40% 74.40%  
Percentage of total assets representing non-qualifying assets (as a percent)   25.90% 25.90% 25.90% 25.90% 25.90% 25.90% 25.60% 25.60% 25.60%  
Investment owned, percent of net assets (as a percent)   194.28% 194.28% 194.28% 194.28% 194.28% 194.28% 203.07% 203.07% 203.07%  
Investment owned, at cost   $ 3,075,122,000           $ 3,144,919,000      
Investments at fair value   $ 2,847,782,000           $ 3,021,279,000      
Money market funds, percent of net assets (as a percent)   5.40% 5.40% 5.40% 5.40% 5.40% 5.40% 5.30% 5.30% 5.30%  
Cash and cash equivalents   $ 79,630,000           $ 78,543,000     $ 145,539,000
Restricted investments, fair value   $ 153,067                  
Restricted investments, percent of net assets (as a percent)   10.40% 10.40% 10.40% 10.40% 10.40% 10.40%        
Money Market Funds                      
Schedule of Investments [Line Items]                      
Cash and cash equivalents   $ 6,608,000           34,597,000      
Cash                      
Schedule of Investments [Line Items]                      
Cash and cash equivalents   73,022,000           43,946,000      
Investment, Identifier [Axis]: 107 Fair Street LLC, Real Estate Development, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [1],[2],[3],[4]               1,985,000      
Investments at fair value [1],[2],[3],[4]               $ 1,934,000      
Investment interest rate [1],[2],[3],[4],[5]               13.00% 13.00% 13.00%  
Principal [1],[2],[3],[4],[6]               $ 1,989,000      
Investment, Identifier [Axis]: 107-109 Beech OAK22 LLC, Real Estate Development, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   16,142,000 [7],[8],[9]           30,920,000 [1],[2],[3]      
Investments at fair value   $ 16,098,000 [7],[8],[9]           $ 31,015,000 [1],[2],[3]      
Investment interest rate   11.00% [7],[8],[9],[10] 11.00% [7],[8],[9],[10] 11.00% [7],[8],[9],[10] 11.00% [7],[8],[9],[10] 11.00% [7],[8],[9],[10] 11.00% [7],[8],[9],[10] 11.00% [1],[2],[3],[5] 11.00% [1],[2],[3],[5] 11.00% [1],[2],[3],[5]  
Principal   $ 16,173,000 [7],[8],[9],[11]           $ 31,231,000 [1],[2],[3],[6]      
Investment, Identifier [Axis]: 112-126 Van Houten Real22 LLC, Real Estate Development, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [1],[2],[3],[4]               5,332,000      
Investments at fair value [1],[2],[3],[4]               $ 5,288,000      
Investment interest rate [1],[2],[3],[4],[5]               13.00% 13.00% 13.00%  
Principal [1],[2],[3],[4],[6]               $ 5,336,000      
Investment, Identifier [Axis]: 1261229 BC LTD, Pharmaceuticals, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [9],[12],[13]   19,104,000                  
Investments at fair value [9],[12],[13]   $ 19,313,000                  
Investment, basis spread, variable rate (as a percent) [9],[12],[13]   6.25% 6.25% 6.25% 6.25% 6.25% 6.25%        
Investment interest rate [9],[10],[12],[13]   10.41% 10.41% 10.41% 10.41% 10.41% 10.41%        
Principal [9],[11],[12],[13]   $ 19,551,000                  
Investment, Identifier [Axis]: 1261229 BC LTD, Pharmaceuticals, Fixed Rate Bond                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [9],[12]   9,100,000                  
Investments at fair value [9],[12]   $ 9,335,000                  
Investment interest rate [9],[10],[12]   10.00% 10.00% 10.00% 10.00% 10.00% 10.00%        
Principal [9],[11],[12]   $ 9,100,000                  
Investment, Identifier [Axis]: A.T. Holdings II Ltd., Biotechnology, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   22,888,000 [7],[9],[12],[14]           21,024,000 [2],[3],[15],[16]      
Investments at fair value   $ 22,915,000 [7],[9],[12],[14]           $ 21,979,000 [2],[3],[15],[16]      
Investment, interest rate, paid in kind (as a percent) [7],[9],[12],[14]   8.28% 8.28% 8.28% 8.28% 8.28% 8.28%        
Investment interest rate   5.97% [7],[9],[10],[12],[14] 5.97% [7],[9],[10],[12],[14] 5.97% [7],[9],[10],[12],[14] 5.97% [7],[9],[10],[12],[14] 5.97% [7],[9],[10],[12],[14] 5.97% [7],[9],[10],[12],[14] 14.25% [2],[3],[5],[15],[16] 14.25% [2],[3],[5],[15],[16] 14.25% [2],[3],[5],[15],[16]  
Principal   $ 23,563,000 [7],[9],[11],[12],[14]           $ 21,870,000 [2],[3],[6],[15],[16]      
Investment, Identifier [Axis]: A.T. Holdings II SÀRL, Biotechnology, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   4,405,000 [7],[9],[12],[17]           7,028,000 [2],[3],[15],[18]      
Investments at fair value   $ 6,536,000 [7],[9],[12],[17]           $ 7,796,000 [2],[3],[15],[18]      
Investment, interest rate, paid in kind (as a percent)   22.50% [7],[9],[12],[17] 22.50% [7],[9],[12],[17] 22.50% [7],[9],[12],[17] 22.50% [7],[9],[12],[17] 22.50% [7],[9],[12],[17] 22.50% [7],[9],[12],[17] 22.50% [2],[3],[15],[18] 22.50% [2],[3],[15],[18] 22.50% [2],[3],[15],[18]  
Principal   $ 6,569,000 [7],[9],[11],[12],[17]           $ 7,835,000 [2],[3],[6],[15],[18]      
Investment, Identifier [Axis]: ACESO Holding 4 S.A.R.L., Health Care Services, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   4,847,000 [7],[9],[12],[13]           (47,000) [1],[2],[3],[15],[19]      
Investments at fair value   $ 4,849,000 [7],[9],[12],[13]           $ (47,000) [1],[2],[3],[15],[19]      
Investment, basis spread, variable rate (as a percent)   5.75% [7],[9],[12],[13] 5.75% [7],[9],[12],[13] 5.75% [7],[9],[12],[13] 5.75% [7],[9],[12],[13] 5.75% [7],[9],[12],[13] 5.75% [7],[9],[12],[13] 5.75% [1],[2],[3],[15],[19] 5.75% [1],[2],[3],[15],[19] 5.75% [1],[2],[3],[15],[19]  
Investment interest rate [7],[9],[10],[12],[13]   7.87% 7.87% 7.87% 7.87% 7.87% 7.87%        
Principal     € 4,204 [7],[9],[11],[12],[13]         $ 0 [1],[2],[3],[6],[15],[19]      
Investment, Identifier [Axis]: ACESO Holding 4 S.A.R.L., Health Care Services, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   $ 18,450,000 [7],[9],[12],[13]           18,424,000 [2],[3],[15],[19]      
Investments at fair value   $ 19,398,000 [7],[9],[12],[13]           $ 18,393,000 [2],[3],[15],[19]      
Investment, basis spread, variable rate (as a percent)   5.75% [7],[9],[12],[13] 5.75% [7],[9],[12],[13] 5.75% [7],[9],[12],[13] 5.75% [7],[9],[12],[13] 5.75% [7],[9],[12],[13] 5.75% [7],[9],[12],[13] 5.75% [2],[3],[15],[19] 5.75% [2],[3],[15],[19] 5.75% [2],[3],[15],[19]  
Investment interest rate   7.87% [7],[9],[10],[12],[13] 7.87% [7],[9],[10],[12],[13] 7.87% [7],[9],[10],[12],[13] 7.87% [7],[9],[10],[12],[13] 7.87% [7],[9],[10],[12],[13] 7.87% [7],[9],[10],[12],[13] 8.91% [2],[3],[5],[15],[19] 8.91% [2],[3],[5],[15],[19] 8.91% [2],[3],[5],[15],[19]  
Principal   $ 16,817,000 [7],[9],[11],[12],[13]             € 16,817 [2],[3],[6],[15],[19]    
Investment, Identifier [Axis]: ACESO Holding 4 S.A.R.L., Health Care Services, First Lien Term Loan 3                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[12],[13]   14,258,000                  
Investments at fair value [7],[9],[12],[13]   $ 14,309,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[12],[13]   5.75% 5.75% 5.75% 5.75% 5.75% 5.75%        
Investment interest rate [7],[9],[10],[12],[13]   7.87% 7.87% 7.87% 7.87% 7.87% 7.87%        
Principal [7],[9],[11],[12],[13]   $ 12,405,000                  
Investment, Identifier [Axis]: ADB Companies, LLC, Construction & Engineering, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   2,721,000 [7],[9],[13]           $ 3,062,000 [2],[3],[19]      
Investments at fair value   $ 2,642,000 [7],[9],[13]           $ 2,955,000 [2],[3],[19]      
Investment, interest rate, paid in kind (as a percent) [7],[9],[13]   1.00% 1.00% 1.00% 1.00% 1.00% 1.00%        
Investment, basis spread, variable rate (as a percent)   7.50% [7],[9],[13] 7.50% [7],[9],[13] 7.50% [7],[9],[13] 7.50% [7],[9],[13] 7.50% [7],[9],[13] 7.50% [7],[9],[13] 6.50% [2],[3],[19] 6.50% [2],[3],[19] 6.50% [2],[3],[19]  
Investment interest rate   10.76% [7],[9],[10],[13] 10.76% [7],[9],[10],[13] 10.76% [7],[9],[10],[13] 10.76% [7],[9],[10],[13] 10.76% [7],[9],[10],[13] 10.76% [7],[9],[10],[13] 11.37% [2],[3],[5],[19] 11.37% [2],[3],[5],[19] 11.37% [2],[3],[5],[19]  
Principal   $ 2,723,000 [7],[9],[11],[13]           $ 3,079,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: ADB Companies, LLC, Construction & Engineering, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   783,000 [7],[9],[13]           868,000 [2],[3],[19]      
Investments at fair value   $ 761,000 [7],[9],[13]           $ 840,000 [2],[3],[19]      
Investment, interest rate, paid in kind (as a percent) [7],[9],[13]   1.00% 1.00% 1.00% 1.00% 1.00% 1.00%        
Investment, basis spread, variable rate (as a percent)   7.50% [7],[9],[13] 7.50% [7],[9],[13] 7.50% [7],[9],[13] 7.50% [7],[9],[13] 7.50% [7],[9],[13] 7.50% [7],[9],[13] 6.50% [2],[3],[19] 6.50% [2],[3],[19] 6.50% [2],[3],[19]  
Investment interest rate   10.76% [7],[9],[10],[13] 10.76% [7],[9],[10],[13] 10.76% [7],[9],[10],[13] 10.76% [7],[9],[10],[13] 10.76% [7],[9],[10],[13] 10.76% [7],[9],[10],[13] 12.01% [2],[3],[5],[19] 12.01% [2],[3],[5],[19] 12.01% [2],[3],[5],[19]  
Principal   $ 784,000 [7],[9],[11],[13]           $ 875,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: ADB Companies, LLC, Construction & Engineering, First Lien Term Loan 3                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   14,260,000 [7],[9],[13]           15,975,000 [2],[3],[19]      
Investments at fair value   $ 13,845,000 [7],[9],[13]           $ 15,410,000 [2],[3],[19]      
Investment, interest rate, paid in kind (as a percent) [7],[9],[13]   1.00% 1.00% 1.00% 1.00% 1.00% 1.00%        
Investment, basis spread, variable rate (as a percent)   7.50% [7],[9],[13] 7.50% [7],[9],[13] 7.50% [7],[9],[13] 7.50% [7],[9],[13] 7.50% [7],[9],[13] 7.50% [7],[9],[13] 6.50% [2],[3],[19] 6.50% [2],[3],[19] 6.50% [2],[3],[19]  
Investment interest rate   10.76% [7],[9],[10],[13] 10.76% [7],[9],[10],[13] 10.76% [7],[9],[10],[13] 10.76% [7],[9],[10],[13] 10.76% [7],[9],[10],[13] 10.76% [7],[9],[10],[13] 11.37% [2],[3],[5],[19] 11.37% [2],[3],[5],[19] 11.37% [2],[3],[5],[19]  
Principal   $ 14,272,000 [7],[9],[11],[13]           $ 16,053,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: ADC Therapeutics SA, Biotechnology, Common Stock                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   0 [9],[12],[20]           0 [2],[15]      
Investments at fair value   $ 0 [9],[12],[20]           $ 0 [2],[15]      
Investment owned, balance (in shares) | shares   1,365,722 [9],[12],[20] 1,365,722 [9],[12],[20] 1,365,722 [9],[12],[20] 1,365,722 [9],[12],[20] 1,365,722 [9],[12],[20] 1,365,722 [9],[12],[20] 1,674,030 [2],[15] 1,674,030 [2],[15] 1,674,030 [2],[15]  
Investment, Identifier [Axis]: ADC Therapeutics SA, Biotechnology, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   $ 6,402,000 [7],[9],[12],[13]           $ 6,353,000 [2],[3],[15],[19]      
Investments at fair value   $ 6,491,000 [7],[9],[12],[13]           $ 6,424,000 [2],[3],[15],[19]      
Investment, basis spread, variable rate (as a percent)   7.50% [7],[9],[12],[13] 7.50% [7],[9],[12],[13] 7.50% [7],[9],[12],[13] 7.50% [7],[9],[12],[13] 7.50% [7],[9],[12],[13] 7.50% [7],[9],[12],[13] 7.50% [2],[3],[15],[19] 7.50% [2],[3],[15],[19] 7.50% [2],[3],[15],[19]  
Investment interest rate   11.65% [7],[9],[10],[12],[13] 11.65% [7],[9],[10],[12],[13] 11.65% [7],[9],[10],[12],[13] 11.65% [7],[9],[10],[12],[13] 11.65% [7],[9],[10],[12],[13] 11.65% [7],[9],[10],[12],[13] 12.25% [2],[3],[5],[15],[19] 12.25% [2],[3],[5],[15],[19] 12.25% [2],[3],[5],[15],[19]  
Principal   $ 6,589,000 [7],[9],[11],[12],[13]           $ 6,589,000 [2],[3],[6],[15],[19]      
Investment, Identifier [Axis]: ADC Therapeutics SA, Biotechnology, Warrants                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   174,000 [7],[9],[12],[20]           174,000 [2],[3],[15]      
Investments at fair value   $ 34,000 [7],[9],[12],[20]           $ 33,000 [2],[3],[15]      
Investment owned, balance (in shares) | shares   28,948 [7],[9],[12],[20] 28,948 [7],[9],[12],[20] 28,948 [7],[9],[12],[20] 28,948 [7],[9],[12],[20] 28,948 [7],[9],[12],[20] 28,948 [7],[9],[12],[20] 28,948 [2],[3],[15] 28,948 [2],[3],[15] 28,948 [2],[3],[15]  
Investment, Identifier [Axis]: AIP RD Buyer Corp., Distributors, Common Stock                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   $ 1,733,000 [7],[9],[20]           $ 1,733,000 [2],[3]      
Investments at fair value   $ 3,134,000 [7],[9],[20]           $ 2,220,000 [2],[3]      
Investment owned, balance (in shares) | shares   17,870 [7],[9],[20] 17,870 [7],[9],[20] 17,870 [7],[9],[20] 17,870 [7],[9],[20] 17,870 [7],[9],[20] 17,870 [7],[9],[20] 17,870 [2],[3] 17,870 [2],[3] 17,870 [2],[3]  
Investment, Identifier [Axis]: ASP Integrity Acquisition Co LLC, Diversified Support Services, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[8],[9],[13]   $ 277,000                  
Investments at fair value [7],[8],[9],[13]   $ 226,000                  
Investment, basis spread, variable rate (as a percent) [7],[8],[9],[13]   4.00% 4.00% 4.00% 4.00% 4.00% 4.00%        
Investment interest rate [7],[8],[9],[10],[13]   11.25% 11.25% 11.25% 11.25% 11.25% 11.25%        
Principal [7],[8],[9],[11],[13]   $ 315,000                  
Investment, Identifier [Axis]: ASP Integrity Acquisition Co LLC, Diversified Support Services, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[13]   14,841,000                  
Investments at fair value [7],[9],[13]   $ 14,576,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[13]   5.00% 5.00% 5.00% 5.00% 5.00% 5.00%        
Investment interest rate [7],[9],[10],[13]   9.13% 9.13% 9.13% 9.13% 9.13% 9.13%        
Principal [7],[9],[11],[13]   $ 15,048,000                  
Investment, Identifier [Axis]: ASP Integrity Acquisition Co LLC, Diversified Support Services, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[8],[9],[13]   (17,000)                  
Investments at fair value [7],[8],[9],[13]   $ (79,000)                  
Investment, basis spread, variable rate (as a percent) [7],[8],[9],[13]   5.00% 5.00% 5.00% 5.00% 5.00% 5.00%        
Principal [7],[8],[9],[11],[13]   $ 0                  
Investment, Identifier [Axis]: ASP-R-PAC Acquisition Co LLC, Paper & Plastic Packaging Products & Materials, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   799,000 [7],[8],[9],[12],[13]           $ 220,000 [1],[2],[3],[15],[19]      
Investments at fair value   $ 801,000 [7],[8],[9],[12],[13]           $ 211,000 [1],[2],[3],[15],[19]      
Investment, basis spread, variable rate (as a percent)   6.00% [7],[8],[9],[12],[13] 6.00% [7],[8],[9],[12],[13] 6.00% [7],[8],[9],[12],[13] 6.00% [7],[8],[9],[12],[13] 6.00% [7],[8],[9],[12],[13] 6.00% [7],[8],[9],[12],[13] 6.00% [1],[2],[3],[15],[19] 6.00% [1],[2],[3],[15],[19] 6.00% [1],[2],[3],[15],[19]  
Investment interest rate   10.28% [7],[8],[9],[10],[12],[13] 10.28% [7],[8],[9],[10],[12],[13] 10.28% [7],[8],[9],[10],[12],[13] 10.28% [7],[8],[9],[10],[12],[13] 10.28% [7],[8],[9],[10],[12],[13] 10.28% [7],[8],[9],[10],[12],[13] 11.29% [1],[2],[3],[5],[15],[19] 11.29% [1],[2],[3],[5],[15],[19] 11.29% [1],[2],[3],[5],[15],[19]  
Principal   $ 816,000 [7],[8],[9],[11],[12],[13]           $ 230,000 [1],[2],[3],[6],[15],[19]      
Investment, Identifier [Axis]: ASP-R-PAC Acquisition Co LLC, Paper & Plastic Packaging Products & Materials, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[15],[19]               3,234,000      
Investments at fair value [2],[3],[15],[19]               $ 3,087,000      
Investment, basis spread, variable rate (as a percent) [2],[3],[15],[19]               6.00% 6.00% 6.00%  
Investment interest rate [2],[3],[5],[15],[19]               10.66% 10.66% 10.66%  
Principal [2],[3],[6],[15],[19]               $ 3,243,000      
Investment, Identifier [Axis]: ASP-R-PAC Acquisition Co LLC, Paper & Plastic Packaging Products & Materials, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[12],[13]   8,852,000                  
Investments at fair value [7],[9],[12],[13]   $ 8,816,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[12],[13]   6.00% 6.00% 6.00% 6.00% 6.00% 6.00%        
Investment interest rate [7],[9],[10],[12],[13]   10.57% 10.57% 10.57% 10.57% 10.57% 10.57%        
Principal [7],[9],[11],[12],[13]   $ 8,942,000                  
Investment, Identifier [Axis]: ASP-R-PAC Acquisition Co LLC, Paper & Plastic Packaging Products & Materials, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[12],[13]   661,000                  
Investments at fair value [7],[9],[12],[13]   $ 656,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[12],[13]   6.00% 6.00% 6.00% 6.00% 6.00% 6.00%        
Investment interest rate [7],[9],[10],[12],[13]   10.31% 10.31% 10.31% 10.31% 10.31% 10.31%        
Principal [7],[9],[11],[12],[13]   $ 666,000                  
Investment, Identifier [Axis]: ATNX SPV, LLC, Pharmaceuticals, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   13,986,000 [7],[9],[12],[14]           13,013,000 [2],[3],[15],[16]      
Investments at fair value   13,818,000 [7],[9],[12],[14]           $ 12,892,000 [2],[3],[15],[16]      
Investment, interest rate, paid in kind (as a percent) [2],[3],[15],[16]               15.89% 15.89% 15.89%  
Principal   13,958,000 [7],[9],[11],[12],[14]           $ 12,989,000 [2],[3],[6],[15],[16]      
Investment, Identifier [Axis]: AVSC Holding Corp., Specialized Consumer Services, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[8],[9],[13]   (101,000)                  
Investments at fair value [7],[8],[9],[13]   $ (105,000)                  
Investment, basis spread, variable rate (as a percent) [7],[8],[9],[13]   5.00% 5.00% 5.00% 5.00% 5.00% 5.00%        
Principal [7],[8],[9],[11],[13]   $ 0                  
Investment, Identifier [Axis]: AVSC Holding Corp., Specialized Consumer Services, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[13]   54,940,000                  
Investments at fair value [7],[9],[13]   $ 54,892,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[13]   5.00% 5.00% 5.00% 5.00% 5.00% 5.00%        
Investment interest rate [7],[9],[10],[13]   9.16% 9.16% 9.16% 9.16% 9.16% 9.16%        
Principal [7],[9],[11],[13]   $ 55,927,000                  
Investment, Identifier [Axis]: Access CIG, LLC, Diversified Support Services, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[19]               1,975,000      
Investments at fair value [2],[19]               $ 1,996,000      
Investment, basis spread, variable rate (as a percent) [2],[19]               5.00% 5.00% 5.00%  
Investment interest rate [2],[5],[19]               10.25% 10.25% 10.25%  
Principal [2],[6],[19]               $ 1,985,000      
Investment, Identifier [Axis]: Accession Risk Management Group, Inc., Insurance Brokers, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [1],[2],[3],[19]               (5,000)      
Investments at fair value [1],[2],[3],[19]               $ (5,000)      
Investment, basis spread, variable rate (as a percent) [1],[2],[3],[19]               4.75% 4.75% 4.75%  
Principal [1],[2],[3],[6],[19]               $ 0      
Investment, Identifier [Axis]: Accession Risk Management Group, Inc., Insurance Brokers, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [1],[2],[3],[19]               (48,000)      
Investments at fair value [1],[2],[3],[19]               $ (45,000)      
Investment, basis spread, variable rate (as a percent) [1],[2],[3],[19]               4.75% 4.75% 4.75%  
Principal [1],[2],[3],[6],[19]               $ 0      
Investment, Identifier [Axis]: Accupac, Inc., Personal Care Products, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [1],[2],[3],[19]               2,471,000      
Investments at fair value [1],[2],[3],[19]               $ 2,443,000      
Investment, basis spread, variable rate (as a percent) [1],[2],[3],[19]               6.00% 6.00% 6.00%  
Investment interest rate [1],[2],[3],[5],[19]               10.90% 10.90% 10.90%  
Principal [1],[2],[3],[6],[19]               $ 2,482,000      
Investment, Identifier [Axis]: Accupac, Inc., Personal Care Products, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [1],[2],[3],[19]               (2,000)      
Investments at fair value [1],[2],[3],[19]               $ (59,000)      
Investment, basis spread, variable rate (as a percent) [1],[2],[3],[19]               6.00% 6.00% 6.00%  
Principal [1],[2],[3],[6],[19]               $ 0      
Investment, Identifier [Axis]: Accupac, Inc., Personal Care Products, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[19]               19,978,000      
Investments at fair value [2],[3],[19]               $ 19,724,000      
Investment, basis spread, variable rate (as a percent) [2],[3],[19]               6.00% 6.00% 6.00%  
Investment interest rate [2],[3],[5],[19]               10.90% 10.90% 10.90%  
Principal [2],[3],[6],[19]               $ 20,024,000      
Investment, Identifier [Axis]: Acquia Inc., Application Software, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   2,704,000 [7],[9],[13]           1,078,000 [1],[2],[3],[19]      
Investments at fair value   $ 2,709,000 [7],[9],[13]           $ 1,084,000 [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 7.00% [1],[2],[3],[19] 7.00% [1],[2],[3],[19] 7.00% [1],[2],[3],[19]  
Investment interest rate   10.45% [7],[9],[10],[13] 10.45% [7],[9],[10],[13] 10.45% [7],[9],[10],[13] 10.45% [7],[9],[10],[13] 10.45% [7],[9],[10],[13] 10.45% [7],[9],[10],[13] 12.47% [1],[2],[3],[5],[19] 12.47% [1],[2],[3],[5],[19] 12.47% [1],[2],[3],[5],[19]  
Principal   $ 2,709,000 [7],[9],[11],[13]           $ 1,084,000 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: Acquia Inc., Application Software, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   6,397,000 [7],[9],[13]           6,366,000 [2],[3],[19]      
Investments at fair value   $ 6,400,000 [7],[9],[13]           $ 6,400,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 7.00% [2],[3],[19] 7.00% [2],[3],[19] 7.00% [2],[3],[19]  
Investment interest rate   10.43% [7],[9],[10],[13] 10.43% [7],[9],[10],[13] 10.43% [7],[9],[10],[13] 10.43% [7],[9],[10],[13] 10.43% [7],[9],[10],[13] 10.43% [7],[9],[10],[13] 12.46% [2],[3],[5],[19] 12.46% [2],[3],[5],[19] 12.46% [2],[3],[5],[19]  
Principal   $ 6,400,000 [7],[9],[11],[13]           $ 6,400,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Acquia Inc., Application Software, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   25,306,000 [7],[9],[13]           25,309,000 [2],[3],[19]      
Investments at fair value   $ 25,332,000 [7],[9],[13]           $ 25,332,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 7.00% [2],[3],[19] 7.00% [2],[3],[19] 7.00% [2],[3],[19]  
Investment interest rate   10.43% [7],[9],[10],[13] 10.43% [7],[9],[10],[13] 10.43% [7],[9],[10],[13] 10.43% [7],[9],[10],[13] 10.43% [7],[9],[10],[13] 10.43% [7],[9],[10],[13] 12.46% [2],[3],[5],[19] 12.46% [2],[3],[5],[19] 12.46% [2],[3],[5],[19]  
Principal   $ 25,332,000 [7],[9],[11],[13]           $ 25,332,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: AirStrip Technologies, Inc., Application Software, Warrants                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3]               90,000      
Investments at fair value [2],[3]               $ 0      
Investment owned, balance (in shares) | shares [2],[3]               5,715 5,715 5,715  
Investment, Identifier [Axis]: All Web Leads, Inc., Advertising, Common Stock                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   0.10% 0.10% 0.10% 0.10% 0.10% 0.10% 0.10% 0.10% 0.10%  
Investment owned, at cost   $ 1,622,000 [7],[20],[21]           $ 1,622,000 [3],[22]      
Investments at fair value   1,622,000 [7],[20],[21]           1,622,000 [3],[22]     0
Principal   $ 0           $ 0      
Investment owned, balance (in shares) | shares   11,499 [7],[20],[21] 11,499 [7],[20],[21] 11,499 [7],[20],[21] 11,499 [7],[20],[21] 11,499 [7],[20],[21] 11,499 [7],[20],[21] 11,499 [3],[22] 11,499 [3],[22] 11,499 [3],[22]  
Investment, Identifier [Axis]: All Web Leads, Inc., Advertising, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   0.10% 0.10% 0.10% 0.10% 0.10% 0.10% 0.10% 0.10% 0.10%  
Investment owned, at cost   $ 1,427,000 [7],[8],[13],[21]           $ 1,520,000 [1],[3],[19],[22]      
Investments at fair value   $ 1,386,000 [7],[8],[13],[21]           $ 1,506,000 [1],[3],[19],[22]     0
Investment, basis spread, variable rate (as a percent)   4.00% [7],[8],[13],[21] 4.00% [7],[8],[13],[21] 4.00% [7],[8],[13],[21] 4.00% [7],[8],[13],[21] 4.00% [7],[8],[13],[21] 4.00% [7],[8],[13],[21] 4.00% [1],[3],[19],[22] 4.00% [1],[3],[19],[22] 4.00% [1],[3],[19],[22]  
Investment interest rate   8.10% [7],[8],[10],[13],[21] 8.10% [7],[8],[10],[13],[21] 8.10% [7],[8],[10],[13],[21] 8.10% [7],[8],[10],[13],[21] 8.10% [7],[8],[10],[13],[21] 8.10% [7],[8],[10],[13],[21] 8.70% [1],[3],[5],[19],[22] 8.70% [1],[3],[5],[19],[22] 8.70% [1],[3],[5],[19],[22]  
Principal   $ 1,440,000 [7],[8],[11],[13],[21]           $ 1,560,000 [1],[3],[6],[19],[22]      
Investment, Identifier [Axis]: All Web Leads, Inc., Advertising, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   0.10% 0.10% 0.10% 0.10% 0.10% 0.10% 0.10% 0.10% 0.10%  
Investment owned, at cost   $ 1,695,000 [7],[13],[21]           $ 1,757,000 [3],[19],[22]      
Investments at fair value   $ 1,650,000 [7],[13],[21]           $ 1,741,000 [3],[19],[22]     0
Investment, interest rate, paid in kind (as a percent)   2.00% [7],[13],[21] 2.00% [7],[13],[21] 2.00% [7],[13],[21] 2.00% [7],[13],[21] 2.00% [7],[13],[21] 2.00% [7],[13],[21] 2.00% [3],[19],[22] 2.00% [3],[19],[22] 2.00% [3],[19],[22]  
Investment, basis spread, variable rate (as a percent)   4.00% [7],[13],[21] 4.00% [7],[13],[21] 4.00% [7],[13],[21] 4.00% [7],[13],[21] 4.00% [7],[13],[21] 4.00% [7],[13],[21] 4.00% [3],[19],[22] 4.00% [3],[19],[22] 4.00% [3],[19],[22]  
Investment interest rate   6.10% [7],[10],[13],[21] 6.10% [7],[10],[13],[21] 6.10% [7],[10],[13],[21] 6.10% [7],[10],[13],[21] 6.10% [7],[10],[13],[21] 6.10% [7],[10],[13],[21] 6.70% [3],[5],[19],[22] 6.70% [3],[5],[19],[22] 6.70% [3],[5],[19],[22]  
Principal   $ 1,724,000 [7],[11],[13],[21]           $ 1,819,000 [3],[6],[19],[22]      
Investment, Identifier [Axis]: All Web Leads, Inc., Advertising, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   0.20% 0.20% 0.20% 0.20% 0.20% 0.20% 0.20% 0.20% 0.20%  
Investment owned, at cost   $ 3,626,000 [7],[13],[21]           $ 3,493,000 [3],[19],[22]      
Investments at fair value   $ 3,533,000 [7],[13],[21]           $ 3,463,000 [3],[19],[22]     0
Investment, interest rate, paid in kind (as a percent)   2.00% [7],[13],[21] 2.00% [7],[13],[21] 2.00% [7],[13],[21] 2.00% [7],[13],[21] 2.00% [7],[13],[21] 2.00% [7],[13],[21] 2.00% [3],[19],[22] 2.00% [3],[19],[22] 2.00% [3],[19],[22]  
Investment, basis spread, variable rate (as a percent)   5.00% [7],[13],[21] 5.00% [7],[13],[21] 5.00% [7],[13],[21] 5.00% [7],[13],[21] 5.00% [7],[13],[21] 5.00% [7],[13],[21] 5.00% [3],[19],[22] 5.00% [3],[19],[22] 5.00% [3],[19],[22]  
Investment interest rate   7.10% [7],[10],[13],[21] 7.10% [7],[10],[13],[21] 7.10% [7],[10],[13],[21] 7.10% [7],[10],[13],[21] 7.10% [7],[10],[13],[21] 7.10% [7],[10],[13],[21] 7.70% [3],[5],[19],[22] 7.70% [3],[5],[19],[22] 7.70% [3],[5],[19],[22]  
Principal   $ 3,711,000 [7],[11],[13],[21]           $ 3,637,000 [3],[6],[19],[22]      
Investment, Identifier [Axis]: All Web Leads, Inc., Advertising, First Lien Term Loan 3                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   0.20% 0.20% 0.20% 0.20% 0.20% 0.20% 0.20% 0.20% 0.20%  
Investment owned, at cost   $ 3,027,000 [7],[17],[21]           $ 3,026,000 [3],[18],[22]      
Investments at fair value   $ 3,347,000 [7],[17],[21]           $ 3,183,000 [3],[18],[22]     0
Investment, interest rate, paid in kind (as a percent)   10.00% [7],[17],[21] 10.00% [7],[17],[21] 10.00% [7],[17],[21] 10.00% [7],[17],[21] 10.00% [7],[17],[21] 10.00% [7],[17],[21] 10.00% [3],[18],[22] 10.00% [3],[18],[22] 10.00% [3],[18],[22]  
Principal   $ 3,914,000 [7],[11],[17],[21]           $ 3,541,000 [3],[6],[18],[22]      
Investment, Identifier [Axis]: Alto Pharmacy Holdings, Inc., Health Care Technology, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[19]               9,666,000      
Investments at fair value [2],[3],[19]               $ 9,120,000      
Investment, interest rate, paid in kind (as a percent) [2],[3],[19]               8.93% 8.93% 8.93%  
Investment, basis spread, variable rate (as a percent) [2],[3],[19]               11.50% 11.50% 11.50%  
Investment interest rate [2],[3],[5],[19]               8.00% 8.00% 8.00%  
Principal [2],[3],[6],[19]               $ 10,134,000      
Investment, Identifier [Axis]: Alto Pharmacy Holdings, Inc., Health Care Technology, Warrants                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3]               642,000      
Investments at fair value [2],[3]               $ 802,000      
Investment owned, balance (in shares) | shares [2],[3]               598,283 598,283 598,283  
Investment, Identifier [Axis]: Alvogen Pharma US, Inc., Pharmaceuticals, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[19]               $ 16,115,000      
Investments at fair value [2],[3],[19]               $ 14,852,000      
Investment, basis spread, variable rate (as a percent) [2],[3],[19]               7.50% 7.50% 7.50%  
Investment interest rate [2],[3],[5],[19]               12.45% 12.45% 12.45%  
Principal [2],[3],[6],[19]               $ 16,143,000      
Investment, Identifier [Axis]: Alvogen Pharma US, Inc., Pharmaceuticals, Second Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[13]   2,735,000                  
Investments at fair value [7],[9],[13]   $ 2,737,000                  
Investment, interest rate, paid in kind (as a percent) [7],[9],[13]   8.00% 8.00% 8.00% 8.00% 8.00% 8.00%        
Investment, basis spread, variable rate (as a percent) [7],[9],[13]   10.50% 10.50% 10.50% 10.50% 10.50% 10.50%        
Investment interest rate [7],[9],[10],[13]   6.50% 6.50% 6.50% 6.50% 6.50% 6.50%        
Principal [7],[9],[11],[13]   $ 2,737,000                  
Investment, Identifier [Axis]: Alvotech Holdings S.A., Biotechnology, Common Stock 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   76,000 [9],[12],[20]           206,000 [2],[15]      
Investments at fair value   $ 623,000 [9],[12],[20]           $ 1,413,000 [2],[15]      
Investment owned, balance (in shares) | shares   76,023 [9],[12],[20] 76,023 [9],[12],[20] 76,023 [9],[12],[20] 76,023 [9],[12],[20] 76,023 [9],[12],[20] 76,023 [9],[12],[20] 118,744 [2],[15] 118,744 [2],[15] 118,744 [2],[15]  
Investment, Identifier [Axis]: Alvotech Holdings S.A., Biotechnology, Common Stock 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   $ 283,000 [7],[9],[12],[20],[23]           $ 283,000 [2],[3],[15],[24]      
Investments at fair value   $ 67,000 [7],[9],[12],[20],[23]           $ 315,000 [2],[3],[15],[24]      
Investment owned, balance (in shares) | shares   70,820 [7],[9],[12],[20],[23] 70,820 [7],[9],[12],[20],[23] 70,820 [7],[9],[12],[20],[23] 70,820 [7],[9],[12],[20],[23] 70,820 [7],[9],[12],[20],[23] 70,820 [7],[9],[12],[20],[23] 70,820 [2],[3],[15],[24] 70,820 [2],[3],[15],[24] 70,820 [2],[3],[15],[24]  
Investment, Identifier [Axis]: American Auto Auction Group, LLC, Diversified Support Services, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[19]               $ 2,469,000      
Investments at fair value [2],[19]               $ 2,501,000      
Investment, basis spread, variable rate (as a percent) [2],[19]               5.00% 5.00% 5.00%  
Investment interest rate [2],[5],[19]               9.75% 9.75% 9.75%  
Principal [2],[6],[19]               $ 2,487,000      
Investment, Identifier [Axis]: American Auto Auction Group, LLC, Diversified Support Services, Second Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[19]               16,556,000      
Investments at fair value [2],[3],[19]               $ 16,494,000      
Investment, basis spread, variable rate (as a percent) [2],[3],[19]               8.75% 8.75% 8.75%  
Investment interest rate [2],[3],[5],[19]               13.50% 13.50% 13.50%  
Principal [2],[3],[6],[19]               $ 17,048,000      
Investment, Identifier [Axis]: Amspec Parent LLC, Diversified Support Services, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [1],[2],[3],[19]               (98,000)      
Investments at fair value [1],[2],[3],[19]               $ 0      
Investment, basis spread, variable rate (as a percent) [1],[2],[3],[19]               5.50% 5.50% 5.50%  
Principal [1],[2],[3],[6],[19]               $ 0      
Investment, Identifier [Axis]: Amspec Parent LLC, Diversified Support Services, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[19]               32,654,000      
Investments at fair value [2],[3],[19]               $ 33,390,000      
Investment, basis spread, variable rate (as a percent) [2],[3],[19]               5.50% 5.50% 5.50%  
Investment interest rate [2],[3],[5],[19]               10.10% 10.10% 10.10%  
Principal [2],[3],[6],[19]               $ 33,390,000      
Investment, Identifier [Axis]: Amspec Parent LLC, Diversified Support Services, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [1],[2],[3],[19]               (60,000)      
Investments at fair value [1],[2],[3],[19]               $ 0      
Investment, basis spread, variable rate (as a percent) [1],[2],[3],[19]               5.50% 5.50% 5.50%  
Principal [1],[2],[3],[6],[19]               $ 0      
Investment, Identifier [Axis]: Anchorage Capital CLO 20, LTD., Multi-Sector Holdings, CLO Notes                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[15],[19]               715,000      
Investments at fair value [2],[15],[19]               $ 736,000      
Investment, basis spread, variable rate (as a percent) [2],[15],[19]               7.61% 7.61% 7.61%  
Investment interest rate [2],[5],[15],[19]               12.89% 12.89% 12.89%  
Principal [2],[6],[15],[19]               $ 750,000      
Investment, Identifier [Axis]: Arches Buyer Inc., Interactive Media & Services, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   $ 46,702,000 [7],[9],[13]           46,877,000 [2],[3],[19]      
Investments at fair value   $ 47,093,000 [7],[9],[13]           $ 47,428,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.50% [7],[9],[13] 5.50% [7],[9],[13] 5.50% [7],[9],[13] 5.50% [7],[9],[13] 5.50% [7],[9],[13] 5.50% [7],[9],[13] 5.50% [2],[3],[19] 5.50% [2],[3],[19] 5.50% [2],[3],[19]  
Investment interest rate   9.66% [7],[9],[10],[13] 9.66% [7],[9],[10],[13] 9.66% [7],[9],[10],[13] 9.66% [7],[9],[10],[13] 9.66% [7],[9],[10],[13] 9.66% [7],[9],[10],[13] 10.35% [2],[3],[5],[19] 10.35% [2],[3],[5],[19] 10.35% [2],[3],[5],[19]  
Principal   $ 47,093,000 [7],[9],[11],[13]           $ 47,451,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Ares XLIV CLO, Multi-Sector Holdings, CLO Notes                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[15],[19]               3,399,000      
Investments at fair value [2],[15],[19]               $ 3,509,000      
Investment, basis spread, variable rate (as a percent) [2],[15],[19]               7.13% 7.13% 7.13%  
Investment interest rate [2],[5],[15],[19]               12.43% 12.43% 12.43%  
Principal [2],[6],[15],[19]               $ 3,500,000      
Investment, Identifier [Axis]: Assembled Brands Capital LLC, Specialized Finance, Common Stock                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   0.10% 0.10% 0.10% 0.10% 0.10% 0.10% 0.10% 0.10% 0.10%  
