Quarterly report pursuant to Section 13 or 15(d)

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

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Income Taxes (Reconciliation of Income Tax Expense (Benefit)) (Details) - USD ($)
3 Months Ended 9 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Income Taxes [Abstract]        
Income tax expense (benefit) U.S. federal statutory rates $ (1,386,552) $ (4,632,174) $ (17,298,236) $ (8,931,007)
State income tax expense (benefit), net of federal benefit (107,359) (358,662) (1,339,378) (691,515)
Non-deductible expenses (262,005) (355,069) 185,564 4,860
Effect of stock options exercised   (147,570) 63,849 (170,920)
U.S. research and development tax credit 2,835,378 (1,283,944) 415,378 (4,160,374)
Effect of foreign income tax rates 406,324 366,493 307,188 327,055
Effect of global intangible low taxed income (24,691) (12,989) (24,691)  
Change in valuation allowance (1,382,325) 6,504,878 17,640,877 13,637,539
Other, net (21,219) 56,640 (27,837) 209,170
Income tax expense (benefit) $ 57,551 $ 137,603 $ (77,286) $ 224,808