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Note 3 - Related Party Transactions (Details Textual) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2026 | Jun. 30, 2025 | Jun. 30, 2026 | Jun. 30, 2025 | Dec. 31, 2025 | Mar. 31, 2025
Management Fee Payable | $ 1,012 |  | $ 1,012 |  | $ 975 |
Management Fee Expense | 3,147 | $ 2,959 | 6,267 | $ 6,139 |  |
Administrative Fees Expense | 426 | 420 | $ 1,066 | 826 |  |
Equity Purchase Agreement [Member] | Monroe Capital Intermediate Holdings, LLC [Member] | Momentum US Bidco LLC [Member] |  |  |  |  |  |
Ownership Percentage |  |  |  |  |  | 75.00%
Investment Management Agreement [Member] |  |  |  |  |  |
Base Management Fee, Annual, Percent |  |  | 2.00% |  |  |
Base Management Fee, Annual, Percent, Gross Assets Exceeding $250 Million |  |  | 1.60% |  |  |
Management Fee Payable | 1,000 |  | $ 1,000 |  |  |
Management Fee Expense | 3,100 | 3,000 | $ 6,300 | 6,100 |  |
Incentive Fee to Pre-incentive Net Investment Income |  |  | 20.00% |  |  |
Pre-Incentive Fee Net Investment Income, Hurdle Rate |  |  | 1.75% |  |  |
Pre-Incentive Fee Net Investment Income, Hurdle Rate, Annualized |  |  | 7.00% |  |  |
Pre-Incentive Fee Net Investment Income, Catch-up, Percent |  |  | 100.00% |  |  |
Pre-Incentive Fee Net Investment Income, Maximum Rate to Trigger Catch-up |  |  | 2.1875% |  |  |
Pre-Incentive Fee Net Investment Income, Maximum Rate to Trigger Catch-up, Annualized |  |  | 8.75% |  |  |
Incentive Fee Expense | 0 |  | $ 1,800 | 0 |  |
Incentive Fee Cap and Deferral Mechanism Reduction to Expense | 400 | $ 2,300 | 800 | 4,400 |  |
Incentive Fee Payable | 0 |  | 0 |  |  |
Investment Company, Incentive Fee Waived | 0 |  |  |  |  |
Investment Company, Incentive Fee Payable Expired | 3,100 |  | 3,300 |  |  |
Administration Agreement [Member] |  |  |  |  |  |
Administrative Fees Expense | 400 |  | 1,100 | $ 800 |  |
Administrative Fees Payable | 400 |  | 400 |  | $ 300 |
Merger Agreement Fee Waiver [Member] |  |  |  |  |  |
Investment Company, Contractual and Voluntary Fees Waived |  |  | 4,000 |  |  |
Base Management and Incentive Fees, Amount Waived per Quarter | $ 1,000 |  | $ 1,000 |  |  |

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