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Income Taxes (Details 2) - USD ($)	12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Income tax benefit at statutory federal rate	$ (5,519,000)	$ (5,505,000)
Foreign income taxed at other rates	(723,000)	(825,000)
Other permanent differences	35,000	140,000
Research and development credit benefit	1,267,000	914,000
State and local taxes	(2,911,000)	(1,487,000)
Adjustment and true up to prior year tax provision	373,000	194,000
Effect of change in statutory rates	36,000	0
State minimum and excise taxes	22,664	82,181
Change in valuation allowances	7,442,000	6,569,000
Income tax expense	$ 22,664	$ 82,181

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