Income Taxes (Reconciliation of Income Tax Expense (Benefit)) (Details) - USD ($)	3 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Income Taxes [Abstract]
Income tax benefit at U.S. federal statutory rates	$ (1,753,168)	$ (8,143,219)
State income tax benefit, net of federal benefits	(135,745)	(630,518)
Non-deductible expenses	89,410	113,456
Effect of stock options exercised		83,736
U.S. research and development tax credit	(170,000)	(1,090,000)
Effect of foreign income tax rates	(91,591)	(80,110)
Change in valuation allowance	1,988,678	9,678,495
Other, net	(23)	(118)
Income tax benefit	$ (72,439)	$ (68,278)
Tax Rate, Income tax benefit at U.S. federal statutory rates	21.00%