Industry Segments (Schedule of Segment Reporting Information) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting Information [Line Items]
Operating loss	$ (1,392,852)	$ (1,842,002)	$ (3,476,923)	$ (4,978,319)
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating loss	(1,392,852)	(1,842,002)	(3,476,923)	(4,978,319)
Commercial [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating loss	5,619,168	5,263,796	17,608,972	11,424,718
Research and development [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating loss	(4,436,496)	(4,853,344)	(13,549,652)	(10,103,528)
Corporate [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating loss	$ (2,575,524)	$ (2,252,454)	$ (7,536,243)	$ (6,299,509)