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v3.23.1

Note 2 - Basis of Presentation and Significant Accounting Policies (Details Textual) - USD ($) $ / shares in Units, $ in Thousands |  | 3 Months Ended | 23 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Mar. 14, 2022 | Mar. 31, 2023 | Mar. 31, 2022 | Mar. 31, 2023 | Dec. 31, 2022 | Apr. 28, 2022 | Aug. 02, 2021
Investments, Nonaccrual, Interest Income |  | $ 0 | $ 0 |  |  |  |
Investment, Nonaccrual, Income Not Received in Cash, Percent |  | 6.30% | 9.50% |  |  |  |
Debt Issuance Costs, Net |  | $ 6,600 |  | $ 6,600 | $ 7,100 |  |
Accumulated Amortization, Debt Issuance Costs |  | 5,300 |  | $ 5,300 | 4,800 |  |
Amortization of Debt Issuance Costs |  | $ 478 | $ 336 |  |  |  |
Federal Excise Tax, Percent |  | 4.00% |  | 4.00% |  |  |
Investment Income, Operating, Tax Expense (Benefit) |  | $ 184 | 100 |  |  |  |
Unrecognized Tax Benefits, Ending Balance |  | $ 0 |  | $ 0 | 0 |  |
Open Tax Year |  | 2019 2020 2021 |  |  |  |  |
Proceeds from Issuance of Common Stock |  | $ 7,174 | $ 38,187 |  |  |  |
Stock Repurchase Program, Remaining Authorized Repurchase Amount |  |  |  |  |  | $ 5,000 |
Stock Repurchased During Period, Shares (in shares) |  | 0 | 0 | 167,465 |  |  |
Stock Repurchased During Period, Per Share (in dollars per share) |  |  |  | $ 11.22 |  |  |
Stock Repurchased During Period, Value |  |  |  | $ 1,900 |  |  |
The 2021 Equity Distribution Agreement [Member] |  |  |  |  |  |  |
Equity Sales Agreement, Maximum Value |  |  |  |  |  |  | $ 100,000
Stock Issued During Period, Shares, New Issues (in shares) |  | 605,848 | 250,171 |  |  |  |
Proceeds from Issuance of Common Stock |  | $ 7,200 | $ 3,900 |  |  |  |
Payments of Stock Issuance Costs |  | 200 | $ 100 |  |  |  |
Equity Sales Agreement, Remaining Amount Available for Issuance |  | 24,100 |  | 24,100 |  |  |
Public Offering [Member] |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) | 2,500,000 |  |  |  |  |  |
Proceeds from Issuance of Common Stock | $ 34,300 |  |  |  |  |  |
Shares Issued, Price Per Share (in dollars per share) | $ 14.35 |  |  |  |  |  |
Three Investments [Member] |  |  |  |  |  |  |
Investments, Cost, Nonaccrual Status |  | 20,300 |  | 20,300 | 20,900 |  |
Investments, Fair Value, Nonaccrual Status |  | $ 5,300 |  | $ 5,300 | $ 8,300 |  |

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