FAIR VALUE MEASUREMENTS - Schedule of Valuation Techniques and Significant Unobservable Inputs Used in Level 3 Fair Value Measurements of Assets (Details) - Level 3	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value	$ 1,276,467,000	$ 395,231,000
First-Lien Debt | Yield Method
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value	$ 1,153,845,000	$ 282,615,000
First-Lien Debt | Yield Method | Low | Implied Discount Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0583	0.0613
First-Lien Debt | Yield Method | High | Implied Discount Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.1920	0.1648
First-Lien Debt | Yield Method | Weighted Average | Implied Discount Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0980	0.1088
First-Lien Debt | Market Approach
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value	$ 8,969,000	$ 3,166,000
First-Lien Debt | Market Approach | Low | EBITDA Multiple
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	8	7.5
First-Lien Debt | Market Approach | High | EBITDA Multiple
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	15.5	7.5
First-Lien Debt | Market Approach | Weighted Average | EBITDA Multiple
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	12.59	7.5
First-Lien Debt | Recent Transactions
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments valued using recent transactions	$ 107,270,000	$ 68,615,000
Subordinated Debt | Yield Method
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value	$ 95,793,000	$ 100,086,000
Subordinated Debt | Yield Method | Low | Implied Discount Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.1182	0.1157
Subordinated Debt | Yield Method | High | Implied Discount Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.2500	0.2063
Subordinated Debt | Yield Method | Weighted Average | Implied Discount Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.1520	0.1396
Subordinated Debt | Market Approach, EBITDA Multiple
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value	$ 1,765,000
Subordinated Debt | Market Approach, EBITDA Multiple | Low | EBITDA Multiple
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	14
Subordinated Debt | Market Approach, EBITDA Multiple | High | EBITDA Multiple
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	14
Subordinated Debt | Market Approach, EBITDA Multiple | Weighted Average | EBITDA Multiple
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	14
Subordinated Debt | Recent Transactions
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments valued using recent transactions	$ 5,435,000	$ 1,844,000
Equity Investments | Yield Method
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value	$ 657,000	$ 528,000
Equity Investments | Yield Method | Low | Implied Discount Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0800	0.0836
Equity Investments | Yield Method | High | Implied Discount Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.1606	0.1516
Equity Investments | Yield Method | Weighted Average | Implied Discount Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.1379	0.0835
Equity Investments | Market Approach
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value	$ 15,272,000
Equity Investments | Market Approach | Low | EBITDA Multiple
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	8
Equity Investments | Market Approach | High | EBITDA Multiple
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	22
Equity Investments | Market Approach | Weighted Average | EBITDA Multiple
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	12.98
Equity Investments | Market Approach, ARR Multiple
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value	$ 166,000
Equity Investments | Market Approach, ARR Multiple | Low | ARR Multiple
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	5	3.5
Equity Investments | Market Approach, ARR Multiple | High | ARR Multiple
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	5	3.5
Equity Investments | Market Approach, ARR Multiple | Weighted Average | ARR Multiple
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	5	3.5
Equity Investments | Market Approach, EBITDA Multiple
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value		$ 8,779,000
Equity Investments | Market Approach, EBITDA Multiple | Low | EBITDA Multiple
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input		8.5
Equity Investments | Market Approach, EBITDA Multiple | High | EBITDA Multiple
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input		19.5
Equity Investments | Market Approach, EBITDA Multiple | Weighted Average | EBITDA Multiple
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input		11.49
Equity Investments | Market Approach, EBITDA Multiple Two
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value		$ 57,000
Equity Investments | Market Approach, EBITDA Multiple Two | Low | EBITDA Multiple
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input		9
Equity Investments | Market Approach, EBITDA Multiple Two | High | EBITDA Multiple
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input		9
Equity Investments | Market Approach, EBITDA Multiple Two | Weighted Average | EBITDA Multiple
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input		9
Equity Investments | Recent Transactions
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments valued using recent transactions	$ 3,619,000	$ 860,000