Quarterly report pursuant to Section 13 or 15(d)

Balance Sheet Information (Summary of Plant and Equipment) (Details)

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Balance Sheet Information (Summary of Plant and Equipment) (Details) - USD ($)
 3 Months Ended
Dec. 31, 2021
Sep. 30, 2021
Property, Plant and Equipment [Line Items]    
Total property and equipment $ 4,467,985 $ 4,165,776
Less: accumulated depreciation and amortization (3,598,543) (3,573,173)
Property and equipment, net 869,442 592,603
Manufacturing Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Total property and equipment $ 2,876,800 2,875,744
Manufacturing Equipment [Member] | Minimum [Member]    
Property, Plant and Equipment [Line Items]    
Estimated Useful Life 5 years  
Manufacturing Equipment [Member] | Maximum [Member]    
Property, Plant and Equipment [Line Items]    
Estimated Useful Life 8 years  
Office Equipment, Furniture And Fixtures [Member]    
Property, Plant and Equipment [Line Items]    
Total property and equipment $ 1,147,209 991,146
Office Equipment, Furniture And Fixtures [Member] | Minimum [Member]    
Property, Plant and Equipment [Line Items]    
Estimated Useful Life 3 years  
Office Equipment, Furniture And Fixtures [Member] | Maximum [Member]    
Property, Plant and Equipment [Line Items]    
Estimated Useful Life 10 years  
Leasehold Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Total property and equipment $ 443,976 $ 298,886
Leasehold Improvements [Member] | Minimum [Member]    
Property, Plant and Equipment [Line Items]    
Estimated Useful Life 3 years  
Leasehold Improvements [Member] | Maximum [Member]    
Property, Plant and Equipment [Line Items]    
Estimated Useful Life 8 years