Investment owned, at cost   $ 1,963,000 [7],[20],[21]           $ 1,963,000 [3],[22]      
Investments at fair value   $ 1,496,000 [7],[20],[21]           $ 1,246,000 [3],[22]     89,000
Investment owned, balance (in shares) | shares   12,463,242 [7],[20],[21] 12,463,242 [7],[20],[21] 12,463,242 [7],[20],[21] 12,463,242 [7],[20],[21] 12,463,242 [7],[20],[21] 12,463,242 [7],[20],[21] 12,463,242 [3],[22] 12,463,242 [3],[22] 12,463,242 [3],[22]  
Investment, Identifier [Axis]: Assembled Brands Capital LLC, Specialized Finance, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)               0.00% 0.00% 0.00%  
Investments at fair value               $ 0     21,823,000
Investment, Identifier [Axis]: Assembled Brands Capital LLC, Specialized Finance, Preferred Equity                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)               0.00% 0.00% 0.00%  
Investments at fair value               $ 0     1,005,000
Investment, Identifier [Axis]: Assembled Brands Capital LLC, Specialized Finance, Warrants                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00%  
Investment owned, at cost   $ 0 [7],[20],[21]           $ 0 [3],[22]      
Investments at fair value   $ 0 [7],[20],[21]           $ 0 [3],[22]     0
Investment owned, balance (in shares) | shares   78,045 [7],[20],[21] 78,045 [7],[20],[21] 78,045 [7],[20],[21] 78,045 [7],[20],[21] 78,045 [7],[20],[21] 78,045 [7],[20],[21] 78,045 [3],[22] 78,045 [3],[22] 78,045 [3],[22]  
Investment, Identifier [Axis]: Astra Acquisition Corp., Application Software, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   $ 8,368,000 [7],[9],[13],[17]           $ 7,816,000 [2],[19]      
Investments at fair value   $ 3,535,000 [7],[9],[13],[17]           $ 6,555,000 [2],[19]      
Investment, basis spread, variable rate (as a percent)   6.75% [7],[9],[13],[17] 6.75% [7],[9],[13],[17] 6.75% [7],[9],[13],[17] 6.75% [7],[9],[13],[17] 6.75% [7],[9],[13],[17] 6.75% [7],[9],[13],[17] 6.75% [2],[19] 6.75% [2],[19] 6.75% [2],[19]  
Investment interest rate [2],[5],[19]               11.35% 11.35% 11.35%  
Principal   $ 8,836,000 [7],[9],[11],[13],[17]           $ 7,907,000 [2],[6],[19]      
Investment, Identifier [Axis]: Astra Acquisition Corp., Application Software, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   9,901,000 [7],[9],[13],[17]           10,187,000 [2],[3],[18],[19]      
Investments at fair value   $ 0 [7],[9],[13],[17]           $ 3,605,000 [2],[3],[18],[19]      
Investment, basis spread, variable rate (as a percent)   5.25% [7],[9],[13],[17] 5.25% [7],[9],[13],[17] 5.25% [7],[9],[13],[17] 5.25% [7],[9],[13],[17] 5.25% [7],[9],[13],[17] 5.25% [7],[9],[13],[17] 5.25% [2],[3],[18],[19] 5.25% [2],[3],[18],[19] 5.25% [2],[3],[18],[19]  
Principal   $ 12,537,000 [7],[9],[11],[13],[17]           $ 12,537,000 [2],[3],[6],[18],[19]      
Investment, Identifier [Axis]: Asurion, LLC, Property & Casualty Insurance, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [9],[13]   19,805,000                  
Investments at fair value [9],[13]   $ 19,933,000                  
Investment, basis spread, variable rate (as a percent) [9],[13]   4.25% 4.25% 4.25% 4.25% 4.25% 4.25%        
Investment interest rate [9],[10],[13]   8.51% 8.51% 8.51% 8.51% 8.51% 8.51%        
Principal [9],[11],[13]   $ 19,847,000                  
Investment, Identifier [Axis]: Aurelia Netherlands B.V., Interactive Media & Services, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[12],[13]   53,229,000                  
Investments at fair value [7],[9],[12],[13]   $ 55,886,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[12],[13]   4.75% 4.75% 4.75% 4.75% 4.75% 4.75%        
Investment interest rate [7],[9],[10],[12],[13]   6.78% 6.78% 6.78% 6.78% 6.78% 6.78%        
Principal | € [7],[9],[11],[12],[13]     € 47,682                
Investment, Identifier [Axis]: Aurelia Netherlands Midco 2 B.V., Interactive Media & Services, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[15],[19]               29,727,000      
Investments at fair value [2],[3],[15],[19]               $ 30,698,000      
Investment, basis spread, variable rate (as a percent) [2],[3],[15],[19]               5.75% 5.75% 5.75%  
Investment interest rate [2],[3],[5],[15],[19]               9.55% 9.55% 9.55%  
Principal | € [2],[3],[6],[15],[19]                 € 28,022    
Investment, Identifier [Axis]: Aurora Lux Finco S.À.R.L., Airport Services, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   $ 31,217,000 [7],[9],[12],[13]           $ 30,169,000 [2],[3],[15],[19]      
Investments at fair value   $ 31,348,000 [7],[9],[12],[13]           $ 29,802,000 [2],[3],[15],[19]      
Investment, interest rate, paid in kind (as a percent)   [7],[9],[12],[13] [7],[9],[12],[13] [7],[9],[12],[13] [7],[9],[12],[13] [7],[9],[12],[13] [7],[9],[12],[13] 4.00% [2],[3],[15],[19] 4.00% [2],[3],[15],[19] 4.00% [2],[3],[15],[19]  
Investment, basis spread, variable rate (as a percent)   6.00% [7],[9],[12],[13] 6.00% [7],[9],[12],[13] 6.00% [7],[9],[12],[13] 6.00% [7],[9],[12],[13] 6.00% [7],[9],[12],[13] 6.00% [7],[9],[12],[13] 7.00% [2],[3],[15],[19] 7.00% [2],[3],[15],[19] 7.00% [2],[3],[15],[19]  
Investment interest rate   10.10% [7],[9],[10],[12],[13] 10.10% [7],[9],[10],[12],[13] 10.10% [7],[9],[10],[12],[13] 10.10% [7],[9],[10],[12],[13] 10.10% [7],[9],[10],[12],[13] 10.10% [7],[9],[10],[12],[13] 7.70% [2],[3],[5],[15],[19] 7.70% [2],[3],[5],[15],[19] 7.70% [2],[3],[5],[15],[19]  
Principal   $ 31,348,000 [7],[9],[11],[12],[13]           $ 30,724,000 [2],[3],[6],[15],[19]      
Investment, Identifier [Axis]: Avalara, Inc., Application Software, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [1],[2],[3],[19]               (86,000)      
Investments at fair value [1],[2],[3],[19]               $ 0      
Investment, basis spread, variable rate (as a percent) [1],[2],[3],[19]               6.25% 6.25% 6.25%  
Principal [1],[2],[3],[6],[19]               $ 0      
Investment, Identifier [Axis]: Avalara, Inc., Application Software, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[19]               49,836,000      
Investments at fair value [2],[3],[19]               $ 50,470,000      
Investment, basis spread, variable rate (as a percent) [2],[3],[19]               6.25% 6.25% 6.25%  
Investment interest rate [2],[3],[5],[19]               10.85% 10.85% 10.85%  
Principal [2],[3],[6],[19]               $ 50,470,000      
Investment, Identifier [Axis]: BAART Programs, Inc., Health Care Services, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   3,159,000 [7],[9],[13],[17]           3,183,000 [2],[3],[19]      
Investments at fair value   $ 2,794,000 [7],[9],[13],[17]           $ 3,025,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.00% [7],[9],[13],[17] 5.00% [7],[9],[13],[17] 5.00% [7],[9],[13],[17] 5.00% [7],[9],[13],[17] 5.00% [7],[9],[13],[17] 5.00% [7],[9],[13],[17] 5.00% [2],[3],[19] 5.00% [2],[3],[19] 5.00% [2],[3],[19]  
Investment interest rate [2],[3],[5],[19]               9.87% 9.87% 9.87%  
Principal   $ 3,189,000 [7],[9],[11],[13],[17]           $ 3,214,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: BAART Programs, Inc., Health Care Services, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   1,242,000 [7],[9],[13],[17]           1,254,000 [2],[3],[19]      
Investments at fair value   $ 1,085,000 [7],[9],[13],[17]           $ 1,175,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.00% [7],[9],[13],[17] 5.00% [7],[9],[13],[17] 5.00% [7],[9],[13],[17] 5.00% [7],[9],[13],[17] 5.00% [7],[9],[13],[17] 5.00% [7],[9],[13],[17] 5.00% [2],[3],[19] 5.00% [2],[3],[19] 5.00% [2],[3],[19]  
Investment interest rate [2],[3],[5],[19]               9.87% 9.87% 9.87%  
Principal   $ 1,239,000 [7],[9],[11],[13],[17]           $ 1,248,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: BAART Programs, Inc., Health Care Services, Second Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   6,386,000 [7],[9],[13],[17]           6,386,000 [2],[3],[19]      
Investments at fair value   $ 2,323,000 [7],[9],[13],[17]           $ 5,550,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   8.50% [7],[9],[13],[17] 8.50% [7],[9],[13],[17] 8.50% [7],[9],[13],[17] 8.50% [7],[9],[13],[17] 8.50% [7],[9],[13],[17] 8.50% [7],[9],[13],[17] 8.50% [2],[3],[19] 8.50% [2],[3],[19] 8.50% [2],[3],[19]  
Investment interest rate [2],[3],[5],[19]               13.35% 13.35% 13.35%  
Principal   $ 6,452,000 [7],[9],[11],[13],[17]           $ 6,452,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: BAART Programs, Inc., Health Care Services, Second Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   8,817,000 [7],[9],[13],[17]           8,817,000 [2],[3],[19]      
Investments at fair value   $ 3,211,000 [7],[9],[13],[17]           $ 7,673,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   8.50% [7],[9],[13],[17] 8.50% [7],[9],[13],[17] 8.50% [7],[9],[13],[17] 8.50% [7],[9],[13],[17] 8.50% [7],[9],[13],[17] 8.50% [7],[9],[13],[17] 8.50% [2],[3],[19] 8.50% [2],[3],[19] 8.50% [2],[3],[19]  
Investment interest rate [2],[3],[5],[19]               13.37% 13.37% 13.37%  
Principal   $ 8,920,000 [7],[9],[11],[13],[17]           $ 8,920,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: BOTA BIDCO GMBH, Diversified Chemicals, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[12],[13]   4,003,000                  
Investments at fair value [7],[9],[12],[13]   $ 4,622,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[12],[13]   4.00% 4.00% 4.00% 4.00% 4.00% 4.00%        
Investment interest rate [7],[9],[10],[12],[13]   5.90% 5.90% 5.90% 5.90% 5.90% 5.90%        
Principal | € [7],[9],[11],[12],[13]     € 4,066                
Investment, Identifier [Axis]: BOTA BIDCO GMBH, Diversified Chemicals, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[12],[13]   $ 15,983,000                  
Investments at fair value [7],[9],[12],[13]   $ 18,150,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[12],[13]   4.50% 4.50% 4.50% 4.50% 4.50% 4.50%        
Investment interest rate [7],[9],[10],[12],[13]   6.41% 6.41% 6.41% 6.41% 6.41% 6.41%        
Principal [7],[9],[11],[12],[13]   $ 16,260,000                  
Investment, Identifier [Axis]: Barracuda Parent, LLC, Systems Software, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[13]   15,041,000                  
Investments at fair value [7],[9],[13]   $ 14,791,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[13]   6.50% 6.50% 6.50% 6.50% 6.50% 6.50%        
Investment interest rate [7],[9],[10],[13]   10.81% 10.81% 10.81% 10.81% 10.81% 10.81%        
Principal [7],[9],[11],[13]   $ 15,448,000                  
Investment, Identifier [Axis]: Bayou Intermediate II, LLC, Health Care Supplies, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[8],[9],[13]   (19,000)                  
Investments at fair value [7],[8],[9],[13]   $ (19,000)                  
Investment, basis spread, variable rate (as a percent) [7],[8],[9],[13]   4.75% 4.75% 4.75% 4.75% 4.75% 4.75%        
Principal [7],[8],[9],[11],[13]   $ 0                  
Investment, Identifier [Axis]: Bayou Intermediate II, LLC, Health Care Supplies, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[13]   13,044,000                  
Investments at fair value [7],[9],[13]   $ 13,044,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[13]   4.75% 4.75% 4.75% 4.75% 4.75% 4.75%        
Investment interest rate [7],[9],[10],[13]   8.91% 8.91% 8.91% 8.91% 8.91% 8.91%        
Principal [7],[9],[11],[13]   $ 13,176,000                  
Investment, Identifier [Axis]: Bayou Intermediate II, LLC, Health Care Supplies, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[8],[9],[13]   (18,000)                  
Investments at fair value [7],[8],[9],[13]   $ (18,000)                  
Investment, basis spread, variable rate (as a percent) [7],[8],[9],[13]   4.75% 4.75% 4.75% 4.75% 4.75% 4.75%        
Principal [7],[8],[9],[11],[13]   $ 0                  
Investment, Identifier [Axis]: Berner Food & Beverage, LLC, Soft Drinks & Non-alcoholic Beverages, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   1,835,000 [7],[8],[9],[13]           2,813,000 [1],[2],[3],[19]      
Investments at fair value   $ 1,802,000 [7],[8],[9],[13]           $ 2,811,000 [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   6.50% [7],[8],[9],[13] 6.50% [7],[8],[9],[13] 6.50% [7],[8],[9],[13] 6.50% [7],[8],[9],[13] 6.50% [7],[8],[9],[13] 6.50% [7],[8],[9],[13] 5.50% [1],[2],[3],[19] 5.50% [1],[2],[3],[19] 5.50% [1],[2],[3],[19]  
Investment interest rate   10.96% [7],[8],[9],[10],[13] 10.96% [7],[8],[9],[10],[13] 10.96% [7],[8],[9],[10],[13] 10.96% [7],[8],[9],[10],[13] 10.96% [7],[8],[9],[10],[13] 10.96% [7],[8],[9],[10],[13] 10.52% [1],[2],[3],[5],[19] 10.52% [1],[2],[3],[5],[19] 10.52% [1],[2],[3],[5],[19]  
Principal   $ 1,844,000 [7],[8],[9],[11],[13]           $ 2,835,000 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: Berner Food & Beverage, LLC, Soft Drinks & Non-alcoholic Beverages, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[19]               40,085,000      
Investments at fair value [2],[3],[19]               $ 39,863,000      
Investment, basis spread, variable rate (as a percent) [2],[3],[19]               5.50% 5.50% 5.50%  
Investment interest rate [2],[3],[5],[19]               10.90% 10.90% 10.90%  
Principal [2],[3],[6],[19]               $ 40,246,000      
Investment, Identifier [Axis]: Berner Food & Beverage, LLC, Soft Drinks & Non-alcoholic Beverages, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[13]   39,728,000                  
Investments at fair value [7],[9],[13]   $ 39,181,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[13]   6.50% 6.50% 6.50% 6.50% 6.50% 6.50%        
Investment interest rate [7],[9],[10],[13]   10.96% 10.96% 10.96% 10.96% 10.96% 10.96%        
Principal [7],[9],[11],[13]   $ 39,831,000                  
Investment, Identifier [Axis]: Berner Food & Beverage, LLC, Soft Drinks & Non-alcoholic Beverages, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[13]   4,337,000                  
Investments at fair value [7],[9],[13]   $ 4,297,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[13]   6.50% 6.50% 6.50% 6.50% 6.50% 6.50%        
Investment interest rate [7],[9],[10],[13]   10.67% 10.67% 10.67% 10.67% 10.67% 10.67%        
Principal [7],[9],[11],[13]   $ 4,368,000                  
Investment, Identifier [Axis]: BioXcel Therapeutics, Inc., Pharmaceuticals, Common Stock                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [9],[12],[20]   0                  
Investments at fair value [9],[12],[20]   $ 68,000                  
Investment owned, balance (in shares) | shares [9],[12],[20]   26,654 26,654 26,654 26,654 26,654 26,654        
Investment, Identifier [Axis]: BioXcel Therapeutics, Inc., Pharmaceuticals, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   $ 3,083,000 [7],[9],[12]           0 [1],[2],[3],[15],[19]      
Investments at fair value   $ 2,696,000 [7],[9],[12]           $ 0 [1],[2],[3],[15],[19]      
Investment, basis spread, variable rate (as a percent) [1],[2],[3],[15],[19]               7.50% 7.50% 7.50%  
Investment interest rate   13.00% [7],[9],[10],[12] 13.00% [7],[9],[10],[12] 13.00% [7],[9],[10],[12] 13.00% [7],[9],[10],[12] 13.00% [7],[9],[10],[12] 13.00% [7],[9],[10],[12] [1],[2],[3],[5],[15],[19] [1],[2],[3],[5],[15],[19] [1],[2],[3],[5],[15],[19]  
Principal   $ 3,084,000 [7],[9],[11],[12]           $ 0 [1],[2],[3],[6],[15],[19]      
Investment, Identifier [Axis]: BioXcel Therapeutics, Inc., Pharmaceuticals, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   7,355,000 [7],[9],[12]           2,928,000 [2],[3],[15],[19]      
Investments at fair value   $ 6,505,000 [7],[9],[12]           $ 2,600,000 [2],[3],[15],[19]      
Investment, interest rate, paid in kind (as a percent) [2],[3],[15],[19]               4.10% 4.10% 4.10%  
Investment, basis spread, variable rate (as a percent) [2],[3],[15],[19]               7.50% 7.50% 7.50%  
Investment interest rate   13.00% [7],[9],[10],[12] 13.00% [7],[9],[10],[12] 13.00% [7],[9],[10],[12] 13.00% [7],[9],[10],[12] 13.00% [7],[9],[10],[12] 13.00% [7],[9],[10],[12] 8.00% [2],[3],[5],[15],[19] 8.00% [2],[3],[5],[15],[19] 8.00% [2],[3],[5],[15],[19]  
Principal   $ 7,439,000 [7],[9],[11],[12]           $ 2,930,000 [2],[3],[6],[15],[19]      
Investment, Identifier [Axis]: BioXcel Therapeutics, Inc., Pharmaceuticals, First Lien Term Loan 3                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   0 [7],[8],[9],[12]           6,921,000 [2],[3],[15],[19]      
Investments at fair value   $ 0 [7],[8],[9],[12]           $ 6,268,000 [2],[3],[15],[19]      
Investment, interest rate, paid in kind (as a percent) [2],[3],[15],[19]               4.10% 4.10% 4.10%  
Investment, basis spread, variable rate (as a percent) [2],[3],[15],[19]               7.50% 7.50% 7.50%  
Investment interest rate   13.00% [7],[8],[9],[10],[12] 13.00% [7],[8],[9],[10],[12] 13.00% [7],[8],[9],[10],[12] 13.00% [7],[8],[9],[10],[12] 13.00% [7],[8],[9],[10],[12] 13.00% [7],[8],[9],[10],[12] 8.00% [2],[3],[5],[15],[19] 8.00% [2],[3],[5],[15],[19] 8.00% [2],[3],[5],[15],[19]  
Principal   $ 0 [7],[8],[9],[11],[12]           $ 7,062,000 [2],[3],[6],[15],[19]      
Investment, Identifier [Axis]: BioXcel Therapeutics, Inc., Pharmaceuticals, First Lien Term Loan 4                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   0 [7],[8],[9],[12]           0 [1],[2],[3],[15],[19]      
Investments at fair value   $ 0 [7],[8],[9],[12]           $ 0 [1],[2],[3],[15],[19]      
Investment, basis spread, variable rate (as a percent) [1],[2],[3],[15],[19]               7.50% 7.50% 7.50%  
Investment interest rate [7],[8],[9],[10],[12]   13.00% 13.00% 13.00% 13.00% 13.00% 13.00%        
Principal   $ 0 [7],[8],[9],[11],[12]           $ 0 [1],[2],[3],[6],[15],[19]      
Investment, Identifier [Axis]: BioXcel Therapeutics, Inc., Pharmaceuticals, First Lien Term Loan 5                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [1],[2],[3],[15],[19]               0      
Investments at fair value [1],[2],[3],[15],[19]               $ 0      
Investment, basis spread, variable rate (as a percent) [1],[2],[3],[15],[19]               7.50% 7.50% 7.50%  
Principal [1],[2],[3],[6],[15],[19]               $ 0      
Investment, Identifier [Axis]: BioXcel Therapeutics, Inc., Pharmaceuticals, Warrants 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   225,000 [7],[9],[12],[20]           225,000 [2],[3],[15]      
Investments at fair value   $ 3,000 [7],[9],[12],[20]           $ 10,000 [2],[3],[15]      
Investment owned, balance (in shares) | shares   2,044 [7],[9],[12],[20] 2,044 [7],[9],[12],[20] 2,044 [7],[9],[12],[20] 2,044 [7],[9],[12],[20] 2,044 [7],[9],[12],[20] 2,044 [7],[9],[12],[20] 32,664 [2],[3],[15] 32,664 [2],[3],[15] 32,664 [2],[3],[15]  
Investment, Identifier [Axis]: BioXcel Therapeutics, Inc., Pharmaceuticals, Warrants 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   $ 0 [7],[9],[12],[20]           $ 0 [2],[3],[15]      
Investments at fair value   $ 1,000 [7],[9],[12],[20]           $ 3,000 [2],[3],[15]      
Investment owned, balance (in shares) | shares   586 [7],[9],[12],[20] 586 [7],[9],[12],[20] 586 [7],[9],[12],[20] 586 [7],[9],[12],[20] 586 [7],[9],[12],[20] 586 [7],[9],[12],[20] 9,382 [2],[3],[15] 9,382 [2],[3],[15] 9,382 [2],[3],[15]  
Investment, Identifier [Axis]: Blackhawk Network Holdings, Inc., Data Processing & Outsourced Services, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[19]               $ 18,991,000      
Investments at fair value [2],[19]               $ 19,444,000      
Investment, basis spread, variable rate (as a percent) [2],[19]               5.00% 5.00% 5.00%  
Investment interest rate [2],[5],[19]               9.85% 9.85% 9.85%  
Principal [2],[6],[19]               $ 19,336,000      
Investment, Identifier [Axis]: Blazing Star Parent, LLC, Drug Retail, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[13]   $ 29,700,000                  
Investments at fair value [7],[9],[13]   $ 29,698,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[13]   7.00% 7.00% 7.00% 7.00% 7.00% 7.00%        
Investment interest rate [7],[9],[10],[13]   11.20% 11.20% 11.20% 11.20% 11.20% 11.20%        
Principal [7],[9],[11],[13]   $ 30,447,000                  
Investment, Identifier [Axis]: Blumenthal Temecula, LLC, Automotive Retail, Common Stock                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   424,000 [7],[9],[20],[25]           424,000 [2],[3]      
Investments at fair value   $ 63,000 [7],[9],[20],[25]           $ 79,000 [2],[3]      
Investment owned, balance (in shares) | shares   394,297 [7],[9],[20],[25] 394,297 [7],[9],[20],[25] 394,297 [7],[9],[20],[25] 394,297 [7],[9],[20],[25] 394,297 [7],[9],[20],[25] 394,297 [7],[9],[20],[25] 394,297 [2],[3] 394,297 [2],[3] 394,297 [2],[3]  
Investment, Identifier [Axis]: Blumenthal Temecula, LLC, Automotive Retail, Preferred Equity 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   $ 1,711,000 [7],[9],[20]           $ 1,711,000 [2],[3]      
Investments at fair value   $ 2,512,000 [7],[9],[20]           $ 2,136,000 [2],[3]      
Investment owned, balance (in shares) | shares   1,708,618 [7],[9],[20] 1,708,618 [7],[9],[20] 1,708,618 [7],[9],[20] 1,708,618 [7],[9],[20] 1,708,618 [7],[9],[20] 1,708,618 [7],[9],[20] 1,708,618 [2],[3] 1,708,618 [2],[3] 1,708,618 [2],[3]  
Investment, Identifier [Axis]: Blumenthal Temecula, LLC, Automotive Retail, Preferred Equity 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   $ 395,000 [7],[9],[20]           $ 395,000 [2],[3]      
Investments at fair value   $ 560,000 [7],[9],[20]           $ 477,000 [2],[3]      
Investment owned, balance (in shares) | shares   394,297 [7],[9],[20] 394,297 [7],[9],[20] 394,297 [7],[9],[20] 394,297 [7],[9],[20] 394,297 [7],[9],[20] 394,297 [7],[9],[20] 394,297 [2],[3] 394,297 [2],[3] 394,297 [2],[3]  
Investment, Identifier [Axis]: C5 Technology Holdings, LLC, Data Processing & Outsourced Services, Common Stock                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00%  
Investment owned, at cost   $ 0 [7],[20],[26],[27]           $ 0 [3],[28],[29]      
Investments at fair value   $ 0 [7],[20],[26],[27]           $ 0 [3],[28],[29]     0
Investment owned, balance (in shares) | shares   829 [7],[20],[26],[27] 829 [7],[20],[26],[27] 829 [7],[20],[26],[27] 829 [7],[20],[26],[27] 829 [7],[20],[26],[27] 829 [7],[20],[26],[27] 829 [3],[28],[29] 829 [3],[28],[29] 829 [3],[28],[29]  
Investment, Identifier [Axis]: C5 Technology Holdings, LLC, Data Processing & Outsourced Services, Preferred Equity                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   1.80% 1.80% 1.80% 1.80% 1.80% 1.80% 1.90% 1.90% 1.90%  
Investment owned, at cost   $ 34,984,000 [7],[20],[26],[27]           $ 34,984,000 [3],[28],[29]      
Investments at fair value   $ 25,889,000 [7],[20],[26],[27]           $ 27,638,000 [3],[28],[29]     27,638,000
Investment owned, balance (in shares) | shares   34,984,460 [7],[20],[26],[27] 34,984,460 [7],[20],[26],[27] 34,984,460 [7],[20],[26],[27] 34,984,460 [7],[20],[26],[27] 34,984,460 [7],[20],[26],[27] 34,984,460 [7],[20],[26],[27] 34,984,460 [3],[28],[29] 34,984,460 [3],[28],[29] 34,984,460 [3],[28],[29]  
Investment, Identifier [Axis]: CBAM 2017-2, LTD., Multi-Sector Holdings, CLO Notes                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[15],[19]               $ 458,000      
Investments at fair value [2],[15],[19]               $ 462,000      
Investment, basis spread, variable rate (as a percent) [2],[15],[19]               7.36% 7.36% 7.36%  
Investment interest rate [2],[5],[15],[19]               12.65% 12.65% 12.65%  
Principal [2],[6],[15],[19]               $ 489,000      
Investment, Identifier [Axis]: CD&R Firefly Bidco Limited, Other Specialty Retail, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[15],[19]               18,480,000      
Investments at fair value [2],[15],[19]               $ 19,878,000      
Investment, basis spread, variable rate (as a percent) [2],[15],[19]               5.75% 5.75% 5.75%  
Investment interest rate [2],[5],[15],[19]               10.95% 10.95% 10.95%  
Principal | £ [2],[6],[15],[19]                   £ 14,807  
Investment, Identifier [Axis]: CD&R Firefly Bidco Limited, Other Specialty Retail, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[15],[19]               $ 18,330,000      
Investments at fair value [2],[15],[19]               $ 19,782,000      
Investment, basis spread, variable rate (as a percent) [2],[15],[19]               5.50% 5.50% 5.50%  
Investment interest rate [2],[5],[15],[19]               10.45% 10.45% 10.45%  
Principal [2],[6],[15],[19]               $ 14,725,000      
Investment, Identifier [Axis]: CIELO BIDCO LIMITED, Building Products, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[8],[9],[12],[13]   $ (16,000)                  
Investments at fair value [7],[8],[9],[12],[13]   $ (15,000)                  
Investment, basis spread, variable rate (as a percent) [7],[8],[9],[12],[13]   4.75% 4.75% 4.75% 4.75% 4.75% 4.75%        
Principal [7],[8],[9],[11],[12],[13]   $ 0                  
Investment, Identifier [Axis]: CIELO BIDCO LIMITED, Building Products, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[12],[13]   13,839,000                  
Investments at fair value [7],[9],[12],[13]   $ 13,755,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[12],[13]   4.75% 4.75% 4.75% 4.75% 4.75% 4.75%        
Investment interest rate [7],[9],[10],[12],[13]   8.72% 8.72% 8.72% 8.72% 8.72% 8.72%        
Principal | £ [7],[9],[11],[12],[13]       £ 10,313              
Investment, Identifier [Axis]: CIELO BIDCO LIMITED, Building Products, First Lien Term Loan 3                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[12],[13]   $ 2,770,000                  
Investments at fair value [7],[9],[12],[13]   $ 2,788,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[12],[13]   4.75% 4.75% 4.75% 4.75% 4.75% 4.75%        
Investment interest rate [7],[9],[10],[12],[13]   6.65% 6.65% 6.65% 6.65% 6.65% 6.65%        
Principal | € [7],[9],[11],[12],[13]     € 2,395                
Investment, Identifier [Axis]: Caregiver Services, Inc., Health Care Services, Preferred Equity                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00%  
Investment owned, at cost [3],[22]               $ 875,000      
Investments at fair value   $ 0           $ 594,000 [3],[22]     432,000
Investment owned, balance (in shares) | shares   1,080,398 1,080,398 1,080,398 1,080,398 1,080,398 1,080,398 1,080,398 [3],[22] 1,080,398 [3],[22] 1,080,398 [3],[22]  
Investment, Identifier [Axis]: Carlyle Global Market Strategies, Multi-Sector Holdings, CLO Notes                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [9],[12],[13]   $ 3,731,000                  
Investments at fair value [9],[12],[13]   $ 3,658,000                  
Investment, basis spread, variable rate (as a percent) [9],[12],[13]   7.50% 7.50% 7.50% 7.50% 7.50% 7.50%        
Investment interest rate [9],[10],[12],[13]   11.83% 11.83% 11.83% 11.83% 11.83% 11.83%        
Principal [9],[11],[12],[13]   $ 3,575,000                  
Investment, Identifier [Axis]: Centralsquare Technologies, LLC, Application Software, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   (27,000) [7],[8],[9],[13]           $ (33,000) [1],[2],[3],[19]      
Investments at fair value   $ (1,000) [7],[8],[9],[13]           $ (15,000) [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.75% [7],[8],[9],[13] 5.75% [7],[8],[9],[13] 5.75% [7],[8],[9],[13] 5.75% [7],[8],[9],[13] 5.75% [7],[8],[9],[13] 5.75% [7],[8],[9],[13] 6.00% [1],[2],[3],[19] 6.00% [1],[2],[3],[19] 6.00% [1],[2],[3],[19]  
Principal   $ 0 [7],[8],[9],[11],[13]           $ 0 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: Centralsquare Technologies, LLC, Application Software, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   12,922,000 [7],[9],[13]           12,539,000 [2],[3],[19]      
Investments at fair value   $ 13,141,000 [7],[9],[13]           $ 12,694,000 [2],[3],[19]      
Investment, interest rate, paid in kind (as a percent)   3.38% [7],[9],[13] 3.38% [7],[9],[13] 3.38% [7],[9],[13] 3.38% [7],[9],[13] 3.38% [7],[9],[13] 3.38% [7],[9],[13] 3.50% [2],[3],[19] 3.50% [2],[3],[19] 3.50% [2],[3],[19]  
Investment, basis spread, variable rate (as a percent)   6.25% [7],[9],[13] 6.25% [7],[9],[13] 6.25% [7],[9],[13] 6.25% [7],[9],[13] 6.25% [7],[9],[13] 6.25% [7],[9],[13] 6.50% [2],[3],[19] 6.50% [2],[3],[19] 6.50% [2],[3],[19]  
Investment interest rate   7.03% [7],[9],[10],[13] 7.03% [7],[9],[10],[13] 7.03% [7],[9],[10],[13] 7.03% [7],[9],[10],[13] 7.03% [7],[9],[10],[13] 7.03% [7],[9],[10],[13] 8.10% [2],[3],[5],[19] 8.10% [2],[3],[5],[19] 8.10% [2],[3],[5],[19]  
Principal   $ 13,159,000 [7],[9],[11],[13]           $ 12,830,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Connect Holding II LLC, Alternative Carriers, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [9],[13]   14,480,000                  
Investments at fair value [9],[13]   $ 14,392,000                  
Investment, basis spread, variable rate (as a percent) [9],[13]   4.25% 4.25% 4.25% 4.25% 4.25% 4.25%        
Investment interest rate [9],[10],[13]   8.40% 8.40% 8.40% 8.40% 8.40% 8.40%        
Principal [9],[11],[13]   $ 15,800,000                  
Investment, Identifier [Axis]: Connect Holding II LLC, Alternative Carriers, Fixed Rate Bond                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [9]   3,700,000                  
Investments at fair value [9]   $ 3,812,000                  
Investment interest rate [9],[10]   10.50% 10.50% 10.50% 10.50% 10.50% 10.50%        
Principal [9],[11]   $ 3,812,000                  
Investment, Identifier [Axis]: Continental Intermodal Group LP, Oil & Gas Storage & Transportation, Common Stock                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   0.70% 0.70% 0.70% 0.70% 0.70% 0.70% 0.80% 0.80% 0.80%  
Investment owned, at cost   $ 16,172,000 [7],[20],[26],[27]           $ 16,172,000 [3],[28],[29]      
Investments at fair value   $ 10,466,000 [7],[20],[26],[27]           $ 12,247,000 [3],[28],[29]     0
Investment owned, balance (in shares) | shares   22,267,661 [7],[20],[26],[27] 22,267,661 [7],[20],[26],[27] 22,267,661 [7],[20],[26],[27] 22,267,661 [7],[20],[26],[27] 22,267,661 [7],[20],[26],[27] 22,267,661 [7],[20],[26],[27] 22,267,661 [3],[28],[29] 22,267,661 [3],[28],[29] 22,267,661 [3],[28],[29]  
Investment, Identifier [Axis]: Continental Intermodal Group LP, Oil & Gas Storage & Transportation, Preferred Equity                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   0.30% 0.30% 0.30% 0.30% 0.30% 0.30% 0.20% 0.20% 0.20%  
Investment owned, at cost   $ 3,137,000 [7],[20],[26],[27]           $ 3,137,000 [3],[28],[29]      
Investments at fair value   $ 3,671,000 [7],[20],[26],[27]           $ 3,357,000 [3],[28],[29]     0
Investment owned, balance (in shares) | shares   3,137,476 [7],[20],[26],[27] 3,137,476 [7],[20],[26],[27] 3,137,476 [7],[20],[26],[27] 3,137,476 [7],[20],[26],[27] 3,137,476 [7],[20],[26],[27] 3,137,476 [7],[20],[26],[27] 3,137,476 [3],[28],[29] 3,137,476 [3],[28],[29] 3,137,476 [3],[28],[29]  
Investment, Identifier [Axis]: Conviva Inc., Application Software, Preferred Equity                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   $ 605,000 [7],[9],[20]           $ 605,000 [2],[3]      
Investments at fair value   $ 894,000 [7],[9],[20]           $ 894,000 [2],[3]      
Investment owned, balance (in shares) | shares   417,851 [7],[9],[20] 417,851 [7],[9],[20] 417,851 [7],[9],[20] 417,851 [7],[9],[20] 417,851 [7],[9],[20] 417,851 [7],[9],[20] 417,851 [2],[3] 417,851 [2],[3] 417,851 [2],[3]  
Investment, Identifier [Axis]: CoreRx, Inc., Pharmaceuticals, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   $ 6,380,000 [7],[9],[13]           $ 6,347,000 [2],[3],[19]      
Investments at fair value   $ 6,478,000 [7],[9],[13]           $ 6,348,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   7.50% [7],[9],[13] 7.50% [7],[9],[13] 7.50% [7],[9],[13] 7.50% [7],[9],[13] 7.50% [7],[9],[13] 7.50% [7],[9],[13] 7.50% [2],[3],[19] 7.50% [2],[3],[19] 7.50% [2],[3],[19]  
Investment interest rate   11.50% [7],[9],[10],[13] 11.50% [7],[9],[10],[13] 11.50% [7],[9],[10],[13] 11.50% [7],[9],[10],[13] 11.50% [7],[9],[10],[13] 11.50% [7],[9],[10],[13] 12.10% [2],[3],[5],[19] 12.10% [2],[3],[5],[19] 12.10% [2],[3],[5],[19]  
Principal   $ 6,494,000 [7],[9],[11],[13]           $ 6,494,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Coupa Holdings, LLC, Application Software First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[13]   12,787,000                  
Investments at fair value [7],[9],[13]   $ 12,993,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[13]   5.25% 5.25% 5.25% 5.25% 5.25% 5.25%        
Investment interest rate [7],[9],[10],[13]   9.56% 9.56% 9.56% 9.56% 9.56% 9.56%        
Principal [7],[9],[11],[13]   $ 12,993,000                  
Investment, Identifier [Axis]: Coupa Holdings, LLC, Application Software, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   (13,000) [7],[8],[9],[13]           (17,000) [1],[2],[3],[19]      
Investments at fair value   $ 0 [7],[8],[9],[13]           $ 0 [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.25% [7],[8],[9],[13] 5.25% [7],[8],[9],[13] 5.25% [7],[8],[9],[13] 5.25% [7],[8],[9],[13] 5.25% [7],[8],[9],[13] 5.25% [7],[8],[9],[13] 5.50% [1],[2],[3],[19] 5.50% [1],[2],[3],[19] 5.50% [1],[2],[3],[19]  
Principal   $ 0 [7],[8],[9],[11],[13]           $ 0 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: Coupa Holdings, LLC, Application Software, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [1],[2],[3],[19]               (15,000)      
Investments at fair value [1],[2],[3],[19]               $ 0      
Investment, basis spread, variable rate (as a percent) [1],[2],[3],[19]               5.50% 5.50% 5.50%  
Principal [1],[2],[3],[6],[19]               $ 0      
Investment, Identifier [Axis]: Coupa Holdings, LLC, Application Software, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   (15,000) [7],[8],[9],[13]           12,870,000 [2],[3],[19]      
Investments at fair value   $ 0 [7],[8],[9],[13]           $ 13,124,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.25% [7],[8],[9],[13] 5.25% [7],[8],[9],[13] 5.25% [7],[8],[9],[13] 5.25% [7],[8],[9],[13] 5.25% [7],[8],[9],[13] 5.25% [7],[8],[9],[13] 5.50% [2],[3],[19] 5.50% [2],[3],[19] 5.50% [2],[3],[19]  
Investment interest rate [2],[3],[5],[19]               10.75% 10.75% 10.75%  
Principal   $ 0 [7],[8],[9],[11],[13]           $ 13,124,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Covetrus, Inc., Health Care Distributors, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[19]               10,518,000      
Investments at fair value [2],[19]               $ 10,341,000      
Investment, basis spread, variable rate (as a percent) [2],[19]               5.00% 5.00% 5.00%  
Investment interest rate [2],[5],[19]               9.60% 9.60% 9.60%  
Principal [2],[6],[19]               $ 10,878,000      
Investment, Identifier [Axis]: Creek Parent, Inc., Life Sciences Tools & Services, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[8],[9],[13]   (107,000)                  
Investments at fair value [7],[8],[9],[13]   $ (131,000)                  
