| Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] |
| | | Three Months Ended | | | Nine Months Ended | |
| | | June 30, | | | June 30, | |
| | | 2026 | | | 2025 | | | 2026 | | | 2025 | |
| | | | | | | | | | | | | | | | | |
| Income tax benefit at U.S. federal statutory rates | | $ | (1,467,554 | ) | | $ | (1,537,851 | ) | | $ | (3,236,830 | ) | | $ | (3,566,933 | ) |
| State income tax benefit, net of federal benefit | | | (230,616 | ) | | | (403,409 | ) | | | (508,645 | ) | | | (560,518 | ) |
| Non-deductible expenses | | | 52,054 | | | | 58,150 | | | | 72,650 | | | | 78,763 | |
| U.S. research and development tax credit | | | (704,711 | ) | | | 6,722 | | | | (959,164 | ) | | | (421,986 | ) |
| Effect of change in effective tax rate | | | — | | | | 554,430 | | | | — | | | | 554,430 | |
| Change in estimated unrecognized tax benefit | | | 703,833 | | | | — | | | | 717,240 | | | | — | |
| Change in valuation allowance | | | 1,646,994 | | | | 1,321,958 | | | | 3,914,749 | | | | 3,916,244 | |
| Income tax expense | | $ | — | | | $ | — | | | $ | — | | | $ | — | |
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