Revenue (Details) - USD ($)	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Jun. 30, 2020
Item Effected [Line Items]
Revenue	$ 6,962,065	$ 7,286,674	$ 14,227,580	$ 13,210,493
ASC 606 [Member]
Item Effected [Line Items]
Contract liabilities	1,650,288		1,650,288		$ 2,175,235
ASC 606 [Member] | Units Delivered [Member]
Item Effected [Line Items]
Revenue	5,865,878	5,702,565	11,724,584	10,820,879
ASC 606 [Member] | Milestones Achieved [Member]
Item Effected [Line Items]
Revenue	1,096,187	$ 1,584,109	2,502,996	$ 2,389,614
ASC 606 [Member] | Backlog [Member]
Item Effected [Line Items]
Intangible assets	$ 60,100,000		$ 60,100,000
Percentage of estimated shipments			27% in 2021; 51% in 2022; 12% in 2023, and 10% thereafter.