Investment, basis spread, variable rate (as a percent) [7],[8],[9],[13]   5.00% 5.00% 5.00% 5.00% 5.00% 5.00%        
Principal [7],[8],[9],[11],[13]   $ 0                  
Investment, Identifier [Axis]: Creek Parent, Inc.., Life Sciences Tools & Services, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[13]   47,003,000                  
Investments at fair value [7],[9],[13]   $ 46,843,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[13]   5.00% 5.00% 5.00% 5.00% 5.00% 5.00%        
Investment interest rate [7],[9],[10],[13]   9.14% 9.14% 9.14% 9.14% 9.14% 9.14%        
Principal [7],[9],[11],[13]   $ 47,745,000                  
Investment, Identifier [Axis]: Crewline Buyer, Inc., Systems Software, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   (40,000) [7],[8],[9],[13]           (48,000) [1],[2],[3],[19]      
Investments at fair value   $ (22,000) [7],[8],[9],[13]           $ (31,000) [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   6.75% [7],[8],[9],[13] 6.75% [7],[8],[9],[13] 6.75% [7],[8],[9],[13] 6.75% [7],[8],[9],[13] 6.75% [7],[8],[9],[13] 6.75% [7],[8],[9],[13] 6.75% [1],[2],[3],[19] 6.75% [1],[2],[3],[19] 6.75% [1],[2],[3],[19]  
Principal   $ 0 [7],[8],[9],[11],[13]           $ 0 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: Crewline Buyer, Inc., Systems Software, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[19]               20,468,000      
Investments at fair value [2],[3],[19]               $ 20,627,000      
Investment, basis spread, variable rate (as a percent) [2],[3],[19]               6.75% 6.75% 6.75%  
Investment interest rate [2],[3],[5],[19]               11.35% 11.35% 11.35%  
Principal [2],[3],[6],[19]               $ 20,924,000      
Investment, Identifier [Axis]: Crewline Buyer, Inc., Systems Software, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[13]   20,543,000                  
Investments at fair value [7],[9],[13]   $ 20,715,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[13]   6.75% 6.75% 6.75% 6.75% 6.75% 6.75%        
Investment interest rate [7],[9],[10],[13]   10.91% 10.91% 10.91% 10.91% 10.91% 10.91%        
Principal [7],[9],[11],[13]   $ 20,924,000                  
Investment, Identifier [Axis]: Crewline Buyer, Inc., Systems Software, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[13]   1,390,000                  
Investments at fair value [7],[9],[13]   $ 1,406,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[13]   6.75% 6.75% 6.75% 6.75% 6.75% 6.75%        
Investment interest rate [7],[9],[10],[13]   10.91% 10.91% 10.91% 10.91% 10.91% 10.91%        
Principal [7],[9],[11],[13]   $ 1,420,000                  
Investment, Identifier [Axis]: DTI Holdco, Inc., Research & Consulting Services, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [9],[13]   22,437,000                  
Investments at fair value [9],[13]   $ 20,451,000                  
Investment, basis spread, variable rate (as a percent) [9],[13]   4.00% 4.00% 4.00% 4.00% 4.00% 4.00%        
Investment interest rate [9],[10],[13]   8.16% 8.16% 8.16% 8.16% 8.16% 8.16%        
Principal [9],[11],[13]   $ 22,882,000                  
Investment, Identifier [Axis]: Delta Leasing SPV II LLC, Specialized Finance, Common Stock                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   2,000 [7],[9],[12],[20]           2,000 [2],[3],[15]      
Investments at fair value   $ 3,000 [7],[9],[12],[20]           $ 2,000 [2],[3],[15]      
Investment owned, balance (in shares) | shares   2 [7],[9],[12],[20] 2 [7],[9],[12],[20] 2 [7],[9],[12],[20] 2 [7],[9],[12],[20] 2 [7],[9],[12],[20] 2 [7],[9],[12],[20] 2 [2],[3],[15] 2 [2],[3],[15] 2 [2],[3],[15]  
Investment, Identifier [Axis]: Delta Leasing SPV II LLC, Specialized Finance, Preferred Equity                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   $ 419,000 [7],[9],[12],[20]           $ 419,000 [2],[3],[15]      
Investments at fair value   $ 594,000 [7],[9],[12],[20]           $ 531,000 [2],[3],[15]      
Investment owned, balance (in shares) | shares   419 [7],[9],[12],[20] 419 [7],[9],[12],[20] 419 [7],[9],[12],[20] 419 [7],[9],[12],[20] 419 [7],[9],[12],[20] 419 [7],[9],[12],[20] 419 [2],[3],[15] 419 [2],[3],[15] 419 [2],[3],[15]  
Investment, Identifier [Axis]: Delta Leasing SPV II LLC, Specialized Finance, Subordinated Debt Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   $ 12,378,000 [7],[9],[12]           $ 8,456,000 [1],[2],[3],[15]      
Investments at fair value   $ 12,378,000 [7],[9],[12]           $ 8,456,000 [1],[2],[3],[15]      
Investment, interest rate, paid in kind (as a percent)   3.00% [7],[9],[12] 3.00% [7],[9],[12] 3.00% [7],[9],[12] 3.00% [7],[9],[12] 3.00% [7],[9],[12] 3.00% [7],[9],[12] 3.00% [1],[2],[3],[15] 3.00% [1],[2],[3],[15] 3.00% [1],[2],[3],[15]  
Investment interest rate   8.00% [7],[9],[10],[12] 8.00% [7],[9],[10],[12] 8.00% [7],[9],[10],[12] 8.00% [7],[9],[10],[12] 8.00% [7],[9],[10],[12] 8.00% [7],[9],[10],[12] 8.00% [1],[2],[3],[5],[15] 8.00% [1],[2],[3],[5],[15] 8.00% [1],[2],[3],[5],[15]  
Principal   $ 12,378,000 [7],[9],[11],[12]           $ 8,456,000 [1],[2],[3],[6],[15]      
Investment, Identifier [Axis]: Delta Leasing SPV II LLC, Specialized Finance, Subordinated Debt Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   36,782,000 [7],[9],[12]           34,316,000 [2],[3],[15]      
Investments at fair value   $ 36,782,000 [7],[9],[12]           $ 34,316,000 [2],[3],[15]      
Investment, interest rate, paid in kind (as a percent)   7.00% [7],[9],[12] 7.00% [7],[9],[12] 7.00% [7],[9],[12] 7.00% [7],[9],[12] 7.00% [7],[9],[12] 7.00% [7],[9],[12] 7.00% [2],[3],[15] 7.00% [2],[3],[15] 7.00% [2],[3],[15]  
Investment interest rate   3.00% [7],[9],[10],[12] 3.00% [7],[9],[10],[12] 3.00% [7],[9],[10],[12] 3.00% [7],[9],[10],[12] 3.00% [7],[9],[10],[12] 3.00% [7],[9],[10],[12] 3.00% [2],[3],[5],[15] 3.00% [2],[3],[5],[15] 3.00% [2],[3],[5],[15]  
Principal   $ 36,782,000 [7],[9],[11],[12]           $ 34,316,000 [2],[3],[6],[15]      
Investment, Identifier [Axis]: Delta Leasing SPV II LLC, Specialized Finance, Warrants                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   0 [7],[9],[12],[20]           0 [2],[3],[15]      
Investments at fair value   $ 0 [7],[9],[12],[20]           $ 0 [2],[3],[15]      
Investment owned, balance (in shares) | shares   31 [7],[9],[12],[20] 31 [7],[9],[12],[20] 31 [7],[9],[12],[20] 31 [7],[9],[12],[20] 31 [7],[9],[12],[20] 31 [7],[9],[12],[20] 31 [2],[3],[15] 31 [2],[3],[15] 31 [2],[3],[15]  
Investment, Identifier [Axis]: Dialyze Holdings, LLC, Health Care Equipment, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   $ 23,264,000 [7],[9],[13],[17]           $ 23,264,000 [2],[3],[19]      
Investments at fair value   $ 5,522,000 [7],[9],[13],[17]           $ 21,175,000 [2],[3],[19]      
Investment, interest rate, paid in kind (as a percent) [2],[3],[19]               15.75% 15.75% 15.75%  
Investment, basis spread, variable rate (as a percent)   11.00% [7],[9],[13],[17] 11.00% [7],[9],[13],[17] 11.00% [7],[9],[13],[17] 11.00% [7],[9],[13],[17] 11.00% [7],[9],[13],[17] 11.00% [7],[9],[13],[17] 11.00% [2],[3],[19] 11.00% [2],[3],[19] 11.00% [2],[3],[19]  
Principal   $ 27,612,000 [7],[9],[11],[13],[17]           $ 23,660,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Dialyze Holdings, LLC, Health Care Equipment, First Lien Term Loan 10                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[13],[17]   411,000                  
Investments at fair value [7],[9],[13],[17]   $ 89,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[13],[17]   11.00% 11.00% 11.00% 11.00% 11.00% 11.00%        
Principal [7],[9],[11],[13],[17]   $ 443,000                  
Investment, Identifier [Axis]: Dialyze Holdings, LLC, Health Care Equipment, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   655,000 [7],[9],[13],[17]           655,000 [2],[3],[19]      
Investments at fair value   $ 153,000 [7],[9],[13],[17]           $ 586,000 [2],[3],[19]      
Investment, interest rate, paid in kind (as a percent) [2],[3],[19]               15.75% 15.75% 15.75%  
Investment, basis spread, variable rate (as a percent)   11.00% [7],[9],[13],[17] 11.00% [7],[9],[13],[17] 11.00% [7],[9],[13],[17] 11.00% [7],[9],[13],[17] 11.00% [7],[9],[13],[17] 11.00% [7],[9],[13],[17] 11.00% [2],[3],[19] 11.00% [2],[3],[19] 11.00% [2],[3],[19]  
Principal   $ 764,000 [7],[9],[11],[13],[17]           $ 655,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Dialyze Holdings, LLC, Health Care Equipment, First Lien Term Loan 3                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   655,000 [7],[9],[13],[17]           647,000 [2],[3],[19]      
Investments at fair value   $ 151,000 [7],[9],[13],[17]           $ 579,000 [2],[3],[19]      
Investment, interest rate, paid in kind (as a percent) [2],[3],[19]               15.75% 15.75% 15.75%  
Investment, basis spread, variable rate (as a percent)   11.00% [7],[9],[13],[17] 11.00% [7],[9],[13],[17] 11.00% [7],[9],[13],[17] 11.00% [7],[9],[13],[17] 11.00% [7],[9],[13],[17] 11.00% [7],[9],[13],[17] 11.00% [2],[3],[19] 11.00% [2],[3],[19] 11.00% [2],[3],[19]  
Principal   $ 756,000 [7],[9],[11],[13],[17]           $ 647,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Dialyze Holdings, LLC, Health Care Equipment, First Lien Term Loan 4                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   1,044,000 [7],[9],[13],[17]           1,039,000 [2],[3],[19]      
Investments at fair value   $ 242,000 [7],[9],[13],[17]           $ 929,000 [2],[3],[19]      
Investment, interest rate, paid in kind (as a percent) [2],[3],[19]               15.75% 15.75% 15.75%  
Investment, basis spread, variable rate (as a percent)   11.00% [7],[9],[13],[17] 11.00% [7],[9],[13],[17] 11.00% [7],[9],[13],[17] 11.00% [7],[9],[13],[17] 11.00% [7],[9],[13],[17] 11.00% [7],[9],[13],[17] 11.00% [2],[3],[19] 11.00% [2],[3],[19] 11.00% [2],[3],[19]  
Principal   $ 1,212,000 [7],[9],[11],[13],[17]           $ 1,039,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Dialyze Holdings, LLC, Health Care Equipment, First Lien Term Loan 5                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   858,000 [7],[9],[13],[17]           852,000 [2],[3],[19]      
Investments at fair value   $ 199,000 [7],[9],[13],[17]           $ 762,000 [2],[3],[19]      
Investment, interest rate, paid in kind (as a percent) [2],[3],[19]               15.75% 15.75% 15.75%  
Investment, basis spread, variable rate (as a percent)   11.00% [7],[9],[13],[17] 11.00% [7],[9],[13],[17] 11.00% [7],[9],[13],[17] 11.00% [7],[9],[13],[17] 11.00% [7],[9],[13],[17] 11.00% [7],[9],[13],[17] 11.00% [2],[3],[19] 11.00% [2],[3],[19] 11.00% [2],[3],[19]  
Principal   $ 994,000 [7],[9],[11],[13],[17]           $ 852,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Dialyze Holdings, LLC, Health Care Equipment, First Lien Term Loan 6                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[13],[17]   308,000                  
Investments at fair value [7],[9],[13],[17]   $ 71,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[13],[17]   11.00% 11.00% 11.00% 11.00% 11.00% 11.00%        
Principal [7],[9],[11],[13],[17]   $ 357,000                  
Investment, Identifier [Axis]: Dialyze Holdings, LLC, Health Care Equipment, First Lien Term Loan 7                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[13],[17]   1,745,000                  
Investments at fair value [7],[9],[13],[17]   $ 389,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[13],[17]   11.00% 11.00% 11.00% 11.00% 11.00% 11.00%        
Principal [7],[9],[11],[13],[17]   $ 1,943,000                  
Investment, Identifier [Axis]: Dialyze Holdings, LLC, Health Care Equipment, First Lien Term Loan 8                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[13],[17]   429,000                  
Investments at fair value [7],[9],[13],[17]   $ 89,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[13],[17]   11.00% 11.00% 11.00% 11.00% 11.00% 11.00%        
Principal [7],[9],[11],[13],[17]   $ 446,000                  
Investment, Identifier [Axis]: Dialyze Holdings, LLC, Health Care Equipment, First Lien Term Loan 9                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[8],[9],[13],[17]   0                  
Investments at fair value [7],[8],[9],[13],[17]   $ (985,000)                  
Investment, basis spread, variable rate (as a percent) [7],[8],[9],[13],[17]   11.00% 11.00% 11.00% 11.00% 11.00% 11.00%        
Principal [7],[8],[9],[11],[13],[17]   $ 0                  
Investment, Identifier [Axis]: Dialyze Holdings, LLC, Health Care Equipment, Subordinated Debt Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   786,000 [7],[9],[17]           724,000 [2],[3],[18]      
Investments at fair value   $ 0 [7],[9],[17]           $ 375,000 [2],[3],[18]      
Investment, interest rate, paid in kind (as a percent)   10.00% [7],[9],[17] 10.00% [7],[9],[17] 10.00% [7],[9],[17] 10.00% [7],[9],[17] 10.00% [7],[9],[17] 10.00% [7],[9],[17] 10.00% [2],[3],[18] 10.00% [2],[3],[18] 10.00% [2],[3],[18]  
Principal   $ 802,000 [7],[9],[11],[17]           $ 725,000 [2],[3],[6],[18]      
Investment, Identifier [Axis]: Dialyze Holdings, LLC, Health Care Equipment, Subordinated Debt Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   0 [7],[9],[17]           0 [2],[3],[18]      
Investments at fair value   $ 0 [7],[9],[17]           $ 496,000 [2],[3],[18]      
Investment, interest rate, paid in kind (as a percent)   10.00% [7],[9],[17] 10.00% [7],[9],[17] 10.00% [7],[9],[17] 10.00% [7],[9],[17] 10.00% [7],[9],[17] 10.00% [7],[9],[17] 10.00% [2],[3],[18] 10.00% [2],[3],[18] 10.00% [2],[3],[18]  
Principal   $ 1,060,000 [7],[9],[11],[17]           $ 959,000 [2],[3],[6],[18]      
Investment, Identifier [Axis]: Dialyze Holdings, LLC, Health Care Equipment, Subordinated Debt Term Loan 3                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   0 [7],[9],[17]           0 [2],[3],[18]      
Investments at fair value   $ 0 [7],[9],[17]           $ 493,000 [2],[3],[18]      
Investment, interest rate, paid in kind (as a percent)   10.00% [7],[9],[17] 10.00% [7],[9],[17] 10.00% [7],[9],[17] 10.00% [7],[9],[17] 10.00% [7],[9],[17] 10.00% [7],[9],[17] 10.00% [2],[3],[18] 10.00% [2],[3],[18] 10.00% [2],[3],[18]  
Principal   $ 1,053,000 [7],[9],[11],[17]           $ 952,000 [2],[3],[6],[18]      
Investment, Identifier [Axis]: Dialyze Holdings, LLC, Health Care Equipment, Subordinated Debt Term Loan 4                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   0 [7],[9],[17]           0 [2],[3],[18]      
Investments at fair value   $ 0 [7],[9],[17]           $ 869,000 [2],[3],[18]      
Investment, interest rate, paid in kind (as a percent)   10.00% [7],[9],[17] 10.00% [7],[9],[17] 10.00% [7],[9],[17] 10.00% [7],[9],[17] 10.00% [7],[9],[17] 10.00% [7],[9],[17] 10.00% [2],[3],[18] 10.00% [2],[3],[18] 10.00% [2],[3],[18]  
Principal   $ 1,856,000 [7],[9],[11],[17]           $ 1,679,000 [2],[3],[6],[18]      
Investment, Identifier [Axis]: Dialyze Holdings, LLC, Health Care Equipment, Warrants                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   1,642,000 [7],[9],[20]           1,642,000 [2],[3]      
Investments at fair value   $ 0 [7],[9],[20]           $ 0 [2],[3]      
Investment owned, balance (in shares) | shares   6,397,254 [7],[9],[20] 6,397,254 [7],[9],[20] 6,397,254 [7],[9],[20] 6,397,254 [7],[9],[20] 6,397,254 [7],[9],[20] 6,397,254 [7],[9],[20] 6,397,254 [2],[3] 6,397,254 [2],[3] 6,397,254 [2],[3]  
Investment, Identifier [Axis]: Digital.AI Software Holdings, Inc., Application Software, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   $ 806,000 [7],[8],[9],[13]           $ 0 [1],[2],[3],[19]      
Investments at fair value   $ 697,000 [7],[8],[9],[13]           $ (36,000) [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   6.00% [7],[8],[9],[13] 6.00% [7],[8],[9],[13] 6.00% [7],[8],[9],[13] 6.00% [7],[8],[9],[13] 6.00% [7],[8],[9],[13] 6.00% [7],[8],[9],[13] 6.00% [1],[2],[3],[19] 6.00% [1],[2],[3],[19] 6.00% [1],[2],[3],[19]  
Investment interest rate [7],[8],[9],[10],[13]   9.99% 9.99% 9.99% 9.99% 9.99% 9.99%        
Principal   $ 806,000 [7],[8],[9],[11],[13]           $ 0 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: Digital.AI Software Holdings, Inc., Application Software, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   53,889,000 [7],[9],[13]           54,449,000 [2],[3],[19]      
Investments at fair value   $ 52,914,000 [7],[9],[13]           $ 54,127,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [2],[3],[19] 6.00% [2],[3],[19] 6.00% [2],[3],[19]  
Investment interest rate   10.00% [7],[9],[10],[13] 10.00% [7],[9],[10],[13] 10.00% [7],[9],[10],[13] 10.00% [7],[9],[10],[13] 10.00% [7],[9],[10],[13] 10.00% [7],[9],[10],[13] 10.60% [2],[3],[5],[19] 10.60% [2],[3],[5],[19] 10.60% [2],[3],[5],[19]  
Principal   $ 53,890,000 [7],[9],[11],[13]           $ 54,454,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Digital.AI Software Holdings, Inc., Application Software, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   2,889,000 [7],[9],[13]           2,913,000 [2],[3],[19]      
Investments at fair value   $ 2,856,000 [7],[9],[13]           $ 2,921,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [2],[3],[19] 6.00% [2],[3],[19] 6.00% [2],[3],[19]  
Investment interest rate   10.00% [7],[9],[10],[13] 10.00% [7],[9],[10],[13] 10.00% [7],[9],[10],[13] 10.00% [7],[9],[10],[13] 10.00% [7],[9],[10],[13] 10.00% [7],[9],[10],[13] 10.60% [2],[3],[5],[19] 10.60% [2],[3],[5],[19] 10.60% [2],[3],[5],[19]  
Principal   $ 2,908,000 [7],[9],[11],[13]           $ 2,939,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: DirecTV Financing, LLC, Cable & Satellite, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [9],[13]   13,260,000                  
Investments at fair value [9],[13]   $ 13,238,000                  
Investment, basis spread, variable rate (as a percent) [9],[13]   5.50% 5.50% 5.50% 5.50% 5.50% 5.50%        
Investment interest rate [9],[10],[13]   9.81% 9.81% 9.81% 9.81% 9.81% 9.81%        
Principal [9],[11],[13]   $ 13,508,000                  
Investment, Identifier [Axis]: DirecTV Financing, LLC, Cable & Satellite, First Rate Bond                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [9]   14,203,000                  
Investments at fair value [9]   $ 14,193,000                  
Investment interest rate [9],[10]   10.00% 10.00% 10.00% 10.00% 10.00% 10.00%        
Principal [9],[11]   $ 14,203,000                  
Investment, Identifier [Axis]: Dominion Diagnostics, LLC, Health Care Services, Common Stock                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00%  
Investment owned, at cost   $ 15,222,000 [7],[20],[26],[27]           $ 15,222,000 [3],[28],[29]      
Investments at fair value   $ 0 [7],[20],[26],[27]           $ 0 [3],[28],[29]     2,711,000
Investment owned, balance (in shares) | shares   30,031 [7],[20],[26],[27] 30,031 [7],[20],[26],[27] 30,031 [7],[20],[26],[27] 30,031 [7],[20],[26],[27] 30,031 [7],[20],[26],[27] 30,031 [7],[20],[26],[27] 30,031 [3],[28],[29] 30,031 [3],[28],[29] 30,031 [3],[28],[29]  
Investment, Identifier [Axis]: Dominion Diagnostics, LLC, Health Care Services, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   0.00% 0.00% 0.00% 0.00% 0.00% 0.00%        
Investment owned, at cost [3],[19],[28],[29]               $ 5,574,000      
Investments at fair value   $ 0           $ 4,546,000 [3],[19],[28],[29]      
Investment, basis spread, variable rate (as a percent)   5.00% 5.00% 5.00% 5.00% 5.00% 5.00% 5.00% [3],[19],[28],[29] 5.00% [3],[19],[28],[29] 5.00% [3],[19],[28],[29]  
Investment interest rate [3],[5],[19],[28],[29]               9.75% 9.75% 9.75%  
Principal   $ 0           $ 5,574,000 [3],[6],[19],[28],[29]      
Investment, Identifier [Axis]: Dominion Diagnostics, LLC, Health Care Services, First Lien Revolver 3                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)               0.30% 0.30% 0.30%  
Investments at fair value               $ 4,546,000     5,574,000
Investment, basis spread, variable rate (as a percent)               5.00% 5.00% 5.00%  
Investment interest rate               9.75% 9.75% 9.75%  
Principal               $ 5,574,000      
Investment, Identifier [Axis]: Dominion Diagnostics, LLC, Health Care Services, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.80% 0.80% 0.80%  
Investment owned, at cost [3],[19],[28],[29]               $ 13,928,000      
Investments at fair value   $ 0           $ 11,360,000 [3],[19],[28],[29]     14,068,000
Investment, basis spread, variable rate (as a percent)   5.00% 5.00% 5.00% 5.00% 5.00% 5.00% 5.00% [3],[19],[28],[29] 5.00% [3],[19],[28],[29] 5.00% [3],[19],[28],[29]  
Investment interest rate [3],[5],[19],[28],[29]               9.74% 9.74% 9.74%  
Principal   $ 0           $ 13,928,000 [3],[6],[19],[28],[29]      
Investment, Identifier [Axis]: Dominion Diagnostics, LLC, Health Care Services, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   0.00% 0.00% 0.00% 0.00% 0.00% 0.00% (0.10%) (0.10%) (0.10%)  
Investment owned, at cost [1],[3],[19],[28],[29]               $ 0      
Investments at fair value   $ 0           $ (1,028,000) [1],[3],[19],[28],[29]     2,090,000
Investment, basis spread, variable rate (as a percent)   5.00% 5.00% 5.00% 5.00% 5.00% 5.00% 5.00% [1],[3],[19],[28],[29] 5.00% [1],[3],[19],[28],[29] 5.00% [1],[3],[19],[28],[29]  
Principal   $ 0           $ 0 [1],[3],[6],[19],[28],[29]      
Investment, Identifier [Axis]: Dominion Diagnostics, LLC, Health Care Services, First Lien Term Loan 3                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   0.40% 0.40% 0.40% 0.40% 0.40% 0.40%        
Investment owned, at cost [7],[13],[17],[26],[27]   $ 4,968,000                  
Investments at fair value   $ 5,351,000 [7],[13],[17],[26],[27]           0      
Investment, basis spread, variable rate (as a percent) [7],[13],[17],[26],[27]   5.00% 5.00% 5.00% 5.00% 5.00% 5.00%        
Principal [7],[11],[13],[17],[26],[27]   $ 6,967,000                  
Investment, Identifier [Axis]: Dominion Diagnostics, LLC, Health Care Services, First Lien Term Loan 4                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   0.00% 0.00% 0.00% 0.00% 0.00% 0.00%        
Investment owned, at cost [7],[13],[17],[26],[27]   $ 13,151,000                  
Investments at fair value   $ 0 [7],[13],[17],[26],[27]           0      
Investment, basis spread, variable rate (as a percent) [7],[13],[17],[26],[27]   6.50% 6.50% 6.50% 6.50% 6.50% 6.50%        
Principal [7],[11],[13],[17],[26],[27]   $ 12,779,000                  
Investment, Identifier [Axis]: Draken International, LLC, Aerospace & Defense, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[12],[13]   20,604,000                  
Investments at fair value [7],[9],[12],[13]   $ 20,762,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[12],[13]   5.50% 5.50% 5.50% 5.50% 5.50% 5.50%        
Investment interest rate [7],[9],[10],[12],[13]   9.47% 9.47% 9.47% 9.47% 9.47% 9.47%        
Principal | £ [7],[9],[11],[12],[13]       £ 15,711              
Investment, Identifier [Axis]: Draken International, LLC, Aerospace & Defense, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[12],[13]   $ 4,898,000                  
Investments at fair value [7],[9],[12],[13]   $ 4,902,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[12],[13]   5.50% 5.50% 5.50% 5.50% 5.50% 5.50%        
Investment interest rate [7],[9],[10],[12],[13]   9.69% 9.69% 9.69% 9.69% 9.69% 9.69%        
Principal [7],[9],[11],[12],[13]   $ 4,992,000                  
Investment, Identifier [Axis]: Draken International, LLC, Aerospace & Defense, First Lien Term Loan 3                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[8],[9],[12],[13]   (56,000)                  
Investments at fair value [7],[8],[9],[12],[13]   $ (53,000)                  
Investment, basis spread, variable rate (as a percent) [7],[8],[9],[12],[13]   5.50% 5.50% 5.50% 5.50% 5.50% 5.50%        
Principal [7],[8],[9],[11],[12],[13]   $ 0                  
Investment, Identifier [Axis]: EMPIRE BIDCO AB, Life Sciences Tools & Services, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[12],[13]   8,561,000                  
Investments at fair value [7],[9],[12],[13]   $ 8,535,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[12],[13]   5.25% 5.25% 5.25% 5.25% 5.25% 5.25%        
Investment interest rate [7],[9],[10],[12],[13]   7.38% 7.38% 7.38% 7.38% 7.38% 7.38%        
Principal | kr [7],[9],[11],[12],[13]         kr 81,913            
Investment, Identifier [Axis]: EMPIRE BIDCO AB, Life Sciences Tools & Services, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[12],[13]   $ 8,399,000                  
Investments at fair value [7],[9],[12],[13]   $ 8,378,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[12],[13]   5.25% 5.25% 5.25% 5.25% 5.25% 5.25%        
Investment interest rate [7],[9],[10],[12],[13]   9.22% 9.22% 9.22% 9.22% 9.22% 9.22%        
Principal | £ [7],[9],[11],[12],[13]       £ 6,350              
Investment, Identifier [Axis]: EMPIRE BIDCO AB, Life Sciences Tools & Services, First Lien Term Loan 3                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[8],[9],[12],[13]   $ (106,000)                  
Investments at fair value [7],[8],[9],[12],[13]   $ (106,000)                  
Investment, basis spread, variable rate (as a percent) [7],[8],[9],[12],[13]   5.25% 5.25% 5.25% 5.25% 5.25% 5.25%        
Principal [7],[8],[9],[11],[12],[13]   $ 0                  
Investment, Identifier [Axis]: EOS Fitness Opco Holdings, LLC, Leisure Facilities, Common Stock                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3]               0      
Investments at fair value [2],[3]               $ 0      
Investment owned, balance (in shares) | shares [2],[3]               12,500 12,500 12,500  
Investment, Identifier [Axis]: EOS Fitness Opco Holdings, LLC, Leisure Facilities, Preferred Equity                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3]               $ 488,000      
Investments at fair value [2],[3]               $ 1,345,000      
Investment owned, balance (in shares) | shares [2],[3]               488 488 488  
Investment, Identifier [Axis]: Eagleview Technology Corporation, Application Software, Second Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[19]               $ 8,884,000      
Investments at fair value [2],[3],[19]               $ 8,121,000      
Investment, basis spread, variable rate (as a percent) [2],[3],[19]               7.50% 7.50% 7.50%  
Investment interest rate [2],[3],[5],[19]               12.25% 12.25% 12.25%  
Principal [2],[3],[6],[19]               $ 8,974,000      
Investment, Identifier [Axis]: Engineering Research and Consulting LLC, Construction & Engineering, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   11,643,000 [9],[13]           11,697,000 [2],[3],[19]      
Investments at fair value   $ 11,518,000 [9],[13]           $ 11,858,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.00% [9],[13] 5.00% [9],[13] 5.00% [9],[13] 5.00% [9],[13] 5.00% [9],[13] 5.00% [9],[13] 5.00% [2],[3],[19] 5.00% [2],[3],[19] 5.00% [2],[3],[19]  
Investment interest rate   9.29% [9],[10],[13] 9.29% [9],[10],[13] 9.29% [9],[10],[13] 9.29% [9],[10],[13] 9.29% [9],[10],[13] 9.29% [9],[10],[13] 10.06% [2],[3],[5],[19] 10.06% [2],[3],[5],[19] 10.06% [2],[3],[5],[19]  
Principal   $ 11,844,000 [9],[11],[13]           $ 11,933,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Enverus Holdings, Inc., Application Software, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   60,000 [7],[8],[9],[13]           96,000 [1],[2],[3],[19]      
Investments at fair value   $ 81,000 [7],[8],[9],[13]           $ 121,000 [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.50% [7],[8],[9],[13] 5.50% [7],[8],[9],[13] 5.50% [7],[8],[9],[13] 5.50% [7],[8],[9],[13] 5.50% [7],[8],[9],[13] 5.50% [7],[8],[9],[13] 5.50% [1],[2],[3],[19] 5.50% [1],[2],[3],[19] 5.50% [1],[2],[3],[19]  
Investment interest rate   9.64% [7],[8],[9],[10],[13] 9.64% [7],[8],[9],[10],[13] 9.64% [7],[8],[9],[10],[13] 9.64% [7],[8],[9],[10],[13] 9.64% [7],[8],[9],[10],[13] 9.64% [7],[8],[9],[10],[13] 10.35% [1],[2],[3],[5],[19] 10.35% [1],[2],[3],[5],[19] 10.35% [1],[2],[3],[5],[19]  
Principal   $ 81,000 [7],[8],[9],[11],[13]           $ 121,000 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: Enverus Holdings, Inc., Application Software, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   25,034,000 [7],[9],[13]           24,369,000 [2],[3],[19]      
Investments at fair value   $ 25,401,000 [7],[9],[13]           $ 24,741,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.50% [7],[9],[13] 5.50% [7],[9],[13] 5.50% [7],[9],[13] 5.50% [7],[9],[13] 5.50% [7],[9],[13] 5.50% [7],[9],[13] 5.50% [2],[3],[19] 5.50% [2],[3],[19] 5.50% [2],[3],[19]  
Investment interest rate   9.82% [7],[9],[10],[13] 9.82% [7],[9],[10],[13] 9.82% [7],[9],[10],[13] 9.82% [7],[9],[10],[13] 9.82% [7],[9],[10],[13] 9.82% [7],[9],[10],[13] 10.35% [2],[3],[5],[19] 10.35% [2],[3],[5],[19] 10.35% [2],[3],[5],[19]  
Principal   $ 25,401,000 [7],[9],[11],[13]           $ 24,741,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Enverus Holdings, Inc., Application Software, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   (5,000) [7],[8],[9],[13]           (16,000) [1],[2],[3],[19]      
Investments at fair value   $ 0 [7],[8],[9],[13]           $ 0 [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.50% [7],[8],[9],[13] 5.50% [7],[8],[9],[13] 5.50% [7],[8],[9],[13] 5.50% [7],[8],[9],[13] 5.50% [7],[8],[9],[13] 5.50% [7],[8],[9],[13] 5.50% [1],[2],[3],[19] 5.50% [1],[2],[3],[19] 5.50% [1],[2],[3],[19]  
Principal   $ 0 [7],[8],[9],[11],[13]           $ 0 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: Establishment Labs Holdings Inc., Health Care Technology, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   1,824,000 [7],[9],[12]           1,817,000 [2],[3],[15]      
Investments at fair value   $ 1,845,000 [7],[9],[12]           $ 1,834,000 [2],[3],[15]      
Investment interest rate   9.00% [7],[9],[10],[12] 9.00% [7],[9],[10],[12] 9.00% [7],[9],[10],[12] 9.00% [7],[9],[10],[12] 9.00% [7],[9],[10],[12] 9.00% [7],[9],[10],[12] 9.00% [2],[3],[5],[15] 9.00% [2],[3],[5],[15] 9.00% [2],[3],[5],[15]  
Principal   $ 1,834,000 [7],[9],[11],[12]           $ 1,834,000 [2],[3],[6],[15]      
Investment, Identifier [Axis]: Establishment Labs Holdings Inc., Health Care Technology, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   1,681,000 [7],[9],[12]           1,000 [1],[2],[3],[15]      
Investments at fair value   $ 1,726,000 [7],[9],[12]           $ 0 [1],[2],[3],[15]      
Investment interest rate   10.00% [7],[9],[10],[12] 10.00% [7],[9],[10],[12] 10.00% [7],[9],[10],[12] 10.00% [7],[9],[10],[12] 10.00% [7],[9],[10],[12] 10.00% [7],[9],[10],[12] 9.00% [1],[2],[3],[5],[15] 9.00% [1],[2],[3],[5],[15] 9.00% [1],[2],[3],[5],[15]  
Principal   $ 1,692,000 [7],[9],[11],[12]           $ 0 [1],[2],[3],[6],[15]      
Investment, Identifier [Axis]: Establishment Labs Holdings Inc., Health Care Technology, First Lien Term Loan 3                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   1,658,000 [7],[9],[12]           1,000 [1],[2],[3],[15]      
Investments at fair value   $ 1,726,000 [7],[9],[12]           $ 0 [1],[2],[3],[15]      
Investment interest rate   10.00% [7],[9],[10],[12] 10.00% [7],[9],[10],[12] 10.00% [7],[9],[10],[12] 10.00% [7],[9],[10],[12] 10.00% [7],[9],[10],[12] 10.00% [7],[9],[10],[12] 9.00% [1],[2],[3],[5],[15] 9.00% [1],[2],[3],[5],[15] 9.00% [1],[2],[3],[5],[15]  
Principal   $ 1,692,000 [7],[9],[11],[12]           $ 0 [1],[2],[3],[6],[15]      
Investment, Identifier [Axis]: Establishment Labs Holdings Inc., Health Care Technology, First Lien Term Loan 4                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   11,405,000 [7],[9],[12]           11,374,000 [2],[3],[15]      
Investments at fair value   $ 11,518,000 [7],[9],[12]           $ 11,454,000 [2],[3],[15]      
Investment interest rate   9.00% [7],[9],[10],[12] 9.00% [7],[9],[10],[12] 9.00% [7],[9],[10],[12] 9.00% [7],[9],[10],[12] 9.00% [7],[9],[10],[12] 9.00% [7],[9],[10],[12] 9.00% [2],[3],[5],[15] 9.00% [2],[3],[5],[15] 9.00% [2],[3],[5],[15]  
Principal   $ 11,454,000 [7],[9],[11],[12]           $ 11,454,000 [2],[3],[6],[15]      
Investment, Identifier [Axis]: Everbridge, Inc., Application Software, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   (8,000) [7],[8],[9],[13]           (10,000) [1],[2],[3],[19]      
Investments at fair value   $ 0 [7],[8],[9],[13]           $ (9,000) [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [1],[2],[3],[19] 5.00% [1],[2],[3],[19] 5.00% [1],[2],[3],[19]  
Principal   $ 0 [7],[8],[9],[11],[13]           $ 0 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: Everbridge, Inc., Application Software, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   19,782,000 [7],[9],[13]           19,914,000 [2],[3],[19]      
Investments at fair value   $ 19,864,000 [7],[9],[13]           $ 19,922,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.00% [7],[9],[13] 5.00% [7],[9],[13] 5.00% [7],[9],[13] 5.00% [7],[9],[13] 5.00% [7],[9],[13] 5.00% [7],[9],[13] 5.00% [2],[3],[19] 5.00% [2],[3],[19] 5.00% [2],[3],[19]  
Investment interest rate   9.29% [7],[9],[10],[13] 9.29% [7],[9],[10],[13] 9.29% [7],[9],[10],[13] 9.29% [7],[9],[10],[13] 9.29% [7],[9],[10],[13] 9.29% [7],[9],[10],[13] 10.33% [2],[3],[5],[19] 10.33% [2],[3],[5],[19] 10.33% [2],[3],[5],[19]  
Principal   $ 19,864,000 [7],[9],[11],[13]           $ 20,014,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Everbridge, Inc., Application Software, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   1,932,000 [7],[8],[9],[13]           1,944,000 [1],[2],[3],[19]      
Investments at fair value   $ 1,946,000 [7],[8],[9],[13]           $ 1,950,000 [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [1],[2],[3],[19] 5.00% [1],[2],[3],[19] 5.00% [1],[2],[3],[19]  
Investment interest rate   9.29% [7],[8],[9],[10],[13] 9.29% [7],[8],[9],[10],[13] 9.29% [7],[8],[9],[10],[13] 9.29% [7],[8],[9],[10],[13] 9.29% [7],[8],[9],[10],[13] 9.29% [7],[8],[9],[10],[13] 10.30% [1],[2],[3],[5],[19] 10.30% [1],[2],[3],[5],[19] 10.30% [1],[2],[3],[5],[19]  
Principal   $ 1,946,000 [7],[8],[9],[11],[13]           $ 1,961,000 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: Evergreen IX Borrower 2023, LLC, Application Software, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   (27,000) [7],[8],[9],[13]           (34,000) [1],[2],[3],[19]      
Investments at fair value   $ 0 [7],[8],[9],[13]           $ (14,000) [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   4.75% [7],[8],[9],[13] 4.75% [7],[8],[9],[13] 4.75% [7],[8],[9],[13] 4.75% [7],[8],[9],[13] 4.75% [7],[8],[9],[13] 4.75% [7],[8],[9],[13] 4.75% [1],[2],[3],[19] 4.75% [1],[2],[3],[19] 4.75% [1],[2],[3],[19]  
Principal   $ 0 [7],[8],[9],[11],[13]           $ 0 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: Evergreen IX Borrower 2023, LLC, Application Software, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   14,220,000 [7],[9],[13]           14,312,000 [2],[3],[19]      
Investments at fair value   $ 14,478,000 [7],[9],[13]           $ 14,501,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   4.75% [7],[9],[13] 4.75% [7],[9],[13] 4.75% [7],[9],[13] 4.75% [7],[9],[13] 4.75% [7],[9],[13] 4.75% [7],[9],[13] 4.75% [2],[3],[19] 4.75% [2],[3],[19] 4.75% [2],[3],[19]  
