Income Taxes (Significant Components of Deferred Tax Assets and Liabilities) (Details) - USD ($)	Jun. 30, 2021	Sep. 30, 2020
Components Of Deferred Tax Assets And Liabilities [Line Items]
Federal net operating loss carryforwards	$ 8,269,223	$ 8,759,589
State net operating loss carryforwards	1,647,082	1,682,104
Foreign net operating loss carryforwards - U.K.	15,259,909	11,655,853
Foreign capital allowance - U.K.	149,371	113,522
U.S. research and development tax credit carryforwards	919,415
Share-based compensation	770,598	1,255,983
Interest expense	1,165,193	850,248
Change in fair value of derivative liabilities	654,354	195,265
Gross deferred tax assets	29,146,130	24,785,980
Valuation allowance for deferred tax assets	(15,903,470)	(14,074,740)
Net deferred tax assets	13,242,660	10,711,240
Deferred tax liabilities:
In-process research and development	(882,427)	(882,427)
Developed technology		(369,237)
Covenant not-to-compete	(37,711)	(49,832)
Net deferred tax liabilities	(937,806)	(1,319,164)
Net deferred tax asset	12,304,854	9,392,076
Malaysia [Member]
Deferred tax liabilities:
Other, net	(11,297)	(11,297)
United States [Member]
Components Of Deferred Tax Assets And Liabilities [Line Items]
Other, net	187,644	179,677
Deferred tax liabilities:
Other, net	(6,371)	(6,371)
U.K. [Member]
Components Of Deferred Tax Assets And Liabilities [Line Items]
Other, net	$ 123,341	$ 93,739