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Financial Highlights - Schedule of Financial Highlights (Details) - USD ($) | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Sep. 30, 2022 | Jun. 30, 2022 | Sep. 30, 2021 | Jun. 30, 2021
Investment Company [Abstract] |  |  |  |  |  |  |
Net asset value, beginning of period | [1] | $ 6.50 | $ 6.92 |  |  |  |
Net investment income | [1] | 0.33 | 0.32 |  |  |  |
Net realized and unrealized gains (losses) | [1] | (0.17) | 0.15 |  |  |  |
Net increase (decrease) in net assets resulting from operations | [1] | 0.16 | 0.47 |  |  |  |
Dividends from net investment income | [2] | (0.30) | (0.30) |  |  |  |
Distributions from net realized gains | [2] | 0 | 0 |  |  |  |
Net decrease in net assets resulting from capital transactions | [2] | (0.30) | (0.30) |  |  |  |
Offering costs |  | 0 | 0 |  |  |  |
Net asset value, end of period |  | 6.36 | 7.09 |  |  |  |
Market value per share, end of period |  | $ 3.53 | $ 4.95 |  |  |  |
Total return based on market value(3)(4) | [3],[4] | (9.69%) | (2.79%) |  |  |  |
Shares outstanding at end of period |  | 14,388,456 | 14,384,180 |  |  |  |
Net assets, at end of year |  | $ 91,477,635 | $ 101,966,742 | $ 93,013,620 | $ 93,509,392 | $ 100,670,124 | $ 96,355,849
Ratio of total expenses to average net assets(5) | [5] | 18.49% | 16.23% |  |  |  |
Ratio of net expenses to average net assets(5) | [5] | 18.05% | 15.79% |  |  |  |
Ratio of interest expense and fees and amortization of deferred debt issuance costs to average net assets(5) | [5] | 9.24% | 7.45% |  |  |  |
Ratio of net investment income before fee waiver to average net assets(5) | [5] | 10.52% | 9.50% |  |  |  |
Ratio of net investment income after fee waiver to average net assets(5) | [5] | 10.07% | 9.07% |  |  |  |
Total Borrowings |  | $ 143,400,000 | $ 177,739,444 |  |  |  |
Asset Coverage Ratio(6) | [6] | 1.64% | 1.57% |  |  |  |
Portfolio Turnover Rate(4) | [3] | 12.00% | 26.00% |  |  |  |
[1] | All per share data activity is calculated based on the weighted average shares outstanding for the relevant period, except net increase (decrease) in net assets from capital share transactions, which is based on the common shares outstanding as of the relevant balance sheet date.
[2] | The per share data for dividends and distributions declared reflects the actual amount of the dividends and distributions declared per share during the period.
[3] | Not annualized.
[4] | Total returns are historical and are calculated by determining the percentage change in the market value with all dividends distributions, if any, reinvested. Dividends and distributions are assumed to be reinvested at prices obtained under the company’s dividend reinvestment plan. Total investment return does not reflect sales load.
[5] | Annualized.
[6] | Asset coverage ratio is equal to (i) the sum of (A) net assets at the end of the period and (B) debt outstanding at the end of the period, divided by (ii) total debt outstanding at the end of the period.

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