Investment interest rate   8.75% [7],[9],[10],[13] 8.75% [7],[9],[10],[13] 8.75% [7],[9],[10],[13] 8.75% [7],[9],[10],[13] 8.75% [7],[9],[10],[13] 8.75% [7],[9],[10],[13] 9.35% [2],[3],[5],[19] 9.35% [2],[3],[5],[19] 9.35% [2],[3],[5],[19]  
Principal   $ 14,478,000 [7],[9],[11],[13]           $ 14,625,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Evergreen IX Borrower 2023, LLC, Application Software, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   3,626,000 [7],[9],[13]           3,656,000 [2],[3],[19]      
Investments at fair value   $ 3,656,000 [7],[9],[13]           $ 3,661,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   4.75% [7],[9],[13] 4.75% [7],[9],[13] 4.75% [7],[9],[13] 4.75% [7],[9],[13] 4.75% [7],[9],[13] 4.75% [7],[9],[13] 4.75% [2],[3],[19] 4.75% [2],[3],[19] 4.75% [2],[3],[19]  
Investment interest rate   8.75% [7],[9],[10],[13] 8.75% [7],[9],[10],[13] 8.75% [7],[9],[10],[13] 8.75% [7],[9],[10],[13] 8.75% [7],[9],[10],[13] 8.75% [7],[9],[10],[13] 9.35% [2],[3],[5],[19] 9.35% [2],[3],[5],[19] 9.35% [2],[3],[5],[19]  
Principal   $ 3,656,000 [7],[9],[11],[13]           $ 3,692,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Eyesouth Eye Care Holdco LLC, Health Care Services, Common Stock                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   1,206,000 [7],[9],[20]           1,206,000 [2],[3],[30]      
Investments at fair value   $ 1,388,000 [7],[9],[20]           $ 1,131,000 [2],[3],[30]      
Investment owned, balance (in shares) | shares   1,206 [7],[9],[20] 1,206 [7],[9],[20] 1,206 [7],[9],[20] 1,206 [7],[9],[20] 1,206 [7],[9],[20] 1,206 [7],[9],[20] 1,206 [2],[3],[30] 1,206 [2],[3],[30] 1,206 [2],[3],[30]  
Investment, Identifier [Axis]: Eyesouth Eye Care Holdco LLC, Health Care Services, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   $ 4,261,000 [7],[9],[13]           $ 4,289,000 [2],[3],[19]      
Investments at fair value   $ 4,268,000 [7],[9],[13]           $ 4,285,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.50% [7],[9],[13] 5.50% [7],[9],[13] 5.50% [7],[9],[13] 5.50% [7],[9],[13] 5.50% [7],[9],[13] 5.50% [7],[9],[13] 5.50% [2],[3],[19] 5.50% [2],[3],[19] 5.50% [2],[3],[19]  
Investment interest rate   9.88% [7],[9],[10],[13] 9.88% [7],[9],[10],[13] 9.88% [7],[9],[10],[13] 9.88% [7],[9],[10],[13] 9.88% [7],[9],[10],[13] 9.88% [7],[9],[10],[13] 10.80% [2],[3],[5],[19] 10.80% [2],[3],[5],[19] 10.80% [2],[3],[5],[19]  
Principal   $ 4,324,000 [7],[9],[11],[13]           $ 4,368,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Eyesouth Eye Care Holdco LLC, Health Care Services, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   3,682,000 [7],[8],[9],[13]           (66,000) [1],[2],[3],[19]      
Investments at fair value   $ 3,673,000 [7],[8],[9],[13]           $ (125,000) [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.50% [7],[8],[9],[13] 5.50% [7],[8],[9],[13] 5.50% [7],[8],[9],[13] 5.50% [7],[8],[9],[13] 5.50% [7],[8],[9],[13] 5.50% [7],[8],[9],[13] 5.50% [1],[2],[3],[19] 5.50% [1],[2],[3],[19] 5.50% [1],[2],[3],[19]  
Investment interest rate [7],[8],[9],[10],[13]   9.76% 9.76% 9.76% 9.76% 9.76% 9.76%        
Principal   $ 3,758,000 [7],[8],[9],[11],[13]           $ 0 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: F&M Buyer LLC, Systems Software, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[8],[9],[13]   (10,000)                  
Investments at fair value [7],[8],[9],[13]   $ (10,000)                  
Investment, basis spread, variable rate (as a percent) [7],[8],[9],[13]   4.50% 4.50% 4.50% 4.50% 4.50% 4.50%        
Principal [7],[8],[9],[11],[13]   $ 0                  
Investment, Identifier [Axis]: F&M Buyer LLC, Systems Software, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[13]   6,636,000                  
Investments at fair value [7],[9],[13]   $ 6,636,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[13]   4.50% 4.50% 4.50% 4.50% 4.50% 4.50%        
Investment interest rate [7],[9],[10],[13]   8.50% 8.50% 8.50% 8.50% 8.50% 8.50%        
Principal [7],[9],[11],[13]   $ 6,703,000                  
Investment, Identifier [Axis]: F&M Buyer LLC, Systems Software, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[8],[9],[13]   (11,000)                  
Investments at fair value [7],[8],[9],[13]   $ (11,000)                  
Investment, basis spread, variable rate (as a percent) [7],[8],[9],[13]   4.50% 4.50% 4.50% 4.50% 4.50% 4.50%        
Principal [7],[8],[9],[11],[13]   $ 0                  
Investment, Identifier [Axis]: Fairbridge Strategic Capital Funding LLC, Real Estate Operating Companies, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   28,385,000 [7],[9]           48,920,000 [2],[3]      
Investments at fair value   $ 27,533,000 [7],[9]           $ 48,920,000 [2],[3]      
Investment interest rate   9.00% [7],[9],[10] 9.00% [7],[9],[10] 9.00% [7],[9],[10] 9.00% [7],[9],[10] 9.00% [7],[9],[10] 9.00% [7],[9],[10] 9.00% [2],[3],[5] 9.00% [2],[3],[5] 9.00% [2],[3],[5]  
Principal   $ 28,385,000 [7],[9],[11]           $ 48,920,000 [2],[3],[6]      
Investment, Identifier [Axis]: Fairbridge Strategic Capital Funding LLC, Real Estate Operating Companies, Warrants                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   0 [7],[9],[12],[20]           0 [2],[3],[15],[31]      
Investments at fair value   $ 0 [7],[9],[12],[20]           $ 4,000 [2],[3],[15],[31]      
Investment owned, balance (in shares) | shares   3,750 [7],[9],[12],[20],[25] 3,750 [7],[9],[12],[20],[25] 3,750 [7],[9],[12],[20],[25] 3,750 [7],[9],[12],[20],[25] 3,750 [7],[9],[12],[20],[25] 3,750 [7],[9],[12],[20],[25] 3,750 [2],[3],[15],[31] 3,750 [2],[3],[15],[31] 3,750 [2],[3],[15],[31]  
Investment, Identifier [Axis]: Finastra USA, Inc., Application Software, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [1],[2],[3],[15],[19]               $ 544,000      
Investments at fair value [1],[2],[3],[15],[19]               $ 547,000      
Investment, basis spread, variable rate (as a percent) [1],[2],[3],[15],[19]               7.25% 7.25% 7.25%  
Investment interest rate [1],[2],[3],[5],[15],[19]               12.18% 12.18% 12.18%  
Principal [1],[2],[3],[6],[15],[19]               $ 564,000      
Investment, Identifier [Axis]: Finastra USA, Inc., Application Software, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   $ 3,197,000 [7],[9],[12],[13]           11,491,000 [2],[3],[15],[19]      
Investments at fair value   $ 3,240,000 [7],[9],[12],[13]           $ 11,521,000 [2],[3],[15],[19]      
Investment, basis spread, variable rate (as a percent)   7.25% [7],[9],[12],[13] 7.25% [7],[9],[12],[13] 7.25% [7],[9],[12],[13] 7.25% [7],[9],[12],[13] 7.25% [7],[9],[12],[13] 7.25% [7],[9],[12],[13] 7.25% [2],[3],[15],[19] 7.25% [2],[3],[15],[19] 7.25% [2],[3],[15],[19]  
Investment interest rate   11.29% [7],[9],[10],[12],[13] 11.29% [7],[9],[10],[12],[13] 11.29% [7],[9],[10],[12],[13] 11.29% [7],[9],[10],[12],[13] 11.29% [7],[9],[10],[12],[13] 11.29% [7],[9],[10],[12],[13] 12.18% [2],[3],[5],[15],[19] 12.18% [2],[3],[5],[15],[19] 12.18% [2],[3],[5],[15],[19]  
Principal   $ 3,240,000 [7],[9],[11],[12],[13]           $ 11,683,000 [2],[3],[6],[15],[19]      
Investment, Identifier [Axis]: Finthrive Software Intermediate Holdings, Inc., Health Care Technology, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[19]               3,594,000      
Investments at fair value [2],[3],[19]               $ 3,862,000      
Investment, basis spread, variable rate (as a percent) [2],[3],[19]               4.00% 4.00% 4.00%  
Investment interest rate [2],[3],[5],[19]               8.96% 8.96% 8.96%  
Principal [2],[3],[6],[19]               $ 4,291,000      
Investment, Identifier [Axis]: Finthrive Software Intermediate Holdings, Inc., Health Care Technology, Second Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[18],[19]               28,328,000      
Investments at fair value [2],[3],[18],[19]               $ 23,616,000      
Investment, basis spread, variable rate (as a percent) [2],[3],[18],[19]               6.75% 6.75% 6.75%  
Principal [2],[3],[6],[18],[19]               $ 31,074,000      
Investment, Identifier [Axis]: First Star Speir Aviation Limited, Airlines, Equity Interest                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)               0.00% 0.00% 0.00%  
Investments at fair value               $ 0     0
Investment owned, ownership (as a percent)               100.00% 100.00% 100.00%  
Investment, Identifier [Axis]: Fortress Biotech, Inc., Biotechnology, Warrants                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   427,000 [7],[9],[12],[20]           $ 427,000 [2],[3],[15]      
Investments at fair value   $ 44,000 [7],[9],[12],[20]           $ 13,000 [2],[3],[15]      
Investment owned, balance (in shares) | shares   31,246 [7],[9],[12],[20] 31,246 [7],[9],[12],[20] 31,246 [7],[9],[12],[20] 31,246 [7],[9],[12],[20] 31,246 [7],[9],[12],[20] 31,246 [7],[9],[12],[20] 27,801 [2],[3],[15] 27,801 [2],[3],[15] 27,801 [2],[3],[15]  
Investment, Identifier [Axis]: GLICK JV Notes                      
Schedule of Investments [Line Items]                      
Investment, basis spread, variable rate (as a percent)   4.50% 4.50% 4.50% 4.50% 4.50% 4.50%        
Investment, Identifier [Axis]: Galileo Parent, Inc., Aerospace & Defense, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   $ 3,965,000 [7],[8],[9],[13]           $ 2,452,000 [1],[2],[3],[19]      
Investments at fair value   $ 3,955,000 [7],[8],[9],[13]           $ 2,536,000 [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.75% [7],[8],[9],[13] 5.75% [7],[8],[9],[13] 5.75% [7],[8],[9],[13] 5.75% [7],[8],[9],[13] 5.75% [7],[8],[9],[13] 5.75% [7],[8],[9],[13] 7.25% [1],[2],[3],[19] 7.25% [1],[2],[3],[19] 7.25% [1],[2],[3],[19]  
Investment interest rate   9.75% [7],[8],[9],[10],[13] 9.75% [7],[8],[9],[10],[13] 9.75% [7],[8],[9],[10],[13] 9.75% [7],[8],[9],[10],[13] 9.75% [7],[8],[9],[10],[13] 9.75% [7],[8],[9],[10],[13] 11.85% [1],[2],[3],[5],[19] 11.85% [1],[2],[3],[5],[19] 11.85% [1],[2],[3],[5],[19]  
Principal   $ 3,990,000 [7],[8],[9],[11],[13]           $ 2,536,000 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: Galileo Parent, Inc., Aerospace & Defense, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   37,796,000 [7],[9],[13]           22,996,000 [2],[3],[19]      
Investments at fair value   $ 38,062,000 [7],[9],[13]           $ 23,536,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.75% [7],[9],[13] 5.75% [7],[9],[13] 5.75% [7],[9],[13] 5.75% [7],[9],[13] 5.75% [7],[9],[13] 5.75% [7],[9],[13] 7.25% [2],[3],[19] 7.25% [2],[3],[19] 7.25% [2],[3],[19]  
Investment interest rate   9.75% [7],[9],[10],[13] 9.75% [7],[9],[10],[13] 9.75% [7],[9],[10],[13] 9.75% [7],[9],[10],[13] 9.75% [7],[9],[10],[13] 9.75% [7],[9],[10],[13] 11.85% [2],[3],[5],[19] 11.85% [2],[3],[5],[19] 11.85% [2],[3],[5],[19]  
Principal   $ 38,254,000 [7],[9],[11],[13]           $ 23,536,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Grand River Aseptic Manufacturing, Inc., Health Care Equipment, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[8],[9],[13]   (24,000)                  
Investments at fair value [7],[8],[9],[13]   $ (27,000)                  
Investment, basis spread, variable rate (as a percent) [7],[8],[9],[13]   5.00% 5.00% 5.00% 5.00% 5.00% 5.00%        
Principal [7],[8],[9],[11],[13]   $ 0                  
Investment, Identifier [Axis]: Grand River Aseptic Manufacturing, Inc., Health Care Equipment, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[13]   8,356,000                  
Investments at fair value [7],[9],[13]   $ 8,345,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[13]   5.00% 5.00% 5.00% 5.00% 5.00% 5.00%        
Investment interest rate [7],[9],[10],[13]   9.07% 9.07% 9.07% 9.07% 9.07% 9.07%        
Principal [7],[9],[11],[13]   $ 8,432,000                  
Investment, Identifier [Axis]: Grove Hotel Parcel Owner, LLC, Hotels, Resorts & Cruise Lines, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   (13,000) [7],[8],[9],[13]           (20,000) [1],[2],[3],[19]      
Investments at fair value   $ (47,000) [7],[8],[9],[13]           $ (35,000) [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   8.00% [7],[8],[9],[13] 8.00% [7],[8],[9],[13] 8.00% [7],[8],[9],[13] 8.00% [7],[8],[9],[13] 8.00% [7],[8],[9],[13] 8.00% [7],[8],[9],[13] 8.00% [1],[2],[3],[19] 8.00% [1],[2],[3],[19] 8.00% [1],[2],[3],[19]  
Principal   $ 0 [7],[8],[9],[11],[13]           $ 0 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: Grove Hotel Parcel Owner, LLC, Hotels, Resorts & Cruise Lines, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   3,499,000 [7],[9],[13]           3,485,000 [2],[3],[19]      
Investments at fair value   $ 3,431,000 [7],[9],[13]           $ 3,454,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   8.00% [7],[9],[13] 8.00% [7],[9],[13] 8.00% [7],[9],[13] 8.00% [7],[9],[13] 8.00% [7],[9],[13] 8.00% [7],[9],[13] 8.00% [2],[3],[19] 8.00% [2],[3],[19] 8.00% [2],[3],[19]  
Investment interest rate   12.26% [7],[9],[10],[13] 12.26% [7],[9],[10],[13] 12.26% [7],[9],[10],[13] 12.26% [7],[9],[10],[13] 12.26% [7],[9],[10],[13] 12.26% [7],[9],[10],[13] 12.95% [2],[3],[5],[19] 12.95% [2],[3],[5],[19] 12.95% [2],[3],[5],[19]  
Principal   $ 3,524,000 [7],[9],[11],[13]           $ 3,524,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Grove Hotel Parcel Owner, LLC, Hotels, Resorts & Cruise Lines, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   17,016,000 [7],[9],[13]           17,147,000 [2],[3],[19]      
Investments at fair value   $ 16,639,000 [7],[9],[13]           $ 16,923,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   8.00% [7],[9],[13] 8.00% [7],[9],[13] 8.00% [7],[9],[13] 8.00% [7],[9],[13] 8.00% [7],[9],[13] 8.00% [7],[9],[13] 8.00% [1],[2],[3],[19] 8.00% [1],[2],[3],[19] 8.00% [1],[2],[3],[19]  
Investment interest rate   12.26% [7],[9],[10],[13] 12.26% [7],[9],[10],[13] 12.26% [7],[9],[10],[13] 12.26% [7],[9],[10],[13] 12.26% [7],[9],[10],[13] 12.26% [7],[9],[10],[13] 12.95% [1],[2],[3],[5],[19] 12.95% [1],[2],[3],[5],[19] 12.95% [1],[2],[3],[5],[19]  
Principal   $ 17,092,000 [7],[9],[11],[13]           $ 17,268,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: HAH Group Holding Co LLC, Health Care Services, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [9],[13]   3,032,000                  
Investments at fair value [9],[13]   $ 3,020,000                  
Investment, basis spread, variable rate (as a percent) [9],[13]   5.00% 5.00% 5.00% 5.00% 5.00% 5.00%        
Investment interest rate [9],[10],[13]   9.16% 9.16% 9.16% 9.16% 9.16% 9.16%        
Principal [9],[11],[13]   $ 3,342,000                  
Investment, Identifier [Axis]: HAH Group Holding Co LLC, Health Care Services, Fixed Rate Bond                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [9]   2,230,000                  
Investments at fair value [9]   $ 2,243,000                  
Investment interest rate [9],[10]   9.75% 9.75% 9.75% 9.75% 9.75% 9.75%        
Principal [9],[11]   $ 2,359,000                  
Investment, Identifier [Axis]: HPS Loan Management 10-2016, Multi-Sector Holdings, CLO Notes                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[15],[19]               2,136,000      
Investments at fair value [2],[15],[19]               $ 2,264,000      
Investment, basis spread, variable rate (as a percent) [2],[15],[19]               6.67% 6.67% 6.67%  
Investment interest rate [2],[5],[15],[19]               11.95% 11.95% 11.95%  
Principal [2],[6],[15],[19]               $ 2,250,000      
Investment, Identifier [Axis]: Harbor Purchaser Inc., Education Services, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   8,180,000 [9],[13]           8,205,000 [2],[19]      
Investments at fair value   $ 7,537,000 [9],[13]           $ 8,263,000 [2],[19]      
Investment, basis spread, variable rate (as a percent)   5.25% [9],[13] 5.25% [9],[13] 5.25% [9],[13] 5.25% [9],[13] 5.25% [9],[13] 5.25% [9],[13] 5.25% [2],[19] 5.25% [2],[19] 5.25% [2],[19]  
Investment interest rate   9.51% [9],[10],[13] 9.51% [9],[10],[13] 9.51% [9],[10],[13] 9.51% [9],[10],[13] 9.51% [9],[10],[13] 9.51% [9],[10],[13] 10.20% [2],[5],[19] 10.20% [2],[5],[19] 10.20% [2],[5],[19]  
Principal   $ 8,386,000 [9],[11],[13]           $ 8,473,000 [2],[6],[19]      
Investment, Identifier [Axis]: Harrow, Inc., Pharmaceuticals, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [1],[2],[3],[15],[19]               (40,000)      
Investments at fair value [1],[2],[3],[15],[19]               $ 52,000      
Investment, basis spread, variable rate (as a percent) [1],[2],[3],[15],[19]               6.50% 6.50% 6.50%  
Principal [1],[2],[3],[6],[15],[19]               $ 0      
Investment, Identifier [Axis]: Harrow, Inc., Pharmaceuticals, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[15],[19]               1,413,000      
Investments at fair value [2],[3],[15],[19]               $ 1,454,000      
Investment, basis spread, variable rate (as a percent) [2],[3],[15],[19]               6.50% 6.50% 6.50%  
Investment interest rate [2],[3],[5],[15],[19]               11.25% 11.25% 11.25%  
Principal [2],[3],[6],[15],[19]               $ 1,432,000      
Investment, Identifier [Axis]: Harrow, Inc., Pharmaceuticals, First Lien Term Loan 3                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[15],[19]               7,362,000      
Investments at fair value [2],[3],[15],[19]               $ 7,560,000      
Investment, basis spread, variable rate (as a percent) [2],[3],[15],[19]               6.50% 6.50% 6.50%  
Investment interest rate [2],[3],[5],[15],[19]               11.25% 11.25% 11.25%  
Principal [2],[3],[6],[15],[19]               $ 7,448,000      
Investment, Identifier [Axis]: IAMGOLD Corporation, Gold, Second Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   17,698,000 [7],[9],[12],[13]           23,454,000 [2],[3],[15],[19]      
Investments at fair value   $ 18,665,000 [7],[9],[12],[13]           $ 25,054,000 [2],[3],[15],[19]      
Investment, basis spread, variable rate (as a percent)   8.25% [7],[9],[12],[13] 8.25% [7],[9],[12],[13] 8.25% [7],[9],[12],[13] 8.25% [7],[9],[12],[13] 8.25% [7],[9],[12],[13] 8.25% [7],[9],[12],[13] 8.25% [2],[3],[15],[19] 8.25% [2],[3],[15],[19] 8.25% [2],[3],[15],[19]  
Investment interest rate   12.39% [7],[9],[10],[12],[13] 12.39% [7],[9],[10],[12],[13] 12.39% [7],[9],[10],[12],[13] 12.39% [7],[9],[10],[12],[13] 12.39% [7],[9],[10],[12],[13] 12.39% [7],[9],[10],[12],[13] 13.37% [2],[3],[5],[15],[19] 13.37% [2],[3],[5],[15],[19] 13.37% [2],[3],[5],[15],[19]  
Principal   $ 17,981,000 [7],[9],[11],[12],[13]           $ 23,975,000 [2],[3],[6],[15],[19]      
Investment, Identifier [Axis]: INW Manufacturing, LLC, Personal Care Products, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   38,984,000 [9],[13]           40,978,000 [2],[19]      
Investments at fair value   $ 36,284,000 [9],[13]           $ 35,343,000 [2],[19]      
Investment, basis spread, variable rate (as a percent)   5.75% [9],[13] 5.75% [9],[13] 5.75% [9],[13] 5.75% [9],[13] 5.75% [9],[13] 5.75% [9],[13] 5.75% [2],[19] 5.75% [2],[19] 5.75% [2],[19]  
Investment interest rate   10.01% [9],[10],[13] 10.01% [9],[10],[13] 10.01% [9],[10],[13] 10.01% [9],[10],[13] 10.01% [9],[10],[13] 10.01% [9],[10],[13] 10.62% [2],[5],[19] 10.62% [2],[5],[19] 10.62% [2],[5],[19]  
Principal   $ 39,600,000 [9],[11],[13]           $ 42,075,000 [2],[6],[19]      
Investment, Identifier [Axis]: IPC Corp., Application Software, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   36,164,000 [7],[9],[13]           35,643,000 [2],[3],[19]      
Investments at fair value   $ 35,356,000 [7],[9],[13]           $ 35,668,000 [2],[3],[19]      
Investment, interest rate, paid in kind (as a percent) [7],[9],[13]   1.00% 1.00% 1.00% 1.00% 1.00% 1.00%        
Investment, basis spread, variable rate (as a percent)   6.50% [7],[9],[13] 6.50% [7],[9],[13] 6.50% [7],[9],[13] 6.50% [7],[9],[13] 6.50% [7],[9],[13] 6.50% [7],[9],[13] 6.50% [2],[3],[19] 6.50% [2],[3],[19] 6.50% [2],[3],[19]  
Investment interest rate   9.94% [7],[9],[10],[13] 9.94% [7],[9],[10],[13] 9.94% [7],[9],[10],[13] 9.94% [7],[9],[10],[13] 9.94% [7],[9],[10],[13] 9.94% [7],[9],[10],[13] 11.97% [2],[3],[5],[19] 11.97% [2],[3],[5],[19] 11.97% [2],[3],[5],[19]  
Principal   $ 36,356,000 [7],[9],[11],[13]           $ 36,029,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Icefall Parent, Inc., Application Software, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   (14,000) [7],[8],[9],[13]           (18,000) [1],[2],[3],[19]      
Investments at fair value   $ 0 [7],[8],[9],[13]           $ (7,000) [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   4.50% [7],[8],[9],[13] 4.50% [7],[8],[9],[13] 4.50% [7],[8],[9],[13] 4.50% [7],[8],[9],[13] 4.50% [7],[8],[9],[13] 4.50% [7],[8],[9],[13] 6.50% [1],[2],[3],[19] 6.50% [1],[2],[3],[19] 6.50% [1],[2],[3],[19]  
Principal   $ 0 [7],[8],[9],[11],[13]           $ 0 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: Icefall Parent, Inc., Application Software, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   17,876,000 [7],[9],[13]           10,261,000 [2],[3],[19]      
Investments at fair value   $ 18,124,000 [7],[9],[13]           $ 10,372,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   4.50% [7],[9],[13] 4.50% [7],[9],[13] 4.50% [7],[9],[13] 4.50% [7],[9],[13] 4.50% [7],[9],[13] 4.50% [7],[9],[13] 6.50% [2],[3],[19] 6.50% [2],[3],[19] 6.50% [2],[3],[19]  
Investment interest rate   8.81% [7],[9],[10],[13] 8.81% [7],[9],[10],[13] 8.81% [7],[9],[10],[13] 8.81% [7],[9],[10],[13] 8.81% [7],[9],[10],[13] 8.81% [7],[9],[10],[13] 11.35% [2],[3],[5],[19] 11.35% [2],[3],[5],[19] 11.35% [2],[3],[5],[19]  
Principal   $ 17,945,000 [7],[9],[11],[13]           $ 10,446,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Innocoll Pharmaceuticals Limited, Health Care Technology, Warrants                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[15]               300,000      
Investments at fair value [2],[3],[15]               $ 0      
Investment owned, balance (in shares) | shares [2],[3],[15]               112,990 112,990 112,990  
Investment, Identifier [Axis]: Integrity Marketing Acquisition, LLC, Insurance Brokers, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   (19,000) [7],[8],[9],[13]           $ (25,000) [1],[2],[3],[19]      
Investments at fair value   $ (3,000) [7],[8],[9],[13]           $ (26,000) [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [1],[2],[3],[19] 5.00% [1],[2],[3],[19] 5.00% [1],[2],[3],[19]  
Principal   $ 0 [7],[8],[9],[11],[13]           $ 0 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: Integrity Marketing Acquisition, LLC, Insurance Brokers, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   26,672,000 [7],[9],[13]           19,368,000 [2],[3],[19]      
Investments at fair value   $ 26,777,000 [7],[9],[13]           $ 19,363,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.00% [7],[9],[13] 5.00% [7],[9],[13] 5.00% [7],[9],[13] 5.00% [7],[9],[13] 5.00% [7],[9],[13] 5.00% [7],[9],[13] 5.00% [2],[3],[19] 5.00% [2],[3],[19] 5.00% [2],[3],[19]  
Investment interest rate   9.20% [7],[9],[10],[13] 9.20% [7],[9],[10],[13] 9.20% [7],[9],[10],[13] 9.20% [7],[9],[10],[13] 9.20% [7],[9],[10],[13] 9.20% [7],[9],[10],[13] 10.08% [2],[3],[5],[19] 10.08% [2],[3],[5],[19] 10.08% [2],[3],[5],[19]  
Principal   $ 26,812,000 [7],[9],[11],[13]           $ 19,559,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Integrity Marketing Acquisition, LLC, Insurance Brokers, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   (42,000) [7],[8],[9],[13]           (68,000) [1],[2],[3],[19]      
Investments at fair value   $ (8,000) [7],[8],[9],[13]           $ (66,000) [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [1],[2],[3],[19] 5.00% [1],[2],[3],[19] 5.00% [1],[2],[3],[19]  
Principal   $ 0 [7],[8],[9],[11],[13]           $ 0 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: Inventus Power, Inc., Electrical Components & Equipment, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   872,000 [7],[8],[9],[13]           (42,000) [1],[2],[3],[19]      
Investments at fair value   $ 850,000 [7],[8],[9],[13]           $ (86,000) [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   7.50% [7],[8],[9],[13] 7.50% [7],[8],[9],[13] 7.50% [7],[8],[9],[13] 7.50% [7],[8],[9],[13] 7.50% [7],[8],[9],[13] 7.50% [7],[8],[9],[13] 7.50% [1],[2],[3],[19] 7.50% [1],[2],[3],[19] 7.50% [1],[2],[3],[19]  
Investment interest rate [7],[8],[9],[10],[13]   11.87% 11.87% 11.87% 11.87% 11.87% 11.87%        
Principal   $ 885,000 [7],[8],[9],[11],[13]           $ 0 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: Inventus Power, Inc., Electrical Components & Equipment, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   32,761,000 [7],[9],[13]           32,876,000 [2],[3],[19]      
Investments at fair value   $ 32,440,000 [7],[9],[13]           $ 32,332,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   7.50% [7],[9],[13] 7.50% [7],[9],[13] 7.50% [7],[9],[13] 7.50% [7],[9],[13] 7.50% [7],[9],[13] 7.50% [7],[9],[13] 7.50% [2],[3],[19] 7.50% [2],[3],[19] 7.50% [2],[3],[19]  
Investment interest rate   11.78% [7],[9],[10],[13] 11.78% [7],[9],[10],[13] 11.78% [7],[9],[10],[13] 11.78% [7],[9],[10],[13] 11.78% [7],[9],[10],[13] 11.78% [7],[9],[10],[13] 12.46% [2],[3],[5],[19] 12.46% [2],[3],[5],[19] 12.46% [2],[3],[5],[19]  
Principal   $ 32,744,000 [7],[9],[11],[13]           $ 33,079,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: JN Bidco LLC, Health Care Technology, Common Stock                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   9,179,000 [7],[9],[20]           9,886,000 [2],[3]      
Investments at fair value   19,723,000 [7],[9],[20]           9,886,000 [2],[3]      
Investment, Identifier [Axis]: KKR Financial CLO Ltd, Multi-Sector Holdings, CLO Notes                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [9],[12],[13]   2,056,000                  
Investments at fair value [9],[12],[13]   $ 2,017,000                  
Investment, basis spread, variable rate (as a percent) [9],[12],[13]   7.10% 7.10% 7.10% 7.10% 7.10% 7.10%        
Investment interest rate [9],[10],[12],[13]   11.42% 11.42% 11.42% 11.42% 11.42% 11.42%        
Principal [9],[11],[12],[13]   $ 2,000,000                  
Investment, Identifier [Axis]: Kaseya Inc., Systems Software, Second Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [9],[13]   16,391,000                  
Investments at fair value [9],[13]   $ 16,483,000                  
Investment, basis spread, variable rate (as a percent) [9],[13]   5.00% 5.00% 5.00% 5.00% 5.00% 5.00%        
Investment interest rate [9],[10],[13]   9.16% 9.16% 9.16% 9.16% 9.16% 9.16%        
Principal [9],[11],[13]   $ 16,432,000                  
Investment, Identifier [Axis]: Kings Buyer, LLC, Environmental & Facilities Services, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[8],[9],[13]   2,452,000                  
Investments at fair value [7],[8],[9],[13]   $ 2,130,000                  
Investment, basis spread, variable rate (as a percent) [7],[8],[9],[13]   4.25% 4.25% 4.25% 4.25% 4.25% 4.25%        
Investment interest rate [7],[8],[9],[10],[13]   11.50% 11.50% 11.50% 11.50% 11.50% 11.50%        
Principal [7],[8],[9],[11],[13]   $ 2,495,000                  
Investment, Identifier [Axis]: Kings Buyer, LLC, Environmental & Facilities Services, First Lien Revolver 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [1],[2],[3],[19]               1,223,000      
Investments at fair value [1],[2],[3],[19]               $ 1,216,000      
Investment, basis spread, variable rate (as a percent) [1],[2],[3],[19]               4.00% 4.00% 4.00%  
Investment interest rate [1],[2],[3],[5],[19]               12.50% 12.50% 12.50%  
Principal [1],[2],[3],[6],[19]               $ 1,259,000      
Investment, Identifier [Axis]: Kings Buyer, LLC, Environmental & Facilities Services, First Lien Revolver 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [1],[2],[3],[19]               901,000      
Investments at fair value [1],[2],[3],[19]               $ 894,000      
Investment, basis spread, variable rate (as a percent) [1],[2],[3],[19]               4.00% 4.00% 4.00%  
Investment interest rate [1],[2],[3],[5],[19]               12.00% 12.00% 12.00%  
Principal [1],[2],[3],[6],[19]               $ 926,000      
Investment, Identifier [Axis]: Kings Buyer, LLC, Environmental & Facilities Services, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   36,971,000 [7],[9],[13]           37,211,000 [2],[3],[19]      
Investments at fair value   $ 35,627,000 [7],[9],[13]           $ 37,123,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.25% [7],[9],[13] 5.25% [7],[9],[13] 5.25% [7],[9],[13] 5.25% [7],[9],[13] 5.25% [7],[9],[13] 5.25% [7],[9],[13] 5.00% [2],[3],[19] 5.00% [2],[3],[19] 5.00% [2],[3],[19]  
Investment interest rate   9.35% [7],[9],[10],[13] 9.35% [7],[9],[10],[13] 9.35% [7],[9],[10],[13] 9.35% [7],[9],[10],[13] 9.35% [7],[9],[10],[13] 9.35% [7],[9],[10],[13] 9.95% [2],[3],[5],[19] 9.95% [2],[3],[5],[19] 9.95% [2],[3],[5],[19]  
Principal   $ 37,255,000 [7],[9],[11],[13]           $ 37,635,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Kings Buyer, LLC, Environmental & Facilities Services, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   16,338,000 [7],[9],[13]           16,423,000 [2],[3],[19]      
Investments at fair value   $ 15,666,000 [7],[9],[13]           $ 16,327,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.25% [7],[9],[13] 5.25% [7],[9],[13] 5.25% [7],[9],[13] 5.25% [7],[9],[13] 5.25% [7],[9],[13] 5.25% [7],[9],[13] 5.00% [2],[3],[19] 5.00% [2],[3],[19] 5.00% [2],[3],[19]  
Investment interest rate   9.25% [7],[9],[10],[13] 9.25% [7],[9],[10],[13] 9.25% [7],[9],[10],[13] 9.25% [7],[9],[10],[13] 9.25% [7],[9],[10],[13] 9.25% [7],[9],[10],[13] 10.68% [2],[3],[5],[19] 10.68% [2],[3],[5],[19] 10.68% [2],[3],[5],[19]  
Principal   $ 16,382,000 [7],[9],[11],[13]           $ 16,552,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Kite Midco II Inc., Research & Consulting Services, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[13]   9,517,000                  
Investments at fair value [7],[9],[13]   $ 9,510,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[13]   4.50% 4.50% 4.50% 4.50% 4.50% 4.50%        
Investment interest rate [7],[9],[10],[13]   8.77% 8.77% 8.77% 8.77% 8.77% 8.77%        
Principal [7],[9],[11],[13]   $ 9,644,000                  
Investment, Identifier [Axis]: Kite Midco II Inc., Research & Consulting Services, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[8],[9],[13]   (16,000)                  
Investments at fair value [7],[8],[9],[13]   $ (18,000)                  
Investment, basis spread, variable rate (as a percent) [7],[8],[9],[13]   4.50% 4.50% 4.50% 4.50% 4.50% 4.50%        
Principal [7],[8],[9],[11],[13]   $ 0                  
Investment, Identifier [Axis]: LABL, Inc., Office Services & Supplies, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   12,611,000 [9],[13]           18,861,000 [2],[19]      
Investments at fair value   $ 10,583,000 [9],[13]           $ 18,953,000 [2],[19]      
Investment, basis spread, variable rate (as a percent)   5.00% [9],[13] 5.00% [9],[13] 5.00% [9],[13] 5.00% [9],[13] 5.00% [9],[13] 5.00% [9],[13] 5.00% [2],[19] 5.00% [2],[19] 5.00% [2],[19]  
Investment interest rate   9.26% [9],[10],[13] 9.26% [9],[10],[13] 9.26% [9],[10],[13] 9.26% [9],[10],[13] 9.26% [9],[10],[13] 9.26% [9],[10],[13] 9.95% [2],[5],[19] 9.95% [2],[5],[19] 9.95% [2],[5],[19]  
Principal   $ 12,843,000 [9],[11],[13]           $ 19,351,000 [2],[6],[19]      
Investment, Identifier [Axis]: LDS Buyer, LLC, Air Freight & Logistics, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[8],[9],[13]   (23,000)                  
Investments at fair value [7],[8],[9],[13]   $ (18,000)                  
Investment, basis spread, variable rate (as a percent) [7],[8],[9],[13]   5.00% 5.00% 5.00% 5.00% 5.00% 5.00%        
Principal [7],[8],[9],[11],[13]   $ 0                  
Investment, Identifier [Axis]: LDS Buyer, LLC, Air Freight & Logistics, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[13]   13,677,000                  
Investments at fair value [7],[9],[13]   $ 13,714,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[13]   5.00% 5.00% 5.00% 5.00% 5.00% 5.00%        
Investment interest rate [7],[9],[10],[13]   9.16% 9.16% 9.16% 9.16% 9.16% 9.16%        
Principal [7],[9],[11],[13]   $ 13,834,000                  
Investment, Identifier [Axis]: LDS Buyer, LLC, Air Freight & Logistics, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[13]   2,706,000                  
Investments at fair value [7],[9],[13]   $ 2,715,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[13]   5.00% 5.00% 5.00% 5.00% 5.00% 5.00%        
Investment interest rate [7],[9],[10],[13]   9.16% 9.16% 9.16% 9.16% 9.16% 9.16%        
Principal [7],[9],[11],[13]   $ 2,739,000                  
Investment, Identifier [Axis]: LSL Holdco, LLC, Health Care Distributors, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   1,780,000 [7],[8],[9],[13]           1,982,000 [1],[2],[3],[19]      
Investments at fair value   $ 1,701,000 [7],[8],[9],[13]           $ 1,849,000 [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   6.00% [7],[8],[9],[13] 6.00% [7],[8],[9],[13] 6.00% [7],[8],[9],[13] 6.00% [7],[8],[9],[13] 6.00% [7],[8],[9],[13] 6.00% [7],[8],[9],[13] 6.00% [1],[2],[3],[19] 6.00% [1],[2],[3],[19] 6.00% [1],[2],[3],[19]  
Investment interest rate   10.26% [7],[8],[9],[10],[13] 10.26% [7],[8],[9],[10],[13] 10.26% [7],[8],[9],[10],[13] 10.26% [7],[8],[9],[10],[13] 10.26% [7],[8],[9],[10],[13] 10.26% [7],[8],[9],[10],[13] 10.95% [1],[2],[3],[5],[19] 10.95% [1],[2],[3],[5],[19] 10.95% [1],[2],[3],[5],[19]  
Principal   $ 1,802,000 [7],[8],[9],[11],[13]           $ 2,014,000 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: LSL Holdco, LLC, Health Care Distributors, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   2,606,000 [7],[9],[13]           2,601,000 [2],[3],[19]      
Investments at fair value   $ 2,579,000 [7],[9],[13]           $ 2,539,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [2],[3],[19] 6.00% [2],[3],[19] 6.00% [2],[3],[19]  
Investment interest rate   10.26% [7],[9],[10],[13] 10.26% [7],[9],[10],[13] 10.26% [7],[9],[10],[13] 10.26% [7],[9],[10],[13] 10.26% [7],[9],[10],[13] 10.26% [7],[9],[10],[13] 10.95% [2],[3],[5],[19] 10.95% [2],[3],[5],[19] 10.95% [2],[3],[5],[19]  
Principal   $ 2,680,000 [7],[9],[11],[13]           $ 2,708,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: LSL Holdco, LLC, Health Care Distributors, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   22,824,000 [7],[9],[13]           22,977,000 [2],[3],[19]      
Investments at fair value   $ 22,145,000 [7],[9],[13]           $ 21,802,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [2],[3],[19] 6.00% [2],[3],[19] 6.00% [2],[3],[19]  
Investment interest rate   10.26% [7],[9],[10],[13] 10.26% [7],[9],[10],[13] 10.26% [7],[9],[10],[13] 10.26% [7],[9],[10],[13] 10.26% [7],[9],[10],[13] 10.26% [7],[9],[10],[13] 10.95% [2],[3],[5],[19] 10.95% [2],[3],[5],[19] 10.95% [2],[3],[5],[19]  
