Balance Sheet Information (Schedule of Estimated Useful Lives of Assets) (Details)	6 Months Ended
	Mar. 31, 2019
Manufacturing Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Useful lives	10 years
Manufacturing Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Useful lives	5 years
Office Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Useful lives	5 years
Office Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Useful lives	3 years
Furniture And Fixtures [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Useful lives	10 years
Furniture And Fixtures [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Useful lives	7 years