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INVESTMENTS - Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation (Details) - USD ($) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Mar. 31, 2024 | Mar. 31, 2023
Old World Christmas, Inc. |  |  |  |
New investments, repayments and settlements: |  |  |  |
Realized gain (loss) on preferred equity |  | $ 300 |  |
Total |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance | $ 899,138 | 800,047 | $ 920,486 | $ 753,516
New investments, repayments and settlements: |  |  |  |
Issuances / originations | 598 | 47,975 |  |
Settlements / repayments | (3,000) | 0 |  |
Sales | 0 | (1,775) |  |
Transfers | 0 | 0 |  |
Ending balance | 899,138 | 800,047 |  |
Total | Debt and Equity Securities, Realized Gain (Loss) |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Total gain (loss) | 0 | 1,155 |  |
Total | Debt and Equity Securities, Unrealized Gain (Loss) |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Total gain (loss) | (18,946) | (731) |  |
Reversal of previously recorded (appreciation) depreciation upon realization | 0 | (93) |  |
Secured First Lien Debt |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance | 463,219 | 452,215 | 474,856 | 437,517
New investments, repayments and settlements: |  |  |  |
Issuances / originations | 598 | 14,700 |  |
Settlements / repayments | (3,000) | 0 |  |
Sales | 0 | 0 |  |
Transfers | 0 | 0 |  |
Ending balance | 463,219 | 452,215 |  |
Secured First Lien Debt | Debt and Equity Securities, Realized Gain (Loss) |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Total gain (loss) | 0 | 0 |  |
Secured First Lien Debt | Debt and Equity Securities, Unrealized Gain (Loss) |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Total gain (loss) | (9,235) | (2) |  |
Reversal of previously recorded (appreciation) depreciation upon realization | 0 | 0 |  |
Secured Second Lien Debt |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance | 137,827 | 104,794 | 138,703 | 75,734
New investments, repayments and settlements: |  |  |  |
Issuances / originations | 0 | 25,000 |  |
Settlements / repayments | 0 | 0 |  |
Sales | 0 | 0 |  |
Transfers | 0 | 0 |  |
Ending balance | 137,827 | 104,794 |  |
Secured Second Lien Debt | Debt and Equity Securities, Realized Gain (Loss) |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Total gain (loss) | 0 | 0 |  |
Secured Second Lien Debt | Debt and Equity Securities, Unrealized Gain (Loss) |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Total gain (loss) | (876) | 4,060 |  |
Reversal of previously recorded (appreciation) depreciation upon realization | 0 | 0 |  |
Preferred Equity |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance | 212,591 | 214,258 | 213,480 | 222,585
New investments, repayments and settlements: |  |  |  |
Issuances / originations | 0 | 3,275 |  |
Settlements / repayments | 0 | 0 |  |
Sales | 0 | (273) |  |
Transfers | 0 | 0 |  |
Ending balance | 212,591 | 214,258 |  |
Preferred Equity | Debt and Equity Securities, Realized Gain (Loss) |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Total gain (loss) | 0 | 273 |  |
Preferred Equity | Debt and Equity Securities, Unrealized Gain (Loss) |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Total gain (loss) | (889) | (11,602) |  |
Reversal of previously recorded (appreciation) depreciation upon realization | 0 | 0 |  |
Common Equity/ Equivalents |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance | 85,501 | 28,780 | $ 93,447 | $ 17,680
New investments, repayments and settlements: |  |  |  |
Issuances / originations | 0 | 5,000 |  |
Settlements / repayments | 0 | 0 |  |
Sales | 0 | (1,502) |  |
Transfers | 0 | 0 |  |
Ending balance | 85,501 | 28,780 |  |
Common Equity/ Equivalents | Debt and Equity Securities, Realized Gain (Loss) |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Total gain (loss) | 0 | 882 |  |
Common Equity/ Equivalents | Debt and Equity Securities, Unrealized Gain (Loss) |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Total gain (loss) | (7,946) | 6,813 |  |
Reversal of previously recorded (appreciation) depreciation upon realization | $ 0 | $ (93) |  |

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