Industry Segments (Schedule of Segment Reporting Information) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Segment Reporting Information [Line Items]
Operating (loss) income	$ (299,678)	$ (2,124,590)	$ (2,084,071)	$ (3,136,317)
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating (loss) income	(299,678)	(2,124,590)	(2,084,071)	(3,136,317)
Commercial [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating (loss) income	6,186,211	2,801,740	11,989,804	6,160,921
Research and development [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating (loss) income	(3,866,775)	(2,888,361)	(9,113,156)	(5,250,184)
Corporate [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating (loss) income	$ (2,619,114)	$ (2,037,969)	$ (4,960,719)	$ (4,047,054)