Annual report pursuant to Section 13 and 15(d)

Industry Segments and Financial Information About Foreign and Domestic Operations (Schedule of Segment Reporting Information) (Details)

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Industry Segments and Financial Information About Foreign and Domestic Operations (Schedule of Segment Reporting Information) (Details) - USD ($)
 12 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Operating (loss) income $ (20,872,407) $ (8,494,112)
Revenues 15,864,483 13,655,592
Operating Segments [Member]    
Operating (loss) income (20,872,000) (8,494,000)
Revenues 15,864,000 13,655,000
Commercial [Member] | Operating Segments [Member]    
Operating (loss) income 3,189,000 3,144,000
Research and Development [Member] | Operating Segments [Member]    
Operating (loss) income (10,808,000) (3,244,000)
Corporate [Member] | Operating Segments [Member]    
Operating (loss) income (13,253,000) (8,394,000)
U.S. [Member] | Operating Segments [Member]    
Revenues 5,220,000 1,288,000
South Africa [Member] | Operating Segments [Member]    
Revenues 2,961,000 951,000
Zimbabwe [Member] | Operating Segments [Member]    
Revenues 2,159,000 2,227,000
Mozambique [Member] | Operating Segments [Member]    
Revenues   1,430,000
Kenya [Member] | Operating Segments [Member]    
Revenues 1,006,000  
Other Countries [Member] | Operating Segments [Member]    
Revenues $ 4,518,000 $ 7,759,000