Annual report pursuant to Section 13 and 15(d)

Operating Leases (Narrative) (Details)

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Operating Leases (Narrative) (Details)
 12 Months Ended
Sep. 30, 2019
USD ($)
ft²
$ / ft²
item
Sep. 30, 2018
USD ($)
Operating Leased Assets [Line Items]    
Total lease cost including real estate taxes, common area maintenance and insurance charges, net $ 683,000 $ 717,000
Miami, Florida [Member] | Corporate Headquarters [Member]    
Operating Leased Assets [Line Items]    
Area of real estate property | ft² 4,640  
Operating lease term 30 months  
Base rent amount per square foot | $ / ft² 33.00  
Annual base rent escalation 2.90%  
Security deposit $ 12,000  
Capital lease obligations $ 42,000  
Miami, Florida [Member] | Former Corporate Headquarters [Member]    
Operating Leased Assets [Line Items]    
Area of real estate property | ft² 3,900  
Operating lease term 3 years  
Base rent amount per square foot | $ / ft² 36.00  
Annual base rent escalation 4.00%  
Lease expiration date Oct. 31, 2019  
Extension of term of lease 3 years  
Operating lease number of extensions | item 2  
Chicago, Illinois [Member]    
Operating Leased Assets [Line Items]    
Area of real estate property | ft² 6,600  
Chicago, Illinois [Member] | Office Space [Member]    
Operating Leased Assets [Line Items]    
Operating lease term 7 years  
Operating lease holiday term 7 months  
Operating lease abatement term 5 months  
Lease expiration date Oct. 31, 2023  
Security deposit $ 55,000  
Chicago, Illinois [Member] | Office Space [Member] | Sublease [Member]    
Operating Leased Assets [Line Items]    
Lease expiration date Oct. 31, 2023  
Security deposit $ 30,000.0  
Chicago, Illinois [Member] | Minimum [Member] | Office Space [Member]    
Operating Leased Assets [Line Items]    
Base rent amount per square foot | $ / ft² 14.00  
Chicago, Illinois [Member] | Minimum [Member] | Office Space [Member] | Sublease [Member]    
Operating Leased Assets [Line Items]    
Operating lease monthly payments $ 15,200  
Chicago, Illinois [Member] | Maximum [Member] | Office Space [Member]    
Operating Leased Assets [Line Items]    
Base rent amount per square foot | $ / ft² 17  
Chicago, Illinois [Member] | Maximum [Member] | Office Space [Member] | Sublease [Member]    
Operating Leased Assets [Line Items]    
Operating lease monthly payments $ 17,300  
London, England [Member] | Office Space [Member]    
Operating Leased Assets [Line Items]    
Area of real estate property | ft² 6,400  
Operating lease quarterly rental payments $ 23,000  
Security deposit $ 57,000  
Selangor D.E., Malaysia [Member] | Manufacturing Space [Member]    
Operating Leased Assets [Line Items]    
Area of real estate property | ft² 45,800  
Operating lease term 3 years  
Extension of term of lease 3 years  
Operating lease renewal term 3 years  
Operating lease monthly payments $ 15,300  
Security deposit $ 46,000