Principal   $ 23,017,000 [7],[9],[11],[13]           $ 23,256,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Latam Airlines Group S.A., Passenger Airlines, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[15],[19]               25,039,000      
Investments at fair value [2],[15],[19]               $ 26,556,000      
Investment, basis spread, variable rate (as a percent) [2],[15],[19]               9.50% 9.50% 9.50%  
Investment interest rate [2],[5],[15],[19]               14.95% 14.95% 14.95%  
Principal [2],[6],[15],[19]               $ 26,156,000      
Investment, Identifier [Axis]: Learfield Communications, LLC, Movies & Entertainment, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   23,737,000 [9],[13]           30,779,000 [2],[19]      
Investments at fair value   $ 24,051,000 [9],[13]           $ 30,863,000 [2],[19]      
Investment, basis spread, variable rate (as a percent)   4.50% [9],[13] 4.50% [9],[13] 4.50% [9],[13] 4.50% [9],[13] 4.50% [9],[13] 4.50% [9],[13] 5.50% [2],[19] 5.50% [2],[19] 5.50% [2],[19]  
Investment interest rate   8.66% [9],[10],[13] 8.66% [9],[10],[13] 8.66% [9],[10],[13] 8.66% [9],[10],[13] 8.66% [9],[10],[13] 8.66% [9],[10],[13] 10.35% [2],[5],[19] 10.35% [2],[5],[19] 10.35% [2],[5],[19]  
Principal   $ 23,781,000 [9],[11],[13]           $ 30,856,000 [2],[6],[19]      
Investment, Identifier [Axis]: Legends Hospitality Holding Company, LLC, Specialized Consumer Services, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   260,000 [7],[8],[9],[13]           (61,000) [1],[2],[3],[19]      
Investments at fair value   $ 260,000 [7],[8],[9],[13]           $ (60,000) [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [1],[2],[3],[19] 5.00% [1],[2],[3],[19] 5.00% [1],[2],[3],[19]  
Investment interest rate [7],[8],[9],[10],[13]   9.16% 9.16% 9.16% 9.16% 9.16% 9.16%        
Principal   $ 310,000 [7],[8],[9],[11],[13]           $ 0 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: Legends Hospitality Holding Company, LLC, Specialized Consumer Services, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   26,462,000 [7],[9],[13]           25,839,000 [2],[3],[19]      
Investments at fair value   $ 26,445,000 [7],[9],[13]           $ 25,847,000 [2],[3],[19]      
Investment, interest rate, paid in kind (as a percent) [7],[9],[13]   2.75% 2.75% 2.75% 2.75% 2.75% 2.75%        
Investment, basis spread, variable rate (as a percent)   5.50% [7],[9],[13] 5.50% [7],[9],[13] 5.50% [7],[9],[13] 5.50% [7],[9],[13] 5.50% [7],[9],[13] 5.50% [7],[9],[13] 5.00% [2],[3],[19] 5.00% [2],[3],[19] 5.00% [2],[3],[19]  
Investment interest rate   6.96% [7],[9],[10],[13] 6.96% [7],[9],[10],[13] 6.96% [7],[9],[10],[13] 6.96% [7],[9],[10],[13] 6.96% [7],[9],[10],[13] 6.96% [7],[9],[10],[13] 10.13% [2],[3],[5],[19] 10.13% [2],[3],[5],[19] 10.13% [2],[3],[5],[19]  
Principal   $ 26,902,000 [7],[9],[11],[13]           $ 26,358,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Legends Hospitality Holding Company, LLC, Specialized Consumer Services, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   936,000 [7],[8],[9],[13]           (15,000) [1],[2],[3],[19]      
Investments at fair value   $ 932,000 [7],[8],[9],[13]           $ (15,000) [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [1],[2],[3],[19] 5.00% [1],[2],[3],[19] 5.00% [1],[2],[3],[19]  
Investment interest rate [7],[8],[9],[10],[13]   9.17% 9.17% 9.17% 9.17% 9.17% 9.17%        
Principal   $ 959,000 [7],[8],[9],[11],[13]           $ 0 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: Lightbox Intermediate, L.P., Real Estate Services, First Lien Rvolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[8],[9],[13]   (16,000)                  
Investments at fair value [7],[8],[9],[13]   $ (13,000)                  
Investment, basis spread, variable rate (as a percent) [7],[8],[9],[13]   5.25% 5.25% 5.25% 5.25% 5.25% 5.25%        
Principal [7],[8],[9],[11],[13]   $ 0                  
Investment, Identifier [Axis]: Lightbox Intermediate, L.P., Real Estate Services, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   19,306,000 [7],[9],[13]           55,220,000 [2],[3],[19]      
Investments at fair value   $ 19,360,000 [7],[9],[13]           $ 54,197,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.25% [7],[9],[13] 5.25% [7],[9],[13] 5.25% [7],[9],[13] 5.25% [7],[9],[13] 5.25% [7],[9],[13] 5.25% [7],[9],[13] 5.00% [2],[3],[19] 5.00% [2],[3],[19] 5.00% [2],[3],[19]  
Investment interest rate   9.25% [7],[9],[10],[13] 9.25% [7],[9],[10],[13] 9.25% [7],[9],[10],[13] 9.25% [7],[9],[10],[13] 9.25% [7],[9],[10],[13] 9.25% [7],[9],[10],[13] 9.96% [2],[3],[5],[19] 9.96% [2],[3],[5],[19] 9.96% [2],[3],[5],[19]  
Principal   $ 19,558,000 [7],[9],[11],[13]           $ 55,873,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Liquid Environmental Solutions Corporation, Environmental & Facilities Services, Common Stock                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3]               563,000      
Investments at fair value [2],[3]               $ 64,000      
Investment owned, balance (in shares) | shares [2],[3]               559 559 559  
Investment, Identifier [Axis]: Liquid Environmental Solutions Corporation, Environmental & Facilities Services, Second Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[19]               $ 3,123,000      
Investments at fair value [2],[3],[19]               $ 2,993,000      
Investment, basis spread, variable rate (as a percent) [2],[3],[19]               8.50% 8.50% 8.50%  
Investment interest rate [2],[3],[5],[19]               13.20% 13.20% 13.20%  
Principal [2],[3],[6],[19]               $ 3,167,000      
Investment, Identifier [Axis]: Liquid Environmental Solutions Corporation, Environmental & Facilities Services, Second Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[19]               5,785,000      
Investments at fair value [2],[3],[19]               $ 5,502,000      
Investment, basis spread, variable rate (as a percent) [2],[3],[19]               8.50% 8.50% 8.50%  
Investment interest rate [2],[3],[5],[19]               13.20% 13.20% 13.20%  
Principal [2],[3],[6],[19]               $ 5,822,000      
Investment, Identifier [Axis]: M2S Group Intermediate Holdings Inc, Multi-Sector Holdings, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [9],[13]   3,980,000                  
Investments at fair value [9],[13]   $ 3,978,000                  
Investment, basis spread, variable rate (as a percent) [9],[13]   4.75% 4.75% 4.75% 4.75% 4.75% 4.75%        
Investment interest rate [9],[10],[13]   9.06% 9.06% 9.06% 9.06% 9.06% 9.06%        
Principal [9],[11],[13]   $ 4,000,000                  
Investment, Identifier [Axis]: MHE Intermediate Holdings, LLC, Diversified Support Services, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   701,000 [7],[8],[9],[13]           (21,000) [1],[2],[3],[19]      
Investments at fair value   $ 688,000 [7],[8],[9],[13]           $ (24,000) [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   6.00% [7],[8],[9],[13] 6.00% [7],[8],[9],[13] 6.00% [7],[8],[9],[13] 6.00% [7],[8],[9],[13] 6.00% [7],[8],[9],[13] 6.00% [7],[8],[9],[13] 6.00% [1],[2],[3],[19] 6.00% [1],[2],[3],[19] 6.00% [1],[2],[3],[19]  
Investment interest rate [7],[8],[9],[10],[13]   10.46% 10.46% 10.46% 10.46% 10.46% 10.46%        
Principal   $ 714,000 [7],[8],[9],[11],[13]           $ 0 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: MHE Intermediate Holdings, LLC, Diversified Support Services, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   2,564,000 [7],[9],[13]           2,561,000 [2],[3],[19]      
Investments at fair value   $ 2,539,000 [7],[9],[13]           $ 2,568,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [2],[3],[19] 6.00% [2],[3],[19] 6.00% [2],[3],[19]  
Investment interest rate   10.46% [7],[9],[10],[13] 10.46% [7],[9],[10],[13] 10.46% [7],[9],[10],[13] 10.46% [7],[9],[10],[13] 10.46% [7],[9],[10],[13] 10.46% [7],[9],[10],[13] 11.40% [2],[3],[5],[19] 11.40% [2],[3],[5],[19] 11.40% [2],[3],[5],[19]  
Principal   $ 2,577,000 [7],[9],[11],[13]           $ 2,604,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: MHE Intermediate Holdings, LLC, Diversified Support Services, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   7,188,000 [7],[9],[13]           7,167,000 [2],[3],[19]      
Investments at fair value   $ 7,115,000 [7],[9],[13]           $ 7,125,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [2],[3],[19] 6.00% [2],[3],[19] 6.00% [2],[3],[19]  
Investment interest rate   10.46% [7],[9],[10],[13] 10.46% [7],[9],[10],[13] 10.46% [7],[9],[10],[13] 10.46% [7],[9],[10],[13] 10.46% [7],[9],[10],[13] 10.46% [7],[9],[10],[13] 11.40% [2],[3],[5],[19] 11.40% [2],[3],[5],[19] 11.40% [2],[3],[5],[19]  
Principal   $ 7,224,000 [7],[9],[11],[13]           $ 7,224,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: MRI Software LLC, Application Software, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   429,000 [7],[8],[9],[13]           (69,000) [1],[2],[3],[19]      
Investments at fair value   $ 428,000 [7],[8],[9],[13]           $ (44,000) [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   4.75% [7],[8],[9],[13] 4.75% [7],[8],[9],[13] 4.75% [7],[8],[9],[13] 4.75% [7],[8],[9],[13] 4.75% [7],[8],[9],[13] 4.75% [7],[8],[9],[13] 4.75% [1],[2],[3],[19] 4.75% [1],[2],[3],[19] 4.75% [1],[2],[3],[19]  
Investment interest rate [7],[8],[9],[10],[13]   8.75% 8.75% 8.75% 8.75% 8.75% 8.75%        
Principal   $ 455,000 [7],[8],[9],[11],[13]           $ 0 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: MRI Software LLC, Application Software, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   40,659,000 [7],[9],[13]           33,438,000 [2],[3],[19]      
Investments at fair value   $ 40,602,000 [7],[9],[13]           $ 33,503,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   4.75% [7],[9],[13] 4.75% [7],[9],[13] 4.75% [7],[9],[13] 4.75% [7],[9],[13] 4.75% [7],[9],[13] 4.75% [7],[9],[13] 4.75% [2],[3],[19] 4.75% [2],[3],[19] 4.75% [2],[3],[19]  
Investment interest rate   8.75% [7],[9],[10],[13] 8.75% [7],[9],[10],[13] 8.75% [7],[9],[10],[13] 8.75% [7],[9],[10],[13] 8.75% [7],[9],[10],[13] 8.75% [7],[9],[10],[13] 9.35% [2],[3],[5],[19] 9.35% [2],[3],[5],[19] 9.35% [2],[3],[5],[19]  
Principal   $ 40,843,000 [7],[9],[11],[13]           $ 33,831,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: MRI Software LLC, Application Software, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   13,669,000 [7],[9],[13]           13,797,000 [2],[3],[19]      
Investments at fair value   $ 13,604,000 [7],[9],[13]           $ 13,695,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   4.75% [7],[9],[13] 4.75% [7],[9],[13] 4.75% [7],[9],[13] 4.75% [7],[9],[13] 4.75% [7],[9],[13] 4.75% [7],[9],[13] 4.75% [2],[3],[19] 4.75% [2],[3],[19] 4.75% [2],[3],[19]  
Investment interest rate   8.75% [7],[9],[10],[13] 8.75% [7],[9],[10],[13] 8.75% [7],[9],[10],[13] 8.75% [7],[9],[10],[13] 8.75% [7],[9],[10],[13] 8.75% [7],[9],[10],[13] 9.35% [2],[3],[5],[19] 9.35% [2],[3],[5],[19] 9.35% [2],[3],[5],[19]  
Principal   $ 13,685,000 [7],[9],[11],[13]           $ 13,829,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: MRI Software LLC, Application Software, First Lien Term Loan 3                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   2,409,000 [7],[9],[13]           6,609,000 [2],[3],[19]      
Investments at fair value   $ 2,405,000 [7],[9],[13]           $ 6,588,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   4.75% [7],[9],[13] 4.75% [7],[9],[13] 4.75% [7],[9],[13] 4.75% [7],[9],[13] 4.75% [7],[9],[13] 4.75% [7],[9],[13] 4.75% [2],[3],[19] 4.75% [2],[3],[19] 4.75% [2],[3],[19]  
Investment interest rate   8.75% [7],[9],[10],[13] 8.75% [7],[9],[10],[13] 8.75% [7],[9],[10],[13] 8.75% [7],[9],[10],[13] 8.75% [7],[9],[10],[13] 8.75% [7],[9],[10],[13] 9.35% [2],[3],[5],[19] 9.35% [2],[3],[5],[19] 9.35% [2],[3],[5],[19]  
Principal   $ 2,419,000 [7],[9],[11],[13]           $ 6,652,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: MRI Software LLC, Application Software, First Lien Term Loan 4                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [1],[2],[3],[19]               776,000      
Investments at fair value [1],[2],[3],[19]               $ 760,000      
Investment, basis spread, variable rate (as a percent) [1],[2],[3],[19]               4.75% 4.75% 4.75%  
Investment interest rate [1],[2],[3],[5],[19]               9.35% 9.35% 9.35%  
Principal [1],[2],[3],[6],[19]               $ 792,000      
Investment, Identifier [Axis]: Marinus Pharmaceuticals, Inc., Pharmaceuticals, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[15]               8,096,000      
Investments at fair value [2],[3],[15]               $ 7,773,000      
Investment interest rate [2],[3],[5],[15]               11.50% 11.50% 11.50%  
Principal [2],[3],[6],[15]               $ 8,139,000      
Investment, Identifier [Axis]: Marinus Pharmaceuticals, Inc., Pharmaceuticals, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[15]               3,835,000      
Investments at fair value [2],[3],[15]               $ 3,682,000      
Investment interest rate [2],[3],[5],[15]               11.50% 11.50% 11.50%  
Principal [2],[3],[6],[15]               $ 3,855,000      
Investment, Identifier [Axis]: Marinus Pharmaceuticals, Inc., Pharmaceuticals, First Lien Term Loan 3                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[15]               4,048,000      
Investments at fair value [2],[3],[15]               $ 3,886,000      
Investment interest rate [2],[3],[5],[15]               11.50% 11.50% 11.50%  
Principal [2],[3],[6],[15]               $ 4,070,000      
Investment, Identifier [Axis]: McAfee Corp, Systems Software, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [9],[13]   9,620,000                  
Investments at fair value [9],[13]   $ 9,557,000                  
Investment, basis spread, variable rate (as a percent) [9],[13]   3.00% 3.00% 3.00% 3.00% 3.00% 3.00%        
Investment interest rate [9],[10],[13]   7.22% 7.22% 7.22% 7.22% 7.22% 7.22%        
Principal [9],[11],[13]   $ 9,975,000                  
Investment, Identifier [Axis]: Mesoblast, Inc., Biotechnology, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   6,000,000 [7],[9],[12]           7,359,000 [2],[3],[15]      
Investments at fair value   $ 6,256,000 [7],[9],[12]           $ 7,373,000 [2],[3],[15]      
Investment interest rate   9.75% [7],[9],[10],[12] 9.75% [7],[9],[10],[12] 9.75% [7],[9],[10],[12] 9.75% [7],[9],[10],[12] 9.75% [7],[9],[10],[12] 9.75% [7],[9],[10],[12] 9.75% [2],[3],[5],[15] 9.75% [2],[3],[5],[15] 9.75% [2],[3],[5],[15]  
Principal   $ 6,128,000 [7],[9],[11],[12]           $ 7,660,000 [2],[3],[6],[15]      
Investment, Identifier [Axis]: Mesoblast, Inc., Biotechnology, Warrants                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[12],[20]   545,000                  
Investments at fair value [7],[9],[12],[20]   $ 830,000                  
Investment owned, balance (in shares) | shares [7],[9],[12],[20]   129,939 129,939 129,939 129,939 129,939 129,939        
Investment, Identifier [Axis]: Mesoblast, Inc., Biotechnology, Warrants 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[15]               23,000      
Investments at fair value [2],[3],[15]               $ 154,000      
Investment owned, balance (in shares) | shares [2],[3],[15]               33,409 33,409 33,409  
Investment, Identifier [Axis]: Mesoblast, Inc., Biotechnology, Warrants 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[15]               $ 545,000      
Investments at fair value [2],[3],[15]               $ 416,000      
Investment owned, balance (in shares) | shares [2],[3],[15]               129,939 129,939 129,939  
Investment, Identifier [Axis]: Mindbody, Inc., Internet Services & Infrastructure, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   $ (24,000) [7],[8],[9],[13]           $ (21,000) [1],[2],[3],[19]      
Investments at fair value   $ 0 [7],[8],[9],[13]           $ (56,000) [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   7.00% [7],[8],[9],[13] 7.00% [7],[8],[9],[13] 7.00% [7],[8],[9],[13] 7.00% [7],[8],[9],[13] 7.00% [7],[8],[9],[13] 7.00% [7],[8],[9],[13] 7.00% [1],[2],[3],[19] 7.00% [1],[2],[3],[19] 7.00% [1],[2],[3],[19]  
Principal   $ 0 [7],[8],[9],[11],[13]           $ 0 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: Mindbody, Inc., Internet Services & Infrastructure, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   39,054,000 [7],[9],[13]           51,142,000 [2],[3],[19]      
Investments at fair value   $ 39,221,000 [7],[9],[13]           $ 50,806,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 7.00% [2],[3],[19] 7.00% [2],[3],[19] 7.00% [2],[3],[19]  
Investment interest rate   10.46% [7],[9],[10],[13] 10.46% [7],[9],[10],[13] 10.46% [7],[9],[10],[13] 10.46% [7],[9],[10],[13] 10.46% [7],[9],[10],[13] 10.46% [7],[9],[10],[13] 12.40% [2],[3],[5],[19] 12.40% [2],[3],[5],[19] 12.40% [2],[3],[5],[19]  
Principal   $ 39,221,000 [7],[9],[11],[13]           $ 51,356,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Mindbody, Inc., Internet Services & Infrastructure, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   1,718,000 [7],[9],[13]           2,255,000 [2],[3],[19]      
Investments at fair value   $ 1,752,000 [7],[9],[13]           $ 2,269,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   7.00% [7],[9],[13] 7.00% [7],[9],[13] 7.00% [7],[9],[13] 7.00% [7],[9],[13] 7.00% [7],[9],[13] 7.00% [7],[9],[13] 7.00% [2],[3],[19] 7.00% [2],[3],[19] 7.00% [2],[3],[19]  
Investment interest rate   11.00% [7],[9],[10],[13] 11.00% [7],[9],[10],[13] 11.00% [7],[9],[10],[13] 11.00% [7],[9],[10],[13] 11.00% [7],[9],[10],[13] 11.00% [7],[9],[10],[13] 12.40% [2],[3],[5],[19] 12.40% [2],[3],[5],[19] 12.40% [2],[3],[5],[19]  
Principal   $ 1,752,000 [7],[9],[11],[13]           $ 2,294,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Minotaur Acquisition, Inc., Financial Exchanges & Data, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   (11,000) [7],[8],[9],[12],[13]           (13,000) [1],[2],[3],[15],[19]      
Investments at fair value   $ (2,000) [7],[8],[9],[12],[13]           $ (12,000) [1],[2],[3],[15],[19]      
Investment, basis spread, variable rate (as a percent)   5.00% [7],[8],[9],[12],[13] 5.00% [7],[8],[9],[12],[13] 5.00% [7],[8],[9],[12],[13] 5.00% [7],[8],[9],[12],[13] 5.00% [7],[8],[9],[12],[13] 5.00% [7],[8],[9],[12],[13] 5.00% [1],[2],[3],[15],[19] 5.00% [1],[2],[3],[15],[19] 5.00% [1],[2],[3],[15],[19]  
Principal   $ 0 [7],[8],[9],[11],[12],[13]           $ 0 [1],[2],[3],[6],[15],[19]      
Investment, Identifier [Axis]: Minotaur Acquisition, Inc., Financial Exchanges & Data, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   6,857,000 [7],[9],[12],[13]           6,923,000 [2],[3],[15],[19]      
Investments at fair value   $ 6,939,000 [7],[9],[12],[13]           $ 6,932,000 [2],[3],[15],[19]      
Investment, basis spread, variable rate (as a percent)   5.00% [7],[9],[12],[13] 5.00% [7],[9],[12],[13] 5.00% [7],[9],[12],[13] 5.00% [7],[9],[12],[13] 5.00% [7],[9],[12],[13] 5.00% [7],[9],[12],[13] 5.00% [2],[3],[15],[19] 5.00% [2],[3],[15],[19] 5.00% [2],[3],[15],[19]  
Investment interest rate   9.16% [7],[9],[10],[12],[13] 9.16% [7],[9],[10],[12],[13] 9.16% [7],[9],[10],[12],[13] 9.16% [7],[9],[10],[12],[13] 9.16% [7],[9],[10],[12],[13] 9.16% [7],[9],[10],[12],[13] 9.85% [2],[3],[5],[15],[19] 9.85% [2],[3],[5],[15],[19] 9.85% [2],[3],[5],[15],[19]  
Principal   $ 6,965,000 [7],[9],[11],[12],[13]           $ 7,056,000 [2],[3],[6],[15],[19]      
Investment, Identifier [Axis]: Minotaur Acquisition, Inc., Financial Exchanges & Data, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   (12,000) [7],[8],[9],[12],[13]           (12,000) [1],[2],[3],[15],[19]      
Investments at fair value   $ (4,000) [7],[8],[9],[12],[13]           $ (11,000) [1],[2],[3],[15],[19]      
Investment, basis spread, variable rate (as a percent)   5.00% [7],[8],[9],[12],[13] 5.00% [7],[8],[9],[12],[13] 5.00% [7],[8],[9],[12],[13] 5.00% [7],[8],[9],[12],[13] 5.00% [7],[8],[9],[12],[13] 5.00% [7],[8],[9],[12],[13] 5.00% [1],[2],[3],[15],[19] 5.00% [1],[2],[3],[15],[19] 5.00% [1],[2],[3],[15],[19]  
Principal   $ 0 [7],[8],[9],[11],[12],[13]           $ 0 [1],[2],[3],[6],[15],[19]      
Investment, Identifier [Axis]: Minotaur Acquisition, Inc., Financial Exchanges & Data, First Lien Term Loan 3                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   1,120,000 [7],[9],[12],[13]           1,152,000 [2],[3],[15],[19]      
Investments at fair value   $ 1,133,000 [7],[9],[12],[13]           $ 1,156,000 [2],[3],[15],[19]      
Investment, basis spread, variable rate (as a percent)   5.00% [7],[9],[12],[13] 5.00% [7],[9],[12],[13] 5.00% [7],[9],[12],[13] 5.00% [7],[9],[12],[13] 5.00% [7],[9],[12],[13] 5.00% [7],[9],[12],[13] 5.00% [2],[3],[15],[19] 5.00% [2],[3],[15],[19] 5.00% [2],[3],[15],[19]  
Investment interest rate   9.16% [7],[9],[10],[12],[13] 9.16% [7],[9],[10],[12],[13] 9.16% [7],[9],[10],[12],[13] 9.16% [7],[9],[10],[12],[13] 9.16% [7],[9],[10],[12],[13] 9.16% [7],[9],[10],[12],[13] 9.85% [2],[3],[5],[15],[19] 9.85% [2],[3],[5],[15],[19] 9.85% [2],[3],[5],[15],[19]  
Principal   $ 1,137,000 [7],[9],[11],[12],[13]           $ 1,176,000 [2],[3],[6],[15],[19]      
Investment, Identifier [Axis]: Modena Buyer LLC, Application Software, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   23,245,000 [9],[13]           27,169,000 [2],[19]      
Investments at fair value   $ 23,373,000 [9],[13]           $ 26,588,000 [2],[19]      
Investment, basis spread, variable rate (as a percent)   4.50% [9],[13] 4.50% [9],[13] 4.50% [9],[13] 4.50% [9],[13] 4.50% [9],[13] 4.50% [9],[13] 4.50% [2],[19] 4.50% [2],[19] 4.50% [2],[19]  
Investment interest rate   8.81% [9],[10],[13] 8.81% [9],[10],[13] 8.81% [9],[10],[13] 8.81% [9],[10],[13] 8.81% [9],[10],[13] 8.81% [9],[10],[13] 9.10% [2],[5],[19] 9.10% [2],[5],[19] 9.10% [2],[5],[19]  
Principal   $ 23,635,000 [9],[11],[13]           $ 27,705,000 [2],[6],[19]      
Investment, Identifier [Axis]: Monotype Imaging Holdings Inc., Application Software, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   (53,000) [7],[8],[9],[13]           (65,000) [1],[2],[3],[19]      
Investments at fair value   $ (6,000) [7],[8],[9],[13]           $ 0 [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.50% [7],[8],[9],[13] 5.50% [7],[8],[9],[13] 5.50% [7],[8],[9],[13] 5.50% [7],[8],[9],[13] 5.50% [7],[8],[9],[13] 5.50% [7],[8],[9],[13] 5.50% [1],[2],[3],[19] 5.50% [1],[2],[3],[19] 5.50% [1],[2],[3],[19]  
Principal   $ 0 [7],[8],[9],[11],[13]           $ 0 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: Monotype Imaging Holdings Inc., Application Software, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   37,373,000 [7],[9],[13]           37,751,000 [2],[3],[19]      
Investments at fair value   $ 37,934,000 [7],[9],[13]           $ 38,326,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.50% [7],[9],[13] 5.50% [7],[9],[13] 5.50% [7],[9],[13] 5.50% [7],[9],[13] 5.50% [7],[9],[13] 5.50% [7],[9],[13] 5.50% [2],[3],[19] 5.50% [2],[3],[19] 5.50% [2],[3],[19]  
Investment interest rate   9.66% [7],[9],[10],[13] 9.66% [7],[9],[10],[13] 9.66% [7],[9],[10],[13] 9.66% [7],[9],[10],[13] 9.66% [7],[9],[10],[13] 9.66% [7],[9],[10],[13] 10.56% [2],[3],[5],[19] 10.56% [2],[3],[5],[19] 10.56% [2],[3],[5],[19]  
Principal   $ 37,942,000 [7],[9],[11],[13]           $ 38,326,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Monotype Imaging Holdings Inc., Application Software, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   791,000 [7],[8],[9],[13]           (24,000) [1],[2],[3],[19]      
Investments at fair value   $ 821,000 [7],[8],[9],[13]           $ 0 [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.50% [7],[8],[9],[13] 5.50% [7],[8],[9],[13] 5.50% [7],[8],[9],[13] 5.50% [7],[8],[9],[13] 5.50% [7],[8],[9],[13] 5.50% [7],[8],[9],[13] 5.50% [1],[2],[3],[19] 5.50% [1],[2],[3],[19] 5.50% [1],[2],[3],[19]  
Investment interest rate [7],[8],[9],[10],[13]   9.66% 9.66% 9.66% 9.66% 9.66% 9.66%        
Principal   $ 821,000 [7],[8],[9],[11],[13]           $ 0 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: Mosaic Companies, LLC, Home Improvement Retail, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   21,401,000 [7],[9],[13],[17]           49,891,000 [2],[3],[19]      
Investments at fair value   $ 2,528,000 [7],[9],[13],[17]           $ 48,775,000 [2],[3],[19]      
Investment, interest rate, paid in kind (as a percent) [2],[3],[19]               3.25% 3.25% 3.25%  
Investment, basis spread, variable rate (as a percent)   8.25% [7],[9],[13],[17] 8.25% [7],[9],[13],[17] 8.25% [7],[9],[13],[17] 8.25% [7],[9],[13],[17] 8.25% [7],[9],[13],[17] 8.25% [7],[9],[13],[17] 8.25% [2],[3],[19] 8.25% [2],[3],[19] 8.25% [2],[3],[19]  
Investment interest rate [2],[3],[5],[19]               10.58% 10.58% 10.58%  
Principal   $ 23,410,000 [7],[9],[11],[13],[17]           $ 50,077,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: NN, Inc., Industrial Machinery & Supplies & Components, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[15],[19]               56,248,000      
Investments at fair value [2],[3],[15],[19]               $ 55,737,000      
Investment, interest rate, paid in kind (as a percent) [2],[3],[15],[19]               2.00% 2.00% 2.00%  
Investment, basis spread, variable rate (as a percent) [2],[3],[15],[19]               8.88% 8.88% 8.88%  
Investment interest rate [2],[3],[5],[15],[19]               11.82% 11.82% 11.82%  
Principal [2],[3],[6],[15],[19]               $ 56,701,000      
Investment, Identifier [Axis]: NN, Inc., Industrial Machinery & Supplies & Components, Warrants 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   0 [9],[12],[20]           0 [2],[15]      
Investments at fair value   $ 1,000,000 [9],[12],[20]           $ 1,898,000 [2],[15]      
Investment owned, balance (in shares) | shares   487,870 [9],[12],[20] 487,870 [9],[12],[20] 487,870 [9],[12],[20] 487,870 [9],[12],[20] 487,870 [9],[12],[20] 487,870 [9],[12],[20] 487,870 [2],[15] 487,870 [2],[15] 487,870 [2],[15]  
Investment, Identifier [Axis]: NN, Inc., Industrial Machinery & Supplies & Components, Warrants 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   $ 0 [9],[12],[20]           $ 0 [2],[15]      
Investments at fair value   $ 491,000 [9],[12],[20]           $ 932,000 [2],[15]      
Investment owned, balance (in shares) | shares   239,590 [9],[12],[20] 239,590 [9],[12],[20] 239,590 [9],[12],[20] 239,590 [9],[12],[20] 239,590 [9],[12],[20] 239,590 [9],[12],[20] 239,590 [2],[15] 239,590 [2],[15] 239,590 [2],[15]  
Investment, Identifier [Axis]: Nellson Nutraceutical, LLC, Packaged Foods & Meats, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[8],[9],[12],[13]   $ 244,000                  
Investments at fair value [7],[8],[9],[12],[13]   $ 245,000                  
Investment, basis spread, variable rate (as a percent) [7],[8],[9],[12],[13]   5.75% 5.75% 5.75% 5.75% 5.75% 5.75%        
Investment interest rate [7],[8],[9],[10],[12],[13]   9.75% 9.75% 9.75% 9.75% 9.75% 9.75%        
Principal [7],[8],[9],[11],[12],[13]   $ 272,000                  
Investment, Identifier [Axis]: Nellson Nutraceutical, LLC, Packaged Foods & Meats, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[12],[13]   2,826,000                  
Investments at fair value [7],[9],[12],[13]   $ 2,828,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[12],[13]   5.75% 5.75% 5.75% 5.75% 5.75% 5.75%        
Investment interest rate [7],[9],[10],[12],[13]   9.75% 9.75% 9.75% 9.75% 9.75% 9.75%        
Principal [7],[9],[11],[12],[13]   $ 2,866,000                  
Investment, Identifier [Axis]: Nellson Nutraceutical, LLC, Packaged Foods & Meats, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[12],[13]   9,521,000                  
Investments at fair value [7],[9],[12],[13]   $ 9,527,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[12],[13]   5.75% 5.75% 5.75% 5.75% 5.75% 5.75%        
Investment interest rate [7],[9],[10],[12],[13]   9.75% 9.75% 9.75% 9.75% 9.75% 9.75%        
Principal [7],[9],[11],[12],[13]   $ 9,655,000                  
Investment, Identifier [Axis]: Nellson Nutraceutical, LLC, Packaged Foods & Meats, First Lien Term Loan 3                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[8],[9],[12],[13]   (6,000)                  
Investments at fair value [7],[8],[9],[12],[13]   $ (5,000)                  
Investment, basis spread, variable rate (as a percent) [7],[8],[9],[12],[13]   5.75% 5.75% 5.75% 5.75% 5.75% 5.75%        
Principal [7],[8],[9],[11],[12],[13]   $ 0                  
Investment, Identifier [Axis]: NeuAG, LLC, Fertilizers & Agricultural Chemicals, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[19]               $ 54,677,000      
Investments at fair value [2],[3],[19]               $ 54,668,000      
Investment, basis spread, variable rate (as a percent) [2],[3],[19]               2.25% 2.25% 2.25%  
Investment interest rate [2],[3],[5],[19]               6.85% 6.85% 6.85%  
Principal [2],[3],[6],[19]               $ 55,783,000      
Investment, Identifier [Axis]: Next Holdco, LLC, Health Care Technology, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   (20,000) [7],[8],[9],[13]           (25,000) [1],[2],[3],[19]      
Investments at fair value   $ (17,000) [7],[8],[9],[13]           $ 0 [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.25% [7],[8],[9],[13] 5.25% [7],[8],[9],[13] 5.25% [7],[8],[9],[13] 5.25% [7],[8],[9],[13] 5.25% [7],[8],[9],[13] 5.25% [7],[8],[9],[13] 6.00% [1],[2],[3],[19] 6.00% [1],[2],[3],[19] 6.00% [1],[2],[3],[19]  
Principal   $ 0 [7],[8],[9],[11],[13]           $ 0 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: Next Holdco, LLC, Health Care Technology, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment, basis spread, variable rate (as a percent) [1],[2],[3],[19]               6.00% 6.00% 6.00%  
Investment, Identifier [Axis]: Next Holdco, LLC, Health Care Technology, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   19,480,000 [7],[9],[13]           $ 19,597,000 [2],[3],[19]      
Investments at fair value   $ 19,512,000 [7],[9],[13]           $ 19,895,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.25% [7],[9],[13] 5.25% [7],[9],[13] 5.25% [7],[9],[13] 5.25% [7],[9],[13] 5.25% [7],[9],[13] 5.25% [7],[9],[13] 6.00% [2],[3],[19] 6.00% [2],[3],[19] 6.00% [2],[3],[19]  
Investment interest rate   9.48% [7],[9],[10],[13] 9.48% [7],[9],[10],[13] 9.48% [7],[9],[10],[13] 9.48% [7],[9],[10],[13] 9.48% [7],[9],[10],[13] 9.48% [7],[9],[10],[13] 11.06% [2],[3],[5],[19] 11.06% [2],[3],[5],[19] 11.06% [2],[3],[5],[19]  
Principal   $ 19,695,000 [7],[9],[11],[13]           $ 19,895,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Next Holdco, LLC, Health Care Technology, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   7,696,000 [7],[9],[13]           (38,000) [1],[2],[3],[19]      
Investments at fair value   $ 7,693,000 [7],[9],[13]           0 [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent) [7],[9],[13]   5.25% 5.25% 5.25% 5.25% 5.25% 5.25%        
Investment interest rate [7],[9],[10],[13]   9.48% 9.48% 9.48% 9.48% 9.48% 9.48%        
Principal   $ 7,765,000 [7],[9],[11],[13]           0 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: Next Holdco, LLC, Health Care Technology, First Lien Term Loan 3                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[8],[9],[13]   (28,000)                  
Investments at fair value [7],[8],[9],[13]   $ (32,000)                  
Investment, basis spread, variable rate (as a percent) [7],[8],[9],[13]   5.25% 5.25% 5.25% 5.25% 5.25% 5.25%        
Principal [7],[8],[9],[11],[13]   $ 0                  
Investment, Identifier [Axis]: Nexus Buyer LLC, Specialized Finance, Second Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [9],[12],[13]   16,040,000                  
Investments at fair value [9],[12],[13]   $ 16,186,000                  
Investment, basis spread, variable rate (as a percent) [9],[12],[13]   5.75% 5.75% 5.75% 5.75% 5.75% 5.75%        
Investment interest rate [9],[10],[12],[13]   9.91% 9.91% 9.91% 9.91% 9.91% 9.91%        
Principal [9],[11],[12],[13]   $ 16,184,000                  
Investment, Identifier [Axis]: Northwoods Capital 25 Ltd, Multi-Sector Holdings, CLO Notes                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[15],[19]               682,000      
Investments at fair value [2],[15],[19]               $ 681,000      
Investment, basis spread, variable rate (as a percent) [2],[15],[19]               7.40% 7.40% 7.40%  
Investment interest rate [2],[5],[15],[19]               12.68% 12.68% 12.68%  
Principal [2],[6],[15],[19]               $ 700,000      
Investment, Identifier [Axis]: OCSI Glick JV LLC, Multi-Sector Holdings, Membership Interest                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00%  
Investment owned, at cost   $ 0 [8],[12],[20],[26],[27],[32],[33]           $ 0 [1],[15],[28],[29],[34],[35]      
Investments at fair value   $ 0 [8],[12],[20],[26],[27],[32],[33]           $ 0 [1],[15],[28],[29],[34],[35]     0
Investment owned, ownership (as a percent)   87.50% [8],[12],[20],[26],[27],[32],[33] 87.50% [8],[12],[20],[26],[27],[32],[33] 87.50% [8],[12],[20],[26],[27],[32],[33] 87.50% [8],[12],[20],[26],[27],[32],[33] 87.50% [8],[12],[20],[26],[27],[32],[33] 87.50% [8],[12],[20],[26],[27],[32],[33] 87.50% [1],[15],[28],[29],[34],[35] 87.50% [1],[15],[28],[29],[34],[35] 87.50% [1],[15],[28],[29],[34],[35]  
Investment, Identifier [Axis]: OCSI Glick JV LLC, Multi-Sector Holdings, Subordinated Debt                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   3.10% 3.10% 3.10% 3.10% 3.10% 3.10% 3.30% 3.30% 3.30%  
Investment owned, at cost   $ 53,123,000 [7],[8],[12],[13],[26],[27],[32]           $ 51,668,000 [1],[3],[15],[19],[28],[29],[34]      
Investments at fair value   $ 46,060,000 [7],[8],[12],[13],[26],[27],[32]           $ 48,896,000 [1],[3],[15],[19],[28],[29],[34]     50,017,000
Investment, basis spread, variable rate (as a percent)   4.50% [7],[8],[12],[13],[26],[27],[32] 4.50% [7],[8],[12],[13],[26],[27],[32] 4.50% [7],[8],[12],[13],[26],[27],[32] 4.50% [7],[8],[12],[13],[26],[27],[32] 4.50% [7],[8],[12],[13],[26],[27],[32] 4.50% [7],[8],[12],[13],[26],[27],[32] 4.50% [1],[3],[15],[19],[28],[29],[34] 4.50% [1],[3],[15],[19],[28],[29],[34] 4.50% [1],[3],[15],[19],[28],[29],[34]  
Investment interest rate   8.94% [7],[8],[10],[12],[13],[26],[27],[32] 8.94% [7],[8],[10],[12],[13],[26],[27],[32] 8.94% [7],[8],[10],[12],[13],[26],[27],[32] 8.94% [7],[8],[10],[12],[13],[26],[27],[32] 8.94% [7],[8],[10],[12],[13],[26],[27],[32] 8.94% [7],[8],[10],[12],[13],[26],[27],[32] 9.95% [1],[3],[5],[15],[19],[28],[29],[34] 9.95% [1],[3],[5],[15],[19],[28],[29],[34] 9.95% [1],[3],[5],[15],[19],[28],[29],[34]  
Principal   $ 58,349,000 [7],[8],[11],[12],[13],[26],[27],[32]           $ 58,349,000 [1],[3],[6],[15],[19],[28],[29],[34]      
Investment, Identifier [Axis]: OTG Management, LLC, Airport Services, Common Stock                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   22,330,000 [7],[9],[20]           22,330,000 [2],[3]      
Investments at fair value   $ 8,963,000 [7],[9],[20]           $ 13,562,000 [2],[3]      
Investment owned, balance (in shares) | shares   2,613,034 [7],[9],[20] 2,613,034 [7],[9],[20] 2,613,034 [7],[9],[20] 2,613,034 [7],[9],[20] 2,613,034 [7],[9],[20] 2,613,034 [7],[9],[20] 2,613,034 [2],[3] 2,613,034 [2],[3] 2,613,034 [2],[3]  
