• Filing Date: 2018-08-20
  • Form Type: 10-Q
  • Description: Quarterly report
v3.10.0.1
Note 4 - Concentrations (Details Textual)
3 Months Ended 12 Months Ended
Jun. 30, 2018
USD ($)
Jun. 30, 2017
USD ($)
Mar. 31, 2018
USD ($)
Revenue from Contract with Customer, Including Assessed Tax $ 756,967 $ 1,146,355  
Accounts Receivable, Net, Current, Total 1,253,142   $ 1,207,493
Foreign Customers [Member]      
Accounts Receivable, Net, Current, Total $ 32,251   $ 39,995
Customer Concentration Risk [Member] | Sales Revenue, Net [Member]      
Concentration Risk, Number of Customers 2 2  
Customer Concentration Risk [Member] | Sales Revenue, Net [Member] | Two Customers [Member]      
Concentration Risk, Percentage 52.00% 60.00%  
Customer Concentration Risk [Member] | Sales Revenue, Net [Member] | Foreign Customers [Member]      
Concentration Risk, Percentage 13.00% 6.00%  
Revenue from Contract with Customer, Including Assessed Tax $ 101,965 $ 68,381  
Customer Concentration Risk [Member] | Accounts Receivable [Member]      
Concentration Risk, Number of Customers 3   2
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Two Customers [Member]      
Concentration Risk, Percentage     93.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Three Customers [Member]      
Concentration Risk, Percentage 97.00%