v3.25.3

Fair Value - Summary of Quantitative Information about the Company's Level 3 Asset and Liability (Parenthetical) (Details) $ in Thousands	Sep. 30, 2025 USD ($)	Dec. 31, 2024 USD ($)
Level 3 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments at fair value	$ 95,000	$ 107,600
EBITDA Multiple [Member] | Level 3 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments at fair value	194,189	172,028
Black-Scholes Model [Member] | Level 3 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments at fair value	134	293
Transaction Price [Member] | Level 3 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments at fair value	639	639
Recovery Analysis [Member] | Level 3 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments at fair value	2,040	2,040
Senior Secured Loans [Member] | Income Approach [Member] | Market Yield [Member] | Level 3 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments at fair value	$ 1,245,434	$ 1,095,842
Senior Secured Loans [Member] | Income Approach [Member] | Market Yield [Member] | Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Long Term Investments Measurement Input	8.4	8.5
Senior Secured Loans [Member] | Income Approach [Member] | Market Yield [Member] | Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Long Term Investments Measurement Input	19.8	18.5
Senior Secured Loans [Member] | Income Approach [Member] | Market Yield [Member] | Weighted Average [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Long Term Investments Measurement Input	11.5	11.8
Equipment Financing [Member] | Income Approach [Member] | Market Yield [Member] | Level 3 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments at fair value	$ 26,823	$ 73,416
Equipment Financing [Member] | Income Approach [Member] | Market Yield [Member] | Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Long Term Investments Measurement Input	8	8.5
Equipment Financing [Member] | Income Approach [Member] | Market Yield [Member] | Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Long Term Investments Measurement Input	8.5	9
Equipment Financing [Member] | Income Approach [Member] | Market Yield [Member] | Weighted Average [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Long Term Investments Measurement Input	8.1	9
Equipment Financing [Member] | Market Multiple [Member] | Comparable Multiple [Member] | Level 3 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments at fair value	$ 95,000	$ 107,600
Equipment Financing [Member] | Market Multiple [Member] | Comparable Multiple [Member] | Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Long Term Investments Measurement Input	1.1	1.2
Equipment Financing [Member] | Market Multiple [Member] | Comparable Multiple [Member] | Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Long Term Investments Measurement Input	1.3	1.5
Equipment Financing [Member] | Market Multiple [Member] | Comparable Multiple [Member] | Weighted Average [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Long Term Investments Measurement Input	1.2	1.5
Preferred Equity [Member] | Income Approach [Member] | Market Yield [Member] | Level 3 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments at fair value	$ 31,197	$ 29,182
Preferred Equity [Member] | Income Approach [Member] | Market Yield [Member] | Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Long Term Investments Measurement Input	9	9
Preferred Equity [Member] | Income Approach [Member] | Market Yield [Member] | Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Long Term Investments Measurement Input	9	9
Preferred Equity [Member] | Income Approach [Member] | Market Yield [Member] | Weighted Average [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Long Term Investments Measurement Input	9	9
Common Equity/Equity Interests/Warrants [Member] | Level 3 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments at fair value	$ 284,000
Common Equity/Equity Interests/Warrants [Member] | Market Multiple [Member] | Comparable Multiple [Member] | Level 3 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments at fair value	$ 481,002	$ 175,000
Common Equity/Equity Interests/Warrants [Member] | Market Multiple [Member] | Comparable Multiple [Member] | Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Long Term Investments Measurement Input	1.3	5.5
Common Equity/Equity Interests/Warrants [Member] | Market Multiple [Member] | Comparable Multiple [Member] | Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Long Term Investments Measurement Input	12.3	12.3
Common Equity/Equity Interests/Warrants [Member] | Market Multiple [Member] | Comparable Multiple [Member] | Weighted Average [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Long Term Investments Measurement Input	4	9.1
Common Equity/Equity Interests/Warrants [Member] | Market Approach [Member] | Return on Equity [Member] | Level 3 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments at fair value	$ 170,500	$ 451,470
Common Equity/Equity Interests/Warrants [Member] | Market Approach [Member] | Return on Equity [Member] | Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Long Term Investments Measurement Input	0	7.8
Common Equity/Equity Interests/Warrants [Member] | Market Approach [Member] | Return on Equity [Member] | Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Long Term Investments Measurement Input	24.4	21.7
Common Equity/Equity Interests/Warrants [Member] | Market Approach [Member] | Return on Equity [Member] | Weighted Average [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Long Term Investments Measurement Input	17.5	11.3

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