Investment, Identifier [Axis]: OTG Management, LLC, Airport Services, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   $ 12,645,000 [7],[9],[13]           $ 10,611,000 [2],[3],[19]      
Investments at fair value   $ 13,832,000 [7],[9],[13]           $ 12,070,000 [2],[3],[19]      
Investment, interest rate, paid in kind (as a percent)   12.73% [7],[9],[13] 12.73% [7],[9],[13] 12.73% [7],[9],[13] 12.73% [7],[9],[13] 12.73% [7],[9],[13] 12.73% [7],[9],[13] 14.62% [2],[3],[19] 14.62% [2],[3],[19] 14.62% [2],[3],[19]  
Investment, basis spread, variable rate (as a percent)   8.50% [7],[9],[13] 8.50% [7],[9],[13] 8.50% [7],[9],[13] 8.50% [7],[9],[13] 8.50% [7],[9],[13] 8.50% [7],[9],[13] 9.50% [2],[3],[19] 9.50% [2],[3],[19] 9.50% [2],[3],[19]  
Principal   $ 13,832,000 [7],[9],[11],[13]           $ 12,070,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Optimizely North America Inc., Application Software, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[8],[9],[12],[13]   (15,000)                  
Investments at fair value [7],[8],[9],[12],[13]   $ (15,000)                  
Investment, basis spread, variable rate (as a percent) [7],[8],[9],[12],[13]   5.00% 5.00% 5.00% 5.00% 5.00% 5.00%        
Principal [7],[8],[9],[11],[12],[13]   $ 0                  
Investment, Identifier [Axis]: Optimizely North America Inc., Application Software, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[12],[13]   11,231,000                  
Investments at fair value [7],[9],[12],[13]   $ 11,226,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[12],[13]   5.00% 5.00% 5.00% 5.00% 5.00% 5.00%        
Investment interest rate [7],[9],[10],[12],[13]   9.16% 9.16% 9.16% 9.16% 9.16% 9.16%        
Principal [7],[9],[11],[12],[13]   $ 11,329,000                  
Investment, Identifier [Axis]: Optimizely Sweden Holdings AB, Application Software, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[12],[13]   4,359,000                  
Investments at fair value [7],[9],[12],[13]   $ 4,713,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[12],[13]   5.25% 5.25% 5.25% 5.25% 5.25% 5.25%        
Investment interest rate [7],[9],[10],[12],[13]   7.15% 7.15% 7.15% 7.15% 7.15% 7.15%        
Principal | € [7],[9],[11],[12],[13]     € 4,048                
Investment, Identifier [Axis]: Optimizely Sweden Holdings AB, Application Software, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[12],[13]   $ 1,740,000                  
Investments at fair value [7],[9],[12],[13]   $ 1,800,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[12],[13]   5.50% 5.50% 5.50% 5.50% 5.50% 5.50%        
Investment interest rate [7],[9],[10],[12],[13]   9.47% 9.47% 9.47% 9.47% 9.47% 9.47%        
Principal | £ [7],[9],[11],[12],[13]       £ 1,349              
Investment, Identifier [Axis]: Oranje Holdco, Inc., Systems Software, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [1],[2],[3],[19]               (34,000)      
Investments at fair value [1],[2],[3],[19]               $ 0      
Investment, basis spread, variable rate (as a percent) [1],[2],[3],[19]               7.50% 7.50% 7.50%  
Principal [1],[2],[3],[6],[19]               $ 0      
Investment, Identifier [Axis]: Oranje Holdco, Inc., Systems Software, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[19]               14,956,000      
Investments at fair value [2],[3],[19]               $ 15,231,000      
Investment, basis spread, variable rate (as a percent) [2],[3],[19]               7.50% 7.50% 7.50%  
Investment interest rate [2],[3],[5],[19]               12.75% 12.75% 12.75%  
Principal [2],[3],[6],[19]               $ 15,231,000      
Investment, Identifier [Axis]: Oranje Holdco, Inc., Systems Software, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[19]               3,974,000      
Investments at fair value [2],[3],[19]               $ 3,986,000      
Investment, basis spread, variable rate (as a percent) [2],[3],[19]               7.25% 7.25% 7.25%  
Investment interest rate [2],[3],[5],[19]               12.50% 12.50% 12.50%  
Principal [2],[3],[6],[19]               $ 4,047,000      
Investment, Identifier [Axis]: PAI Financing Merger Sub LLC, Pharmaceuticals, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[8],[9],[13]   $ (71,000)                  
Investments at fair value [7],[8],[9],[13]   $ (78,000)                  
Investment, basis spread, variable rate (as a percent) [7],[8],[9],[13]   4.50% 4.50% 4.50% 4.50% 4.50% 4.50%        
Principal [7],[8],[9],[11],[13]   $ 0                  
Investment, Identifier [Axis]: PAI Financing Merger Sub LLC, Pharmaceuticals, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[13]   24,163,000                  
Investments at fair value [7],[9],[13]   $ 24,130,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[13]   4.50% 4.50% 4.50% 4.50% 4.50% 4.50%        
Investment interest rate [7],[9],[10],[13]   8.50% 8.50% 8.50% 8.50% 8.50% 8.50%        
Principal [7],[9],[11],[13]   $ 24,498,000                  
Investment, Identifier [Axis]: PPW Aero Buyer, Inc., Aerospace & Defense, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   (34,000) [7],[8],[9],[13]           710,000 [1],[2],[3],[19]      
Investments at fair value   $ (2,000) [7],[8],[9],[13]           $ 753,000 [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.50% [1],[2],[3],[19] 5.50% [1],[2],[3],[19] 5.50% [1],[2],[3],[19]  
Investment interest rate [1],[2],[3],[5],[19]               11.35% 11.35% 11.35%  
Principal   $ 0 [7],[8],[9],[11],[13]           $ 753,000 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: PPW Aero Buyer, Inc., Aerospace & Defense, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   10,379,000 [7],[9],[13]           10,471,000 [2],[3],[19]      
Investments at fair value   $ 10,676,000 [7],[9],[13]           $ 10,786,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.00% [7],[9],[13] 5.00% [7],[9],[13] 5.00% [7],[9],[13] 5.00% [7],[9],[13] 5.00% [7],[9],[13] 5.00% [7],[9],[13] 6.50% [2],[3],[19] 6.50% [2],[3],[19] 6.50% [2],[3],[19]  
Investment interest rate   9.00% [7],[9],[10],[13] 9.00% [7],[9],[10],[13] 9.00% [7],[9],[10],[13] 9.00% [7],[9],[10],[13] 9.00% [7],[9],[10],[13] 9.00% [7],[9],[10],[13] 11.35% [2],[3],[5],[19] 11.35% [2],[3],[5],[19] 11.35% [2],[3],[5],[19]  
Principal   $ 10,676,000 [7],[9],[11],[13]           $ 10,786,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: PPW Aero Buyer, Inc., Aerospace & Defense, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   13,962,000 [7],[9],[13]           5,057,000 [2],[3],[19]      
Investments at fair value   $ 13,987,000 [7],[9],[13]           $ 5,019,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.00% [7],[9],[13] 5.00% [7],[9],[13] 5.00% [7],[9],[13] 5.00% [7],[9],[13] 5.00% [7],[9],[13] 5.00% [7],[9],[13] 5.50% [2],[3],[19] 5.50% [2],[3],[19] 5.50% [2],[3],[19]  
Investment interest rate   9.00% [7],[9],[10],[13] 9.00% [7],[9],[10],[13] 9.00% [7],[9],[10],[13] 9.00% [7],[9],[10],[13] 9.00% [7],[9],[10],[13] 9.00% [7],[9],[10],[13] 10.10% [2],[3],[5],[19] 10.10% [2],[3],[5],[19] 10.10% [2],[3],[5],[19]  
Principal   $ 13,987,000 [7],[9],[11],[13]           $ 5,088,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: PPW Aero Buyer, Inc., Aerospace & Defense, First Lien Term Loan 3                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   (3,000) [7],[8],[9],[13]           (71,000) [1],[2],[3],[19]      
Investments at fair value   $ 0 [7],[8],[9],[13]           $ (128,000) [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.00% [7],[8],[9],[13] 5.50% [1],[2],[3],[19] 5.50% [1],[2],[3],[19] 5.50% [1],[2],[3],[19]  
Principal   $ 0 [7],[8],[9],[11],[13]           $ 0 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: PPW Aero Buyer, Inc., Aerospace & Defense, First Lien Term Loan 4                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[13]   3,895,000                  
Investments at fair value [7],[9],[13]   $ 3,935,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[13]   5.00% 5.00% 5.00% 5.00% 5.00% 5.00%        
Investment interest rate [7],[9],[10],[13]   9.00% 9.00% 9.00% 9.00% 9.00% 9.00%        
Principal [7],[9],[11],[13]   $ 3,935,000                  
Investment, Identifier [Axis]: PPW Aero Buyer, Inc., Aerospace & Defense, First Lien Term Loan 5                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[13]   3,587,000                  
Investments at fair value [7],[9],[13]   $ 3,587,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[13]   5.00% 5.00% 5.00% 5.00% 5.00% 5.00%        
Investment interest rate [7],[9],[10],[13]   9.00% 9.00% 9.00% 9.00% 9.00% 9.00%        
Principal [7],[9],[11],[13]   $ 3,588,000                  
Investment, Identifier [Axis]: PPW Aero Buyer, Inc., Aerospace & Defense, First Lien Term Loan 6                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[8],[9],[13]   (4,000)                  
Investments at fair value [7],[8],[9],[13]   $ (4,000)                  
Investment, basis spread, variable rate (as a percent) [7],[8],[9],[13]   5.00% 5.00% 5.00% 5.00% 5.00% 5.00%        
Principal [7],[8],[9],[11],[13]   $ 0                  
Investment, Identifier [Axis]: PRGX Global, Inc., Data Processing & Outsourced Services, Common Stock                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   0 [7],[9],[20]           109,000 [2],[3]      
Investments at fair value   $ 245,000 [7],[9],[20]           $ 415,000 [2],[3]      
Investment owned, balance (in shares) | shares   100,000 [7],[9],[20] 100,000 [7],[9],[20] 100,000 [7],[9],[20] 100,000 [7],[9],[20] 100,000 [7],[9],[20] 100,000 [7],[9],[20] 100,000 [2],[3] 100,000 [2],[3] 100,000 [2],[3]  
Investment, Identifier [Axis]: PRGX Global, Inc., Data Processing & Outsourced Services, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [1],[2],[3],[19]               $ (20,000)      
Investments at fair value [1],[2],[3],[19]               $ 0      
Investment, basis spread, variable rate (as a percent) [1],[2],[3],[19]               6.50% 6.50% 6.50%  
Principal [1],[2],[3],[6],[19]               $ 0      
Investment, Identifier [Axis]: PRGX Global, Inc., Data Processing & Outsourced Services, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[19]               25,994,000      
Investments at fair value [2],[3],[19]               $ 26,176,000      
Investment, basis spread, variable rate (as a percent) [2],[3],[19]               6.50% 6.50% 6.50%  
Investment interest rate [2],[3],[5],[19]               11.90% 11.90% 11.90%  
Principal [2],[3],[6],[19]               $ 26,176,000      
Investment, Identifier [Axis]: Park Blue CLO Ltd, Multi-Sector Holdings, CLO Notes                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [9],[12],[13]   $ 2,834,000                  
Investments at fair value [9],[12],[13]   $ 2,762,000                  
Investment, basis spread, variable rate (as a percent) [9],[12],[13]   7.09% 7.09% 7.09% 7.09% 7.09% 7.09%        
Investment interest rate [9],[10],[12],[13]   11.42% 11.42% 11.42% 11.42% 11.42% 11.42%        
Principal [9],[11],[12],[13]   $ 2,750,000                  
Investment, Identifier [Axis]: Paulus Holdings Public Limited Company, Health Care Technology, Preferred Equity                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[12],[20]   1,165,000                  
Investments at fair value [7],[9],[12],[20]   $ 1,787,000                  
Investment owned, balance (in shares) | shares [7],[9],[12],[20]   57,326 57,326 57,326 57,326 57,326 57,326        
Investment, Identifier [Axis]: Paulus Holdings Public Limited Company, Health Care Technology, Warrants                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[12],[20]   $ 256,000                  
Investments at fair value [7],[9],[12],[20]   $ 393,000                  
Investment owned, balance (in shares) | shares [7],[9],[12],[20]   12,593 12,593 12,593 12,593 12,593 12,593        
Investment, Identifier [Axis]: Performance Health Holdings, Inc., Health Care Distributors, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[19]               22,238,000      
Investments at fair value [2],[3],[19]               $ 22,375,000      
Investment, basis spread, variable rate (as a percent) [2],[3],[19]               5.75% 5.75% 5.75%  
Investment interest rate [2],[3],[5],[19]               11.11% 11.11% 11.11%  
Principal [2],[3],[6],[19]               $ 22,375,000      
Investment, Identifier [Axis]: PetVet Care Centers, LLC, Health Care Services, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   $ (94,000) [7],[8],[9],[13]           (117,000) [1],[2],[3],[19]      
Investments at fair value   $ (485,000) [7],[8],[9],[13]           $ (175,000) [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   6.00% [7],[8],[9],[13] 6.00% [7],[8],[9],[13] 6.00% [7],[8],[9],[13] 6.00% [7],[8],[9],[13] 6.00% [7],[8],[9],[13] 6.00% [7],[8],[9],[13] 6.00% [1],[2],[3],[19] 6.00% [1],[2],[3],[19] 6.00% [1],[2],[3],[19]  
Principal   $ 0 [7],[8],[9],[11],[13]           $ 0 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: PetVet Care Centers, LLC, Health Care Services, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   50,961,000 [7],[9],[13]           51,330,000 [2],[3],[19]      
Investments at fair value   $ 47,575,000 [7],[9],[13]           $ 50,912,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [7],[9],[13] 6.00% [2],[3],[19] 6.00% [2],[3],[19] 6.00% [2],[3],[19]  
Investment interest rate   10.16% [7],[9],[10],[13] 10.16% [7],[9],[10],[13] 10.16% [7],[9],[10],[13] 10.16% [7],[9],[10],[13] 10.16% [7],[9],[10],[13] 10.16% [7],[9],[10],[13] 10.85% [2],[3],[5],[19] 10.85% [2],[3],[5],[19] 10.85% [2],[3],[5],[19]  
Principal   $ 51,718,000 [7],[9],[11],[13]           $ 52,244,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: PetVet Care Centers, LLC, Health Care Services, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   (69,000) [7],[8],[9],[13]           (69,000) [1],[2],[3],[19]      
Investments at fair value   $ (498,000) [7],[8],[9],[13]           $ (106,000) [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   6.00% [7],[8],[9],[13] 6.00% [7],[8],[9],[13] 6.00% [7],[8],[9],[13] 6.00% [7],[8],[9],[13] 6.00% [7],[8],[9],[13] 6.00% [7],[8],[9],[13] 6.00% [1],[2],[3],[19] 6.00% [1],[2],[3],[19] 6.00% [1],[2],[3],[19]  
Principal   $ 0 [7],[8],[9],[11],[13]           $ 0 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: PetVet Care Centers, LLC, Health Care Services, Preferred Equity                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   4,440,000 [7],[9],[20]           4,440,000 [2],[3]      
Investments at fair value   $ 5,129,000 [7],[9],[20]           $ 5,022,000 [2],[3]      
Investment owned, balance (in shares) | shares   4,531 [7],[9],[20] 4,531 [7],[9],[20] 4,531 [7],[9],[20] 4,531 [7],[9],[20] 4,531 [7],[9],[20] 4,531 [7],[9],[20] 4,531 [2],[3] 4,531 [2],[3] 4,531 [2],[3]  
Investment, Identifier [Axis]: Phoenix Finance, Inc., Application Software, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[13]   $ 5,197,000                  
Investments at fair value [7],[9],[13]   $ 5,164,000                  
Investment, interest rate, paid in kind (as a percent) [7],[9],[13]   13.00% 13.00% 13.00% 13.00% 13.00% 13.00%        
Investment, basis spread, variable rate (as a percent) [7],[9],[13]   9.00% 9.00% 9.00% 9.00% 9.00% 9.00%        
Investment interest rate [7],[9],[10],[13]          
Principal [7],[9],[11],[13]   $ 5,324,000                  
Investment, Identifier [Axis]: Phoenix Finance, Inc., Application Software, Second Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[13]   9,526,000                  
Investments at fair value [7],[9],[13]   $ 8,633,000                  
Investment, interest rate, paid in kind (as a percent) [7],[9],[13]   11.65% 11.65% 11.65% 11.65% 11.65% 11.65%        
Investment, basis spread, variable rate (as a percent) [7],[9],[13]   7.50% 7.50% 7.50% 7.50% 7.50% 7.50%        
Investment interest rate [7],[9],[10],[13]          
Principal [7],[9],[11],[13]   $ 9,540,000                  
Investment, Identifier [Axis]: Pluralsight, LLC, Application Software, Common Stock                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   14,364,000 [7],[9],[20]           $ 14,364,000 [2],[3]      
Investments at fair value   $ 7,999,000 [7],[9],[20]           14,364,000 [2],[3]      
Principal [2],[3],[6]                    
Investment owned, balance (in shares) | shares   4,300,526 [7],[9],[20] 4,300,526 [7],[9],[20] 4,300,526 [7],[9],[20] 4,300,526 [7],[9],[20] 4,300,526 [7],[9],[20] 4,300,526 [7],[9],[20] 4,300,526 [2],[3] 4,300,526 [2],[3] 4,300,526 [2],[3]  
Investment, Identifier [Axis]: Pluralsight, LLC, Application Software, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   $ 0 [7],[8],[9],[13]           $ 0 [1],[2],[3],[19]      
Investments at fair value   $ 0 [7],[8],[9],[13]           $ 0 [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   4.50% [7],[8],[9],[13] 4.50% [7],[8],[9],[13] 4.50% [7],[8],[9],[13] 4.50% [7],[8],[9],[13] 4.50% [7],[8],[9],[13] 4.50% [7],[8],[9],[13] 4.50% [1],[2],[3],[19] 4.50% [1],[2],[3],[19] 4.50% [1],[2],[3],[19]  
Principal   $ 0 [7],[8],[9],[11],[13]           $ 0 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: Pluralsight, LLC, Application Software, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   5,029,000 [7],[9],[13]           4,965,000 [2],[3],[19]      
Investments at fair value   $ 5,029,000 [7],[9],[13]           $ 4,965,000 [2],[3],[19]      
Investment, interest rate, paid in kind (as a percent)   1.50% [7],[9],[13] 1.50% [7],[9],[13] 1.50% [7],[9],[13] 1.50% [7],[9],[13] 1.50% [7],[9],[13] 1.50% [7],[9],[13] 1.50% [2],[3],[19] 1.50% [2],[3],[19] 1.50% [2],[3],[19]  
Investment, basis spread, variable rate (as a percent)   4.50% [7],[9],[13] 4.50% [7],[9],[13] 4.50% [7],[9],[13] 4.50% [7],[9],[13] 4.50% [7],[9],[13] 4.50% [7],[9],[13] 4.50% [2],[3],[19] 4.50% [2],[3],[19] 4.50% [2],[3],[19]  
Investment interest rate   7.20% [7],[9],[10],[13] 7.20% [7],[9],[10],[13] 7.20% [7],[9],[10],[13] 7.20% [7],[9],[10],[13] 7.20% [7],[9],[10],[13] 7.20% [7],[9],[10],[13] 8.12% [2],[3],[5],[19] 8.12% [2],[3],[5],[19] 8.12% [2],[3],[5],[19]  
Principal   $ 5,029,000 [7],[9],[11],[13]           $ 4,965,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Pluralsight, LLC, Application Software, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   8,713,000 [7],[9],[13]           0 [1],[2],[3],[19]      
Investments at fair value   $ 8,713,000 [7],[9],[13]           $ 0 [1],[2],[3],[19]      
Investment, interest rate, paid in kind (as a percent) [7],[9],[13]   1.50% 1.50% 1.50% 1.50% 1.50% 1.50%        
Investment, basis spread, variable rate (as a percent)   4.50% [7],[9],[13] 4.50% [7],[9],[13] 4.50% [7],[9],[13] 4.50% [7],[9],[13] 4.50% [7],[9],[13] 4.50% [7],[9],[13] 4.50% [1],[2],[3],[19] 4.50% [1],[2],[3],[19] 4.50% [1],[2],[3],[19]  
Investment interest rate [7],[9],[10],[13]   7.20% 7.20% 7.20% 7.20% 7.20% 7.20%        
Principal   $ 8,713,000 [7],[9],[11],[13]           $ 0 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: Pluralsight, LLC, Application Software, First Lien Term Loan 3                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   14,578,000 [7],[9],[13]           8,601,000 [2],[3],[19]      
Investments at fair value   $ 14,578,000 [7],[9],[13]           $ 8,601,000 [2],[3],[19]      
Investment, interest rate, paid in kind (as a percent)   11.70% [7],[9],[13] 11.70% [7],[9],[13] 11.70% [7],[9],[13] 11.70% [7],[9],[13] 11.70% [7],[9],[13] 11.70% [7],[9],[13] 1.50% [2],[3],[19] 1.50% [2],[3],[19] 1.50% [2],[3],[19]  
Investment, basis spread, variable rate (as a percent)   7.50% [7],[9],[13] 7.50% [7],[9],[13] 7.50% [7],[9],[13] 7.50% [7],[9],[13] 7.50% [7],[9],[13] 7.50% [7],[9],[13] 4.50% [2],[3],[19] 4.50% [2],[3],[19] 4.50% [2],[3],[19]  
Investment interest rate [2],[3],[5],[19]               8.12% 8.12% 8.12%  
Principal   $ 14,578,000 [7],[9],[11],[13]           $ 8,601,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Pluralsight, LLC, Application Software, First Lien Term Loan 4                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   0 [7],[8],[9],[13]           12,902,000 [2],[3],[19]      
Investments at fair value   $ 0 [7],[8],[9],[13]           $ 12,902,000 [2],[3],[19]      
Investment, interest rate, paid in kind (as a percent) [2],[3],[19]               12.62% 12.62% 12.62%  
Investment, basis spread, variable rate (as a percent)   4.50% [7],[8],[9],[13] 4.50% [7],[8],[9],[13] 4.50% [7],[8],[9],[13] 4.50% [7],[8],[9],[13] 4.50% [7],[8],[9],[13] 4.50% [7],[8],[9],[13] 7.50% [2],[3],[19] 7.50% [2],[3],[19] 7.50% [2],[3],[19]  
Principal   $ 0 [7],[8],[9],[11],[13]           $ 12,902,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Poseidon Midco AB, Pharmaceuticals, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   14,005,000 [7],[9],[12],[13]           13,949,000 [2],[3],[15],[19]      
Investments at fair value   $ 15,120,000 [7],[9],[12],[13]           $ 13,994,000 [2],[3],[15],[19]      
Investment, basis spread, variable rate (as a percent)   5.25% [7],[9],[12],[13] 5.25% [7],[9],[12],[13] 5.25% [7],[9],[12],[13] 5.25% [7],[9],[12],[13] 5.25% [7],[9],[12],[13] 5.25% [7],[9],[12],[13] 5.50% [2],[3],[15],[19] 5.50% [2],[3],[15],[19] 5.50% [2],[3],[15],[19]  
Investment interest rate   7.31% [7],[9],[10],[12],[13] 7.31% [7],[9],[10],[12],[13] 7.31% [7],[9],[10],[12],[13] 7.31% [7],[9],[10],[12],[13] 7.31% [7],[9],[10],[12],[13] 7.31% [7],[9],[10],[12],[13] 8.97% [2],[3],[5],[15],[19] 8.97% [2],[3],[5],[15],[19] 8.97% [2],[3],[5],[15],[19]  
Principal | €     € 12,868 [7],[9],[11],[12],[13]           € 12,868 [2],[3],[6],[15],[19]    
Investment, Identifier [Axis]: Poseidon Midco AB, Pharmaceuticals, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   $ 5,798,000 [7],[8],[9],[12],[13]           $ 0 [1],[2],[3],[15],[19]      
Investments at fair value   $ 5,846,000 [7],[8],[9],[12],[13]           $ 0 [1],[2],[3],[15],[19]      
Investment, basis spread, variable rate (as a percent)   5.50% [7],[8],[9],[12],[13] 5.50% [7],[8],[9],[12],[13] 5.50% [7],[8],[9],[12],[13] 5.50% [7],[8],[9],[12],[13] 5.50% [7],[8],[9],[12],[13] 5.50% [7],[8],[9],[12],[13] 5.50% [1],[2],[3],[15],[19] 5.50% [1],[2],[3],[15],[19] 5.50% [1],[2],[3],[15],[19]  
Investment interest rate [7],[8],[9],[10],[12],[13]   9.75% 9.75% 9.75% 9.75% 9.75% 9.75%        
Principal   $ 5,846,000 [7],[8],[9],[11],[12],[13]           $ 0 [1],[2],[3],[6],[15],[19]      
Investment, Identifier [Axis]: Poseidon Midco AB, Pharmaceuticals, First Lien Term Loan 3                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[8],[9],[12],[13]   (49,000)                  
Investments at fair value [7],[8],[9],[12],[13]   $ (51,000)                  
Investment, basis spread, variable rate (as a percent) [7],[8],[9],[12],[13]   5.00% 5.00% 5.00% 5.00% 5.00% 5.00%        
Principal | € [7],[8],[9],[11],[12],[13]     € 0                
Investment, Identifier [Axis]: Profrac Holdings II, LLC, Industrial Machinery & Supplies & Components, First Lien Floating Rate Bond                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   $ 23,480,000 [7],[9],[12],[13]           26,376,000 [2],[3],[15],[19]      
Investments at fair value   $ 23,466,000 [7],[9],[12],[13]           $ 26,410,000 [2],[3],[15],[19]      
Investment, basis spread, variable rate (as a percent)   7.25% [7],[9],[12],[13] 7.25% [7],[9],[12],[13] 7.25% [7],[9],[12],[13] 7.25% [7],[9],[12],[13] 7.25% [7],[9],[12],[13] 7.25% [7],[9],[12],[13] 7.25% [2],[3],[15],[19] 7.25% [2],[3],[15],[19] 7.25% [2],[3],[15],[19]  
Investment interest rate   11.23% [7],[9],[10],[12],[13] 11.23% [7],[9],[10],[12],[13] 11.23% [7],[9],[10],[12],[13] 11.23% [7],[9],[10],[12],[13] 11.23% [7],[9],[10],[12],[13] 11.23% [7],[9],[10],[12],[13] 11.84% [2],[3],[5],[15],[19] 11.84% [2],[3],[5],[15],[19] 11.84% [2],[3],[5],[15],[19]  
Principal   $ 23,717,000 [7],[9],[11],[12],[13]           $ 26,642,000 [2],[3],[6],[15],[19]      
Investment, Identifier [Axis]: Protein For Pets Opco, LLC, Packaged Foods & Meats, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   539,000 [7],[8],[9],[13]           (39,000) [1],[2],[3],[19]      
Investments at fair value   $ 528,000 [7],[8],[9],[13]           $ (41,000) [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.25% [7],[8],[9],[13] 5.25% [7],[8],[9],[13] 5.25% [7],[8],[9],[13] 5.25% [7],[8],[9],[13] 5.25% [7],[8],[9],[13] 5.25% [7],[8],[9],[13] 5.25% [1],[2],[3],[19] 5.25% [1],[2],[3],[19] 5.25% [1],[2],[3],[19]  
Investment interest rate [7],[8],[9],[10],[13]   9.41% 9.41% 9.41% 9.41% 9.41% 9.41%        
Principal   $ 572,000 [7],[8],[9],[11],[13]           $ 0 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: Protein For Pets Opco, LLC, Packaged Foods & Meats, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   19,764,000 [7],[9],[13]           19,902,000 [2],[3],[19]      
Investments at fair value   $ 19,655,000 [7],[9],[13]           $ 19,887,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.25% [7],[9],[13] 5.25% [7],[9],[13] 5.25% [7],[9],[13] 5.25% [7],[9],[13] 5.25% [7],[9],[13] 5.25% [7],[9],[13] 5.25% [2],[3],[19] 5.25% [2],[3],[19] 5.25% [2],[3],[19]  
Investment interest rate   9.41% [7],[9],[10],[13] 9.41% [7],[9],[10],[13] 9.41% [7],[9],[10],[13] 9.41% [7],[9],[10],[13] 9.41% [7],[9],[10],[13] 9.41% [7],[9],[10],[13] 10.10% [2],[3],[5],[19] 10.10% [2],[3],[5],[19] 10.10% [2],[3],[5],[19]  
Principal   $ 20,071,000 [7],[9],[11],[13]           $ 20,274,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Quantum Bidco Limited, Food Distributors, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[15],[19]               12,092,000      
Investments at fair value [2],[3],[15],[19]               $ 12,769,000      
Investment, basis spread, variable rate (as a percent) [2],[3],[15],[19]               5.50% 5.50% 5.50%  
Investment interest rate [2],[3],[5],[15],[19]               10.73% 10.73% 10.73%  
Principal | £ [2],[3],[6],[15],[19]                   £ 9,739  
Investment, Identifier [Axis]: Quantum Bidco Limited, Food Distributors, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [1],[2],[3],[15],[19]               $ 2,547,000      
Investments at fair value [1],[2],[3],[15],[19]               $ 2,715,000      
Investment, basis spread, variable rate (as a percent) [1],[2],[3],[15],[19]               5.50% 5.50% 5.50%  
Investment interest rate [1],[2],[3],[5],[15],[19]               10.70% 10.70% 10.70%  
Principal [1],[2],[3],[6],[15],[19]               $ 2,123,000      
Investment, Identifier [Axis]: QuorumLabs, Inc., Application Software, Preferred Equity                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3]               375,000      
Investments at fair value [2],[3]               $ 0      
Investment owned, balance (in shares) | shares [2],[3]               64,887,669 64,887,669 64,887,669  
Investment, Identifier [Axis]: Renaissance Holding Corp., Education Services, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [9],[13]   12,335,000                  
Investments at fair value [9],[13]   $ 11,205,000                  
Investment, basis spread, variable rate (as a percent) [9],[13]   4.00% 4.00% 4.00% 4.00% 4.00% 4.00%        
Investment interest rate [9],[10],[13]   8.16% 8.16% 8.16% 8.16% 8.16% 8.16%        
Principal [9],[11],[13]   $ 12,890,000                  
Investment, Identifier [Axis]: RumbleOn, Inc., Automotive Retail, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   7,998,000 [7],[9],[12],[13]           $ 8,629,000 [2],[3],[15],[19]      
Investments at fair value   $ 7,698,000 [7],[9],[12],[13]           $ 8,334,000 [2],[3],[15],[19]      
Investment, interest rate, paid in kind (as a percent)   1.00% [7],[9],[12],[13] 1.00% [7],[9],[12],[13] 1.00% [7],[9],[12],[13] 1.00% [7],[9],[12],[13] 1.00% [7],[9],[12],[13] 1.00% [7],[9],[12],[13] 1.00% [2],[3],[15],[19] 1.00% [2],[3],[15],[19] 1.00% [2],[3],[15],[19]  
Investment, basis spread, variable rate (as a percent)   8.25% [7],[9],[12],[13] 8.25% [7],[9],[12],[13] 8.25% [7],[9],[12],[13] 8.25% [7],[9],[12],[13] 8.25% [7],[9],[12],[13] 8.25% [7],[9],[12],[13] 8.25% [2],[3],[15],[19] 8.25% [2],[3],[15],[19] 8.25% [2],[3],[15],[19]  
Investment interest rate   11.82% [7],[9],[10],[12],[13] 11.82% [7],[9],[10],[12],[13] 11.82% [7],[9],[10],[12],[13] 11.82% [7],[9],[10],[12],[13] 11.82% [7],[9],[10],[12],[13] 11.82% [7],[9],[10],[12],[13] 12.77% [2],[3],[5],[15],[19] 12.77% [2],[3],[5],[15],[19] 12.77% [2],[3],[5],[15],[19]  
Principal   $ 8,146,000 [7],[9],[11],[12],[13]           $ 8,819,000 [2],[3],[6],[15],[19]      
Investment, Identifier [Axis]: RumbleOn, Inc., Automotive Retail, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   26,502,000 [7],[9],[12],[13]           28,603,000 [2],[3],[15],[19]      
Investments at fair value   $ 25,508,000 [7],[9],[12],[13]           $ 27,615,000 [2],[3],[15],[19]      
Investment, interest rate, paid in kind (as a percent)   1.00% [7],[9],[12],[13] 1.00% [7],[9],[12],[13] 1.00% [7],[9],[12],[13] 1.00% [7],[9],[12],[13] 1.00% [7],[9],[12],[13] 1.00% [7],[9],[12],[13] 1.00% [2],[3],[15],[19] 1.00% [2],[3],[15],[19] 1.00% [2],[3],[15],[19]  
Investment, basis spread, variable rate (as a percent)   8.25% [7],[9],[12],[13] 8.25% [7],[9],[12],[13] 8.25% [7],[9],[12],[13] 8.25% [7],[9],[12],[13] 8.25% [7],[9],[12],[13] 8.25% [7],[9],[12],[13] 8.25% [2],[3],[15],[19] 8.25% [2],[3],[15],[19] 8.25% [2],[3],[15],[19]  
Investment interest rate   11.82% [7],[9],[10],[12],[13] 11.82% [7],[9],[10],[12],[13] 11.82% [7],[9],[10],[12],[13] 11.82% [7],[9],[10],[12],[13] 11.82% [7],[9],[10],[12],[13] 11.82% [7],[9],[10],[12],[13] 12.77% [2],[3],[5],[15],[19] 12.77% [2],[3],[5],[15],[19] 12.77% [2],[3],[5],[15],[19]  
Principal   $ 26,993,000 [7],[9],[11],[12],[13]           $ 29,223,000 [2],[3],[6],[15],[19]      
Investment, Identifier [Axis]: RumbleOn, Inc., Automotive Retail, Warrants                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   1,202,000 [7],[9],[12],[20]           1,202,000 [2],[3],[15]      
Investments at fair value   $ 644,000 [7],[9],[12],[20]           $ 470,000 [2],[3],[15]      
Investment owned, balance (in shares) | shares   204,454 [7],[9],[12],[20] 204,454 [7],[9],[12],[20] 204,454 [7],[9],[12],[20] 204,454 [7],[9],[12],[20] 204,454 [7],[9],[12],[20] 204,454 [7],[9],[12],[20] 204,454 [2],[3],[15] 204,454 [2],[3],[15] 204,454 [2],[3],[15]  
Investment, Identifier [Axis]: SIO2 Medical Products, Inc., Metal, Glass & Plastic Containers, Common Stock                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 1.40% 1.40% 1.40%  
Investment owned, at cost   $ 40,094,000 [7],[20],[26],[27]           $ 40,093,000 [3],[28],[29]      
Investments at fair value   $ 0 [7],[20],[26],[27]           $ 20,802,000 [3],[28],[29]     36,226,000
Investment owned, balance (in shares) | shares   1,184,630 [7],[20],[26],[27] 1,184,630 [7],[20],[26],[27] 1,184,630 [7],[20],[26],[27] 1,184,630 [7],[20],[26],[27] 1,184,630 [7],[20],[26],[27] 1,184,630 [7],[20],[26],[27] 1,184,630 [3],[28],[29] 1,184,630 [3],[28],[29] 1,184,630 [3],[28],[29]  
Investment, Identifier [Axis]: SIO2 Medical Products, Inc., Metal, Glass & Plastic Containers, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   0.10% 0.10% 0.10% 0.10% 0.10% 0.10% 0.20% 0.20% 0.20%  
Investment owned, at cost   $ 3,346,000 [7],[17],[26],[27]           $ 3,243,000 [3],[28],[29]      
Investments at fair value   $ 1,130,000 [7],[17],[26],[27]           $ 3,332,000 [3],[28],[29]     0
Investment, interest rate, paid in kind (as a percent)   12.00% [7],[17],[26],[27] 12.00% [7],[17],[26],[27] 12.00% [7],[17],[26],[27] 12.00% [7],[17],[26],[27] 12.00% [7],[17],[26],[27] 12.00% [7],[17],[26],[27] 12.00% [3],[28],[29] 12.00% [3],[28],[29] 12.00% [3],[28],[29]  
Principal   $ 3,756,000 [7],[11],[17],[26],[27]           $ 3,332,000 [3],[6],[28],[29]      
Investment, Identifier [Axis]: SIO2 Medical Products, Inc., Metal, Glass & Plastic Containers, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   0.40% 0.40% 0.40% 0.40% 0.40% 0.40% 1.20% 1.20% 1.20%  
Investment owned, at cost   $ 17,103,000 [7],[17],[26],[27]           $ 16,339,000 [3],[28],[29]      
Investments at fair value   $ 6,074,000 [7],[17],[26],[27]           $ 17,907,000 [3],[28],[29]     15,874,000
Investment, interest rate, paid in kind (as a percent)   12.00% [7],[17],[26],[27] 12.00% [7],[17],[26],[27] 12.00% [7],[17],[26],[27] 12.00% [7],[17],[26],[27] 12.00% [7],[17],[26],[27] 12.00% [7],[17],[26],[27] 12.00% [3],[28],[29] 12.00% [3],[28],[29] 12.00% [3],[28],[29]  
Principal   $ 20,187,000 [7],[11],[17],[26],[27]           $ 17,907,000 [3],[6],[28],[29]      
Investment, Identifier [Axis]: SIO2 Medical Products, Inc., Metal, Glass & Plastic Containers, First Lien Term Loan 3                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   0.10% 0.10% 0.10% 0.10% 0.10% 0.10% 0.20% 0.20% 0.20%  
Investment owned, at cost   $ 3,643,000 [7],[17],[26],[27]           $ 3,500,000 [3],[28],[29]      
Investments at fair value   $ 1,204,000 [7],[17],[26],[27]           $ 3,550,000 [3],[28],[29]     1,359,000
Investment, interest rate, paid in kind (as a percent)   12.00% [7],[17],[26],[27] 12.00% [7],[17],[26],[27] 12.00% [7],[17],[26],[27] 12.00% [7],[17],[26],[27] 12.00% [7],[17],[26],[27] 12.00% [7],[17],[26],[27] 12.00% [3],[28],[29] 12.00% [3],[28],[29] 12.00% [3],[28],[29]  
Principal   $ 4,002,000 [7],[11],[17],[26],[27]           $ 3,550,000 [3],[6],[28],[29]      
Investment, Identifier [Axis]: SIO2 Medical Products, Inc., Metal, Glass & Plastic Containers, First Lien Term Loan 4                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.10% 0.10% 0.10%  
Investment owned, at cost   $ 1,648,000 [7],[17],[26],[27]           $ 1,594,000 [3],[28],[29]      
Investments at fair value   $ 543,000 [7],[17],[26],[27]           $ 1,600,000 [3],[28],[29]     0
Investment, interest rate, paid in kind (as a percent)   12.00% [7],[17],[26],[27] 12.00% [7],[17],[26],[27] 12.00% [7],[17],[26],[27] 12.00% [7],[17],[26],[27] 12.00% [7],[17],[26],[27] 12.00% [7],[17],[26],[27] 12.00% [3],[28],[29] 12.00% [3],[28],[29] 12.00% [3],[28],[29]  
Principal   $ 1,804,000 [7],[11],[17],[26],[27]           $ 1,600,000 [3],[6],[28],[29]      
Investment, Identifier [Axis]: SIO2 Medical Products, Inc., Metal, Glass & Plastic Containers, First Lien Term Loan 5                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00%  
Investment owned, at cost   $ 1,576,000 [7],[17],[26],[27]           $ 0 [1],[3],[28],[29]      
Investments at fair value   $ 528,000 [7],[17],[26],[27]           $ 0 [1],[3],[28],[29]     0
Investment, interest rate, paid in kind (as a percent)   12.00% [7],[17],[26],[27] 12.00% [7],[17],[26],[27] 12.00% [7],[17],[26],[27] 12.00% [7],[17],[26],[27] 12.00% [7],[17],[26],[27] 12.00% [7],[17],[26],[27] 12.00% [1],[3],[28],[29] 12.00% [1],[3],[28],[29] 12.00% [1],[3],[28],[29]  
Principal   $ 1,755,000 [7],[11],[17],[26],[27]           $ 0 [1],[3],[6],[28],[29]      
Investment, Identifier [Axis]: SIO2 Medical Products, Inc., Metal, Glass & Plastic Containers, First Lien Term Loan 6                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   0.10% 0.10% 0.10% 0.10% 0.10% 0.10%        
Investment owned, at cost [7],[17],[26],[27]   $ 776,000                  
