Annual report pursuant to Section 13 and 15(d)

Income Taxes (Reconciliation of Income Tax Expense (Benefit)) (Details)

v3.22.2.2
Income Taxes (Reconciliation of Income Tax Expense (Benefit)) (Details) - USD ($)
12 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Income Taxes [Abstract]    
Amount, Income tax (benefit) expense at U.S. federal statutory rates $ (17,543,321) $ 895,699
Amount, State income tax (benefit) expense, net of federal benefits (1,358,354) 69,353
Amount, Effect of change in U.K. tax rate   (3,746,247)
Amount, Non-deductible expenses - other 76,913 137,003
Amount, U.S. research and development tax credit (5,720,374) (2,761,415)
Amount, Effect of foreign income tax rates 409,048 461,177
Amount, Effect of common stock options and warrants exercised (1,580,756) (3,848,412)
Amount, Effect of Paycheck Protection Program funds   (113,442)
Amount, Effect of global intangible low-taxed income 24,691 219,167
Amount, Change in valuation allowance 25,792,441 5,505,271
Amount, Other, net 136,109 52,708
Amount, Income tax expense (benefit) $ 236,397 $ (3,129,138)
Tax Rate, Income tax expense (benefit) at U.S. federal statutory rates 21.00% 21.00%
Tax Rate, State income tax expense (benefit), net of federal benefits 1.60% 1.60%
Tax Rate, Effect of change in U.K. tax rate   (87.80%)
Tax Rate, Non-deductible expenses - other (0.10%) 3.20%
Tax Rate, U.S. research and development tax credit 6.90% (64.70%)
Tax Rate, Effect of foreign income tax rates (0.50%) 10.80%
Tax Rate, Effect of common stock options and warrants exercised 1.90% (90.20%)
Tax Rate, Effect of Paycheck Protection Program funds   (2.70%)
Tax Rate, Effect of global intangible low-taxed income 0.00% 5.10%
Tax Rate, Change in valuation allowance (30.90%) 129.10%
Tax Rate, Other net (0.20%) 1.20%
Tax Rate, Income tax expense (benefit) (0.30%) (73.40%)