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v3.25.2

Note 2 - Basis of Presentation and Significant Accounting Policies (Details Textual) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended | 18 Months Ended | 50 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2025 USD ($) shares | Mar. 31, 2025 USD ($) | Jun. 30, 2024 USD ($) shares | Mar. 31, 2024 USD ($) | Jun. 30, 2025 USD ($) shares | Jun. 30, 2024 USD ($) shares | Jun. 30, 2025 USD ($) | Jun. 30, 2025 USD ($) $ / shares shares | Dec. 31, 2024 USD ($) | Apr. 26, 2024 USD ($) | Sep. 22, 2023 USD ($)
Investments, Nonaccrual, Interest Income | $ 200 |  | $ 0 |  | $ 200 | $ 0 |  |  |  |  |
Number of Investments with Payment in Kind Provisions | 3 |  |  |  | 3 |  | 3 | 3 | 5 |  |
Investment, Payment in Kind Interest Income, Amount | $ 200 |  | $ 400 |  | $ 500 | $ 1,700 |  |  |  |  |
Investment, Income Attributable to Non-cash Paid-in-Kind Interest, Percent | 1.00% |  | 1.10% |  | 1.40% | 3.30% |  |  |  |  |
Interest Income, Operating, Paid in Kind |  |  |  |  | $ 528 | $ 1,737 |  |  |  |  |
Investment, Nonaccrual, Income Not Received in Cash, Percent | 2.80% |  | 6.60% |  | 3.70% |  | 6.70% |  |  |  |
Debt Issuance Costs, Net | $ 8,900 |  |  |  | $ 8,900 |  | $ 8,900 | $ 8,900 | $ 8,900 |  |
Accumulated Amortization, Debt Issuance Costs | 8,600 |  |  |  | 8,600 |  | $ 8,600 | $ 8,600 | 7,200 |  |
Amortization of Debt Issuance Costs | $ 700 |  | $ 400 |  | $ 1,331 | 814 |  |  |  |  |
Federal Excise Tax, Percent | 4.00% |  |  |  | 4.00% |  | 4.00% | 4.00% |  |  |
Excise and Sales Taxes | $ 400 |  |  |  | $ 800 | 700 |  |  |  |  |
Unrecognized Tax Benefits | $ 0 |  |  |  | $ 0 |  | $ 0 | $ 0 | 0 |  |
Open Tax Year |  |  |  |  | 2025 2024 2023 2022 |  |  |  |  |  |
Proceeds from Issuance of Common Stock |  |  |  |  | $ 3,560 | $ 29,110 |  |  |  |  |
Share Repurchase Program, Remaining Authorized, Amount |  |  |  |  |  |  |  |  |  | $ 5,000 |
Stock Repurchased During Period, Shares (in shares) | shares | 0 |  | 0 |  | 0 | 0 |  | 167,465 |  |  |
Stock Repurchased During Period, Per Share (in dollars per share) | $ / shares |  |  |  |  |  |  |  | $ 11.22 |  |  |
Stock Repurchased During Period, Value |  |  |  |  |  |  |  | $ 1,900 |  |  |
The 2023 Equity Distribution Agreement [Member] |  |  |  |  |  |  |  |  |  |  |
Equity Sales Agreement, Maximum Value |  |  |  |  |  |  |  |  |  |  | $ 150,000
Stock Issued During Period, Shares, New Issues (in shares) | shares | 0 |  | 1,516,249 |  | 404,305 | 2,570,045 |  |  |  |  |
Proceeds from Issuance of Common Stock |  |  | $ 17,100 |  | $ 3,600 | $ 29,100 |  |  |  |  |
Payments of Stock Issuance Costs |  |  | $ 400 |  | 200 | $ 600 |  |  |  |  |
Equity Sales Agreement, Remaining Amount Available for Issuance |  | $ 75,200 |  |  |  |  |  |  |  |  |
Six Investments [Member] |  |  |  |  |  |  |  |  |  |  |
Investments, Cost, Nonaccrual Status | $ 74,800 |  |  |  | 74,800 |  | 74,800 | 74,800 |  |  |
Investments, Fair Value, Nonaccrual Status | $ 26,900 |  |  |  | $ 26,900 |  | $ 26,900 | $ 26,900 |  |  |
Four Investments [Member] |  |  |  |  |  |  |  |  |  |  |
Investments, Cost, Nonaccrual Status |  |  |  |  |  |  |  |  | 44,800 |  |
Investments, Fair Value, Nonaccrual Status |  |  |  |  |  |  |  |  | $ 10,500 |  |
One Investment [Member] |  |  |  |  |  |  |  |  |  |  |
Interest Income, Operating, Paid in Kind |  | $ 200 |  | $ 1,000 |  |  |  |  |  |  |

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