Equipment and Leasehold Improvements (Summary of Major Categories of Equipment and Leasehold Improvements) (Details) - USD ($)	Jun. 30, 2024	Jun. 30, 2023
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 8,450,382	$ 8,779,972
Less: accumulated depreciation and amortization	7,226,991	7,826,069
Equipment and leasehold improvements, net	1,223,391	953,903
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 619,064	619,064
Machinery and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives (in years)	5 years
Machinery and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives (in years)	10 years
Furniture and Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 337,419	337,419
Furniture and Office Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives (in years)	5 years
Furniture and Office Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives (in years)	10 years
Tooling [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives (in years)	5 years
Property, plant and equipment, gross	$ 3,765,766	4,506,044
Computer & Technology Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 197,073	197,072
Computer & Technology Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives (in years)	3 years
Computer & Technology Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives (in years)	5 years
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 3,171,070	2,864,335
Leasehold Improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives (in years)	3 years
Leasehold Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives (in years)	11 years
Assets in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 359,990	$ 256,038