Investments at fair value   $ 842,000 [7],[17],[26],[27]           0      
Investment, interest rate, paid in kind (as a percent) [7],[17],[26],[27]   12.00% 12.00% 12.00% 12.00% 12.00% 12.00%        
Principal [7],[11],[17],[26],[27]   $ 842,000                  
Investment, Identifier [Axis]: SIO2 Medical Products, Inc., Metal, Glass & Plastic Containers, First Lien Term Loan 7                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   0.10% 0.10% 0.10% 0.10% 0.10% 0.10%        
Investment owned, at cost [7],[17],[26],[27]   $ 776,000                  
Investments at fair value   $ 825,000 [7],[17],[26],[27]           0      
Investment, interest rate, paid in kind (as a percent) [7],[17],[26],[27]   12.00% 12.00% 12.00% 12.00% 12.00% 12.00%        
Principal [7],[11],[17],[26],[27]   $ 825,000                  
Investment, Identifier [Axis]: SIO2 Medical Products, Inc., Metal, Glass & Plastic Containers, First Lien Term Loan 8                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   0.00% 0.00% 0.00% 0.00% 0.00% 0.00%        
Investment owned, at cost [7],[8],[17],[26],[27]   $ 543,000                  
Investments at fair value   $ 563,000 [7],[8],[17],[26],[27]           $ 0      
Investment, interest rate, paid in kind (as a percent) [7],[8],[17],[26],[27]   12.00% 12.00% 12.00% 12.00% 12.00% 12.00%        
Principal [7],[8],[11],[17],[26],[27]   $ 563,000                  
Investment, Identifier [Axis]: SIO2 Medical Products, Inc., Metal, Glass & Plastic Containers, Warrants                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00%  
Investment owned, at cost   $ 0 [7],[20],[26],[27]           $ 0 [3],[28],[29]      
Investments at fair value   $ 0 [7],[20],[26],[27]           $ 0 [3],[28],[29]     0
Investment owned, balance (in shares) | shares   66,686 [7],[20],[26],[27] 66,686 [7],[20],[26],[27] 66,686 [7],[20],[26],[27] 66,686 [7],[20],[26],[27] 66,686 [7],[20],[26],[27] 66,686 [7],[20],[26],[27] 66,686 [3],[28],[29] 66,686 [3],[28],[29] 66,686 [3],[28],[29]  
Investment, Identifier [Axis]: SLF JV 1 Notes                      
Schedule of Investments [Line Items]                      
Investment, basis spread, variable rate (as a percent)   7.00% 7.00% 7.00% 7.00% 7.00% 7.00%        
Investment, Identifier [Axis]: SM Wellness Holdings, Inc., Health Care Services, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[19]               $ 3,908,000      
Investments at fair value [2],[3],[19]               $ 4,318,000      
Investment, basis spread, variable rate (as a percent) [2],[3],[19]               4.50% 4.50% 4.50%  
Investment interest rate [2],[3],[5],[19]               10.01% 10.01% 10.01%  
Principal [2],[3],[6],[19]               $ 4,406,000      
Investment, Identifier [Axis]: SM Wellness Holdings, Inc., Health Care Services, Second Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[19]               11,367,000      
Investments at fair value [2],[3],[19]               $ 11,432,000      
Investment, basis spread, variable rate (as a percent) [2],[3],[19]               8.00% 8.00% 8.00%  
Investment interest rate [2],[3],[5],[19]               13.51% 13.51% 13.51%  
Principal [2],[3],[6],[19]               $ 12,034,000      
Investment, Identifier [Axis]: SVP-Singer Holdings Inc., Home Furnishings, Common Stock                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[20]   $ 2,463,000                  
Investments at fair value [7],[9],[20]   $ 2,463,000                  
Investment owned, balance (in shares) | shares [7],[9],[20]   418,881 418,881 418,881 418,881 418,881 418,881        
Investment, Identifier [Axis]: SVP-Singer Holdings Inc., Home Furnishings, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[18],[19]               23,170,000      
Investments at fair value [2],[3],[18],[19]               $ 8,444,000      
Investment, basis spread, variable rate (as a percent) [2],[3],[18],[19]               8.25% 8.25% 8.25%  
Principal [2],[3],[6],[18],[19]               $ 28,146,000      
Investment, Identifier [Axis]: SVP-Singer Holdings Inc., Home Furnishings, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [1],[2],[3],[18],[19]               932,000      
Investments at fair value [1],[2],[3],[18],[19]               $ 932,000      
Investment, basis spread, variable rate (as a percent) [1],[2],[3],[18],[19]               9.75% 9.75% 9.75%  
Principal [1],[2],[3],[6],[18],[19]               $ 932,000      
Investment, Identifier [Axis]: Salus Workers' Compensation, LLC, Diversified Financial Services, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [1],[2],[3],[19]               (63,000)      
Investments at fair value [1],[2],[3],[19]               $ (140,000)      
Investment, basis spread, variable rate (as a percent) [1],[2],[3],[19]               10.00% 10.00% 10.00%  
Principal [1],[2],[3],[6],[19]               $ 0      
Investment, Identifier [Axis]: Salus Workers' Compensation, LLC, Diversified Financial Services, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[19]               21,656,000      
Investments at fair value [2],[3],[19]               $ 21,112,000      
Investment, basis spread, variable rate (as a percent) [2],[3],[19]               10.00% 10.00% 10.00%  
Investment interest rate [2],[3],[5],[19]               14.85% 14.85% 14.85%  
Principal [2],[3],[6],[19]               $ 22,107,000      
Investment, Identifier [Axis]: Salus Workers' Compensation, LLC, Diversified Financial Services, Warrants                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3]               327,000      
Investments at fair value [2],[3]               $ 89,000      
Investment owned, balance (in shares) | shares [2],[3]               991,019 991,019 991,019  
Investment, Identifier [Axis]: Saratoga, Diversified Financial Services, Credit Linked Note                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   $ 22,821,000 [7],[9],[12],[13]           $ 24,478,000 [2],[3],[15],[19],[36]      
Investments at fair value   $ 23,261,000 [7],[9],[12],[13]           $ 24,478,000 [2],[3],[15],[19],[36]      
Investment, basis spread, variable rate (as a percent)   5.33% [7],[9],[12],[13] 5.33% [7],[9],[12],[13] 5.33% [7],[9],[12],[13] 5.33% [7],[9],[12],[13] 5.33% [7],[9],[12],[13] 5.33% [7],[9],[12],[13] 5.33% [2],[3],[15],[19],[36] 5.33% [2],[3],[15],[19],[36] 5.33% [2],[3],[15],[19],[36]  
Investment interest rate   9.86% [7],[9],[10],[12],[13] 9.86% [7],[9],[10],[12],[13] 9.86% [7],[9],[10],[12],[13] 9.86% [7],[9],[10],[12],[13] 9.86% [7],[9],[10],[12],[13] 9.86% [7],[9],[10],[12],[13] 10.18% [2],[3],[5],[15],[19],[36] 10.18% [2],[3],[5],[15],[19],[36] 10.18% [2],[3],[5],[15],[19],[36]  
Principal   $ 22,917,000 [7],[9],[11],[12],[13]           $ 24,500,000 [2],[3],[6],[15],[19],[36]      
Investment, Identifier [Axis]: Scilex Holding Co, Biotechnology, Common Stock                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[15]               78,000      
Investments at fair value [2],[15]               $ 9,000      
Investment owned, balance (in shares) | shares [2],[15]               9,307 9,307 9,307  
Investment, Identifier [Axis]: Scilex Holding Co, Pharmaceuticals, Common Stock                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [9],[12],[20]   78,000                  
Investments at fair value [9],[12],[20]   $ 5,000                  
Investment owned, balance (in shares) | shares [9],[12],[20]   274 274 274 274 274 274        
Investment, Identifier [Axis]: Secure Acquisition Inc., Paper & Plastic Packaging Products & Materials, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[19]               $ 14,925,000      
Investments at fair value [2],[19]               $ 15,009,000      
Investment, basis spread, variable rate (as a percent) [2],[19]               4.25% 4.25% 4.25%  
Investment interest rate [2],[5],[19]               8.85% 8.85% 8.85%  
Principal [2],[6],[19]               $ 14,963,000      
Investment, Identifier [Axis]: Senior Loan Fund JV I, LLC, Multi-Sector Holdings, Membership Interest                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   0.80% 0.80% 0.80% 0.80% 0.80% 0.80% 1.50% 1.50% 1.50%  
Investment owned, at cost   $ 54,791,000 [8],[12],[20],[25],[26],[27],[32],[33]           $ 54,791,000 [1],[15],[28],[29],[31],[34],[35]      
Investments at fair value   $ 11,946,000 [8],[12],[20],[25],[26],[27],[32],[33]           $ 22,541,000 [1],[15],[28],[29],[31],[34],[35]     28,878,000
Investment owned, ownership (as a percent)   87.50% [8],[12],[20],[25],[26],[27],[32],[33] 87.50% [8],[12],[20],[25],[26],[27],[32],[33] 87.50% [8],[12],[20],[25],[26],[27],[32],[33] 87.50% [8],[12],[20],[25],[26],[27],[32],[33] 87.50% [8],[12],[20],[25],[26],[27],[32],[33] 87.50% [8],[12],[20],[25],[26],[27],[32],[33] 87.50% [1],[15],[28],[29],[31],[34],[35] 87.50% [1],[15],[28],[29],[31],[34],[35] 87.50% [1],[15],[28],[29],[31],[34],[35]  
Investment, Identifier [Axis]: Senior Loan Fund JV I, LLC, Multi-Sector Holdings, Subordinated Debt                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   7.70% 7.70% 7.70% 7.70% 7.70% 7.70% 7.60% 7.60% 7.60%  
Investment owned, at cost   $ 112,656,000 [7],[8],[12],[13],[26],[27],[32]           $ 112,656,000 [1],[3],[15],[19],[28],[29],[34]      
Investments at fair value   $ 112,656,000 [7],[8],[12],[13],[26],[27],[32]           $ 112,656,000 [1],[3],[15],[19],[28],[29],[34]     112,656,000
Investment, basis spread, variable rate (as a percent)   7.00% [7],[8],[12],[13],[26],[27],[32] 7.00% [7],[8],[12],[13],[26],[27],[32] 7.00% [7],[8],[12],[13],[26],[27],[32] 7.00% [7],[8],[12],[13],[26],[27],[32] 7.00% [7],[8],[12],[13],[26],[27],[32] 7.00% [7],[8],[12],[13],[26],[27],[32] 7.00% [1],[3],[15],[19],[28],[29],[34] 7.00% [1],[3],[15],[19],[28],[29],[34] 7.00% [1],[3],[15],[19],[28],[29],[34]  
Investment interest rate   11.44% [7],[8],[10],[12],[13],[26],[27],[32] 11.44% [7],[8],[10],[12],[13],[26],[27],[32] 11.44% [7],[8],[10],[12],[13],[26],[27],[32] 11.44% [7],[8],[10],[12],[13],[26],[27],[32] 11.44% [7],[8],[10],[12],[13],[26],[27],[32] 11.44% [7],[8],[10],[12],[13],[26],[27],[32] 12.45% [1],[3],[5],[15],[19],[28],[29],[34] 12.45% [1],[3],[5],[15],[19],[28],[29],[34] 12.45% [1],[3],[5],[15],[19],[28],[29],[34]  
Principal   $ 112,656,000 [7],[8],[11],[12],[13],[26],[27],[32]           $ 112,656,000 [1],[3],[6],[15],[19],[28],[29],[34]      
Investment, Identifier [Axis]: Seres Therapeutics, Inc., Biotechnology, Warrants                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   182,000 [7],[9],[12],[20]           182,000 [2],[3],[15]      
Investments at fair value   $ 25,000 [7],[9],[12],[20]           $ 29,000 [2],[3],[15]      
Investment owned, balance (in shares) | shares   2,911 [7],[9],[12],[20] 2,911 [7],[9],[12],[20] 2,911 [7],[9],[12],[20] 2,911 [7],[9],[12],[20] 2,911 [7],[9],[12],[20] 2,911 [7],[9],[12],[20] 58,210 [2],[3],[15] 58,210 [2],[3],[15] 58,210 [2],[3],[15]  
Investment, Identifier [Axis]: Sierra Enterprises, LLC, Soft Drinks & Non-alcoholic Beverages, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[8],[9],[13]   $ (20,000)                  
Investments at fair value [7],[8],[9],[13]   $ (19,000)                  
Investment, basis spread, variable rate (as a percent) [7],[8],[9],[13]   6.00% 6.00% 6.00% 6.00% 6.00% 6.00%        
Principal [7],[8],[9],[11],[13]   $ 0                  
Investment, Identifier [Axis]: Sierra Enterprises, LLC, Soft Drinks & Non-alcoholic Beverages, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[13]   11,064,000                  
Investments at fair value [7],[9],[13]   $ 11,072,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[13]   6.00% 6.00% 6.00% 6.00% 6.00% 6.00%        
Investment interest rate [7],[9],[10],[13]   10.00% 10.00% 10.00% 10.00% 10.00% 10.00%        
Principal [7],[9],[11],[13]   $ 11,220,000                  
Investment, Identifier [Axis]: Sorenson Communications, LLC, Communications Equipment, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   (77,000) [7],[8],[9],[13]           $ (98,000) [1],[2],[3],[19]      
Investments at fair value   $ (84,000) [7],[8],[9],[13]           $ (89,000) [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.75% [7],[8],[9],[13] 5.75% [7],[8],[9],[13] 5.75% [7],[8],[9],[13] 5.75% [7],[8],[9],[13] 5.75% [7],[8],[9],[13] 5.75% [7],[8],[9],[13] 5.75% [1],[2],[3],[19] 5.75% [1],[2],[3],[19] 5.75% [1],[2],[3],[19]  
Principal   $ 0 [7],[8],[9],[11],[13]           $ 0 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: Sorenson Communications, LLC, Communications Equipment, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   43,456,000 [7],[9],[13]           46,862,000 [2],[3],[19]      
Investments at fair value   $ 43,377,000 [7],[9],[13]           $ 46,947,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.75% [7],[9],[13] 5.75% [7],[9],[13] 5.75% [7],[9],[13] 5.75% [7],[9],[13] 5.75% [7],[9],[13] 5.75% [7],[9],[13] 5.75% [2],[3],[19] 5.75% [2],[3],[19] 5.75% [2],[3],[19]  
Investment interest rate   9.91% [7],[9],[10],[13] 9.91% [7],[9],[10],[13] 9.91% [7],[9],[10],[13] 9.91% [7],[9],[10],[13] 9.91% [7],[9],[10],[13] 9.91% [7],[9],[10],[13] 10.60% [2],[3],[5],[19] 10.60% [2],[3],[5],[19] 10.60% [2],[3],[5],[19]  
Principal   $ 44,082,000 [7],[9],[11],[13]           $ 47,730,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Sorrento Therapeutics, Inc., Biotechnology, Common Stock                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   139,000 [9],[12],[20]           139,000 [2],[15]      
Investments at fair value   $ 0 [9],[12],[20]           $ 0 [2],[15]      
Investment owned, balance (in shares) | shares   66,000 [9],[12],[20] 66,000 [9],[12],[20] 66,000 [9],[12],[20] 66,000 [9],[12],[20] 66,000 [9],[12],[20] 66,000 [9],[12],[20] 66,000 [2],[15] 66,000 [2],[15] 66,000 [2],[15]  
Investment, Identifier [Axis]: Spanx, LLC, Apparel Retail, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   $ 802,000 [7],[8],[9],[13]           $ (32,000) [1],[2],[3],[19]      
Investments at fair value   $ 515,000 [7],[8],[9],[13]           $ (15,000) [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.25% [7],[9],[13] 5.25% [7],[9],[13] 5.25% [7],[9],[13] 5.25% [7],[9],[13] 5.25% [7],[9],[13] 5.25% [7],[9],[13] 5.00% [1],[2],[3],[19] 5.00% [1],[2],[3],[19] 5.00% [1],[2],[3],[19]  
Investment interest rate [7],[9],[10],[13]   9.58% 9.58% 9.58% 9.58% 9.58% 9.58%        
Principal   $ 824,000 [7],[8],[9],[11],[13]           $ 0 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: Spanx, LLC, Apparel Retail, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   17,757,000 [7],[9],[13]           17,887,000 [2],[3],[19]      
Investments at fair value   $ 16,085,000 [7],[9],[13]           $ 18,032,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.50% [7],[9],[13] 5.50% [7],[9],[13] 5.50% [7],[9],[13] 5.50% [7],[9],[13] 5.50% [7],[9],[13] 5.50% [7],[9],[13] 5.25% [2],[3],[19] 5.25% [2],[3],[19] 5.25% [2],[3],[19]  
Investment interest rate   9.76% [7],[9],[10],[13] 9.76% [7],[9],[10],[13] 9.76% [7],[9],[10],[13] 9.76% [7],[9],[10],[13] 9.76% [7],[9],[10],[13] 9.76% [7],[9],[10],[13] 10.20% [2],[3],[5],[19] 10.20% [2],[3],[5],[19] 10.20% [2],[3],[5],[19]  
Principal   $ 17,872,000 [7],[9],[11],[13]           $ 18,058,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Spruce Bidco I Inc., Health Care Equipment, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[8],[9],[13]   (126,000)                  
Investments at fair value [7],[8],[9],[13]   $ (133,000)                  
Investment, basis spread, variable rate (as a percent) [7],[8],[9],[13]   5.00% 5.00% 5.00% 5.00% 5.00% 5.00%        
Principal [7],[8],[9],[11],[13]   $ 0                  
Investment, Identifier [Axis]: Spruce Bidco I Inc., Health Care Equipment, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[13]   40,477,000                  
Investments at fair value [7],[9],[13]   $ 40,451,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[13]   5.00% 5.00% 5.00% 5.00% 5.00% 5.00%        
Investment interest rate [7],[9],[10],[13]   9.13% 9.13% 9.13% 9.13% 9.13% 9.13%        
Principal [7],[9],[11],[13]   $ 41,034,000                  
Investment, Identifier [Axis]: Spruce Bidco I Inc., Health Care Equipment, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[13]   5,060,000                  
Investments at fair value [7],[9],[13]   $ 5,263,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[13]   5.00% 5.00% 5.00% 5.00% 5.00% 5.00%        
Investment interest rate [7],[9],[10],[13]   7.72% 7.72% 7.72% 7.72% 7.72% 7.72%        
Principal [7],[9],[11],[13]           $ 7,429          
Investment, Identifier [Axis]: Spruce Bidco I Inc., Health Care Equipment, First Lien Term Loan 3                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[13]   $ 5,060,000                  
Investments at fair value [7],[9],[13]   $ 5,302,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[13]   5.25% 5.25% 5.25% 5.25% 5.25% 5.25%        
Investment interest rate [7],[9],[10],[13]   6.00% 6.00% 6.00% 6.00% 6.00% 6.00%        
Principal | ¥ [7],[9],[11],[13]             ¥ 794,351        
Investment, Identifier [Axis]: Staples, Inc., Office Services & Supplies, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   $ 9,566,000 [9],[13]           13,259,000 [2],[19]      
Investments at fair value   $ 9,378,000 [9],[13]           $ 12,555,000 [2],[19]      
Investment, basis spread, variable rate (as a percent)   5.75% [9],[13] 5.75% [9],[13] 5.75% [9],[13] 5.75% [9],[13] 5.75% [9],[13] 5.75% [9],[13] 5.75% [2],[19] 5.75% [2],[19] 5.75% [2],[19]  
Investment interest rate   10.05% [9],[10],[13] 10.05% [9],[10],[13] 10.05% [9],[10],[13] 10.05% [9],[10],[13] 10.05% [9],[10],[13] 10.05% [9],[10],[13] 10.69% [2],[5],[19] 10.69% [2],[5],[19] 10.69% [2],[5],[19]  
Principal   $ 9,863,000 [9],[11],[13]           $ 13,780,000 [2],[6],[19]      
Investment, Identifier [Axis]: Staples, Inc., Office Services & Supplies, Fixed Rate Bond                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   6,720,000 [9]           6,771,000 [2]      
Investments at fair value   $ 6,792,000 [9]           $ 6,641,000 [2]      
Investment interest rate   10.75% [9],[10] 10.75% [9],[10] 10.75% [9],[10] 10.75% [9],[10] 10.75% [9],[10] 10.75% [9],[10] 10.75% [2],[5] 10.75% [2],[5] 10.75% [2],[5]  
Principal   $ 6,835,000 [9],[11]           $ 6,835,000 [2],[6]      
Investment, Identifier [Axis]: Star Parent, Inc., Life Sciences Tools & Services, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [9],[13]   9,639,000                  
Investments at fair value [9],[13]   $ 9,937,000                  
Investment, basis spread, variable rate (as a percent) [9],[13]   4.00% 4.00% 4.00% 4.00% 4.00% 4.00%        
Investment interest rate [9],[10],[13]   8.00% 8.00% 8.00% 8.00% 8.00% 8.00%        
Principal [9],[11],[13]   $ 9,924,000                  
Investment, Identifier [Axis]: SumUp Holdings Luxembourg, Diversified Financial Services, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   20,243,000 [7],[8],[9],[12],[13]           20,199,000 [1],[2],[3],[15],[19]      
Investments at fair value   $ 22,144,000 [7],[8],[9],[12],[13]           $ 20,785,000 [1],[2],[3],[15],[19]      
Investment, basis spread, variable rate (as a percent)   6.50% [7],[8],[9],[12],[13] 6.50% [7],[8],[9],[12],[13] 6.50% [7],[8],[9],[12],[13] 6.50% [7],[8],[9],[12],[13] 6.50% [7],[8],[9],[12],[13] 6.50% [7],[8],[9],[12],[13] 6.50% [1],[2],[3],[15],[19] 6.50% [1],[2],[3],[15],[19] 6.50% [1],[2],[3],[15],[19]  
Investment interest rate   8.52% [7],[8],[9],[10],[12],[13] 8.52% [7],[8],[9],[10],[12],[13] 8.52% [7],[8],[9],[10],[12],[13] 8.52% [7],[8],[9],[10],[12],[13] 8.52% [7],[8],[9],[10],[12],[13] 8.52% [7],[8],[9],[10],[12],[13] 10.04% [1],[2],[3],[5],[15],[19] 10.04% [1],[2],[3],[5],[15],[19] 10.04% [1],[2],[3],[5],[15],[19]  
Principal     € 18,846 [7],[8],[9],[11],[12],[13]         $ 18,846,000 [1],[2],[3],[6],[15],[19]      
Investment, Identifier [Axis]: Supreme Fitness Group NY Holdings, LLC, Leisure Facilities, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [1],[2],[3],[19]               (8,000)      
Investments at fair value [1],[2],[3],[19]               $ (62,000)      
Investment, basis spread, variable rate (as a percent) [1],[2],[3],[19]               7.00% 7.00% 7.00%  
Principal [1],[2],[3],[6],[19]               $ 0      
Investment, Identifier [Axis]: Supreme Fitness Group NY Holdings, LLC, Leisure Facilities, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[19]               2,706,000      
Investments at fair value [2],[3],[19]               $ 2,612,000      
Investment, basis spread, variable rate (as a percent) [2],[3],[19]               7.00% 7.00% 7.00%  
Investment interest rate [2],[3],[5],[19]               12.58% 12.58% 12.58%  
Principal [2],[3],[6],[19]               $ 2,721,000      
Investment, Identifier [Axis]: Supreme Fitness Group NY Holdings, LLC, Leisure Facilities, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[19]               3,160,000      
Investments at fair value [2],[3],[19]               $ 3,142,000      
Investment, basis spread, variable rate (as a percent) [2],[3],[19]               7.00% 7.00% 7.00%  
Investment interest rate [2],[3],[5],[19]               12.58% 12.58% 12.58%  
Principal | € [2],[3],[6],[19]                 € 3,273    
Investment, Identifier [Axis]: Supreme Fitness Group NY Holdings, LLC, Leisure Facilities, First Lien Term Loan 3                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[19]               $ 31,612,000      
Investments at fair value [2],[3],[19]               $ 30,507,000      
Investment, basis spread, variable rate (as a percent) [2],[3],[19]               7.00% 7.00% 7.00%  
Investment interest rate [2],[3],[5],[19]               12.58% 12.58% 12.58%  
Principal [2],[3],[6],[19]               $ 31,778,000      
Investment, Identifier [Axis]: Symphone CLO Ltd, Multi-Sector Holdings, CLO Notes                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [9],[12],[13]   $ 2,000,000                  
Investments at fair value [9],[12],[13]   $ 1,918,000                  
Investment, basis spread, variable rate (as a percent) [9],[12],[13]   5.00% 5.00% 5.00% 5.00% 5.00% 5.00%        
Investment interest rate [9],[10],[12],[13]   9.33% 9.33% 9.33% 9.33% 9.33% 9.33%        
Principal [9],[11],[12],[13]   $ 2,000,000                  
Investment, Identifier [Axis]: TBRS, Inc., Health Care Supplies, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[8],[9],[13]   124,000                  
Investments at fair value [7],[8],[9],[13]   $ 121,000                  
Investment, basis spread, variable rate (as a percent) [7],[8],[9],[13]   4.75% 4.75% 4.75% 4.75% 4.75% 4.75%        
Investment interest rate [7],[8],[9],[10],[13]   8.95% 8.95% 8.95% 8.95% 8.95% 8.95%        
Principal [7],[8],[9],[11],[13]   $ 144,000                  
Investment, Identifier [Axis]: TBRS, Inc., Health Care Supplies, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[13]   17,209,000                  
Investments at fair value [7],[9],[13]   $ 17,177,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[13]   4.75% 4.75% 4.75% 4.75% 4.75% 4.75%        
Investment interest rate [7],[9],[10],[13]   8.75% 8.75% 8.75% 8.75% 8.75% 8.75%        
Principal [7],[9],[11],[13]   $ 17,350,000                  
Investment, Identifier [Axis]: TBRS, Inc., Health Care Supplies, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[8],[9],[13]   (12,000)                  
Investments at fair value [7],[8],[9],[13]   $ (10,000)                  
Investment, basis spread, variable rate (as a percent) [7],[8],[9],[13]   4.75% 4.75% 4.75% 4.75% 4.75% 4.75%        
Principal [7],[8],[9],[11],[13]   $ 0                  
Investment, Identifier [Axis]: THL Zinc Ventures Ltd, Diversified Metals & Mining, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[15]               50,061,000      
Investments at fair value [2],[3],[15]               $ 50,419,000      
Investment interest rate [2],[3],[5],[15]               13.00% 13.00% 13.00%  
Principal [2],[3],[6],[15]               $ 50,419,000      
Investment, Identifier [Axis]: Telephone and Data Systems, Inc., Wireless Telecommunication Services, Subordinated Debt Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[15],[19]               24,343,000      
Investments at fair value [2],[3],[15],[19]               $ 24,405,000      
Investment, basis spread, variable rate (as a percent) [2],[3],[15],[19]               7.00% 7.00% 7.00%  
Investment interest rate [2],[3],[5],[15],[19]               12.25% 12.25% 12.25%  
Principal [2],[3],[6],[15],[19]               $ 25,031,000      
Investment, Identifier [Axis]: Telephone and Data Systems, Inc., Wireless Telecommunication Services, Subordinated Debt Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [1],[2],[3],[15],[19]               (86,000)      
Investments at fair value [1],[2],[3],[15],[19]               $ (94,000)      
Investment, basis spread, variable rate (as a percent) [1],[2],[3],[15],[19]               7.00% 7.00% 7.00%  
Principal [1],[2],[3],[6],[15],[19]               $ 0      
Investment, Identifier [Axis]: Telestream 2 LLC, Application Software, Common Stock                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   0.50% 0.50% 0.50% 0.50% 0.50% 0.50%        
Investment owned, at cost [7],[20],[21]   $ 7,207,000                  
Investments at fair value   $ 7,207,000 [7],[20],[21]           0      
Investment owned, balance (in shares) | shares [7],[20],[21]   744,491 744,491 744,491 744,491 744,491 744,491        
Investment, Identifier [Axis]: Telestream 2 LLC, Application Software, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   0.00% 0.00% 0.00% 0.00% 0.00% 0.00%        
Investment owned, at cost [7],[8],[13],[21]   $ (37,000)                  
Investments at fair value   $ 0 [7],[8],[13],[21]           0      
Investment, basis spread, variable rate (as a percent) [7],[8],[13],[21]   8.25% 8.25% 8.25% 8.25% 8.25% 8.25%        
Principal [7],[8],[11],[13],[21]   $ 0                  
Investment, Identifier [Axis]: Telestream 2 LLC, Application Software, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   1.20% 1.20% 1.20% 1.20% 1.20% 1.20%        
Investment owned, at cost [7],[13],[21]   $ 17,123,000                  
Investments at fair value   $ 17,123,000 [7],[13],[21]           0      
Investment, basis spread, variable rate (as a percent) [7],[13],[21]   6.25% 6.25% 6.25% 6.25% 6.25% 6.25%        
Investment interest rate [7],[10],[13],[21]   10.54% 10.54% 10.54% 10.54% 10.54% 10.54%        
Principal [7],[11],[13],[21]   $ 17,123,000                  
Investment, Identifier [Axis]: Telestream Holdings Corporation, Application Software, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [1],[2],[3],[18],[19]               1,918,000      
Investments at fair value [1],[2],[3],[18],[19]               $ 1,727,000      
Investment, basis spread, variable rate (as a percent) [1],[2],[3],[18],[19]               9.75% 9.75% 9.75%  
Principal [1],[2],[3],[6],[18],[19]               $ 1,946,000      
Investment, Identifier [Axis]: Telestream Holdings Corporation, Application Software, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[18],[19]               25,237,000      
Investments at fair value [2],[3],[18],[19]               $ 23,898,000      
Investment, basis spread, variable rate (as a percent) [2],[3],[18],[19]               9.75% 9.75% 9.75%  
Principal [2],[3],[6],[18],[19]               $ 26,553,000      
Investment, Identifier [Axis]: Ten-X LLC, Interactive Media & Services, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   18,953,000 [9],[13]           18,960,000 [2],[3],[19]      
Investments at fair value   $ 17,087,000 [9],[13]           $ 18,837,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   6.00% [9],[13] 6.00% [9],[13] 6.00% [9],[13] 6.00% [9],[13] 6.00% [9],[13] 6.00% [9],[13] 6.00% [2],[3],[19] 6.00% [2],[3],[19] 6.00% [2],[3],[19]  
Investment interest rate   10.04% [9],[10],[13] 10.04% [9],[10],[13] 10.04% [9],[10],[13] 10.04% [9],[10],[13] 10.04% [9],[10],[13] 10.04% [9],[10],[13] 10.74% [2],[3],[5],[19] 10.74% [2],[3],[5],[19] 10.74% [2],[3],[5],[19]  
Principal   $ 19,472,000 [9],[11],[13]           $ 19,683,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: The Avery, Real Estate Operating Companies, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   0.20% 0.20% 0.20% 0.20% 0.20% 0.20% 0.30% 0.30% 0.30%  
Investment owned, at cost   $ 4,028,000 [7],[17],[21]           $ 4,657,000 [3],[18],[22]      
Investments at fair value   $ 3,438,000 [7],[17],[21]           $ 4,087,000 [3],[18],[22]     0
Investment, interest rate, paid in kind (as a percent)   10.00% [7],[17],[21] 10.00% [7],[17],[21] 10.00% [7],[17],[21] 10.00% [7],[17],[21] 10.00% [7],[17],[21] 10.00% [7],[17],[21] 10.00% [3],[18],[22] 10.00% [3],[18],[22] 10.00% [3],[18],[22]  
Principal   $ 5,250,000 [7],[11],[17],[21]           $ 5,065,000 [3],[6],[18],[22]      
Investment, Identifier [Axis]: The Avery, Real Estate Operating Companies, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   1.00% 1.00% 1.00% 1.00% 1.00% 1.00% 1.20% 1.20% 1.20%  
Investment owned, at cost   $ 16,663,000 [7],[17],[21]           $ 19,262,000 [3],[18],[22]      
Investments at fair value   $ 14,197,000 [7],[17],[21]           $ 18,235,000 [3],[18],[22]     0
Investment, interest rate, paid in kind (as a percent)   10.00% [7],[17],[21] 10.00% [7],[17],[21] 10.00% [7],[17],[21] 10.00% [7],[17],[21] 10.00% [7],[17],[21] 10.00% [7],[17],[21] 10.00% [3],[18],[22] 10.00% [3],[18],[22] 10.00% [3],[18],[22]  
Principal   $ 21,677,000 [7],[11],[17],[21]           $ 20,917,000 [3],[6],[18],[22]      
Investment, Identifier [Axis]: The Avery, Real Estate Operating Companies, Membership Interest                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00%  
Investment owned, at cost   $ 0 [7],[20],[21]           $ 0 [3],[22]      
Investments at fair value   0 [7],[20],[21]           0 [3],[22]     $ 0
Principal   $ 0           $ 0      
Investment owned, ownership (as a percent)   6.40% [7],[20],[21] 6.40% [7],[20],[21] 6.40% [7],[20],[21] 6.40% [7],[20],[21] 6.40% [7],[20],[21] 6.40% [7],[20],[21] 6.40% [3],[22] 6.40% [3],[22] 6.40% [3],[22]  
Investment, Identifier [Axis]: Thrasio, LLC, Broadline Retail, Common Stock                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   $ 0 [7],[9],[20]           $ 0 [2],[3]      
Investments at fair value   $ 0 [7],[9],[20]           0 [2],[3]      
Principal [2],[3],[6]               $ 0      
Investment owned, balance (in shares) | shares   321,058 [7],[9],[20] 321,058 [7],[9],[20] 321,058 [7],[9],[20] 321,058 [7],[9],[20] 321,058 [7],[9],[20] 321,058 [7],[9],[20] 321,058 [2],[3] 321,058 [2],[3] 321,058 [2],[3]  
Investment, Identifier [Axis]: Thrasio, LLC, Broadline Retail, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   $ 6,988,000 [7],[9],[13]           $ 5,952,000 [2],[3],[19]      
Investments at fair value   $ 6,798,000 [7],[9],[13]           $ 6,018,000 [2],[3],[19]      
Investment, interest rate, paid in kind (as a percent)   14.58% [7],[9],[13] 14.58% [7],[9],[13] 14.58% [7],[9],[13] 14.58% [7],[9],[13] 14.58% [7],[9],[13] 14.58% [7],[9],[13] 15.54% [2],[3],[19] 15.54% [2],[3],[19] 15.54% [2],[3],[19]  
Investment, basis spread, variable rate (as a percent)   10.00% [7],[9],[13] 10.00% [7],[9],[13] 10.00% [7],[9],[13] 10.00% [7],[9],[13] 10.00% [7],[9],[13] 10.00% [7],[9],[13] 10.00% [2],[3],[19] 10.00% [2],[3],[19] 10.00% [2],[3],[19]  
Principal   $ 7,137,000 [7],[9],[11],[13]           $ 6,141,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Thrasio, LLC, Broadline Retail, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   16,279,000 [7],[9],[13],[17]           16,279,000 [2],[3],[18],[19]      
Investments at fair value   $ 14,715,000 [7],[9],[13],[17]           $ 16,536,000 [2],[3],[18],[19]      
Investment, basis spread, variable rate (as a percent)   10.00% [7],[9],[13],[17] 10.00% [7],[9],[13],[17] 10.00% [7],[9],[13],[17] 10.00% [7],[9],[13],[17] 10.00% [7],[9],[13],[17] 10.00% [7],[9],[13],[17] 10.00% [2],[3],[18],[19] 10.00% [2],[3],[18],[19] 10.00% [2],[3],[18],[19]  
Principal   $ 21,901,000 [7],[9],[11],[13],[17]           $ 18,844,000 [2],[3],[6],[18],[19]      
Investment, Identifier [Axis]: Touchstone Acquisition, Inc., Health Care Supplies, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[19]               14,426,000      
Investments at fair value [2],[3],[19]               $ 14,218,000      
Investment, basis spread, variable rate (as a percent) [2],[3],[19]               6.00% 6.00% 6.00%  
Investment interest rate [2],[3],[5],[19]               10.95% 10.95% 10.95%  
Principal [2],[3],[6],[19]               $ 14,508,000      
Investment, Identifier [Axis]: Trinitas CLO VI Ltd., Multi-Sector Holdings, CLO Notes                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   854,000 [9],[12],[13]           852,000 [2],[15],[19]      
Investments at fair value   $ 892,000 [9],[12],[13]           $ 856,000 [2],[15],[19]      
Investment, basis spread, variable rate (as a percent)   7.08% [9],[12],[13] 7.08% [9],[12],[13] 7.08% [9],[12],[13] 7.08% [9],[12],[13] 7.08% [9],[12],[13] 7.08% [9],[12],[13] 7.08% [2],[15],[19] 7.08% [2],[15],[19] 7.08% [2],[15],[19]  
Investment interest rate   11.40% [9],[10],[12],[13] 11.40% [9],[10],[12],[13] 11.40% [9],[10],[12],[13] 11.40% [9],[10],[12],[13] 11.40% [9],[10],[12],[13] 11.40% [9],[10],[12],[13] 12.36% [2],[5],[15],[19] 12.36% [2],[5],[15],[19] 12.36% [2],[5],[15],[19]  
Principal   $ 905,000 [9],[11],[12],[13]           $ 905,000 [2],[6],[15],[19]      
Investment, Identifier [Axis]: Trinitas CLO XV DAC, Multi-Sector Holdings, CLO Notes                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[15],[19]               824,000      
Investments at fair value [2],[15],[19]               $ 978,000      
Investment, basis spread, variable rate (as a percent) [2],[15],[19]               7.71% 7.71% 7.71%  
Investment interest rate [2],[5],[15],[19]               12.99% 12.99% 12.99%  
Principal [2],[6],[15],[19]               $ 1,000,000      
Investment, Identifier [Axis]: Truck-Lite Co., LLC, Construction Machinery & Heavy Transportation Equipment, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [1],[2],[3],[19]               (23,000)      
Investments at fair value [1],[2],[3],[19]               $ 29,000      
Investment, basis spread, variable rate (as a percent) [1],[2],[3],[19]               5.75% 5.75% 5.75%  
Investment interest rate [1],[2],[3],[5],[19]               10.85% 10.85% 10.85%  
Principal [1],[2],[3],[6],[19]               $ 29,000      
Investment, Identifier [Axis]: Truck-Lite Co., LLC, Construction Machinery & Heavy Transportation Equipment, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   30,563,000 [7],[9],[13]           25,976,000 [2],[3],[19]      
Investments at fair value   $ 30,721,000 [7],[9],[13]           $ 26,457,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.00% [7],[9],[13] 5.00% [7],[9],[13] 5.00% [7],[9],[13] 5.00% [7],[9],[13] 5.00% [7],[9],[13] 5.00% [7],[9],[13] 5.75% [2],[3],[19] 5.75% [2],[3],[19] 5.75% [2],[3],[19]  
Investment interest rate   8.89% [7],[9],[10],[13] 8.89% [7],[9],[10],[13] 8.89% [7],[9],[10],[13] 8.89% [7],[9],[10],[13] 8.89% [7],[9],[10],[13] 8.89% [7],[9],[10],[13] 10.86% [2],[3],[5],[19] 10.86% [2],[3],[5],[19] 10.86% [2],[3],[5],[19]  
