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Accounts Receivable and Concentration of Credit Risk (Components Of Accounts Receivable) (Details) - USD ($)
Dec. 31, 2017
Sep. 30, 2017
Dec. 31, 2016
Sep. 30, 2016
Accounts Receivable and Concentration of Credit Risk [Abstract]        
Trade receivables $ 2,905,094 $ 11,330,814    
Other Receivables 128,317 100,139    
Accounts receivable, gross 3,033,411 11,430,953    
Less: allowance for doubtful accounts (33,103) (38,103) $ (38,103) $ (38,103)
Accounts receivable, net 3,000,308 11,392,850    
Less: long-term trade receivables   (7,837,500)    
Current accounts receivable, net $ 3,000,308 $ 3,555,350