FAIR VALUE MEASUREMENTS - Fair Value Levels (Details) - USD ($) $ in Thousands |
Mar. 31, 2026 |
Dec. 31, 2025 |
||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||||||
| Fair Value | $ 596,389 | [1],[2] | $ 573,558 | [3],[4] | ||||||||
| Level 1 | ||||||||||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||||||
| Fair Value | 0 | 0 | ||||||||||
| Level 2 | ||||||||||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||||||
| Fair Value | 51,817 | 55,441 | ||||||||||
| Level 3 | ||||||||||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||||||
| Fair Value | 544,572 | 518,117 | ||||||||||
| Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] | ||||||||||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||||||
| Fair Value | 596,389 | 573,558 | ||||||||||
| First Lien Debt | Level 1 | ||||||||||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||||||
| Fair Value | 0 | 0 | ||||||||||
| First Lien Debt | Level 2 | ||||||||||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||||||
| Fair Value | 51,817 | 55,441 | ||||||||||
| First Lien Debt | Level 3 | ||||||||||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||||||
| Fair Value | 542,784 | 516,333 | ||||||||||
| First Lien Debt | Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] | ||||||||||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||||||
| Fair Value | 594,601 | 571,774 | ||||||||||
| Other Debt Investments | Level 1 | ||||||||||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||||||
| Fair Value | 0 | 0 | ||||||||||
| Other Debt Investments | Level 2 | ||||||||||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||||||
| Fair Value | 0 | 0 | ||||||||||
| Other Debt Investments | Level 3 | ||||||||||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||||||
| Fair Value | 667 | 689 | ||||||||||
| Other Debt Investments | Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] | ||||||||||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||||||
| Fair Value | 667 | 689 | ||||||||||
| Equity | Level 1 | ||||||||||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||||||
| Fair Value | 0 | 0 | ||||||||||
| Equity | Level 2 | ||||||||||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||||||
| Fair Value | 0 | 0 | ||||||||||
| Equity | Level 3 | ||||||||||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||||||
| Fair Value | 1,121 | 1,095 | ||||||||||
| Equity | Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] | ||||||||||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||||||
| Fair Value | $ 1,121 | $ 1,095 | ||||||||||
| ||||||||||||