Quarterly report pursuant to Section 13 or 15(d)

Accounts Receivable and Concentration of Credit Risk (Narrative) (Details)

v3.19.1
Accounts Receivable and Concentration of Credit Risk (Narrative) (Details)
item in Millions
1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Dec. 27, 2017
USD ($)
Jul. 31, 2018
USD ($)
Mar. 31, 2019
USD ($)
customer
Jun. 30, 2018
USD ($)
Mar. 31, 2018
customer
Mar. 31, 2019
USD ($)
customer
item
Mar. 31, 2018
USD ($)
customer
Sep. 30, 2018
USD ($)
customer
Feb. 28, 2018
USD ($)
Current accounts receivable, net     $ 4,027,235     $ 4,027,235   $ 3,972,632  
Minimum [Member]                  
Credit terms           30 days      
Maximum [Member]                  
Credit terms           120 days      
Assets, Current [Member]                  
Concentration risk, percentage           11.00%   15.00%  
Number of Customers | customer           1   1  
Accounts Receivable [Member]                  
Concentration risk, percentage           65.00%   74.00%  
Number of Customers | customer           2   3  
Total Revenue [Member]                  
Concentration risk, percentage     82.00%   44.00% 66.00% 50.00%    
Number of Customers | customer     4   2 3 3    
Semina [Member]                  
Current accounts receivable, net                 $ 1,500,000
Payments to settle agreement $ 2,200,000 $ 1,300,000              
Long term trade receivable $ 7,500,000                
Settlement loss on receivables       $ 200,000     $ 3,800,000    
South Africa [Member]                  
Credit terms           150 days      
Brazil [Member]                  
Number of units ordered | item           15