FINANCIAL HIGHLIGHTS (Details) - USD ($) |
3 Months Ended | 9 Months Ended | 12 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
Mar. 31, 2022 |
Mar. 31, 2021 |
Mar. 31, 2020 |
Mar. 31, 2019 |
Mar. 31, 2018 |
Sep. 30, 2019 |
Sep. 30, 2018 |
Sep. 30, 2017 |
Dec. 31, 2021 |
Dec. 31, 2020 |
|
| Per Share Data (1) | ||||||||||
| Net asset value at beginning of period | $ 1.24 | $ 1.08 | $ 0.91 | $ 1.02 | $ 0.87 | $ 1.02 | $ 0.87 | $ 0.77 | $ 1.08 | $ 0.91 |
| Net investment income (loss) | 0.04 | 0.00 | 0.00 | (0.02) | (0.01) | (0.06) | (0.05) | (0.05) | 0.12 | 0.05 |
| Net realized and unrealized gains (losses) | 0.01 | 0.22 | (0.03) | 0.12 | 0.06 | 0.00 | 0.20 | 0.11 | 0.24 | 0.18 |
| Provision for income taxes | (0.01) | (0.06) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | (0.10) | (0.02) |
| Stock based compensation | 0.00 | 0.00 | 0.00 | 0.00 | (0.01) | |||||
| Repurchase of common stock | 0.00 | 0.00 | 0.04 | 0.00 | 0.02 | |||||
| Payment of common stock dividend | (0.00) | (0.00) | (0.00) | (0.05) | (0.00) | (0.05) | (0.00) | (0.00) | (0.10) | (0.05) |
| Net asset value at end of period | 1.28 | 1.24 | 0.88 | 1.07 | 0.92 | 0.91 | 1.02 | 0.87 | 1.24 | 1.08 |
| Ratio / Supplemental Data | ||||||||||
| Per share market value of investments at end of period | $ 1.86 | $ 1.25 | $ 0.41 | $ 0.78 | $ 0.76 | $ 0.16 | $ 0.90 | $ 0.65 | $ 1.31 | $ 0.62 |
| Shares outstanding at end of period | 10,790,413 | 10,786,913 | 11,067,402 | 11,067,402 | 11,067,402 | 11,067,402 | 11,067,402 | 11,067,402 | 10,790,413 | 10,785,913 |
| Average weighted shares outstanding for the period | 10,790,413 | 10,785,913 | 11,067,402 | 11,067,402 | 11,863,392 | 11,067,402 | 11,067,402 | 11,863,392 | 10,789,294 | 10,869,054 |
| Net assets at end of period | $ 13,826,160 | $ 13,391,679 | $ 9,786,615 | $ 11,890,188 | $ 9,783,191 | $ 10,068,533 | $ 11,278,889 | $ 9,629,215 | $ 13,414,049 | $ 11,640,887 |
| Average net assets | $ 13,620,104 | $ 12,516,283 | $ 9,927,574 | $ 12,911,895 | $ 9,770,410 | $ 11,473,535 | $ 10,341,702 | $ 9,444,440 | $ 13,155,207 | $ 10,504,563 |
| Total investment return | 3.23% | 14.81% | (3.30%) | 4.90% | 5.75% | (5.88%) | 17.24% | 7.79% | 24.07% | 23.08% |
| Portfolio turnover rate | 8.46 | 40.24 | 0.75 | 0.93 | 0.80 | 7.63 | 26.93 | 35.03 | 168.67 | 61.11 |
| Ratio of operating expenses to average net assets | (15.28%) | (16.20%) | (7.82%) | (6.06%) | (7.52%) | (7.27%) | (6.59%) | (7.30%) | (10.30%) | (7.16%) |
| Ratio of net investment income (loss) to average net assets | 14.24% | 0.42% | 0.87% | (4.87%) | (6.16%) | (5.86%) | (5.13%) | (5.45%) | 9.89% | 5.35% |
| Ratio of realized gains (losses) to average net assets | 4.20 | 133.32 | 1.00 | 137.57 | 2.17 | 28.35 | (5.62) | 5.71 | 31.30 | 0.05 |