Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE HIERARCHY FOR INVESTMENTS???PORTFOLIO COMPOSITION - Percentage of Portfolio Investments by Geographical Regions (Details)

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FAIR VALUE HIERARCHY FOR INVESTMENTS—PORTFOLIO COMPOSITION - Percentage of Portfolio Investments by Geographical Regions (Details) - Geographic Concentration Risk
 3 Months Ended 12 Months Ended
Mar. 31, 2023
Dec. 31, 2022
Investment Owned, At Cost    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk, percentage 100.00% 100.00%
Investment Owned, At Cost | West    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk, percentage 28.80% 28.50%
Investment Owned, At Cost | Northeast    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk, percentage 19.50% 19.00%
Investment Owned, At Cost | Southwest    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk, percentage 19.10% 20.10%
Investment Owned, At Cost | Midwest    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk, percentage 16.70% 16.30%
Investment Owned, At Cost | Southeast    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk, percentage 13.90% 14.00%
Investment Owned, At Cost | Other Non-United States    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk, percentage 1.60% 1.50%
Investment Owned, At Cost | Canada    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk, percentage 0.40% 0.60%
Investment Owned, At Fair Value    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk, percentage 100.00% 100.00%
Investment Owned, At Fair Value | West    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk, percentage 28.40% 28.70%
Investment Owned, At Fair Value | Northeast    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk, percentage 19.10% 18.80%
Investment Owned, At Fair Value | Southwest    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk, percentage 21.40% 21.40%
Investment Owned, At Fair Value | Midwest    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk, percentage 17.10% 16.60%
Investment Owned, At Fair Value | Southeast    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk, percentage 12.20% 12.40%
Investment Owned, At Fair Value | Other Non-United States    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk, percentage 1.50% 1.50%
Investment Owned, At Fair Value | Canada    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk, percentage 0.30% 0.60%