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Significant Customers (Details) - USD ($)
3 Months Ended 12 Months Ended
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2018
Jun. 30, 2017
Sales $ 7,827,194 $ 5,663,161 $ 11,531,105 $ 7,496,423 $ 5,460,600 $ 5,324,104 $ 5,667,624 $ 6,068,684 $ 32,517,883 $ 22,521,012
Sales Revenue [Member] | Domestic U.S. Customers [Member]                    
Concentration Risk percentage                 60.00% 45.00%
Number of customers                 2 2
Sales Revenue [Member] | Foreign Customers [Member]                    
Sales                 $ 3,112,000 $ 1,730,000