Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE HIERARCHY FOR INVESTMENTS???PORTFOLIO COMPOSITION - Schedule of Percentage of Portfolio Investments by Industry Sector (Details)

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FAIR VALUE HIERARCHY FOR INVESTMENTS—PORTFOLIO COMPOSITION - Schedule of Percentage of Portfolio Investments by Industry Sector (Details) - Industry Concentration Risk
 9 Months Ended 12 Months Ended
Sep. 30, 2023
Dec. 31, 2022
Investment Owned, At Cost    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 100.00% 100.00%
Investment Owned, At Cost | Internet Software & Services    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 8.20% 8.00%
Investment Owned, At Cost | Machinery    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 7.00% 7.40%
Investment Owned, At Cost | Commercial Services & Supplies    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 6.20% 6.70%
Investment Owned, At Cost | Professional Services    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 6.20% 4.20%
Investment Owned, At Cost | Construction & Engineering    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 5.70% 5.80%
Investment Owned, At Cost | Health Care Providers & Services    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 5.10% 4.70%
Investment Owned, At Cost | IT Services    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 4.90% 3.30%
Investment Owned, At Cost | Diversified Consumer Services    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 4.70% 4.50%
Investment Owned, At Cost | Distributors    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 4.30% 5.10%
Investment Owned, At Cost | Textiles, Apparel & Luxury Goods    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 3.20% 1.90%
Investment Owned, At Cost | Leisure Equipment & Products    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 3.10% 4.50%
Investment Owned, At Cost | Energy Equipment & Services    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 3.10% 3.70%
Investment Owned, At Cost | Tobacco    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 3.00% 3.10%
Investment Owned, At Cost | Computers & Peripherals    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 2.70% 2.20%
Investment Owned, At Cost | Media    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 2.40% 2.40%
Investment Owned, At Cost | Specialty Retail    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 2.10% 3.20%
Investment Owned, At Cost | Software    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 2.00% 1.90%
Investment Owned, At Cost | Electrical Equipment    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 1.90% 1.00%
Investment Owned, At Cost | Building Products    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 1.70% 1.90%
Investment Owned, At Cost | Aerospace & Defense    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 1.70% 2.30%
Investment Owned, At Cost | Containers & Packaging    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 1.70% 2.60%
Investment Owned, At Cost | Diversified Telecommunication Services    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 1.60% 1.90%
Investment Owned, At Cost | Auto Components    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 1.60% 1.70%
Investment Owned, At Cost | Food Products    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 1.50% 1.60%
Investment Owned, At Cost | Electronic Equipment, Instruments & Components    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 1.50% 1.60%
Investment Owned, At Cost | Communications Equipment    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 1.50% 1.80%
Investment Owned, At Cost | Diversified Financial Services    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 1.40% 1.50%
Investment Owned, At Cost | Internet & Catalog Retail    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 1.30% 1.30%
Investment Owned, At Cost | Health Care Equipment & Supplies    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 1.30% 1.30%
Investment Owned, At Cost | Food & Staples Retailing    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 1.20% 1.20%
Investment Owned, At Cost | Hotels, Restaurants & Leisure    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 1.10% 1.10%
Investment Owned, At Cost | Chemicals    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 1.00% 1.10%
Investment Owned, At Cost | Household Products    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 1.00% 0.40%
Investment Owned, At Cost | Other    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 3.10% 3.10%
Investment Owned, At Fair Value    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 100.00% 100.00%
Investment Owned, At Fair Value | Internet Software & Services    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 6.80% 6.80%
Investment Owned, At Fair Value | Machinery    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 8.10% 8.40%
Investment Owned, At Fair Value | Commercial Services & Supplies    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 5.10% 6.10%
Investment Owned, At Fair Value | Professional Services    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 6.70% 3.80%
Investment Owned, At Fair Value | Construction & Engineering    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 5.70% 5.70%
Investment Owned, At Fair Value | Health Care Providers & Services    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 4.80% 4.30%
Investment Owned, At Fair Value | IT Services    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 4.50% 3.10%
Investment Owned, At Fair Value | Diversified Consumer Services    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 7.00% 6.80%
Investment Owned, At Fair Value | Distributors    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 4.60% 5.50%
Investment Owned, At Fair Value | Textiles, Apparel & Luxury Goods    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 2.60% 1.80%
Investment Owned, At Fair Value | Leisure Equipment & Products    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 2.70% 4.00%
Investment Owned, At Fair Value | Energy Equipment & Services    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 2.80% 2.70%
Investment Owned, At Fair Value | Tobacco    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 3.20% 3.40%
Investment Owned, At Fair Value | Computers & Peripherals    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 4.00% 3.00%
Investment Owned, At Fair Value | Media    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 2.70% 3.00%
Investment Owned, At Fair Value | Specialty Retail    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 2.70% 3.50%
Investment Owned, At Fair Value | Software    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 2.10% 2.10%
Investment Owned, At Fair Value | Electrical Equipment    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 2.00% 1.00%
Investment Owned, At Fair Value | Building Products    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 1.50% 1.90%
Investment Owned, At Fair Value | Aerospace & Defense    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 1.60% 2.20%
Investment Owned, At Fair Value | Containers & Packaging    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 1.90% 2.80%
Investment Owned, At Fair Value | Diversified Telecommunication Services    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 1.40% 1.80%
Investment Owned, At Fair Value | Auto Components    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 1.50% 1.60%
Investment Owned, At Fair Value | Food Products    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 1.60% 1.80%
Investment Owned, At Fair Value | Diversified Financial Services    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 1.40% 1.70%
Investment Owned, At Fair Value | Internet & Catalog Retail    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 1.20% 1.30%
Investment Owned, At Fair Value | Air Freight & Logistics    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 1.10% 0.90%
Investment Owned, At Fair Value | Construction Materials    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 1.00% 1.00%
Investment Owned, At Fair Value | Health Care Equipment & Supplies    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 1.00% 1.00%
Investment Owned, At Fair Value | Food & Staples Retailing    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 0.80% 1.10%
Investment Owned, At Fair Value | Chemicals    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 0.90% 1.10%
Investment Owned, At Fair Value | Other    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk (as a percent) 5.00% 4.80%