Principal   $ 31,025,000 [7],[9],[11],[13]           $ 26,457,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Truck-Lite Co., LLC, Construction Machinery & Heavy Transportation Equipment, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   558,000 [7],[9],[13]           (52,000) [1],[2],[3],[19]      
Investments at fair value   $ 558,000 [7],[9],[13]           $ 0 [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.00% [7],[9],[13] 5.00% [7],[9],[13] 5.00% [7],[9],[13] 5.00% [7],[9],[13] 5.00% [7],[9],[13] 5.00% [7],[9],[13] 5.75% [1],[2],[3],[19] 5.75% [1],[2],[3],[19] 5.75% [1],[2],[3],[19]  
Investment interest rate [7],[9],[10],[13]   8.89% 8.89% 8.89% 8.89% 8.89% 8.89%        
Principal   $ 563,000 [7],[9],[11],[13]           $ 0 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: Truck-Lite Co., LLC, Construction Machinery & Heavy Transportation Equipment, First Lien Term Loan 3                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[8],[9],[13]   (19,000)                  
Investments at fair value [7],[8],[9],[13]   $ (26,000)                  
Investment, basis spread, variable rate (as a percent) [7],[8],[9],[13]   5.00% 5.00% 5.00% 5.00% 5.00% 5.00%        
Principal [7],[8],[9],[11],[13]   $ 0                  
Investment, Identifier [Axis]: Truck-Lite Co., LLC, Construction Machinery & Heavy Transportation Equipment, First Lien Term Loan 4                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[8],[9],[13]   (17,000)                  
Investments at fair value [7],[8],[9],[13]   $ (11,000)                  
Investment, basis spread, variable rate (as a percent) [7],[8],[9],[13]   5.00% 5.00% 5.00% 5.00% 5.00% 5.00%        
Principal [7],[8],[9],[11],[13]   $ 0                  
Investment, Identifier [Axis]: Truck-Lite Co., LLC, Construction Machinery & Heavy Transportation Equipment, First Lien Term Loan 5                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[8],[9],[13]   2,098,000                  
Investments at fair value [7],[8],[9],[13]   $ 2,100,000                  
Investment, basis spread, variable rate (as a percent) [7],[8],[9],[13]   5.00% 5.00% 5.00% 5.00% 5.00% 5.00%        
Investment interest rate [7],[8],[9],[10],[13]   8.89% 8.89% 8.89% 8.89% 8.89% 8.89%        
Principal [7],[8],[9],[11],[13]   $ 2,153,000                  
Investment, Identifier [Axis]: Truck-Lite Co., LLC, Construction Machinery & Heavy Transportation Equipment, First Lien Term Loan 6                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[8],[9],[13]   (45,000)                  
Investments at fair value [7],[8],[9],[13]   $ (31,000)                  
Investment, basis spread, variable rate (as a percent) [7],[8],[9],[13]   5.00% 5.00% 5.00% 5.00% 5.00% 5.00%        
Principal [7],[8],[9],[11],[13]   $ 0                  
Investment, Identifier [Axis]: USIC Holdings, Inc., Diversified Support Services, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   683,000 [7],[8],[9],[13]           955,000 [1],[2],[3],[19]      
Investments at fair value   $ 700,000 [7],[8],[9],[13]           $ 955,000 [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.25% [7],[8],[9],[13] 5.25% [7],[8],[9],[13] 5.25% [7],[8],[9],[13] 5.25% [7],[8],[9],[13] 5.25% [7],[8],[9],[13] 5.25% [7],[8],[9],[13] 5.25% [1],[2],[3],[19] 5.25% [1],[2],[3],[19] 5.25% [1],[2],[3],[19]  
Investment interest rate   9.48% [7],[8],[9],[10],[13] 9.48% [7],[8],[9],[10],[13] 9.48% [7],[8],[9],[10],[13] 9.48% [7],[8],[9],[10],[13] 9.48% [7],[8],[9],[10],[13] 9.48% [7],[8],[9],[10],[13] 10.10% [1],[2],[3],[5],[19] 10.10% [1],[2],[3],[5],[19] 10.10% [1],[2],[3],[5],[19]  
Principal   $ 700,000 [7],[8],[9],[11],[13]           $ 975,000 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: USIC Holdings, Inc., Diversified Support Services, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[13]   5,701,000                  
Investments at fair value [7],[9],[13]   $ 5,759,000                  
Investment, interest rate, paid in kind (as a percent) [7],[9],[13]   3.13% 3.13% 3.13% 3.13% 3.13% 3.13%        
Investment, basis spread, variable rate (as a percent) [7],[9],[13]   5.75% 5.75% 5.75% 5.75% 5.75% 5.75%        
Investment interest rate [7],[9],[10],[13]   6.82% 6.82% 6.82% 6.82% 6.82% 6.82%        
Principal [7],[9],[11],[13]   $ 5,758,000                  
Investment, Identifier [Axis]: USIC Holdings, Inc., Diversified Support Services, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   15,522,000 [7],[9],[13]           15,617,000 [2],[3],[19]      
Investments at fair value   $ 15,658,000 [7],[9],[13]           $ 15,618,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.50% [7],[9],[13] 5.50% [7],[9],[13] 5.50% [7],[9],[13] 5.50% [7],[9],[13] 5.50% [7],[9],[13] 5.50% [7],[9],[13] 5.50% [2],[3],[19] 5.50% [2],[3],[19] 5.50% [2],[3],[19]  
Investment interest rate   9.70% [7],[9],[10],[13] 9.70% [7],[9],[10],[13] 9.70% [7],[9],[10],[13] 9.70% [7],[9],[10],[13] 9.70% [7],[9],[10],[13] 9.70% [7],[9],[10],[13] 10.35% [2],[3],[5],[19] 10.35% [2],[3],[5],[19] 10.35% [2],[3],[5],[19]  
Principal   $ 15,655,000 [7],[9],[11],[13]           $ 15,773,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: USIC Holdings, Inc., Diversified Support Services, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   422,000 [7],[8],[9],[13]           24,000 [1],[2],[3],[19]      
Investments at fair value   $ 422,000 [7],[8],[9],[13]           $ 15,000 [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.50% [7],[8],[9],[13] 5.50% [7],[8],[9],[13] 5.50% [7],[8],[9],[13] 5.50% [7],[8],[9],[13] 5.50% [7],[8],[9],[13] 5.50% [7],[8],[9],[13] 5.50% [1],[2],[3],[19] 5.50% [1],[2],[3],[19] 5.50% [1],[2],[3],[19]  
Investment interest rate   9.70% [7],[8],[9],[10],[13] 9.70% [7],[8],[9],[10],[13] 9.70% [7],[8],[9],[10],[13] 9.70% [7],[8],[9],[10],[13] 9.70% [7],[8],[9],[10],[13] 9.70% [7],[8],[9],[10],[13] 10.35% [1],[2],[3],[5],[19] 10.35% [1],[2],[3],[5],[19] 10.35% [1],[2],[3],[5],[19]  
Principal   $ 422,000 [7],[8],[9],[11],[13]           $ 24,000 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: Verona Pharma, Inc., Pharmaceuticals, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   2,476,000 [7],[9],[12]           2,466,000 [2],[3],[15]      
Investments at fair value   $ 2,600,000 [7],[9],[12]           $ 2,468,000 [2],[3],[15]      
Investment interest rate   9.70% [7],[9],[10],[12] 9.70% [7],[9],[10],[12] 9.70% [7],[9],[10],[12] 9.70% [7],[9],[10],[12] 9.70% [7],[9],[10],[12] 9.70% [7],[9],[10],[12] 11.00% [2],[3],[5],[15] 11.00% [2],[3],[5],[15] 11.00% [2],[3],[5],[15]  
Principal   $ 2,512,000 [7],[9],[11],[12]           $ 2,512,000 [2],[3],[6],[15]      
Investment, Identifier [Axis]: Verona Pharma, Inc., Pharmaceuticals, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   3,152,000 [7],[9],[12]           3,134,000 [2],[3],[15]      
Investments at fair value   $ 3,310,000 [7],[9],[12]           $ 3,142,000 [2],[3],[15]      
Investment interest rate   9.70% [7],[9],[10],[12] 9.70% [7],[9],[10],[12] 9.70% [7],[9],[10],[12] 9.70% [7],[9],[10],[12] 9.70% [7],[9],[10],[12] 9.70% [7],[9],[10],[12] 11.00% [2],[3],[5],[15] 11.00% [2],[3],[5],[15] 11.00% [2],[3],[5],[15]  
Principal   $ 3,198,000 [7],[9],[11],[12]           $ 3,198,000 [2],[3],[6],[15]      
Investment, Identifier [Axis]: Verona Pharma, Inc., Pharmaceuticals, First Lien Term Loan 3                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   3,377,000 [7],[9],[12]           0 [1],[2],[3],[15]      
Investments at fair value   $ 3,546,000 [7],[9],[12]           0 [1],[2],[3],[15]      
Investment interest rate [7],[9],[10],[12]   9.70% 9.70% 9.70% 9.70% 9.70% 9.70%        
Principal   $ 3,426,000 [7],[9],[11],[12]           0 [1],[2],[3],[6],[15]      
Investment, Identifier [Axis]: Verona Pharma, Inc., Pharmaceuticals, First Lien Term Loan 4                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   0 [7],[8],[9],[12]           0 [1],[2],[3],[15]      
Investments at fair value   $ 0 [7],[8],[9],[12]           0 [1],[2],[3],[15]      
Investment interest rate [7],[8],[9],[10],[12]   11.00% 11.00% 11.00% 11.00% 11.00% 11.00%        
Principal   $ 0 [7],[8],[9],[11],[12]           0 [1],[2],[3],[6],[15]      
Investment, Identifier [Axis]: Verona Pharma, Inc., Pharmaceuticals, First Lien Term Loan 5                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[15],[16]               4,652,000      
Investments at fair value [2],[3],[15],[16]               4,699,000      
Principal [2],[3],[6],[15],[16]               4,652,000      
Investment, Identifier [Axis]: Verona Pharma, Inc., Pharmaceuticals, First Lien Term Loan 6                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [1],[2],[3],[15],[16]               0      
Investments at fair value [1],[2],[3],[15],[16]               0      
Principal [1],[2],[3],[6],[15],[16]               0      
Investment, Identifier [Axis]: WP CPP Holdings, LLC, Aerospace & Defense, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   (57,000) [7],[8],[9],[13]           (70,000) [1],[2],[3],[19]      
Investments at fair value   $ (9,000) [7],[8],[9],[13]           $ (19,000) [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   7.00% [7],[8],[9],[13] 7.00% [7],[8],[9],[13] 7.00% [7],[8],[9],[13] 7.00% [7],[8],[9],[13] 7.00% [7],[8],[9],[13] 7.00% [7],[8],[9],[13] 6.75% [1],[2],[3],[19] 6.75% [1],[2],[3],[19] 6.75% [1],[2],[3],[19]  
Principal   $ 0 [7],[8],[9],[11],[13]           $ 0 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: WP CPP Holdings, LLC, Aerospace & Defense, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   30,711,000 [7],[9],[13]           29,933,000 [2],[3],[19]      
Investments at fair value   $ 31,236,000 [7],[9],[13]           $ 30,396,000 [2],[3],[19]      
Investment, interest rate, paid in kind (as a percent)   3.88% [7],[9],[13] 3.88% [7],[9],[13] 3.88% [7],[9],[13] 3.88% [7],[9],[13] 3.88% [7],[9],[13] 3.88% [7],[9],[13] 4.13% [2],[3],[19] 4.13% [2],[3],[19] 4.13% [2],[3],[19]  
Investment, basis spread, variable rate (as a percent)   7.00% [7],[9],[13] 7.00% [7],[9],[13] 7.00% [7],[9],[13] 7.00% [7],[9],[13] 7.00% [7],[9],[13] 7.00% [7],[9],[13] 7.50% [2],[3],[19] 7.50% [2],[3],[19] 7.50% [2],[3],[19]  
Investment interest rate   7.29% [7],[9],[10],[13] 7.29% [7],[9],[10],[13] 7.29% [7],[9],[10],[13] 7.29% [7],[9],[10],[13] 7.29% [7],[9],[10],[13] 7.29% [7],[9],[10],[13] 8.39% [2],[3],[5],[19] 8.39% [2],[3],[5],[19] 8.39% [2],[3],[5],[19]  
Principal   $ 31,220,000 [7],[9],[11],[13]           $ 30,570,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: WP CPP Holdings, LLC, Aerospace & Defense, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   1,480,000 [7],[9],[13]           1,449,000 [2],[3],[19]      
Investments at fair value   $ 1,480,000 [7],[9],[13]           $ 1,448,000 [2],[3],[19]      
Investment, interest rate, paid in kind (as a percent)   3.88% [7],[9],[13] 3.88% [7],[9],[13] 3.88% [7],[9],[13] 3.88% [7],[9],[13] 3.88% [7],[9],[13] 3.88% [7],[9],[13] 4.13% [2],[3],[19] 4.13% [2],[3],[19] 4.13% [2],[3],[19]  
Investment, basis spread, variable rate (as a percent)   7.00% [7],[9],[13] 7.00% [7],[9],[13] 7.00% [7],[9],[13] 7.00% [7],[9],[13] 7.00% [7],[9],[13] 7.00% [7],[9],[13] 7.50% [2],[3],[19] 7.50% [2],[3],[19] 7.50% [2],[3],[19]  
Investment interest rate   7.29% [7],[9],[10],[13] 7.29% [7],[9],[10],[13] 7.29% [7],[9],[10],[13] 7.29% [7],[9],[10],[13] 7.29% [7],[9],[10],[13] 7.29% [7],[9],[10],[13] 8.39% [2],[3],[5],[19] 8.39% [2],[3],[5],[19] 8.39% [2],[3],[5],[19]  
Principal   $ 1,480,000 [7],[9],[11],[13]           $ 1,449,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Werner Finco LP, Building Products, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[13]   12,600,000                  
Investments at fair value [7],[9],[13]   $ 12,609,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[13]   5.50% 5.50% 5.50% 5.50% 5.50% 5.50%        
Investment interest rate [7],[9],[10],[13]   9.52% 9.52% 9.52% 9.52% 9.52% 9.52%        
Principal [7],[9],[11],[13]   $ 12,782,000                  
Investment, Identifier [Axis]: Whitney Merger Sub, Inc., Application Software, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[8],[9],[13]   (24,000)                  
Investments at fair value [7],[8],[9],[13]   $ (22,000)                  
Investment, basis spread, variable rate (as a percent) [7],[8],[9],[13]   4.75% 4.75% 4.75% 4.75% 4.75% 4.75%        
Principal [7],[8],[9],[11],[13]   $ 0                  
Investment, Identifier [Axis]: Whitney Merger Sub, Inc., Application Software, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [7],[9],[13]   16,547,000                  
Investments at fair value [7],[9],[13]   $ 16,559,000                  
Investment, basis spread, variable rate (as a percent) [7],[9],[13]   4.75% 4.75% 4.75% 4.75% 4.75% 4.75%        
Investment interest rate [7],[9],[10],[13]   8.75% 8.75% 8.75% 8.75% 8.75% 8.75%        
Principal [7],[9],[11],[13]   $ 16,714,000                  
Investment, Identifier [Axis]: Win Brands Group LLC, Housewares & Specialties, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   2,593,000 [7],[9],[13]           2,760,000 [2],[3],[19]      
Investments at fair value   $ 2,354,000 [7],[9],[13]           $ 2,546,000 [2],[3],[19]      
Investment, interest rate, paid in kind (as a percent)   18.13% [7],[9],[13] 18.13% [7],[9],[13] 18.13% [7],[9],[13] 18.13% [7],[9],[13] 18.13% [7],[9],[13] 18.13% [7],[9],[13] 6.00% [2],[3],[19] 6.00% [2],[3],[19] 6.00% [2],[3],[19]  
Investment, basis spread, variable rate (as a percent)   14.00% [7],[9],[13] 14.00% [7],[9],[13] 14.00% [7],[9],[13] 14.00% [7],[9],[13] 14.00% [7],[9],[13] 14.00% [7],[9],[13] 14.00% [2],[3],[19] 14.00% [2],[3],[19] 14.00% [2],[3],[19]  
Investment interest rate [2],[3],[5],[19]               12.85% 12.85% 12.85%  
Principal   $ 2,594,000 [7],[9],[11],[13]           $ 2,782,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: Win Brands Group LLC, Housewares & Specialties, Warrants                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   46,000 [7],[9],[20]           46,000 [2],[3]      
Investments at fair value   $ 0 [7],[9],[20]           $ 0 [2],[3]      
Investment owned, balance (in shares) | shares   4,871 [7],[9],[20] 4,871 [7],[9],[20] 4,871 [7],[9],[20] 4,871 [7],[9],[20] 4,871 [7],[9],[20] 4,871 [7],[9],[20] 4,871 [2],[3] 4,871 [2],[3] 4,871 [2],[3]  
Investment, Identifier [Axis]: Win Brands Group LLC, Integrated Telecommunication Services, Common Stock                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3]               $ 2,057,000      
Investments at fair value [2],[3]               $ 1,657,000      
Investment owned, balance (in shares) | shares [2],[3]               127,452 127,452 127,452  
Investment, Identifier [Axis]: X Holdings Corp., Interactive Media & Services, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [9]   $ 4,876,000                  
Investments at fair value [9]   $ 5,023,000                  
Investment interest rate [9],[10]   9.50% 9.50% 9.50% 9.50% 9.50% 9.50%        
Principal [9],[11]   $ 5,000,000                  
Investment, Identifier [Axis]: X Holdings Corp., Interactive Media & Services, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [9],[13]   6,233,000                  
Investments at fair value [9],[13]   $ 6,122,000                  
Investment, basis spread, variable rate (as a percent) [9],[13]   6.50% 6.50% 6.50% 6.50% 6.50% 6.50%        
Investment interest rate [9],[10],[13]   10.96% 10.96% 10.96% 10.96% 10.96% 10.96%        
Principal [9],[11],[13]   $ 6,236,000                  
Investment, Identifier [Axis]: Zep Inc., Specialty Chemicals, First Lien Term Loan                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3],[19]               $ 19,407,000      
Investments at fair value [2],[3],[19]               $ 19,431,000      
Investment, basis spread, variable rate (as a percent) [2],[3],[19]               4.00% 4.00% 4.00%  
Investment interest rate [2],[3],[5],[19]               8.25% 8.25% 8.25%  
Principal [2],[3],[6],[19]               $ 19,431,000      
Investment, Identifier [Axis]: athenahealth Group Inc., Health Care Technology, Preferred Equity                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   21,617,000 [7],[9],[20]           20,789,000 [2],[3]      
Investments at fair value   $ 31,086,000 [7],[9],[20]           $ 24,326,000 [2],[3]      
Investment owned, balance (in shares) | shares   21,523 [7],[9],[20] 21,523 [7],[9],[20] 21,523 [7],[9],[20] 21,523 [7],[9],[20] 21,523 [7],[9],[20] 21,523 [7],[9],[20] 21,523 [2],[3] 21,523 [2],[3] 21,523 [2],[3]  
Investment, Identifier [Axis]: iCIMs, Inc., Application Software, First Lien Revolver                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   $ 607,000 [7],[8],[9],[13]           $ 643,000 [1],[2],[3],[19]      
Investments at fair value   $ 577,000 [7],[8],[9],[13]           $ 607,000 [1],[2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.75% [7],[8],[9],[13] 5.75% [7],[8],[9],[13] 5.75% [7],[8],[9],[13] 5.75% [7],[8],[9],[13] 5.75% [7],[8],[9],[13] 5.75% [7],[8],[9],[13] 5.75% [1],[2],[3],[19] 5.75% [1],[2],[3],[19] 5.75% [1],[2],[3],[19]  
Investment interest rate   10.08% [7],[8],[9],[10],[13] 10.08% [7],[8],[9],[10],[13] 10.08% [7],[8],[9],[10],[13] 10.08% [7],[8],[9],[10],[13] 10.08% [7],[8],[9],[10],[13] 10.08% [7],[8],[9],[10],[13] 10.67% [1],[2],[3],[5],[19] 10.67% [1],[2],[3],[5],[19] 10.67% [1],[2],[3],[5],[19]  
Principal   $ 632,000 [7],[8],[9],[11],[13]           $ 678,000 [1],[2],[3],[6],[19]      
Investment, Identifier [Axis]: iCIMs, Inc., Application Software, First Lien Term Loan 1                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   25,346,000 [7],[9],[13]           25,261,000 [2],[3],[19]      
Investments at fair value   $ 24,880,000 [7],[9],[13]           $ 24,696,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   5.75% [7],[9],[13] 5.75% [7],[9],[13] 5.75% [7],[9],[13] 5.75% [7],[9],[13] 5.75% [7],[9],[13] 5.75% [7],[9],[13] 5.75% [2],[3],[19] 5.75% [2],[3],[19] 5.75% [2],[3],[19]  
Investment interest rate   10.07% [7],[9],[10],[13] 10.07% [7],[9],[10],[13] 10.07% [7],[9],[10],[13] 10.07% [7],[9],[10],[13] 10.07% [7],[9],[10],[13] 10.07% [7],[9],[10],[13] 10.67% [2],[3],[5],[19] 10.67% [2],[3],[5],[19] 10.67% [2],[3],[5],[19]  
Principal   $ 25,511,000 [7],[9],[11],[13]           $ 25,491,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: iCIMs, Inc., Application Software, First Lien Term Loan 2                      
Schedule of Investments [Line Items]                      
Investment owned, at cost   3,616,000 [7],[9],[13]           3,609,000 [2],[3],[19]      
Investments at fair value   $ 3,592,000 [7],[9],[13]           $ 3,581,000 [2],[3],[19]      
Investment, basis spread, variable rate (as a percent)   6.25% [7],[9],[13] 6.25% [7],[9],[13] 6.25% [7],[9],[13] 6.25% [7],[9],[13] 6.25% [7],[9],[13] 6.25% [7],[9],[13] 6.25% [2],[3],[19] 6.25% [2],[3],[19] 6.25% [2],[3],[19]  
Investment interest rate   10.57% [7],[9],[10],[13] 10.57% [7],[9],[10],[13] 10.57% [7],[9],[10],[13] 10.57% [7],[9],[10],[13] 10.57% [7],[9],[10],[13] 10.57% [7],[9],[10],[13] 11.17% [2],[3],[5],[19] 11.17% [2],[3],[5],[19] 11.17% [2],[3],[5],[19]  
Principal   $ 3,636,000 [7],[9],[11],[13]           $ 3,636,000 [2],[3],[6],[19]      
Investment, Identifier [Axis]: iCIMs, Inc., Application Software, First Lien Term Loan 3                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [1],[2],[3],[19]               0      
Investments at fair value [1],[2],[3],[19]               $ 0      
Investment, basis spread, variable rate (as a percent) [1],[2],[3],[19]               6.25% 6.25% 6.25%  
Principal [1],[2],[3],[6],[19]               $ 0      
Investment, Identifier [Axis]: scPharmaceuticals Inc., Pharmaceuticals, Warrants                      
Schedule of Investments [Line Items]                      
Investment owned, at cost [2],[3]               175,000      
Investments at fair value [2],[3]               $ 121,000      
Investment owned, balance (in shares) | shares [2],[3]               53,700 53,700 53,700  
Non-control/Non-affiliate investments                      
Schedule of Investments [Line Items]                      
Investment owned, percent of net assets (as a percent)   175.00% 175.00% 175.00% 175.00% 175.00% 175.00% 181.20% 181.20% 181.20%  
Investment owned, at cost   $ 2,639,069,000 [9]           $ 2,733,843,000 [2]      
Investments at fair value   $ 2,565,035,000 [9]           $ 2,696,198,000 [2]      
Earnout Share Vesting, Tranche Two                      
Schedule of Investments [Line Items]                      
Investment owned, balance, shares, VWAP threshold (in dollars per share) | $ / shares   $ 20.00           $ 20.00      
Investment owned, balance, shares, VWAP number of trading days 10 days 10 days                  
Investment owned, balance, shares, VWAP, number of consecutive trading days 20 days 20 days                  
Minimum                      
Schedule of Investments [Line Items]                      
Debt instrument, floor interest rate (as a percent)   0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00%  
Maximum                      
Schedule of Investments [Line Items]                      
Debt instrument, floor interest rate (as a percent)   3.00% 3.00% 3.00% 3.00% 3.00% 3.00% 3.00% 3.00% 3.00%  
[1] Investment had undrawn commitments. Unamortized fees are classified as unearned income which reduces cost basis, which may result in a negative cost basis. A negative fair value may result from the unfunded commitment being valued below par.
[2] Non-Control/Non-Affiliate Investments are investments that are neither Control Investments nor Affiliate Investments.
[3] As of September 30, 2024, these investments were categorized as Level 3 within the fair value hierarchy established by ASC 820.
[4] This investment represents a participation interest in the underlying securities shown.
[5] Interest rates may be adjusted from period to period on certain term loans and revolvers. These rate adjustments may be either temporary in nature due to tier pricing arrangements or financial or payment covenant violations in the original credit agreements or permanent in nature per loan amendment or waiver documents.
[6] Principal includes accumulated PIK interest and is net of repayments, if any. “£” signifies the investment is denominated in British Pounds. "€" signifies the investment is denominated in Euros. All other investments are denominated in U.S. dollars.
[7] As of September 30, 2025, these investments were categorized as Level 3 within the fair value hierarchy established by Financial Accounting Standards Board ("FASB") guidance under Accounting Standards Codification ("ASC") Topic 820, Fair Value Measurements and Disclosures ("ASC 820").
[8] Investment had undrawn commitments. Unamortized fees are classified as unearned income which reduces cost basis, which may result in a negative cost basis. A negative fair value may result from the unfunded commitment being valued below par.
[9] Non-Control/Non-Affiliate Investments are investments that are neither Control Investments nor Affiliate Investments.
[10] Interest rates may be adjusted from period to period on certain term loans and revolvers. These rate adjustments may be either temporary in nature due to tier pricing arrangements or financial or payment covenant violations in the original credit agreements or permanent in nature per loan amendment or waiver documents.
[11] Principal includes accumulated payment in kind ("PIK") interest and is net of repayments, if any. “£” signifies the investment is denominated in British Pounds. "€" signifies the investment is denominated in Euros. "C$" signifies the investment is denominated in Canadian dollar. "¥" signifies the investment is denominated in Japanese Yen. "kr" signifies the investment is denominated in Swedish Kronor. All other investments are denominated in U.S. dollars.
[12] Investment is not a "qualifying asset" as defined under Section 55(a) of the Investment Company Act. Under the Investment Company Act, the Company may not acquire any non-qualifying asset unless, at the time the acquisition is made, qualifying assets represent at least 70% of the Company's total assets. As of September 30, 2025, qualifying assets represented 74.1% of the Company's total assets and non-qualifying assets represented 25.9% of the Company's total assets.
[13] The interest rate on the principal balance outstanding for most of the floating rate loans is indexed to the secured overnight financing rate ("SOFR"), the euro interbank offered rate ("EURIBOR" or "E"), the sterling overnight index average ("SONIA"), the Tokyo overnight average rate ("TONA"), the Canadian overnight repo rate average ("CORRA"), the Stockholm interbank offered rate ("STIBOR"), and/or an alternate base rate (e.g., prime rate), which typically resets semi-annually, quarterly, or monthly at the borrower's option. The borrower may also elect to have multiple interest reset periods for each loan. For each of these loans, the Company has provided the applicable margin over the reference rate based on each respective credit agreement and the cash interest rate as of period end. As of September 30, 2025, the reference rates for the Company's variable rate loans were the 30-day SOFR at 4.13%, the 90-day SOFR at 3.98%, the 180-day SOFR at 3.85%, the PRIME at 7.25%, the SONIA at 4.19%, the TONA at 0.75%, the 30-day CORRA at 2.54%, the 90-day STIBOR at 1.89%, the 30-day EURIBOR at 1.93%, the 90-day EURIBOR at 2.03% and the 180-day EURIBOR at 2.10%. Most loans include an interest floor, which generally ranges from 0% to 3.00%. SOFR and SONIA based contracts may include a credit spread adjustment that is charged in addition to the base rate and the stated spread.
[14] This investment represents a revenue interest financing term loan in which the Company receives periodic interest payments based on a percentage of revenues earned at the respective portfolio company over the life of the loan.
[15] Investment is not a "qualifying asset" as defined under Section 55(a) of the Investment Company Act. Under the Investment Company Act, the Company may not acquire any non-qualifying asset unless, at the time the acquisition is made, qualifying assets represent at least 70% of the Company's total assets. As of September 30, 2024, qualifying assets represented 74.4% of the Company's total assets and non-qualifying assets represented 25.6% of the Company's total assets.
[16] This investment represents a revenue interest financing term loan in which the Company receives periodic interest payments based on a percentage of revenues earned at the respective portfolio company over the life of the loan.
[17] This investment was on non-accrual status as of September 30, 2025.
[18] This investment was on non-accrual status as of September 30, 2024.
[19] The interest rate on the principal balance outstanding for most of the floating rate loans is indexed to SOFR, EURIBOR, SONIA and/or an alternate base rate (e.g., prime rate), which typically resets semi-annually, quarterly, or monthly at the borrower's option. The borrower may also elect to have multiple interest reset periods for each loan. For each of these loans, the Company has provided the applicable margin over the reference rate based on each respective credit agreement and the cash interest rate as of period end. As of September 30, 2024, the reference rates for the Company's variable rate loans were the 30-day SOFR at 4.85%, the 90-day SOFR at 4.59%, the 180-day SOFR at 4.25%, the PRIME at 8.00%, the SONIA at 5.50%, the 90-day EURIBOR at 3.54% and the 180-day EURIBOR at 3.11%. Most loans include an interest floor, which generally ranges from 0% to 3.00%. SOFR and SONIA based contracts may include a credit spread adjustment that is charged in addition to the base rate and the stated spread.
[20] Security acquired in transaction exempt from registration under the Securities Act of 1933, as amended (the "Securities Act") and may be deemed to be “restricted security” under the Securities Act. As of September 30, 2025, the aggregate fair value of these securities is $153,067, or 10.4% of the Company’s net assets. The acquisition dates of the restricted securities are as follows:
Portfolio CompanyType of InvestmentAcquisition Date
ADC Therapeutics SACommon Stock4/25/2024
ADC Therapeutics SAWarrants8/15/2022
AIP RD Buyer Corp.Common Stock12/23/2021
All Web Leads, Inc.Common Stock3/29/2024
Alvotech Holdings S.A.Common Stock12/14/2018
Alvotech Holdings S.A.Common Stock12/14/2018
Assembled Brands Capital LLCCommon Stock10/17/2018
Assembled Brands Capital LLCWarrants9/10/2019
athenahealth Group Inc.Preferred Equity2/15/2022
BioXcel Therapeutics, Inc.Common Stock11/25/2024
BioXcel Therapeutics, Inc.Warrants4/28/2022
BioXcel Therapeutics, Inc.Warrants3/20/2024
Blumenthal Temecula, LLCPreferred Equity3/25/2021
Blumenthal Temecula, LLCPreferred Equity3/25/2021
Blumenthal Temecula, LLCCommon Stock3/25/2021
C5 Technology Holdings, LLCCommon Stock10/11/2013
C5 Technology Holdings, LLCPreferred Equity10/11/2013
Continental Intermodal Group LPPreferred Equity2/2/2024
Continental Intermodal Group LPCommon Stock1/28/2020
Conviva Inc.Preferred Equity2/25/2021
Delta Leasing SPV II LLCPreferred Equity8/31/2022
Delta Leasing SPV II LLCCommon Stock8/31/2022
Delta Leasing SPV II LLCWarrants8/31/2022
Dialyze Holdings, LLCWarrants8/4/2021
Dominion Diagnostics, LLCCommon Stock12/21/2012
Eyesouth Eye Care Holdco LLCCommon Stock10/7/2022
Fairbridge Strategic Capital Funding LLCWarrants11/24/2021
Fortress Biotech, Inc.Warrants8/27/2020
JN Bidco LLCCommon Stock8/12/2024
Mesoblast, Inc.Warrants12/20/2021
NN, Inc.Warrants3/3/2023
NN, Inc.Warrants6/30/2023
OCSI Glick JV LLCMembership Interest3/19/2021
OTG Management, LLCCommon Stock9/1/2021
Paulus Holdings Public Limited CompanyPreferred Equity10/14/2022
Paulus Holdings Public Limited CompanyWarrants10/14/2022
PetVet Care Centers, LLC Preferred Equity11/14/2023
Pluralsight, LLCCommon Stock8/22/2024
PRGX Global, Inc.Common Stock3/2/2021
RumbleOn, Inc.Warrants8/31/2021
Scilex Holding CoCommon Stock1/28/2021
Senior Loan Fund JV I, LLCMembership Interest12/23/2016
Seres Therapeutics, Inc.Warrants4/27/2023
SIO2 Medical Products, Inc.Common Stock8/3/2023
SIO2 Medical Products, Inc.Warrants4/3/2023
Sorrento Therapeutics, Inc.Common Stock1/28/2021
SVP-Singer Holdings Inc.Common Stock12/31/2024
Telestream 2 LLCCommon Stock6/7/2025
The AveryMembership Interest12/16/2023
Thrasio, LLCCommon Stock6/18/2024
Win Brands Group LLCWarrants1/25/2021
[21] Affiliate Investments generally are defined by the Investment Company Act as investments in companies in which the Company owns between 5% and 25% of the voting securities.
[22] Affiliate Investments generally are defined by the Investment Company Act as investments in companies in which the Company owns between 5% and 25% of the voting securities.
[23] This investment represents Seller Earn Out Shares in Alvotech Holdings S.A. The Seller Earn Out Shares will vest if, at any time through June 16, 2027, the Alvotech Holdings S.A. common share price is at or above a volume weighted average price ("VWAP") of $20.00 per share for any ten trading days within any twenty trading day period.
[24] This investment represents Seller Earn Out Shares in Alvotech Holdings S.A. The Seller Earn Out Shares will vest if, at any time through June 16, 2027, the Alvotech Holdings S.A. common share price is at or above a VWAP of $20.00 per share for any ten trading days within any twenty trading day period.
[25] Income producing through payment of dividends or distributions.
[26] As defined in the Investment Company Act, the Company is deemed to be both an "Affiliated Person" of and to "Control" these portfolio companies 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 (including through a management agreement). See Schedule 12-14 in the accompanying notes to the Consolidated Financial Statements for transactions during the year ended September 30, 2025 in which the issuer was both an Affiliated Person and a portfolio company that the Company is deemed to control.
[27] Control Investments generally are defined by the Investment Company Act of 1940, as amended (the "Investment Company Act"), as investments in companies in which the Company owns more than 25% of the voting securities or maintains greater than 50% of the board representation.
[28] As defined in the Investment Company Act, the Company is deemed to be both an "Affiliated Person" of and to "Control" these portfolio companies 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 (including through a management agreement). See Schedule 12-14 in the accompanying notes to the Consolidated Financial Statements for transactions during the year ended September 30, 2024 in which the issuer was both an Affiliated Person and a portfolio company that the Company is deemed to control.
[29] Control Investments generally are defined by the Investment Company Act, as investments in companies in which the Company owns more than 25% of the voting securities or maintains greater than 50% of the board representation.
[30] This investment was renamed during the three months ended June 30, 2024. For the periods prior to June 30, 2024, this investment was referenced as SCP Eye Care Services, LLC.
[31] Income producing through payment of dividends or distributions.
[32] See Note 3 in the accompanying notes to the Consolidated Financial Statements for portfolio composition of the Company's joint ventures.
[33] This investment was valued using net asset value as a practical expedient for fair value. Consistent with ASC 820, these investments are excluded from the hierarchical levels.
[34] See Note 3 in the accompanying notes to the Consolidated Financial Statements for portfolio composition of the Company's joint ventures.
[35] This investment was valued using net asset value as a practical expedient for fair value. Consistent with ASC 820, these investments are excluded from the hierarchical levels.
[36] This investment represents a credit default swap that functions, in substance, like a credit linked note and represents a credit risk transfer for a pool of reference assets owned by a bank. The Company fully funded margin up front and in return the Company receives periodic interest payments. The Company’s risk of loss is limited to the principal amount disclosed herein. The reference assets are primarily composed of investment grade corporate debt. The Company may be exposed to counterparty risk, which could make it difficult for the Company to collect on obligations, thereby resulting in potentially significant losses. In addition, the Company only has a contractual relationship with the counterparty bank, and not with the reference obligors of the reference assets. Accordingly, the Company generally may have no right to directly enforce compliance by the reference obligors with the terms of the reference assets. The Company will not directly benefit from the reference assets and will not have the benefit of the remedies that would normally be available to a holder of such reference assets. In addition, in the event of the insolvency of the counterparty bank, the Company may be treated as a general creditor of such counterparty bank, and will not have any claim with respect to the reference assets.