Annual report pursuant to Section 13 and 15(d)

Commitments (Details Textual)

v3.10.0.1
Commitments (Details Textual)
12 Months Ended
Sep. 30, 2018
USD ($)
Sep. 30, 2017
USD ($)
Sep. 30, 2016
USD ($)
Sep. 30, 2016
EUR (€)
Aug. 14, 2002
USD ($)
Other Commitments [Line Items]          
Lessee, Operating Lease, Term of Contract 5 years        
Rent expense on lease agreements $ 237,000 $ 238,000      
Equity Method Investments 46,456 66,695      
Joint venture agreement [Member]          
Other Commitments [Line Items]          
Equity Method Investments Committed Capital | €       € 120,000  
Equity Method Investment, Ownership Percentage     30.00% 30.00%  
Equity Method Investments     $ 67,000    
Director and Officer [Member] | Royalty Agreements [Member]          
Other Commitments [Line Items]          
Royalty percentage of gross receipts over base amount         5.00%
Gross receipt base amount for royalty calculation         $ 500,000
Royalty expense 0 0      
401(k) Retirement Savings Plan [Member]          
Other Commitments [Line Items]          
Employer contributions $ 75,000 $ 62,000      
Employee vesting percentage 100.00%        
Annual non-elective safe harbor employer contribution 3.00%        
Agreements With Contract Manufacturing Organizations And Consultants [Member]          
Other Commitments [Line Items]          
Purchase obligations $ 201,000        
Three buildings and facilities used in its operations [Member]          
Other Commitments [Line Items]          
Lessee, Operating Lease, Renewal Term 5 years        
Facilities used for executive offices and laboratories [Member]          
Other Commitments [Line Items]          
Lessee, Operating Lease, Renewal Term 2 years        
Undeveloped land in Baja, Mexico          
Other Commitments [Line Items]          
Lessee, Operating Lease, Renewal Term 3 years