Quarterly report pursuant to Section 13 or 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 ($)
3 Months Ended 6 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Mar. 31, 2020
Mar. 31, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues $ 9,943,104 $ 6,976,115 $ 20,521,120 $ 13,347,924
United States [Member]        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues 7,674,849 2,596,281 14,166,003 5,645,884
Zimbabwe [Member]        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues       1,948,304
Brazil [Member]        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues   1,098,000    
Other Countries [Member]        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues $ 2,268,255 $ 3,281,834 $ 6,355,117 $ 5,753,736