Revenue (Details) - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019	Jun. 30, 2019
Item Effected [Line Items]
Revenue	$ 6,191,300	$ 9,218,141	$ 19,401,793	$ 24,858,649
ASC 606 [Member]
Item Effected [Line Items]
Contract liabilities	2,791,775		2,791,775		$ 6,054
ASC 606 [Member] | Backlog [Member]
Item Effected [Line Items]
Intangible assets	59,800,000		$ 59,800,000
Percentage of estimated shipments			24% in 2020; 46% in 2021; 21% in 2022, and 9% thereafter.
ASC 606 [Member] | Units Delivered [Member]
Item Effected [Line Items]
Revenue	4,985,926	7,527,723	$ 15,806,805	20,400,908
ASC 606 [Member] | Milestones Achieved [Member]
Item Effected [Line Items]
Revenue	$ 1,205,374	$ 1,690,418	$ 3,594,988	$ 4,457,741