RELATED PARTY TRANSACTIONS - Base Management Subordinated Incentive Fees (Details) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 31, 2025 |
Mar. 31, 2024 |
|
| Related Party Transaction [Line Items] | ||
| Base management fees | $ 4,972 | $ 5,028 |
| Investment Company, Contractual Fee Waived | 0 | (2,111) |
| Related Party | Advisory Agreement - Base Management Fees | MSC Income | ||
| Related Party Transaction [Line Items] | ||
| Base management fees | 4,972 | 5,028 |
| Related Party | Advisory Agreement - Subordinated Incentive Fees | MSC Income | ||
| Related Party Transaction [Line Items] | ||
| Base management fees | 2,023 | 3,637 |
| Related Party | Advisory Agreement - Incentive Fees, Capital Gains Fees | MSC Income | ||
| Related Party Transaction [Line Items] | ||
| Base management fees | 0 | 0 |
| Related Party | Advisory Agreement - Internal Administrative Services | MSC Income | ||
| Related Party Transaction [Line Items] | ||
| Base management fees | 174 | 2,267 |
| Investment Company, Contractual Fee Waived | $ 0 | $ (2,111) |