Annual report pursuant to Section 13 and 15(d)

Revenue from Contracts with Customers (Revenue by Geographic Area) (Details)

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Revenue from Contracts with Customers (Revenue by Geographic Area) (Details) - USD ($)
12 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]    
Revenues $ 31,803,387 $ 15,864,483
United States [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Revenues 17,260,174 5,221,052
Zimbabwe [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Revenues   2,159,263
South Africa [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Revenues   2,960,677
Other Countries [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Revenues $ 14,543,213 $ 5,523,491